交织对无缝内衣面料结构与伸缩性的影响

本文选择了cooldry吸湿速干涤纶、Thermolite保暖涤纶和Tencel再生纤维及氨纶/锦纶弹力包芯纱分别为面纱和地纱,采用平纹添纱组织和N6上机密度设计与织造了4组16种交织物。对织物的纵横向密度、平方米重及厚度,拉伸伸长率及弹性回复率进行了测试与分析,并采用一元方差分析了交织对无缝内衣面料结构规格与伸缩性影响的显著性。结果表明,交织对织物纵横向密度、平方米重及厚度,拉伸伸长率影响均十分显著,对织物弹性回复率影响不显著;织物密度、单米重、厚度及拉伸率较大的交织方式为：面纱、地纱均为弹力包芯纱与非弹力纱间隔1根排列,或织物面纱为非弹力纱,地纱为弹力包芯纱。其研究结果对无缝内衣的设计与开发具有一定的参考价值。     

咖啡炭纤维纬编面料的开发及其性能

咖啡炭纤维是一类兼具抗菌、保暖、导湿等优质性能的新型功能性纤维,可以根据不同性能要求变换组织设计不同用途的纬编面料。为探究咖啡炭纤维纬编面料的各项性能,利用振荡烧瓶、平板保温仪测试、透气仪测试等方法,对面料的抗菌性、保暖性、透气性等进行测试,并且与锦纶织物进行对比。测试结果表明,咖啡炭纤维的内部微孔效应使得其纬编面料具有较好的抗菌性、保暖性及导湿性能,此外还具有很好的透气性,为日后咖啡炭纤维纬编面料的生产提供参考依据。     

聚乳酸纤维纬编针织面料性能的研究

通过测试5种聚乳酸纤维纬编针织面料的透气、保暖及芯吸性能,探讨聚乳酸纤维纬编针织面料的服用性能.结果表明,聚乳酸纤维纬编针织面料具有良好的透气性及保暖性,但不存在芯吸性能.     

T400纤维无缝运动内衣产品开发与性能研究

为了研究T400纤维在无缝运动内衣上的性能,采用T400纤维、锦纶、锦包氨纱为原料在无缝机上进行编织,选用平针添纱、浮线、集圈3种组织编织试样.经过合理的后整理工艺,对织物拉伸性能、折皱弹性、悬垂性、吸湿性、透气性及散热等性能进行测试,分析T400纤维无缝面料与锦包氨纱传统面料的性能差异.结果 表明,T400纤维为面料...     

无缝针织运动面料服用性能评价

采用Sorona R、锦纶、锦氨包覆纱和Sorona R包氨纶纱为原料,在SM8-TR1型无缝针织机上编织纬平针、纬平添纱、小网眼和大网眼组织,经吸湿排汗整理,组成16种吸湿排汗无缝针织面料。分别测试面料的厚度和克质量、透湿性、速干性、透气性和拉伸弹性等性能,并通过服用性能综合评价分析不同原料和组织结构组合时各种面料的服用性能特点。结果表明,面纱为SoronaR、地纱为锦氨包覆纱的面料综合服用性能最好,该研究为该类产品的设计和开发提供参考。     

Porel纤维针织面料的开发

介绍了Porel纤维的性能和特点,并阐述了采用Porel纤维纱线、蜂窝状纤维纱与涤纶低弹丝开发保暖针织面料的编织工艺、染整工艺,最后对织物的服用性能进行检测。结果表明,该面料的各项服用性能符合相关服用标准,可用于开发保暖内衣。     

桑蚕丝无缝针织物热湿舒适性能研究

采用牵伸倍数2.4的桑蚕丝包覆纱、牵伸倍数2.4和2.8的锦纶包覆纱为里纱,以2×23.3dtex和3×23.3 dtex的桑蚕丝为面纱,以纬平针、1+1假罗纹、1+2假罗纹为组织结构设计试织了18块无缝针织物。对18块无缝针织物的热湿舒适性能进行测试分析,并研究织物的里纱、面纱、组织结构与织物热湿舒适性之间的关系。结果表明:以牵伸倍数2.4的锦纶包覆纱为里纱、2×23.3 dtex桑蚕丝为面纱、组织结构为纬平针的无缝针织物的透湿性和透气性较好;以桑蚕丝包覆纱为里纱、3×23.3 dtex桑蚕丝为面纱、组织结构为1+2假罗纹的无缝针织物的接触冷暖感较好;以锦纶包覆纱为里纱、3×23.3 dtex桑蚕丝为面纱、组织结构为纬平针的无缝针织物的导热性能较好;以桑蚕丝包覆纱为里纱、2×23.3 dtex桑蚕丝为面纱、组织结构为纬平针的无缝针织物的热湿舒适性能较好。     

咖啡炭纤维混纺针织面料的开发与性能研究

在针织圆机上设计开发了5种粘胶/咖啡炭腈纶混纺纬编针织面料,并对织物进行染色后整理加工,对开发的针织面料进行顶破、耐磨、保暖、透湿、导湿等服用性能的测试,咖啡炭混纺针织物比棉针织物耐磨性好,保暖舒适,适合作冬季保暖内衣面料。     

石墨烯功能性纤维混纺西装面料的开发

针对西装产品功能单一性,从产品开发角度出发,设计棉/锦纶/石墨烯功能性纤维混纺西装面料,对织物的透气、防紫外线、保暖及织物风格等性能进行研究。结果表明,石墨烯功能性纤维混纺西装面料具有较好的透气、防紫外线和保暖性能;显示了面料具有适中的柔软度和滑爽度、优良的硬挺度和松紧度,织物综合触感良好。产品的开发研究符合面料开发的预期目标,为功能性西装面料的推广应用提供参考。     

纬编间隔织物表面花纹设计及面料开发

针对常见纬编间隔织物表面花纹单调的问题,采用14.5 tex的Viloft纤维纱线和16.6 tex的涤纶DTY,在2+4针道JH-D双面大圆机上,开发表面花纹新颖的新型纬编间隔织物,阐述面料的编织工艺和染整工艺,并给出面料技术参数。该新型面料表面花纹新颖且保暖透气、穿着舒适,通过改变上机工艺参数,可以设计成格形、折纹形等多种花纹图案,为开发设计新颖纬编间隔织物提供参考。     

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