多功能季铵盐型阳离子表面活性剂的合成及应用

合成子兼有抗静电性和匀染性的季铵盐型阳离子表面活性剂：十二烷基二甲基羟乙基氯化铵和十二烷基二甲基乙基溴化铵。反应于腈纶纤维，均有良好的抗静电性和匀染性；且作为抗静电剂处理腈纶后，直接染色仍具有匀染性，纤维染色后还保留较好的抗静电性。     

N-烷基葡萄糖酰胺的合成工艺研究

以D-葡萄糖酸-δ-内酯和脂肪胺(正辛胺、癸胺、十二胺、十四胺、十六胺、十八胺)为原料,合成了N-烷基葡萄糖酰胺.考察了反应时间、反应温度、n(D-葡萄糖酸-δ-内酯)∶n(脂肪胺)对反应的影响.通过单因素法确定了合成N-烷基葡萄糖酰胺的较佳工艺:n(D-葡萄糖酸-δ-内酯)∶n(脂肪胺)=1∶1.1,甲醇作溶剂,60℃下反应3 h,收率均在90%以上.产物用IR、1H-NMR进行表征.结果表明,合成N-烷基葡萄糖酰胺的条件温和,操作简单,收率较高.     

一种超支化聚(胺-酯)复鞣剂的合成及表征

以二乙醇胺和丙烯酸甲酯为原料通过Michael加成反应制得N,N-二羟乙基-3-胺基丙酸甲酯,再由一步法使其与季戊四醇通过酯交换反应制得一种端羟基超支化聚(胺-酯)。采用IR、1H-NMR和GPC等方法对超支化聚(胺-酯)的分子结构进行了表征。从超支化聚(胺-酯)结构出发,分析了其在皮革复鞣中的应用性能及作用机理。     

水溶性壳聚糖衍生物的合成及其在抗静电方面的应用

以壳聚糖和自制2,3-环氧丙基十二叔胺二甲基氯化铵(A)为原料,合成了水溶性良好的N-羟丙基十二烷基二甲基氯化铵壳聚糖(HDCC),并对(A)及HDCC的合成条件进行了探讨.(A)的优化合成条件为:φ(异丙醇)=60%,n(环氧氯丙烷)∶n(十二烷基二甲基胺)=1.1∶1,50℃反应10 h.HDCC的优化合成条件为:以异丙醇(10 mL异丙醇溶解1 g壳聚糖)作为溶剂,在碱剂用量为40%(质量分数)的条件下,85℃反应48 h.将HDCC整理到经过碱减量的涤纶织物上并进行抗静电测试,结果表明:经壳聚糖及HDCC处理的涤纶织物静电压和半衰期明显减小,且加交联剂及催化剂的壳聚糖季铵盐[10%(owf)]处理的织物水洗后静电压和半衰期仍较小,因此,改性壳聚糖具有良好的抗静电及耐洗性能.     

有机硅季铵盐HSQA的合成及性能研究

以十二烷基叔胺、γ-氯丙基三甲氧基硅烷为原料,合成了3-（三甲氧基硅烷基）丙基十二烷基二甲基氯化铵（HSQA）,并用硝酸银滴定其产率;讨论了反应温度、反应时间、溶剂种类、反应物物质的量比对产率的影响.优化反应条件为：n（十二烷基叔胺）：n（γ-氯丙基三甲氧基硅烷）为1.1：1,120 ℃反应9 h,溶剂为N,N-二甲基甲酰胺与异丙醇的混合溶液,KI为催化剂.测定产物的表面张力,并用红外光谱研究合成产物结构.     

液质联用法测定食品塑料包装材料中烷基胺

建立分散固相萃取/超高效液相色谱-串联质谱法(UPLC-MS/MS)同时测定食品塑料包装材料中6种烷基胺类物质(4,4'-亚基双环己胺、青霉胺、N,N-二甲基-1,3-丙二胺、N,N-二乙基-1,3-丙二胺、1,6-己二胺和5-氨基-1,3,3-三甲基环己甲胺)的分析方法。塑料样品用丙酮超声提取,C18和PSA混合净化后经Eclipse Plus C18色谱柱和0.1%甲酸水溶液(体积分数)-乙腈进行梯度洗脱分离,以串联质谱的多反应监测模式检测。6种烷基胺类物质在0.50μg/L~100μg/L浓度范围内线性关系良好,相关系数0.995 8~0.999 3;方法检出限(S/N=3)为0.23μg/kg~0.56μg/kg,平均回收率为83.6%~103%,精密度(n=6)为2.3%~6.1%。     

双季铵盐表面活性剂对涤纶织物的抗静电性能

为提高涤纶织物的抗静电性能,利用双季铵盐表面活性剂的特殊结构,研究双季铵盐表面活性剂对涤纶织物的抗静电性能。在感应静电仪上测试添加了双季铵盐表面活性剂涤纶织物的感应静电压,研究其作为涤纶织物抗静电剂的抗静电性能,探讨双季铵盐表面活性剂的结构、浓度,整理时的焙烘温度、焙烘时间等条件对涤纶织物抗静电性能的影响。结果表明:选择二溴化N,N-二(十八烷基二甲基)-3-氧杂-1,5-戊二铵(6型)作为涤纶织物抗静电整理剂,在其质量浓度为1.5 g/L,焙烘温度110℃,焙烘时间150 s时,具有较好的抗静电效果。     

含氟偶氮分散染料制备及对涤纶的碱性染色性能

分别以3-（三氟甲基）苯胺和2-氨基-6-氟苯并噻唑为重氮组分，N,N-二羟乙基苯胺和N-(2-氰乙基)-N-羟乙基苯胺为偶合组分，设计合成了4只含氟偶氮分散染料。采用1H NMR、13C NMR和LC-MS对合成的4只含氟偶氮分散染料进行结构表征，探究它们的应用性能。结果表明，4只含氟偶氮分散染料摩尔消光系数ε均高于2.3×104L/（mol·cm），在2 g/L NaOH条件下染色上染率达90%以上，染色织物的K/S值高于19，耐摩擦、耐水洗、耐升华色牢度均在4～5级以上，优于常规弱酸性条件下染色的涤纶织物。     

环保型阻燃织物整理剂的制备及性能

采用甲醛、二乙醇胺和亚磷酸二乙酯为原料,合成了阻燃单体N,N-二(2-羟乙基)氨甲基膦酸二乙酯(BHAPE),然后以BHAPE、聚氧化丙烯二醇(PPG2000)、异佛尔酮二异氰酸酯(IPDI)、二羟甲基丙酸(DMPA)、1,4-丁二醇(BDO)和三羟甲基丙烷(TMP)为主要原料制备阻燃水性聚氨酯(WPU),并对棉织物进...     

偶联型阳离子固色剂的制备及在彩色喷墨打印纸中的应用

选取N，N～二羟乙基甘氨酸，十二烷基二甲基甜菜碱，月桂酰基丙基甜菜碱，椰油酰基丙基甜菜碱四种不同的有机羧酸配位基合成了一系列可用于彩色喷墨涂布打印纸涂层的新型偶联型阳离子助荆，并对其进行了表征厦性能检测。而且采用薄层色谱法（TCL）研究了其对喷墨墨水的固色作用。结果表明：当有机羧酸配位基为月桂酰基丙基甜菜碱，加入量为4％时，固色效果最佳。     

Reliable identification of grapevine rootstock varieties using RAPD PCR on woody samples

Since grapevine ( Vitis spp .) rootstock material is being traded increasingly as disbudded woody material a lack of distinctive morphological features on such material necessitates an alternative and reliable means of identification. Methods described here were developed for rapid and efficient extraction of DNA from woody samples rich in phenolic compounds and polysaccharides, and for subsequent identification of varieties by RAPD PCR. Using these methods, and with the application of only one selected RAPD primer, we were able to differentiate sixteen rootstock varieties, including the seven varieties most commonly used in Germany. Problems commonly encountered with reproducibility of RAPD patterns were avoided by choosing primers with a dinucleotide sequence and a high G/C content that allowed a rather high annealing temperature of 45°C. Methods described here should also be useful for other horticultural crops, especially those with woody tissues rich in phenolic compounds and polysaccharides.     

An internet compendium of analytical methods and spectroscopic information for monomers and additives used in food packaging plastics

An internet website (http://cpf.jrc.it/smt/) has been produced as a means of dissemination of methods of analysis and supporting spectroscopic information on monomers and additives used for food contact materials (principally packaging). The site which is aimed primarily at assisting food control laboratories in the European Union contains analytical information on monomers, starting substances and additives used in the manufacture of plastics materials. A searchable index is provided giving PM and CAS numbers for each of 255 substances. For each substance a data sheet gives regulatory information, chemical structures, physico-chemical information and background information on the use of the substance in particular plastics, and the food packaging applications. For monomers and starting substances (155 compounds) the infra-red and mass spectra are provided, and for additives (100 compounds); additionally proton NMR are available for about 50% of the entries. Where analytical methods have been developed for determining these substances as residual amounts in plastics or as trace amounts in food simulants these methods are also on the website. All information is provided in portable document file (PDF) format which means that high quality copies can be readily printed, using freely available Adobe Acrobat Reader software. The website will in future be maintained and up-dated by the European Commission's Joint Research Centre (JRC) as new substances are authorized for use by the European Commission (DG-ENTR formerly DGIII). Where analytical laboratories (food control or other) require reference substances these can be obtained free-ofcharge from a reference collection housed at the JRC and maintained in conjunction with this website compendium.     

Aroma characterization of various apricot varieties using headspace–solid phase microextraction combined with gas chromatography–mass spectrometry and gas chromatography–olfactometry

The characterization of the aromatic profile of several apricot cultivars with molecular tracers in order to obtain objective data concerning the aromatic quality of this fruit was undertaken using headspace–solid phase microextraction (HS–SPME). Six apricot cultivars were selected according to their organoleptic characteristics: Iranien, Orangered, Goldrich, Hargrand, Rouge du Roussillon and A4025. The aromatic intensity of these varieties measured by HS–SPME–Olfactometry were defined and classified according to the presence and the intensity of grassy, fruity and apricot like notes. In the six varieties, 23 common volatile compounds were identified by HS–SPME–GC–MS. Finally, 10 compounds, ethyl acetate, hexyl acetate, limonene, β-cyclocitral, γ-decalactone, 6-methyl-5-hepten-2-one, linalool, β-ionone, menthone and (E)-hexen-2-al were recognized by HS–SPME–GC–O as responsible of the aromatic notes involved in apricot aroma and considered as molecular tracers of apricot aromatic quality which could be utilized to discriminate apricot varieties.     

Tests of potential functional barriers for laminated multilayer food packages. Part I: Low molecular weight permeants

The advent of the functional barrier concept in food packaging has brought with it a requirement for fast tests of permeation through potential barrier materials. In such tests it would be convenient for both foodstuffs and materials below the functional barrier (sub-barrier materials) to be represented by standard simulants. By means of inverse gas chromatography, liquid paraffin spiked with appropriate permeants was considered as a potential simulant of sub-barrier materials based on polypropylene (PP) or similar polyolefins. Experiments were performed to characterize the kinetics of the permeation of low molecular weight model permeants (octene, toluene and isopropanol) from liquid paraffin, through a surrogate potential functional barrier (25 μm-thick oriented PP) into the food simulants olive oil and 3% (w/v) acetic acid. These permeation results were interpreted in terms of three permeation kinetic models regarding the solubility of a particular model permeant in the post-barrier medium (i.e. the food simulant). The results obtained justify the development and evaluation of liquid sub-barrier simulants that would allow flexible yet rigorous testing of new laminated multilayer packaging materials.     

Analysis of benzo[a]pyrene in spiked fatty foods by second derivative synchronous spectrofluorimetry after microwave-assisted treatment of samples

A simple, rapid and inexpensive method has been developed for the determination of benzo[a     

The development of reference materials for paralytic shellfish poisoning toxins in lyophilized mussel. II: Certification study

This paper describes the second part of a project undertaken to develop certified mussel reference materials for paralytic shellfish poisoning toxins. In the first part two interlaboratory studies were undertaken to investigate the performance of the analytical methodology for several PSP toxins, in particular saxitoxin and decarbamoyl-saxitoxin in lyophilized mussels, and to set criteria for the acceptance of results to be applied during the certification exercise. Fifteen laboratories participated in this certification study and were asked to measure saxitoxin and decarbamoyl-saxitoxin in rehydrated lyophilized mussel material and in a saxitoxin-enriched mussel material. The participants were allowed to use a method of their choice but with an extraction procedure to be strictly followed. The study included extra experiments to verify the detection limits for both saxitoxin and decarbamoyl-saxitoxin. Most participants (13 of 15) were able to meet all the criteria set for the certification study. Results for saxitoxin.2HCl yielded a certified mass fraction of <0.07 mg/kg in the rehydrated lyophilized mussels. Results obtained for decarbamoyl-saxitoxin.2HCl yielded a certified mass fraction of 1.59+/-0.20 mg/kg. The results for saxitoxin.2HCl in enriched blank mussel yielded a certified mass fraction of 0.48 +/- 0.06 mg/kg. These certified reference materials for paralytic shellfish poisoning toxins in lyophilized mussel material are the first available for laboratories to test their method for accuracy and performance.     

Announcing a new international peer-reviewed journal:Food Science and Human Wellness now accepting manuscript submission in English

<正>We are pleased to announce the launch of a new international peer-reviewed journal-Food Science and Human Wellness,ISSN 2213-4530,which is an open access journal,produced and hosted by Elsevier B.V.on behalf of Beijing Academy of Food Sciences.Food Science and Human Wellness is an international peer-reviewed English journal that provides a forum for the dissemination of the     

Chinese CTP Market

According to Printing and Printing Equipment Industries Association of China（PEIAC）＇s statistics to the plate manufucturer in China, in 2013, the actual offset plate production has reached 346 million square meters in China. Among them, the CTP production volume was 245 million square meters, up by 11% than that of last year; the total sales of the CTP plate was 239 million square meters, up by 13%.     

Preparatory Work of Print China 2015 is Going Smoothly

正Held at Guangdong Modern International Exhibition Center,Print China 2015 will cover 7exhibition halls,besides the original Hall No.3,4,5,6,7,the newly built F zone of Hall 3 will be used too.The total area will be140,000 square meters.Hall 3:Offset and large printing equipment,package printing equipment,post press