亲水性氨基硅油在针织物上的应用探讨

氨基硅油具有柔软、滑爽、易分散于水中等特性 ,但存在高温易变黄、亲水性差、抗污性差、剥除硅油困难的缺点。通过聚醚对氨基硅油进行改性 ,使其亲水性增加。亲水性氨基硅油整理针织物后 ,织物的亲水性和抗黄变性提高     

新型氨基硅油柔软剂BSO的合成及应用性能

用γ-丁内酯和γ-（2，3-环氧丙氧）丙基三甲氧基硅烷对氨基硅油ASO进行改性，得到新型氨基硅油BSO．介绍了氨基硅油柔软剂BSO的合成方法，并比较了两种氨基硅油制备的微乳液织物整理剂在应用过程中的柔软性、泛黄程度、亲水性、与阴离子型荧光增白剂的相容性、耐电解质性、耐碱性和乳液稳定性等基本性能。     

反应性氨基硅油的合成与应用性能研究

以α，ω-二羟基聚二甲基硅氧烷(WS-62M)和N-β-氨乙基-γ-氨丙基三甲氧基硅烷(SG—Si900)为原料，胺为催化剂，通过酯交换反应，合成了适用于织物柔软剂的反应性氨基硅油，并确定了最佳合成条件．应用结果表明，反应性氨基硅油整理后的织物有优异的柔软性、滑爽性、回弹性以及很高的耐洗性，对整理织物的白度影响很小．     

阳离子氨基硅油整理对竹原纤维织物服用性能的影响

通过对竹原纤维织物进行阳离子氨基硅油柔软整理,并测试整理后织物的服用性能,探讨了阳离子氨基硅油柔软整理对竹原纤维织物服用性能的影响.结果表明:采用阳离子氨基硅油对竹原纤维织物整理后,竹原纤维织物的悬垂性、抗皱性得到明显改善,透湿凉爽性能增加,服用性能得到改善,而柔软整理使织物的断裂强力、撕破强力和顶破强力有所降低.     

聚醚嵌段亲水性氨基硅油的制备及性能

采用红外光谱对自制的聚醚嵌段亲水性氨基硅油进行结构表征,并将其应用于纯棉织物的柔软整理,考察了处理浴pH值、温度、整理剂用量和烘干温度对柔然整理效果的影响。结果表明,优化的聚醚嵌段亲水性氨基硅油柔软整理工艺为:处理浴pH值6,温度40℃,柔软剂用量3%~5%(om f),烘干温度90℃;处理浴温度、pH值和烘干温度对整理织物白度的影响较为显著,整理织物的色泽、柔软性、亲水性等性能对各工艺参数的耐受性极强。     

新型季铵化改性氨基硅油柔软剂的应用性能研究

采用自制环氧丙基十二烷基二甲基氯化铵对普通氨基硅油进行季铵化改性,合成了一种新型季铵化改性氨基硅油柔软剂.对自制氨基硅油及其改性产物进行乳化,得到了稳定性良好的硅油乳液.将其应用于纯棉织物整理,结果表明:经该新型季铵化改性氨基硅油柔软剂(20g/L)整理后,亲水性为10.2 s、较改性前减少65 s,织物的白度比未整理仅下降2.4、但比改性前提高3.1.同时,该整理织物比未整理织物的撕破强力可提高51.6％,折皱回复角则提高44.4°.该新型柔软剂手感柔软且富有弹性,抗黄变性及亲水性好.     

氨基聚醚硅油SEA的制备及其应用

为克服氨基硅油乳液整理后的织物疏水、不吸汗、穿着舒适感差等问题,本文以八甲基环四硅氧烷（D4）、1,3-二缩水甘油醚氧基丙基-1,1,3,3-四甲基二硅氧烷（GP-600）和端氨基聚醚（ED600）为原料制备一种新型氨基聚醚硅油SEA,并将其用于纯棉织物的柔软整理。探讨在不同焙烘温度、不同预烘温度和不同柔软剂用量整理工艺条件下对织物整理效果的影响。结果表明,柔软剂用量为5g/L,预烘温度为90℃,焙烘温度为130℃,整理后织物白度、柔软性、亲水性效果最好。     

亲水性氨基硅油的合成及其应用

以D4、烯丙基缩水甘油醚、不饱和聚醚等原料，经开环共聚、氢硅加成、氨解开环等多步反应，合成了亲水性氨基硅油柔软剂，并确定了最佳合成条件．将其应用于纯棉织物整理上，获得了良好的亲水性、白度及柔软和滑爽的手感．     

亲水氨基硅油NB的应用

针对普通氨基硅油亲水性差、易泛黄和稳定性差的缺点,研制了亲水氨基硅油NB,并将其应用于不同织物的整理加工,结果证明:亲水氨基硅油NB整理织物的手感和亲水性提高,抗静电性得到改善,同时能保持原有白度。     

新型聚醚改性氨基硅油问世

湖南轻工研究所周宇鹏研究员（享受政府特殊津贴）最近研制成功一类新型聚醚改性氨基硅油。该类聚醚改性氨基硅油可以根据聚硅氧烷及聚醚分子量的大小和氨值的多少制成自乳化或水溶性的织物防水剂、柔软剂、消泡剂、起泡剂、织物柔软抗静电剂等。合成的聚醚改性氨基硅油织物柔软剂与现有的氨基硅油和水溶性硅油相比，具有如下优点：（１）聚醚改性氨基硅油不需乳化剂，也不需特殊乳化设备就能形成稳定的乳液或微乳；（２）对织物的柔软效果优于同等含固量的氨基硅油微乳液，远优于水溶性硅油；（３）聚醚改性氨基硅油对织物具有一定的抗静电…     

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.     

Chlorohydrins of bisphenol A diglycidyl ether (BADGE) and of bisphenol F diglycidyl ether (BFDGE) in canned foods and ready-to-drink coffees from the Japanese market

BADGE.2HCl and BFDGE.2HCl were determined in 28 samples of ready-to-drink canned coffee and 18 samples of canned vegetables (10 corn, 5 tomatoes and 3 others), all from the Japanese market. HPLC was used as the principal analytical method and GCMS for confirmation of relevant LC fractions. BADGE.2HCl was found to be present in one canned coffee and five samples of corn, BFDGE.2HCl in four samples of canned tomatoes and in one canned corn. No sample was found which exceeded the 1mg/kg limit of the EU for the BADGE chlorohydrins. However the highest concentration was found for the sum of BFDGE.2HCl and BFDGE.HCl.H₂O at a level of 1.5mg/kg. A Beilstein test confirmed that all cans containing foods contaminated with BADGE.2HCl or BFDGE.2HCl had at lest one part coated with a PVC organosol.     

European priorities for research to support legislation in the area of food contact materials and articles

A strong science base is required to underpin the planning and decision-making process involved in determining future European community legislation on materials and articles in contact with food. Significant progress has been made in the past 5 years in European funded work in this area, with many developments contributing to a much better understanding of the migration process, and better and simpler approaches to food control. In this paper this progress is reviewed against previously identified work-areas (identified in 1994) and conclusions are reached about future requirements for R&D to support legislation on food contact materials and articles over the next 5 or so years.     

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