新型纤维素纤维Tencel的加工及整理

Ｔｅｎｃｅｌ纤维是一种由溶剂纺丝工艺制得的新型纤维素纤维，它不仅具有较高的干，湿强力，还具有天然纤维素纤维的舒适性。但在湿加工过程，Ｔｅｎｃｅｌ纤维易发生原纤化。本文对近年来Ｔｅｎｃｅｌ纤维加工和织物整理过程中如何利用和控制原纤化的研究成果进行了总结。     

新纤维Tencel介绍

新纤维Ｔｅｎｃｅｌ介绍周宏湘对于国内不少消费者来说，Ｔｅｎｃｅｌ（坦西耳）可能是名不见经传的纤维，可是，对于国际纤维界来说，Ｔｅｎｃｅｌ虽然问世不久，却已声名远扬，引人注目，成为炙手可热的纤维生力军。Ｔｅｎｃｅｌ纤维系以木材浆粕为原料，因此，它在分类...     

Tencel纤维及其染整工艺

Ｔｅｎｃｅｌ是溶剂型纤维的商品名称，Ｔｅｎｃｅｌ的纺制工艺与纤维特性不同于传统的粘胶纤维，它的染色过程与纤维素纤维相似。Ｔｅｎｃｅｌ被誉为二十一世纪的绿色纤维，它的纺制是非常清洁的过程，所使用的ＮＭＭＯ溶剂不会污染环境。Ｔｅｎｃｅｌ通过恰当的染整加工可制成具有独特风格和高附加价值的服装。     

Tencel纤维强伸性能分析

对Ｔｅｎｃｅｌ纤维的强伸性能作了测试，分析，指出Ｔｅｎｃｅｌ纤维的强度，模量比粘胶纤维高得多，接近于聚酯纤维，并且湿强，湿模量损失较粘胶低得多，克服了人造纤维纺织品湿强低和保形性差的缺点。     

Tencel/真丝交织物的染整工艺研究

用Ｌ１６（４＾５）正交法优选了Ｔｅｎｃｅｌ／真丝交织物的前处理工艺,比较了直接染料和双活性基活性染料对真丝／Ｔｅｎｃｅｌ纤维同色性染色的影响,并对Ｔｅｎｃｅｌ纤维采用酸性纤维素酶进行去原纤化和整理剂进行防原纤化加工。测定了织物风格的变化。     

Tencel纤维强伸性能分析

对几种Ｔｅｎｃｅｌ纤维和粘胶纤维的强伸性能作了对比测试和分析，指出Ｔｅｎｃｅｌ纤维的强度、模量比粘胶纤维高得多，接近于聚脂纤维，并且湿强、湿模量损失较粘胶低得多。克服了人造纤维纺织品湿强低和保形性差的缺点。     

研究探讨Tencel纤维强伸性能分析

对Ｔｅｎｃｅｌ纤维的强伸性能作了测试、分析，指出Ｔｅｎｃｅｌ纤维的强度、模量比粘胶纤维高得多，接近于聚酯纤维，并且湿强、湿模量损失较粘胶低得多。克服了人造纤维纺织品湿强低和保形性差的缺点。     

Tencel苎麻混纺转杯纱的生产

随着人类绿色环保意识的增强 ,对纺织品也带来新的机遇和挑战。绿色纺织品是 2 1世纪纺织品的发展趋势。Ｔｅｎｃｅｌ纤维属于“绿色环保纤维” ,是人造纤维素纤维 ,由于Ｔｅｎｃｅｌ纤维具有天然纤维的所有的舒适性能 ,而它的强度接近合成纤维 ,是织制绿色纺织品的最佳纺织原材料之一。我们江苏省建湖纺织厂利用被誉为 2 1世纪的绿色环保纤维Ｔｅｎｃｅｌ与天然绿色纤维苎麻纤维混纺 ,成功地开发出Ｔｅｎｃｅｌ苎麻混纺转杯纱Ｕ/ＴＮ55/4532 .8ｔｅｘ纱 ,现介绍如下。1　原料性能1 .1　Ｔｅｎｃｅｌ纤维Ｔｅｎｃｅｌ纤维是再生纤维素纤维 ,…     

Tencel环锭纱机械性能测试与分析

测试了Ｔｅｎｃｅｌ纤维及其成纱的机械物理性能，分析了影响成纱机械性能的因素，指出了Ｔｅｎｃｅｌ环锭纱的机械性能与成纱截面内的纤维细度，成纱捻度，梳理隔距，纤维性质等因素密切相关。     

Tencel织物的染整加工

一种被誉为二十一世纪的绿色纤维—Ｔｅｎｃｅｌ纤维，由于其优良的物理机械性能和独特的原纤化特性，越来越受到人们的重视。文章就Ｔｅｎｃｅｌ纤维织物的染整加工特性作了介绍。     

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