天然植物染料黄RR在有机棉高档毛圈面料中的染色实践

采用阳离子改性剂Catiotec MRC对有机棉高档毛圈面料进行改性,用天然植物染料进行染色,植物染料浓度为10％,通过改变阳离子CatiotecMRC用量、改性温度、氢氧化钠的用量,及染色温度、媒染剂用量,优化改性及染色工艺。最佳染色工艺为阳离子改性剂CatiotecMRC5％,NaOH5g／L,浴比1：20,改性温度80℃,时间30min;植物染料浓度10％,染色温度70℃,时间30min媒染剂2％,浴比1：25。     

阳离子改性剂DL改性蚕丝活性染料染色性研究

选用阳离子改性剂DL对蚕丝纤维进行改性,探讨了改性剂DL及其改性工艺条件对蚕丝纤维活性染料染色性能的影响。研究结果表明,改性剂DL的最佳改性工艺条件为:阳离子改性剂DL质量浓度3.3 g/L,碳酸钠质量浓度10 g/L,浴比1∶30,在60℃条件下改性20 min。经阳离子改性剂DL改性后的蚕丝纤维染色性能显著提高,染色温度为60℃,上染百分率可达85.88%。本改性工艺和染色工艺简单,而且改性蚕丝纤维可以实现活性染料低温和无盐染色,对于蚕丝纤维的低温染色和无盐染色有一定理论和实际意义。     

茶叶色素在阳离子改性棉织物上的染色研究

研究了棉织物的阳离子改性工艺条件及其茶叶色素的染色性能，主要讨论阳离子改性剂用量、烧碱浓度、改性处理时间、改性温度对改性棉织物的茶叶色素染色性能的影响，通过比较染色织物的表面色深K/S值，确定合理的改性工艺。结果表明棉织物经阳离子改性剂改性后，能提高茶叶色素对其上染性．使染色织物表面色深K/S值大大地提高。     

阳离子改性菠萝纤维的无盐无碱染色

采用阳离子改性剂LD-8201对菠萝纤维进行改性,再用雅格素NF进行无盐无碱中性固色染色。探讨了改性工艺中改性剂和碳酸钠质量浓度,改性温度和改性时间对上染率和K/S值的影响;以及染色工艺中元明粉质量浓度、染色温度和染色时间对改性菠萝纤维上染率和K/S值的影响。优化的改性工艺为:阳离子改性剂LD-8201 10 g/L,碳酸钠20 g/L,改性温度70℃,改性时间50 min;雅格素NF系列活性染料的染色工艺:染色温度80℃,染色时间80 min。     

纯棉不均匀改性方法与活性染料染色工艺

介绍了采用自制阳离子改性剂SS对纯棉胚纱进行预处理改性,茶皂素前处理和活性染料染色工艺。重点分析了对纯棉胚纱不均匀改性的阳离子改性剂SS的质量浓度、改性温度和时间对染色深度的影响,得出较佳的预处理工艺:改性剂的质量浓度3 g/L,40℃改性3 min;通过棉织物风格确定茶皂素前处理方法和活性染料染色工艺。结果表明,棉胚纱经阳离子不均匀改性染色后达到段纺的效果。     

阳离子改性剂WLS改性棉织物活性染料无盐染色

用自制阳离子改性剂WLS对棉织物进行阳离子化改性,然后采用活性染料无盐染色.确定了阳离子改性剂WLS改性棉织物的最佳工艺条件及其染色工艺条件,评价了改性织物的染色性能,结果表明:改性棉织物采用活性染料无盐染色,可获得比未改性棉织物常规加盐染色更高的K/S值和染色牢度.阳离子改性剂WLS改性的棉织物可实现活性染料无盐染色,并适用于不同的活性染料.     

棉织物阳离子改性工艺及染色性能探究

为解决天然染料在纯棉织物上上染率低和色牢度差的问题,用自制季铵基阳离子改性剂对棉纤维进行阳离子改性。通过单因素试验,探讨了改性剂浓度、碱剂浓度、改性温度及时间对改性纯棉织物K/S值的影响,确定出纯棉织物的最佳改性工艺条件;在最佳改性工艺条件下用4种天然染料对改性棉纤维和未改性棉纤维进行染色试验。结果表明改性剂改善了天然染料在棉织物上的染色性能,当改性剂浓度为15~20g/L,改性温度为60~70℃,氢氧化钠浓度为6~9g/L,改性时间为50~60min时,K/S值显著提高,但匀染性并未得到明显改善,需深入研究。     

HSQA整理真丝织物的染色性能

讨论了实验室自制阳离子改性剂HSQA对真丝织物的改性效果,改性后的织物用酸性大红3R染色.阳离子改性剂HSQA整理真丝织物的最佳工艺为：整理剂HSQA质量浓度15 g/L,pH值8,浸渍温度60℃.改性后织物的酸性染料染色的耐水洗色牢度有很大改善,断裂强力及回潮率稍有变化.     

棉织物的阳离子改性及活性染料无盐染色

用环氧氯丙烷、二甲胺、乙二胺合成了阳离子改性剂聚环氧氯丙烷-二甲胺,并将其用于棉织物的阳离子改性,然后用活性染料进行无盐染色.确定了阳离子改性剂对棉织物的最佳改性工艺及改性棉织物的染色工艺.结果表明,棉织物经改性后,可用于活性染料的无盐染色,上染率和固色率均高于常规染色.     

新型牛仔纱线阳离子改性工艺研究

将牛仔纱线浸轧含有改性剂的碱性溶液,在一定的温度条件下使改性剂与纤维素纤维产生反应,使纤维素纤维带有阳离子电荷,从而使活性染料染色的纱线具有环染效果及牛仔特有的仿旧风格。分别研究了阳离子改性剂质量浓度、改性温度、氢氧化钠质量浓度、改性车速等工艺参数对改性效果的影响,测试了纱线染色后的K/S值。结果表明:改性剂质量浓度为20g/L、改性温度为80℃、氢氧化钠质量浓度为5g/L,改性时间为10s时改性效果较好。     

Review of techniques to manufacture micro-hydrogel particles for the food industry and their applications

Microgels are ‘soft’ microscopic cross-linked polymeric particles that are being increasingly exploited in a variety of industries for rheology control, encapsulation and targeted delivery. They are valued because of the ability to tune their functionality to address specific applications in oil recovery, coatings, drug delivery, cosmetics, personal care and foods. Food microgels are typically biopolymer hydrogels in the form of microspheres, nanospheres (also called nanogels), spheroids and fibres. The utilisation of engineered microgels in foods has so far been limited, despite their great potential to address several needs in the food industry, including: satiety control, encapsulation of phytonutrients and prebiotics, texture control for healthier food formulations (e.g. reduced fat products), and targeting delivery to specific areas in the digestive tract. We review the scientific and patent literature on the utilisation and manufacturing methods for producing microgels with an emphasis on micro-hydrogels for food applications.     

12—A CRITIQUE OF SOME HYPOTHESES RELATING TO THE HETEROGENEITY OF THE HIGH-SULPHUR PROTEINS OF WOOL

Joubert and Burns prepared a large number of fractions from the high-sulphur proteins of wool and estimated their molecular weights and amino-acid compositions. Their data have been re-examined in order to look for statistically significant interrelations between amino acids and between the proportion of various amino acids and molecular weight. Statistical analysis of the data is also used to examine the credibility of some hypotheses concerning the mechanism of keratin biosynthesis and to provide further evidence for the existence of families of proteins within the high-sulphur fractions of wool.     

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 Latest Data about Development of Chinese Printing Industry in 2013

In the 2014 China（Shanghai）International Printing Week,Director Wang Yanbin released the latest data about development of Chinese printing industry in 2013.According to statistics,in 2013,the total output value of Chinese printing industry exceeded 1trillion Yuan for the first time,reaching 1.03985 trillion Yuan.There were 105,000 printing enterprises in China,employees were 3.415 million.The total asset was 1.06247 trillion Yuan;     

The State Council Issued "Directory of Government Approved Investment Projects(2013 Edition)"

正On December 2nd,2013,the State Council issued the notification of"Directory of Government Approved Investment Projects(2013 Edition)"(hereafter referred to as"notification").It is pointed out in the"notification"that in order to further deepen reforms in investment systems and administrative examination and approval systems,simplify administrative procedures and delegate powers to lower levels,earnestly     

Top Ten News of China's Paper Industry 2013

On December 24th, 2013, the meeting on the selection of top 10 news of China＇s paper industry 2013 sponsored by 〈China Paper Newsletters〉 was held in Beijing. The yearly selection of the top l0 news, which began in 2000, has become a brand activity widely recognized in the industry thanks to the support from the authorities at all levels and public participation.     

National Development and Reform Commission Issued Announcement for Selection of Major Preliminary Research Projects for the "13~(th) Five-Year Plan"

In Apri Commi major p Plan＂ （h 2014, the National Development and Reform ssion issued an announcement for selection of reliminary research projects for the ＂13th Five-Year ereafter referred to as ＂The Announcement＂）     

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 latest scientific     

China textile machinery: taking off in progress

正Among the 1600 exhibitors who take apart in the ITMA ASIA+CITME2014 2/3 are Chinese manufactures.If the numerous figures failed to attract your attention,the increase of quality should draw your focus.To adopt the demand of developing textile machine market,domestic textile machinery enterprises now follow the slogan of"technology drives development"to enhance product competitiveness.Our domestic sellers will showcase product ranging from spinning,weaving,dyeing and printing,     

Anti-mutagenic compounds from corn

In previous studies with aflatoxin-contaminated corn an uncharacteristic response for AFB₁ in the Salmonella/microsomal mutagenicity assay (Ames test) was observed and the presence of anti-aflatoxin factors in the corn was suggested. In the current study, corn was extracted and fractionated using thin layer chromatography (TLC) using different developing solvent systems and the Ames test was used to monitor for anti-mutagenic activity in the corn fractions. Both Salmonella tester strains TA98 and TA100 with metabolic activation (S9) were used. Several corn fractions, at different stages in the isolation and purification process, showed anti-mutagenic dose-responses when exposed to pure AFB₁. Corn extracts were non-toxic to the tester strains and TLC fractions that showed the best anti-mutagenic dose-responses were selected for further partial characterization analyses.