Lyocell法竹纤维素纤维的结构与吸湿性能的研究

分析研究了Lyocell法竹纤维素纤维的结构与吸湿性能,并与黏胶法竹纤维素纤维及Lyocell法木纤维素纤维进行了比较。研究表明:Lyocell法竹纤维素纤维的截面形状接近圆形或椭圆形,表面光洁、无裂纹,与Lyocell法木纤维素纤维相似,明显不同于黏胶法竹纤维素纤维;其结晶度也和Lyocell法木纤维素纤维接近,均大于黏胶法竹纤维素纤维;其平衡回潮率及吸湿放湿速率较Lyocell法木纤维素纤维高,但低于黏胶法竹纤维素纤维。     

再生纤维素纤维绿色环保技术新进展

纤维素是重要的可再生纤维原料。改善再生纤维素纤维生产的可持续性,减少对环境的冲击是再生纤维素纤维生产商的重要任务。本文重点介绍了近年来再生纤维素纤维技术的新进展,主要包括熔纺再生纤维素纤维、生物酶纤维素直接纺丝工艺、原纤化制纳米纤维素纤维以及高附加值铜氨纺粘非织造技术等,并对我国以粘胶纤维生产为主的再生纤维素纤维行业提出了环境友好发展建议。     

新型多组分纤维纺织品染整(二十一)

5.3纤维素纤维/锦纶纺织品(CA类)染整 5.3.1纤维素纤维/锦纶纺织品种类及染整概述 (1)纤维素纤维/锦纶纺织品种类 纤维素纤维/锦纶纺织品中,由于锦纶6的结构稳定性和耐热性等物理机械性能不及锦纶66,目前这类交织物中大多使用锦纶66纤维;而纤维素纤维主要采用棉、粘胶等纤维,麻和其它再生纤维素纤维使用较少.     

离子液体新介质在高值化纤维素纤维中的应用

为了探索高值化纤维素纤维的发展,综述了离子液体新介质在高值化纤维素纤维中的应用,详细介绍了离子液体溶剂体系、纺丝过程与技术的进展,指出离子液体新介质应用于纤维素纤维理论研究已比较完善,形成一定的技术积累,处在工程化的前期。列举了多种离子液体为溶剂的高值化纤维素纤维产品,提出高值化纤维素复合纤维与纤维素衍生物纤维是离子液体在纤维素纤维产品开发领域的发展方向。     

微米级和纳米级纤维素纤维的制备和应用

在生物合成中,纤维素聚合物聚集形成微细纤维,微细纤维再聚集形成纤维素纤维。通过一定方法可以将这些纤维分解成微米级和纳米级的纤维素纤维。文中主要介绍了微米级和纳米级纤维素纤维的来源及分离方法。利用酸水解法制备了纳米级纤维素纤维。在保持其他工艺参数不变的条件下,通过改变水解时间得到了微米级和纳米级2种纤维素纤维。通过动态光散射和原子力显微镜研究了这2种纤维素纤维,同时将其用作聚乙烯醇基材中的增强剂。结果表明,纤维素纤维的形态特征对最终复合材料的机械性能有显著影响。     

光热功能再生纤维素纤维制备及性能研究

制备碳化锆粉体分散体系,并将其加入再生纤维素纤维纺丝溶液中,采用湿法纺丝工艺制备光热功能再生纤维素纤维。详细介绍光热功能再生纤维素纤维的制备方法,并对该纤维素纤维的光热功能、形态结构以及结晶结构进行测试。结果表明,所制备的碳化锆分散体系具有良好的分散效果;光热功能再生纤维素纤维具有较强的红外吸收和可见光吸收能力,能够有效地将光能转化为热能;光热功能再生纤维素纤维的形态结构与普通再生纤维素纤维类似,碳化锆粉体在纤维中分布均匀;碳化锆光热功能再生纤维素纤维含有结晶的碳化锆粉体且在再生纤维素纤维中具有良好的分散性。     

纤维素纤维类织物接枝阻燃的研究现状

本文介绍了纤维素纤维的燃烧机理和阻燃机理,明确了对纤维素纤维类织物进行阻燃研究的必要性,阐述了对纤维素纤维进行接枝阻燃的研究现状,其中重点介绍了光接枝纤维素纤维的阻燃改性的研究现状和高能电子束对纤维素纤维进行阻燃接枝改性的研究现状,并且指明绿色环保的纤维素纤维阻燃的方式会有很好的发展前景。     

再生纤维素纤维的发展

介绍了再生纤维素纤维的发展现状,几种新型再生纤维素纤维及再生纤维素纤维的发展前景。     

胶原蛋白改性纤维素纤维的研究进展

探讨了胶原蛋白改性纤维素纤维的研究进展。介绍了纤维素纤维和胶原蛋白的特点,以及胶原蛋白对纤维素纤维的改性机理。研究了胶原蛋白对棉纤维和麻纤维的改性。指出:改性后纤维素纤维的强度降低,柔软度、染色性等改善,织物的服用性提高。认为:胶原蛋白改性天然纤维素纤维的研究还处于初级阶段,改善胶原蛋白改性纤维素纤维的力学性能,拓展胶原蛋白改性纤维素纤维的应用范围是未来的研究方向。     

再生纤维素纤维的现状与发展方向

再生纤维素纤维由于在原料、性能等方面的优势,发展前景十分可观。文章介绍了世界再生纤维素纤维的现状和更新换代技术的发展,并展望了再生纤维素纤维的发展前景。文章还指出,再生纤维素纤维的更新技术,如Lyocell、纤维素氨基甲酸酯、Celsol、湿纺法等,具有强大的生命力,是纤维素纤维的发展方向。     

Modal纤维织物服用舒适性探讨

Modal纤维是一种新型的高湿模量再生纤维素纤维,属于环保生态型纤维。通过对Modal纤维织物的吸湿性、透湿性和透气性的测试及分析,认为Modal纤维极适合于夏季服装面料的开发。     

粘胶基甲壳素纤维的性能测试分析

对粘胶基甲壳素纤维性能进行了测试，并与粘胶纤维、棉纤维、羊毛纤维和涤纶纤维进行了对比分析，指出：粘胶基甲壳素纤维是一种新型的纤维素纤维，在产品开发时，应注意将产品与其自身特点相结合，选择最佳的纺纱方案。     

Chemical composition of alkaline-pretreated sugarcane bagasse and its effects on the physicochemical characteristics of fat-replaced sausage

The potential of cellulose from sugarcane bagasse used for pork sausage was investigated. The purity level of cellulose fibre from sugarcane bagasse and the functional characteristics in pork sausage were studied. The differences in the sugarcane fibre and sausage characteristics were strongly related to the cellulose/lignin content of the extracted cellulose under different amounts of bleaching. Bleached sugarcane fibres showed better water (3.55) and oil (2.34) holding capacity in comparison with untreated fibre (2.92 and 2.38, respectively). The sugarcane fibres in each treatment stage showed different effects on sausage properties. Sausages with 1% cellulose fibres added had an improved texture profile, but the addition of 3% cellulose fibres to sausages resulted in a higher cooking yield. Consumers considered the sensory characteristics of all sausages as acceptable. These results indicated that low levels of cellulose extracted from sugarcane bagasse could be added and maintain the inherent characteristics of meat products.     

Effects of cellulosic fibre on physical and rheological properties of starch,gluten and wheat flour

In this study, we report on the effects of cellulose fibres of different particle size on changes to dough water absorption and rheology; and on effects of fibre on starch and gluten, separately, at different levels of fibre incorporation (0.1–10%). Water absorption and dough‐mixing properties were affected with fibre incorporation, with 40‐μm fibre incorporation resulting in greater absorption values. Dough stickiness and extensibility were affected by cellulose fibre particle size, and decreased with increasing fibre addition. Flour or starch and fibre mixtures were evaluated using a Micro ViscoAmlyoGraph (MVAG), and the resulting gel firmness was measured using a texture analyzer. MVAG peak and final viscosities of flour samples decreased with increasing fibre content. Starch–fibre interactions followed a similar trend as flour–fibre treatments. Gluten–fibre interactions were also measured using a Gluten Peak Tester on flour–fibre and gluten–fibre mixtures. Cellulose fibre enhanced the kinetics of gluten aggregation.     

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。     

纤维素纤维赛络纺经济效益分析

为提高纤维素纤维纺纱的质量和经济效益,通过分析赛络纺工艺改进成纱强力和毛羽的特点,以竹浆纤维为例,计算了传统纺与赛络纺运行成本及赛络纺投资回收期.指出:纤维素类纤维采用赛络纺工艺的运行成本大于传统纺,但由于赛络纱质量较好、售价较高,因而可在较短的时间内实现投资回收.     

Effects of psyllium and cellulose fibres on thermal,structural, and in vitro digestion behaviour of wheat starch

The study investigated the effects of adding different types of fibre (psyllium and cellulose) on in vitro digestion behaviour of wheat starch with its thermal and structural properties. Psyllium and cellulose fibres interfered with the wheat starch differently. Psyllium fibre hindered starch gelatinisation, restricted the loss of starch crystallinity, and decreased the accessibility of enzymes to starch. In contrast, cellulose fibre had no significant effect on gelatinisation and loss of crystallinity but limited the digestive enzyme mobility. The impact of psyllium was more pronounced than cellulose on reducing starch digestibility. Rapidly digestible starch fractions of the cooked starch reduced from between 57.90 ± 0.60–69.72 ± 0.46 (% in starch) to between 28.06 ± 0.36–46.34 ± 1.10 (% in starch) and 53.23 ± 0.36–66.71 ± 0.24 (% in starch) for psyllium and cellulose fibre, respectively. This information could be helpful to design foods containing starch with reduced digestibility for a healthy diet.     

In vitro availability of calcium from sources of cellulose,methylcellulose, and psyllium

Certain types of dietary fibres may decrease the amount of dietary calcium available for absorption. The objective of this study was to determine the in vitro calcium availability from sources of cellulose, methylcellulose, and psyllium, such as cereals, fibre supplements, and purified fibres. Total dietary fibre, soluble and insoluble dietary fibre, acid detergent fibre, neutral detergent fibre, cellulose, hemicellulose, lignin, protein, uronic acid, phytate, water holding capacity, and total endogenous calcium content were determined. Results from the chemical analyses of the fibre sources varied significantly. Free endogenous calcium, at pH 3–8, was determined via gel filtration. Calcium was added to each fibre source and free exogenous calcium was determined via gel filtration at pH 1 and pH 8. The analysis of variance procedure was used to determine differences in binding capacities of the fibres. There was virtually no binding of exogenous calcium by sources of cellulose, methylcellulose, or psyllium.     

Ramie fibre: part I. Chemical composition and chemical properties. A critical review of recent developments

The monograph deals with a critical review of the recent research work and development on ramie, a long vegetable bast fibre. The review is divided into two parts. Part I discusses the progress of recent work on ramie, chemical components like fibre degumming, its effects on fibre composition, chemical constituents, i.e. hemicellulose, cellulose, non-cellulosic and mineral matters. Besides various chemical properties of native and modified fibres such as accessibility, infrared, cellulose I-V, DP, grafting, cross linking and resin finishing and dyeing etc. are dealt with.     

STANDARD SIZING AND FIT TESTING APPLIED TO WOMEN'S HOSIERY

The monograph deals with a critical review of the recent research work and development on ramie, a long vegetable bast fibre. The review is divided into two parts. Part I discusses the progress of recent work on ramie, chemical components like fibre degumming, its effects on fibre composition, chemical constituents, i.e. hemicellulose, cellulose, non-cellulosic and mineral matters. Besides various chemical properties of native and modified fibres such as accessibility, infrared, cellulose I–V, DP, grafting, cross linking and resin finishing and dyeing etc. are dealt with.