共查询到20条相似文献,搜索用时 15 毫秒
1.
E. M. S. Azzam 《Journal of surfactants and detergents》2007,10(1):13-17
The synergistic behavior of sodium dodecylbenzene sulfonate (SDBS) with poly(ethylene oxide)–poly(propylene oxide)–poly(ethylene
oxide) (PEO–PPO–PEO) block copolymer was studied using surface tension measurements. The surface tension of single and mixed
solutions of SDBS and the block copolymer in this study was measured at different concentrations and at 25 °C. The critical
micelle concentration (CMC) of these solutions was determined from the surface tension measurements. The SDBS gives higher
CMC values than those of the block copolymer. The results show that the CMC value of SDBS decreases as the molar ratio of
SDBS increases in the mixture solution with the block copolymer. The surface parameters of adsorption and micellization for
single and mixed solutions were investigated. The results show that the surface and micellization properties of SDBS were
improved as a result of mixing with the block copolymer. The mole fractions in the micelles and interaction parameters of
the mixed solutions were calculated. The foam stability of single and mixed solutions at 25 °C was determined. The results
show that the SDBS has more foam stability than the block copolymer and the foam stability increases as the molar ratio of
SDBS increase in mixed solution of it with block copolymer.
相似文献
E. M. S. AzzamEmail: |
2.
A. Upadhyaya E. J. Acosta J. F. Scamehorn D. A. Sabatini 《Journal of surfactants and detergents》2007,10(4):269-277
This research evaluates the adsorption of anionic and cationic surfactant mixtures on charged metal oxide surfaces (i.e.,
alumina and silica). For an anionic-rich surfactant mixture below the CMC, the adsorption of anionic surfactant was found
to substantially increase with the addition of low mole fractions of cationic surfactant. Two anionic surfactants (sodium
dodecyl sulfate and sodium dihexyl sulfosuccinate) and two cationic surfactants (dodecyl pyridinium chloride and benzethonium
chloride) were studied to evaluate the effect of surfactant tail branching. While cationic surfactants were observed to co-adsorb
with anionic surfactants onto positively charged surfaces, the plateau level of anionic surfactant adsorption (i.e., at or
above the CMC) did not change significantly for anionic–cationic surfactant mixtures. At the same time, the adsorption of
anionic surfactants onto alumina was dramatically reduced when present in cationic-rich micelles and the adsorption of cationic
surfactants on silica was substantially reduced in the presence of anionic-rich micelles. This demonstrates that mixed micelle
formation can effectively reduce the activity of the highly adsorbing surfactant and thus inhibit the adsorption of the surfactant,
especially when the highly adsorbing surfactant is present at a low mole fraction in the mixed surfactant system. Thus surfactant
adsorption can be either enhanced or inhibited using mixed anionic–cationic surfactant systems by varying the concentration
and composition.
相似文献
D. A. SabatiniEmail: |
3.
The effect of the different binary aqueous organic solvents viz. 1,4-dioxane, acetonitrile, dimethylsulfoxide, ethylene glycol,
and methanol, on the micelle formation and thermodynamics of a cationic surfactant cetyl triphenyl phosphonium bromide has
been studied conductometrically at 298–318 K. From the conductivity data critical micelle concentration, degree of counter
ion dissociation (α) and thermodynamic parameters of micellization have been determined. It is observed that micellization
tendency of the surfactant decreases in the presence of binary aqueous solvents. The entropies of micellization are all positive,
and they compensate the enthalpies of the process.
相似文献
Kallol K. GhoshEmail: |
4.
A. M. Al-Sabagh E. M. S. Azzam S. A. Mahmoud N. E. A. Saleh 《Journal of surfactants and detergents》2007,10(1):3-8
A series of ethoxylated sodium monoalkyl sulfosuccinate (ESMASS) ester surfactants were prepared by reacting polyethylene
glycol (molecular weight 600) with sodium monoalkyl sulfosuccinate (SMASS). The esters were prepared by reacting octyl, lauryl,
or cetyl alcohol with sodium sulfosuccinate (SSS) to prepare E(14)SMOSS, E(14)SMLSS, and E(14)SMCSS. The chemical structures
of the prepared surfactants were confirmed by Fourier transform infrared (FTIR) and 1H-NMR spectroscopy. The surface tension of the synthesized surfactants was measured at 25 °C individually or mixing at different
molar fractions with sodium dioctyl sulfosuccinate. The surface active properties were calculated and the micellization process
of the mixture was investigated. The molar ratio of anionic (SDOSS) and anionic–nonionic surfactant moieties [E(14)SMOSS,
E(14)SMLSS, and E(14)SMCSS] in the mixed aggregates were deduced using the regular solution approximation equations. Depending
on the critical micelle concentration values measured for each surfactant individually, and as well as the mixed systems,
the minimum surface tension was exhibited at a ratio of 0.6 SDOSS:0.4 E(14)SMCSS. The micellar composition of the mixed aggregates
were explained and discussed based on the effect of their chemical structures. The activity coefficient (f
1, f
2), interaction parameter (β), and ideality of anionic–nonionic mixed aggregates were evaluated.
相似文献
E. M. S. AzzamEmail: |
5.
Yurong Jiang Zhigang Xu Jimei Luan Pingqin Liu Weihong Qiao Zongshi Li 《Journal of surfactants and detergents》2007,10(3):131-136
Three unsymmetrical bolaform surfactants with different aromatic rings and a ω-carboxyalkyl chain were synthesized and their
molecular structures were characterized by ESI–MS and 1H NMR. The percentages of conversion of alkylation were judged by the iodine value measurements and the effect of reaction
temperature on sulfonate content of synthesized products has also been discussed.
相似文献
Yurong JiangEmail: |
6.
A series of cleavable aryl sulfonate anionic surfactants were synthesized from cyanuric chloride, aliphatic amine and H-acid
mono sodium salt. Their structures were identified by 1H NMR, Infrared Spectrum (IR) and Elementary Analysis (EA). Their critical micelle concentrations (CMC) in aqueous solutions
at 25 °C were determined by a steady-state fluorescence probe method and a surface-tension method. With the increasing length
of the carbon chain, the value of their CMCs and surface tensions under CMC (γ
CMC) initially decreased and then reached a minimum (respectively 2.63 × 10−5 mol L−1 and 28.29 mN m−1) when the carbon number was 10. The CMC and γ
CMC then increased when the carbon number was increased to 12. The results showed that, compared with sodium dodecyl benzene
sulfonate (SDBS), such kinds of surfactants have much lower surface adsorption amounts and greater molecular areas on the
aqueous surface.
相似文献
Zhiyong HuEmail: |
7.
Brahim Bettayeb Caroline Descôteaux François Benoit Camille Chapados Gervais Bérubé 《Journal of surfactants and detergents》2009,12(3):237-247
Fourteen pure β-aminopropionic acid amphoteric surfactants were synthesized from methyl acrylate using primary amines. The
synthesis was done in two steps. First, Michael addition of a primary amine to methyl acrylate gave two separable addition
products. Second, because the resulting esters gave, by the classical saponification procedure, undesired retro-Michael products,
they were treated with sodium trimethylsilanolate to give the corresponding pure anhydrous acid salt under mild non-aqueous
reaction conditions. Two types of amphoteric surfactants were obtained: the monocarboxylate and the dicarboxylate series.
The pure surfactants were characterized by IR, 1H NMR, and 13C NMR spectroscopy. The surfactant critical micelle concentrations were evaluated. From these the Gibbs free energy of micellizations
[∆G(–CH2–)mic] were calculated. These are related to the methylene units that contribute an average of −1.0 (±0.3) kJ mol−1 for both the monocarboxylate and the dicarboxylate series.
相似文献
Gervais BérubéEmail: |
8.
Sudheesh Parathakkatt Jinu George Moothandassery Sankarakutty Sajeev Lisa Sreejith 《Journal of surfactants and detergents》2009,12(3):219-224
The rheological behavior of micellar solutions of cationic surfactant, cetyl trimethyl ammonium bromide in the presence of
a salt (KBr) and a co-surfactant (n-octanol) were analyzed. Shear viscosity and shear moduli were measured as a function of concentrations of the co-surfactant
and additive. When these concentrations attained a certain critical threshold value, the micellar solution was found to exhibit
a nonlinear viscoelastic behavior. It is due to the formation of supramolecular structures, which has been described by the
Maxwell model of a viscoelastic fluid typical of worm-like micelles. The rheological behavior was also analyzed using Carreau
and Carreau–Gahleitner models which were found to be in good agreement with the experimental results.
相似文献
Lisa Sreejith (Corresponding author)Email: Email: |
9.
A. M. Badawi M. A. Mekawi A. S. Mohamed M. Z. Mohamed M. M. Khowdairy 《Journal of surfactants and detergents》2007,10(4):243-255
In this study, steps were taken toward the development of bactericidal and fungicidal synthetic cationic surfactants by reacting
decyl, dodecyl or tetradecyl amine with acetic or hydrochloric acid to produce a series of amine salts which consequently
converted to copper or cobalt cationic complexes via complexing the first series compounds with copper (II) or cobalt (II)
ions. Surface properties such as interfacial tension and emulsifying power of these surfactants were investigated. The surface
parameters including critical micelle concentration (CMC), maximum surface excess (Γmax) and minimum surface area (A
min) were studied. Free energy of micellization (ΔG°mic) and adsorption (ΔG°ads) were calculated. The antimicrobial activity was determined via the inhibition zone diameter of the prepared compounds, which
measured against five strains of a representative group of microorganisms. FTIR spectra, elemental analysis and H1 NMR spectrum were performed to confirm compound structure and purity.
相似文献
M. Z. MohamedEmail: |
10.
Mixtures of sodium dioctylsulfosuccinate (AOT) and sodium dodecylsulfate (SDS) that were studied in water at 25 °C by using
surface tension, conductance, emf and fluorescence emission methods exhibit synergism in the region where the mole fraction
of AOT in the bulk solution (α
1) is less than 0.7 and ideality in the region where α
1 ≥ 0.7. The molal conductance versus the concentration behavior of an aqueous solution of AOT is found to be different from
that of other ionic surfactants with the exception of bile salts. Composition of the mixed micelle was evaluated and discussed
using the Rubingh’s and the Rodenas–Valiente–Villafruela (RVV) treatments. The values of the counter ion binding constant
determined from the emf data show that the counter ion binding behavior of the mixed micelle is controlled entirely by AOT.
The free energy for mixed micelle formation was calculated using a modified equation. The aggregation number determined by
the fluorescence quenching method indicated that in the mixed micelle, as α
1 increases, the number of molecules of AOT remains constant and that of SDS decreases. Characteristics of the adsorption layer
of the mixed surfactant system were also examined using the theoretical treatment of Rosen and Hua.
相似文献
K. IsmailEmail: |
11.
Linh D. Do Anuradee Withayyapayanon Jeffrey H. Harwell David A. Sabatini 《Journal of surfactants and detergents》2009,12(2):91-99
Microemulsion formation of triglyceride oils at ambient conditions (temperature and pressure) and without the addition of
co-oil and/or alcohols is challenging at best. Undesirable phases, such as macroemulsions, liquid crystals and sponge phases,
are often encountered when formulating triglyceride microemulsions. The purpose of this study is to investigate the use of
extended surfactants, lipophilic linkers, and hydrophilic linkers in enhancing triglyceride solubilization and interfacial
tension reduction. We have studied two classes of extended surfactants, linear alkyl polypropoxylated sulfate (LAPS) surfactants
and linear alkyl polypropoxylated ethoxylated sulfate (LAPES) surfactants. Linkers evaluated were oleyl alcohol (lipophilic
linker), sodium mono and dimethyl naphthalene sulfonate (SMDNS), and polyglucoside (hydrophilic linkers). Oils studied include
olive, peanut, soybean, canola and sunflower oils. The effect of electrolyte concentration on microemulsion phase behavior
was studied. The microemulsion “fish” diagram was obtained by plotting the total surfactant and linker concentrations versus
the electrolyte concentration. We were able to form Winsor Type I, II, III and IV microemulsions at ambient conditions and
without co-oil or short and medium chain length alcohol addition. Winsor Type III and IV triglyceride microemulsions are particularly
useful in numerous applications such as cosmetics, vegetable oil extraction and soil remediation.
相似文献
David A. Sabatini (Corresponding author)Email: |
12.
The Characteristic Curvature of Ionic Surfactants 总被引:1,自引:1,他引:0
Edgar J. Acosta Jessica Sh. Yuan Arti Sh. Bhakta 《Journal of surfactants and detergents》2008,11(2):145-158
Characterizing the hydrophilic-lipophilic nature of a surfactant molecule has been a challenge for colloid scientists and
technologists. The hydrophilic-lipophilic balance (HLB), the packing factor, the phase inversion temperature (PIT) and the
natural curvature of the surfactant are all terms that seek to address this issue. In this article we build on the hydrophilic–lipophilic
difference concept (HLD) (Salager et al. Langmuir, 16, 5534–5539, 2000) to develop a methodology to determine a characteristic
curvature (Cc) for ionic surfactants based on the phase behavior of mixed ionic surfactant microemulsions. In essence, the
method consists of evaluating the shift in optimal electrolyte concentration as a function of the mole fraction of the test
surfactant in a mixture with a reference surfactant, sodium dihexyl sulfosuccinate (SDHS) and applying the appropriate HLD
equation for ionic surfactant mixtures to determine Cc. The values of Cc were determined for a range of surfactants, including
sodium dodecyl sulfate (SDS), sodium dodecyl benzene sulfonate (SDBS), sodium naphthenate, and others. The method was also
extrapolated to nonionic additives and hydrophilic linkers. It was observed that the calculated values of Cc were similar
to those predicted by group contribution models, however the proposed method can be used even for complex surfactant mixtures.
Finally, when Cc values were compared to apparent packing factor and HLB values, it was found that Cc is correlated with the
apparent packing factor of ionic surfactants, and that Cc correlates with the HLB value for nonionic amphiphiles. The physical
interpretation of Cc, and its potential application in the Net-Average Curvature equation of state for oil-surfactant-water
systems is discussed.
相似文献
Edgar J. AcostaEmail: |
13.
Hakima Azira Amel Tazerouti Jean Paul Canselier 《Journal of surfactants and detergents》2008,11(4):279-286
Using different reaction conditions of photosulfochlorination of n-dodecane, two samples of anionic surfactants of sulfonate type are obtained. Their micellar behavior has been already reported
and the relationship between their isomeric distribution and their chemical structures and micellar behaviors have been more
thoroughly explored. In this investigation, we screened the foaming properties (foaming power and foam stability) by a standardized
method very similar to the Ross–Miles foaming tests to identify which surfactants are suitable for applications requiring
high foaming, or, alternatively, low foaming. The results obtained for the synthesized surfactants are compared to those obtained
for an industrial sample of secondary alkanesulfonate (Hostapur 60) and to those of a commercial sample of sodium dodecylsulfate
used as reference for anionic surfactants. The foam formation and foam stability of aqueous solutions of the two samples of
dodecanesulfonate are compared as a function of their isomeric distribution. These compounds show good foaming power characterized
in most cases by metastable or dry foams. The highest foaming power is obtained for the sample rich in primary isomers which
also produces foam with a relatively high stability. For the sample rich in secondary isomers we observe under fixed conditions
a comparable initial foam height but the foam stability turns out to be low. This property is interesting for applications
requiring low foaming properties such as dishwashing liquid for machines. The best results are observed near and above the
critical micellar concentrations and at 25 °C for both the samples.
相似文献
Amel TazeroutiEmail: |
14.
F. Comelles J. Sánchez-Leal J. J. González 《Journal of surfactants and detergents》2007,10(3):137-144
The influence of surfactant structure on the formation of lamellar liquid crystals with very low surfactant concentration
was investigated for systems composed of oleic acid, diethyleneglycol ethyl ether and water. Surfactants belonging to anionic
and cationic families were checked: phosphated oleyl ether 3 EO (PO3EO), triethanolamine oleate (TEAO) and sodium lauryl ether sulphate (SLES) as anionic surfactants and two alkyl trimethylammonium
bromide type (C12TAB and C14TAB) as cationic surfactants. For each of the surfactants, the appropriate relationships between surfactant, oleic acid and
glycol to furnish lamellar liquid crystals when these basic compositions were further diluted with water were established.
The appropriate ranges of dilution allowing the liquid crystal formation were also determined. These liquid crystals presented
an attractive appearance because of their transparency and high viscosity, although in the beginning of its formation, a short
range of less viscous compositions (so called liquid/gel compositions) appears in some cases. Through water dilution, the
initial surfactant percentages are noticeably reduced being possible liquid crystals with 2–5 wt% of surfactant.
相似文献
F. ComellesEmail: |
15.
M. Z. Mohamed 《Journal of surfactants and detergents》2008,11(2):175-179
Four fluorinated cationic surfactants were prepared by condensing 2,2,3,3, tetrafluoro-1-propyl chloroacetate with stoichiometric
amounts of pyridine, 2-hydroxypyridine, 8-hydroxyquinoline and 8-hydroxyquinaldine to produce four quaternary ammonium salts.
The surface and biocidal properties of these surfactants were investigated. Surface properties of their solutions including
surface tension, critical micelle concentration (CMC), effectiveness (Πcmc), maximum surface excess (Γmax) and minimum surface area (A
min) were investigated with respect to different concentrations at 25 °C. Standard free energies of micellization and adsorption
of the prepared surfactants in the aqueous solution were studied. The biocidal activity was determined via the inhibition
zone diameter of prepared compounds which tested against six strains as a representative group of microorganisms.
相似文献
M. Z. MohamedEmail: |
16.
José Antonio Gárate María de los Ángeles Valenzuela María Pilar Gárate Andrés F. Olea 《Journal of surfactants and detergents》2009,12(3):231-236
The solubility and aggregation process of polyethoxylated non-ionic surfactants, of general formula C
i
H2i+1–(O–CH2–CH2)
j
–OH with i = 6, 8, 10 and j = 3–6 (C
i
EO
j
), in heptane were studied. The aggregation of C
i
EO
j
surfactants in heptane was investigated by using methylene blue (MB) as an absorption probe. In solutions of MB in the presence
of these surfactants in heptane, at concentrations larger than the re-dissolution concentration, the UV bands associated to
free MB (A
1) and MB–EO complex (A
2) were detected. The ratio of these intensities A
2/A
1, was used to study the kinetics of the complex formation in pure surfactant. The value of A
2/A
1 depends on the surfactant structure and the media wherein MB is dissolved, being larger in the pure surfactant than in heptane
solutions. These results are explained in terms of solvent effect and aggregate structures on the complex formation.
相似文献
Andrés F. Olea (Corresponding author)Email: |
17.
S. Kay Obendorf Haiqing Liu Kuitian Tan Michael J. Leonard Timothy J. Young Michael J. Incorvia 《Journal of surfactants and detergents》2009,12(1):43-58
Surfactants enhance adsorption of an aroma chemical on cotton fiber. Strong hydrophobic and electrostatic interactions between
surfactant and fiber substrate result in higher adsorption of surfactant/aroma chemical aggregates than for the aroma chemical
alone, with higher adsorption for cationic systems than for anionic systems. Adsorption is attributed to solution physical
entrapment, hydrophobic interaction, dispersion forces, and interaction with surfactant molecules adsorbed on fiber. Log P and water solubility are important factors in aroma chemical adsorption. Hydrophobicity increased selective partitioning
of aroma chemicals on the fiber surface particularly in the presence of surfactants. Statistical analyses indicate some evidence
of polar–polar interaction between aroma chemicals and cellulose. With no surfactant, more adsorption is often observed in
systems with a higher concentration of NaCl. The screening effect of electrolytes increases with the electrolyte reducing
the energy of the liquid–solid interface. Lower interfacial energy results in increased adsorption of an aroma chemical on
the fiber surfaces. Electrolyte screening affects aroma chemical adsorption most for anionic surfactant systems. Increase
in the concentration of the electrolyte increases the screening effect that reduces the repulsive forces between the anionic
molecules and weakly electronegative cotton fiber surfaces. In a cationic system, the screening effect of the electrolyte
reduces adsorption of aroma chemicals with increased electrolyte concentration, due to the screening-reducing attraction between
cationic surfactant molecules and the fiber surface. Chemical functionality shows a significant effect (alkanol ≥ ketone ≥ aldehyde > ester)
on adsorption. Adsorption increased with increasing molecule ovality. Statistical analyses indicate that molecular shape within
a chemical class of compounds influences adsorption of the aroma chemical.
相似文献
S. Kay ObendorfEmail: |
18.
Xulong Cao Zhenquan Li Xinwang Song Xiaohong Cui Yuping Wei Fa Cheng Jun Wang 《Journal of surfactants and detergents》2009,12(2):165-172
This present article employs four anionic Gemini surfactants with different spacer groups and investigates their physicochemical
and aggregation properties. The critical micelle concentration (CMC), surface tension at CMC (γCMC) and C
20 of these surfactants have been investigated using the du Nouy ring method. The aggregation number (N) was determined with intrinsic fluorescence quenching method using pyrene as a fluorescence probe and benzophenone as a quencher.
Results show that these anionic Gemini surfactants have lower CMC and C
20 values compared with those conventional ones and show higher surface activity. As expected, the spacer plays an important
role in the aggregation properties of Gemini surfactants. Under experimental conditions, Gemini B–D with an alkoxylated group
as spacer has a lower CMC and a higher aggregation number than Gemini A with methylene as spacer. For Gemini B–D, the CMC
and aggregation number values decrease with the increasing flexible spacer length. The micropolarity also affects the aggregation
of the present anionic Gemini surfactants. The micropolarity of micelle becomes low when the concentration of surfactants
increases. Aggregation numbers of surfactants increase and fluorescence intensities decrease with the increasing concentration
of NaCl. These results will help us to understand the relationship between the architectures of Gemini surfactants and their
various properties in aqueous solution.
Electronic supplementary material The online version of this article (doi:) contains supplementary material, which is available to authorized users.
相似文献
Yuping WeiEmail: |
19.
Yurong Jiang Zhigang Xu Jimei Luan Pingqin Liu Weihong Qiao Zongshi Li 《Journal of surfactants and detergents》2008,11(1):73-78
By performing measurements of the equilibrium surface tensions of electrolyte solutions of three unsymmetrical bolaamphiphiles,
each of which has an aromatic ring and a ω-carboxyalkyl chain in its molecular structure, we conclude that the carboxyl and
sulfonate groups at both ends of the molecule—which enter the solution while the hydrophobic chain extends into the air—can
force these surfactants to adopt a looped configuration which looks like the letter “U” upside-down, resulting in regular
arrangements at the air/water interface and micelles in bulk solution. Surface tension measurements of these surfactants as
a function of added salt reveal the limiting surface tension to be less sensitive to the ionic strength in LiCl solution and
significantly sensitive to divalent Ca2+ and Mg2+ ions in hard water. This result reveals that the looped configuration of the molecule is the dominant factor in determining
whether the molecules of this surfactant are sensitive to ionic strength or not. This paper also reports briefly on the effect
of the interactions of divalent Ca2+ and Mg2+ ions with unsymmetrical bolaamphiphiles on the turbidity of hard water. These results suggest that the interactions of divalent
Ca2+ and Mg2+ ions with carboxyl groups are strong, and the two breaks in the surface tension curves disappear. In 200 ppm hard water,
the turbidity appears over just a small range of surfactant concentrations, showing that the presence of the Ca2+ and Mg2+ ions has little effect on the application of these surfactants.
相似文献
Weihong Qiao (Corresponding author)Email: |
20.
Marcelo C. Murguía Laura M. Machuca María C. Lurá María I. Cabrera Ricardo J. Grau 《Journal of surfactants and detergents》2008,11(3):223-230
A series of new N-acetylated non-ionic and cationic gemini surfactants (3a–f) having dimeric structures derived from primary and tertiary amines with variably long tails (C8–C12–C18) were synthesized. In addition, N-acetylated monomeric analogues 6a and 6b were prepared and their antifungal potency and surface properties were also determined. Critical micelle concentration (CMC),
effectiveness of surface tension reduction (γCMC), surface excess concentration (Γ), and area per molecule at the interface (A) were also determined and the resulting values indicate that the cationic series is characterized by good surface-active
and self-aggregation properties. For the first time, all surfactants were tested to evaluate their antifungal properties using
the method for the broth macrodilution test (M27-A2, NCCLS). Four microbial strains were used to perform the study: Candida parapsilosis (ATCC 22019), C. albicans (ATCC 64548), and a wild-type strain of C. parasilosis and Saccharomyces cerevisiae (ATCC 9763). The antimicrobial activity was measured by yeast growth inhibition expressed as minimum inhibitory concentration
(MIC) values. Results were compared to those obtained for their monomeric analogues and for a commercially available reference
compound (Fluconazole). Gemini 3b, 3e and 3f were found to be the most potent compounds. The results show S. cerevisiae as the most sensitive strain. In contrast, the wild strain of C. parapsilosis was resistant.
相似文献
Ricardo J. Grau (Corresponding author)Email: |