烷基糖苷与辛基咪唑啉复配体系的性能研究

用烷基糖苷APG0810与两性离子表面活性剂辛基咪唑啉进行复配,测定了复配体系的表面活性、泡沫性能、润湿力和乳化性能。结果表明,APG0810与辛基咪唑啉的复配体系具有一定的协同增效作用。当m(APG0810)∶m(辛基咪唑啉)=5∶1时,对表面活性的增效作用最好,其临界胶束浓度(cmc)为577.53 mg/L,最低表面张力(γcmc)为28.20 m N/m。同时,通过与APG0810进行复配,辛基咪唑啉的润湿力和乳化性能均得到改善,并且在m(APG0810)∶m(辛基咪唑啉)=5∶1时,效果达到最好。     

烷基糖苷与阴离子表面活性剂 复配体系的泡沫和润湿性能

将发泡力及泡沫稳定性较好的2种烷基糖苷表面活性剂月桂基糖苷(APG1214)和椰油基糖苷(APG0814B64)分别与4种阴离子表面活性剂十二烷基硫酸钠(K12)、十二烷基硫酸铵(K12A)、月桂醇聚氧乙烯醚硫酸钠(AES)和月桂醇聚氧乙烯醚硫酸铵(AESA)复配,考察复配体系的发泡性能和润湿性能。结果表明,APG1214与K12、AES在泡沫性能和润湿性能上都表现出显著的协同增效作用,而与K12A、AESA的协同增效作用主要体现在润湿性能上。APG0814B64与K12、AES在发泡性能方面表现出协同增效作用。     

NaCl对阴离子/非离子复配表面活性剂的性能影响

研究了NaC l对阴离子表面活性剂脂肪醇聚氧乙烯醚硫酸钠(AES)与非离子表面活性剂烷基多苷(APG)复配体系表面活性、乳化力、发泡性能的影响,发现NaC l的加入量在低含量范围内对提高复配体系表面活性及发泡能力有显著提高,同时对体系乳化力变化不明显。     

烷基糖苷-十二烷基甜菜碱复配性能及无机盐的影响

考察了非离子型表面活性剂烷基糖苷(APG)和两性表面活性剂十二烷基甜菜碱(BS-12)之间的复配性能,测定了不同摩尔比的APG和BS-12复配体系的表面张力、泡沫和乳化性能,并且研究了无机盐对复配体系表面活性的影响。结果表明,与单独任一表面活性剂体系相比,APG和BS-12复配体系具有较好的表面活性,呈现明显的协同增效作用;在摩尔比为3∶7时,复配体系的表面活性最高、起泡性能最好、形成的泡沫和乳状液最稳定,协同增效作用最显著。此外,无机盐的加入提高了复配体系的表面活性,当NaCl浓度为0.03 mol·L-1时,表面张力和临界胶束浓度最小,表面活性最高;而对于无机盐,其离子价态越高,提高表面活性程度越明显;相比之下,阳离子提高复配体系表面活性的能力大于阴离子。     

Gemini表面活性剂与月桂醇醚羧酸盐的复配性能研究

研究了Gemini阳离子表面活性剂双十二烷基季铵盐(12-3(OH)-12)与阴离子表面活性剂月桂醇聚氧乙烯醚羧酸钠(AE9C)复配体系的稳定性、表面活性、泡沫性能、润湿性和乳化性能。结果表明,12-3(OH)-12与AE9C复配体系稳定性好,表现出很好的协调增效作用。当n(12-3(OH)-12)∶n(AE9C)=1∶2时,增效作用最为明显,其临界胶束浓度CMC为1.49 mmol/L,最低表面张力γCMC=30.15 m N/m,均低于任一单组分。复配体系的泡沫、润湿和乳化性能均要优于任一单组分,并且都在n(12-3(OH)-12)∶n(AE9C)=1∶2时表现出最佳性能。     

环保型餐具洗涤剂用表面活性剂复配体系研究

表面活性剂的许多特性在单独使用时往往不能充分发挥。但当一种表面活性剂与其他表面活性剂复配时 ,溶液的物理化学性质会发生明显的变化 ,其表面活性优于各个组分的性能。从表面活性剂复配着手 ,选择阴离子型表面活性剂仲烷基磺酸钠 (SAS)、脂肪醇聚氧乙烯醚硫酸钠 (AES)和非离子型表面活性剂烷基多糖苷 (APG)进行复配实验。改变不同表面活性剂之间的配比 ,通过对临界胶团浓度 (CMC)的分析研究 ,解释了胶团的形成过程和胶团的具体组成。APG SAS、APG AES体系分子间相互作用系数 βm 为负值 ,表明它们在胶团中分子间的相互作用比同种分子间的相互作用要强 ;而且| βm|的值在 3附近 ,表明APG SAS、APG AES体系分子间存在中等强度的相互作用 ;同时在形成胶团能力方面符合增效作用判断准则 ,这些结论将有助于实际配方的确定     

烷基多苷物化性能的研究

对不同烷链长度的烷基多苷的表面张力等物化性能进行了评价 ,发现短烷链的APG有丰富的泡沫和优良的润湿力 ,而长烷链烷基多苷具有优良的降低表面张力能力和乳化力。烷基多苷与脂肪醇醚硫酸盐和甜菜碱复配物的性能测定表明 ,除乳化力外 ,烷基多苷与脂肪醇醚硫酸盐的复配物都显示了一定的协同增效作用。烷基多苷与甜菜碱复配物在所测定的性能中都显示了协同增效作用。     

烷基糖苷应用性能研究

对3种烷基糖苷(APG-06、APG-0810、APG-1214)在不同温度、不同水硬度下的表面张力、润湿、乳化、起泡性以及去污性进行了研究。结果表明:临界胶束浓度(CMC)随着烷基链增加而降低,随着温度的升高APG-06的表面张力值(γCMC)略有升高;硬度离子使APG的CMC值降低,但对γCMC影响不大;APG-0810对帆布的润湿性最好;对液体石蜡的乳化能力随着烷基链的增加而增加,硬水中的乳化能力优于软水;泡沫性均较好;对蛋白污布的去污能力均较差。     

糖苷类表面活性剂与双癸基二甲基氯化铵复配体系的物化性能及相行为

研究了糖苷类表面活性剂C8/10烷基糖苷(APG)、C12/14醇醚糖苷(AEG)和C12/14醇醚糖苷柠檬酸单酯二钠盐(AEG-EC)与双癸基二甲基氯化铵(DDAC)复配体系的物化性能和相行为。结果表明,APG/DDAC体系的表面张力、泡沫性能和乳化性能有增效作用,润湿性能无增效作用。AEG/DDAC体系的泡沫性能和乳化性能有增效作用,润湿性能无增效作用。AEG-EC/DDAC体系的表面张力和润湿性能有增效作用,泡沫性能无增效作用。用偏光显微镜研究了三元体系的相行为,结果表明,随着DDAC含量的增加,糖苷类表面活性剂/DDAC/水体系的三元相图依次出现胶束相、胶束-液晶共存相和层状液晶相。     

无患子皂苷的复配及其在构筑Ni(OH)2/NiOOH复合材料中的应用

以无患子为原料,提取得到天然表面活性剂无患子皂苷,研究其与阳离子表面活性剂十六烷基三甲基溴化胺(CTAB)的复配性能,并将无患子皂苷和复配表面活性剂用于溶剂热法制备氢氧化镍复合材料.考察了反应溶剂、温度和表面活性剂对材料形貌的影响.研究表明:复配体系具有优异协同增效作用,当无患子皂苷与CTAB以质量比50∶50复配时,...     

Synthesis and Properties of Dodecyldiethoxylamine Oxide

Dodecyldiethoxylamine oxide (DDEAO) was synthesized by the reaction of dodecyldiethoxylamine with hydrogen peroxide in water as the solvent. Surface activity, wetting ability and emulsifying capacity were investigated and compared with that of dodecyldimethylamine oxide (DDMAO). Results indicate that the critical micelle concentration (CMC) of DDEAO is lower than that of DDMAO, while its surface tension at CMC (γ_CMC) is slightly higher. The wetting ability of DDEAO is similar to that of DDMAO. For its capacity of emulsifying liquid paraffin, DDEAO is found to be better than DDMAO, but it is the opposite for emulsifying soybean oil. The foaming properties and thickening function of DDEAO in mixtures with alcohol ether sulfate and alkylbenzene sulfonate were also studied. As expected, complex surfactant systems exhibit good foaming ability and DDEAO exhibits a good thickening function.     

Physicochemical Properties and Phase Behavior of Didecyldimethylammonium Chloride/Alkyl Polyglycoside Surfactant Mixtures

Mixed surfactant systems, used in many formulations, have aroused great attention and interest from researchers and industry due to the possibility of synergism. Alkyl polyglycoside (APG) and didecyldimethylammonium chloride (DDAC) mixtures combine the excellent properties of pure surfactants and play an important role in the development of multi‐functional washing products. To study the synergism between APG and DDAC, the physicochemical properties of different mixed systems have been investigated. The critical micelle concentration (CMC) is about 180 mg·L^?1 and the surface tension at the CMC is about 26.0 mN·m^?1 at a mass fraction of 40 % DDAC (ω_DDAC40 %). The values are significantly lower than pure surfactants. The foaming property shows the best performance at ω_DDAC20 %. When the mass fraction of DDAC is 80 %, the mixture exhibits better wetting and emulsifying properties. Synergism was observed in surface tension, foaming and emulsifying properties, while the wetting ability and detergency exhibited no such effects. Phase behavior of the APG/DDAC/water ternary system has also been carried out by polarized optical microscope. The phase diagram is characterized by a micellar phase, a region where lamellar and micellar phases coexist and a lamellar phase.     

无患子皂素水提液发酵精制联产表面活性剂鼠李糖脂

以无患子皂素水提水解液为底物,发酵生产生物表面活性剂,在精制无患子皂素的同时发酵联产生物表面活性剂鼠李糖脂。经铜绿假单胞菌发酵后发酵完成液中不含葡萄糖,葡萄糖的消耗速率与接种量成正相关,在发酵液中额外添加大豆油可促进表面活性剂亲油基团的生成,溶液表面活性进一步提高。发酵后溶液中表面活性物质浓度达到50.8g/L,比对照组提高了16.1%,溶液表面张力明显降低。接种10%的菌种发酵获得的无患子皂素复合产物干粉其临界胶束浓度由10g/L降低到2.5g/L,临界胶束浓度下的复合产物水溶液表面张力比未接种菌种的低18.67%,复合产物具有很好的起泡性能及更高的泡沫稳定性。     

烷基多苷的复配性能研究

用APG 0810、APG 0814和APG 1214同AES或BS 12进行复配,测定了复配样品的表面张力、润湿力、乳化力及发泡性能,并对复配规律进行了讨论。结果表明:APG+AES或APG+BS 12的表面张力呈现明显的协同效应;复配物中,APG 0814或APG 1214的质量分数为20%,就可使体系的表面张力由AES的39.9mN/m降至36.2mN/m;APG+BS 12或APG+AES两种复配体系的润湿力都显示协同效应,前者优于后者,以APG 0810+BS 12为最佳,复配物中当APG 0810质量分数为20%时,可将BS 12的润湿时间从11.2s降至6.2s;APG+AES体系的乳化力具有负的协同效应,而APG+BS 12体系显示正的协同效应,以APG 0810+BS 12为佳;APG+AES、APG+BS 12复配体系的发泡性能都显示协同效应,后者优于前者,尤以APG 1214+BS 12为佳,在复配物中当APG 1214的质量分数为20%时,体系的初始泡沫体积达494mL,5min时的泡沫达459mL。     

无患子皂苷及其复配体系的泡沫性能研究

测定了无患子皂苷的表面活性特征参数，包括HI。B值、浊点、酸值、皂化值、临界胶柬浓度（CMC）、表面张力值（γcmc）等。研究了无患子皂苷与阴离子、非离子和两性表面活性剂复配后的起泡和稳泡结果．从微观结构上分析了复配体系，为无患子皂苷在洗涤剂配方中的应用提供了理论依据。     

磺酸盐Gemini表面活性剂物化性能的研究

磺酸盐Gemini表面活性剂因具有较高的表面活性、耐温及抗盐性好等特点而受到国内外学者的广泛关注。分别采用量高法和搅动法测定了磺酸盐Gemini表面活性剂TADS-10的润湿性能和起泡性能,采用分水时间法测定了TADS-10对液体石蜡的乳化能力。结果表明:磺酸盐Gemini表面活性剂TADS-10亲油表面的接触角随浓度的增大而减小,而亲水表面的接触角随浓度的增大而增大;在临界胶束浓度附近,TADS-10的起泡性能趋于稳定;随着温度的升高,其起泡性能增强;与传统表面活性剂相比,TADS-10具有较强的乳化性能。     

Green Synthesis,Characterization, and Properties of Acyl Lysine,Serine, Threonine,and Methionine Derived from Three Types of Natural Oils

The development of environmentally benign products has been the subject of growing interest in the field of surfactant chemistry. Acyl amino acid surfactants bearing lysine, serine, threonine, and methionine residues were synthesized using natural oils extracted from coconut, palm kernel, and soybean as acyl donors. The chemical structures were confirmed by high-performance liquid chromatography (HPLC/MS) and infrared (IR) spectra. Their surface activities, ion-specific effects, detergency, and foam properties were studied systematically. The critical micelle concentration (CMC) values depend significantly on amino acid and oil types and follow the orders: (i) Lys > Thr ≈ Ser > Met and (ii) Coconut ≈ Palm kernel > Soybean oil. Interestingly, the ion-specific effects showing that the γ_CMC value decreases with increasing counterion size and hydrophobicity were observed, and the results were consistent with the famous Hofmeister series. The detergency ability of acyl amino acid surfactants is better than multiple traditional surfactants in distilled water. Although the detergency ability of our products for oil-soiled swatches decreased significantly in hard water, this problem was solved by the C-Lys-Na/AES mixed system showing excellent synergistic effects. Excellent foamability and foam stability were achieved for acyl threonine and serine bearing hydroxyl groups on their headgroups, suggesting that the packing of these surfactants at the air–water interface was assisted by hydrogen bonding.     

一种高效浓缩洗衣液的研制

初步研究了脂肪醇聚氧乙烯醚硫酸钠(AES)、醇醚羧酸盐(AEC_9)、改性油脂、烷基糖苷(APG)及异构醇聚氧乙烯醚等5种表面活性剂在浓缩洗衣液中的应用,通过对去污力、泡沫性能、水溶分散性和酶活稳定性等的测试,将此几种表面活性剂与其他助剂复配,得到一种低泡、高效浓缩洗衣液。测试结果表明,自制浓缩洗衣液稳定,去污力强、可达到4倍浓缩的效果,水溶分散性好,无凝胶出现,酶活稳定性达87.1%。