天然植物鞣料中鞣质的分析测定

本文选择油松树，白桦树，漆树，柳树，马桑，桃为植物鞣料，研究提取，分离和测定鞣质，非鞣质，水溶物的方法，用过量标准皮粉吸收的和高效液相色谱法对同一植物鞣焙鞣质作定量分析。     

聚己内酰胺/醋酸纤维素合金膜材料的制备及性能表征

采用溶液共混和液-固相转变法制备聚己内酰胺/醋酸纤维素的共混物(PA-6/CA)作为高效液相色谱(HPLC)柱填料。以小分子量化合物为探针分子,用HPLC法测定其界面性能,并研究其共混物的相容性、热稳定性。实验结果表明,PA-6与CA有很好的相容性,且PA-6/CA的热稳定性比纯CA有所提高;PA-6/CA(50∶50)合金膜材料对不离解极性有机物分离效果最佳,适合作脱盐膜材料;CA可有效改善PA-6的亲水性。     

Determination of Interfacial Parameters of Copolyamide Membrane Material by HPLC

The High Performance Liquid Chromatography (HPLC) method is employed with copolyamide-170 (PA-170) membrane material as packing to determine the retention volume (V?R) and equilibrium distribution coefficient (K?A) of both inorganic solutes and organic solutes. Based on the experimental data, the interfacial parameters of the packing material are obtained.     

共聚尼龙与乙基纤维素共混物的制备及性能表征

采用溶液共混合液-固相转变法制备出共聚尼龙与乙基纤维素共混物(PA-170/EC)。以黏度法、折光指数法和热重分析法研究了PA-170与EC的相容性和热稳定性。用高效液相色谱法表征了PA-170/EC共混物的界面性能。实验结果表明PA-170和EC有较好的相容性,且EC可改善PA-170界面亲水性和吸附性;PA-170/EC对不离解的极性有机物的分离效率优于纯PA-170和EC。     

Interfacial Properties of Ethyl Cellulose/Cellulose Acetate Blends by HPLC

The high performance liquid chromatography method (HPLC) with ethyl cellulose/cellulose acetate (EC/CA) blends and EC as column packing material, and small molecular weight compound as probe molecules was employed to measure the retention volume (VR) and equilibrium distribution coefficient (K) of both inorganic and organic solutes. The interfacial separation properties of EC/CA blends were characterized by the HPLC data. The effects of the blends on the interfacial adsorption properties, hydrophilicity, affinity, polar and non-polar parameters of EC membrane materials were studied subsequently. The research results indicate that the interfacial adsorption properties and hydrophilicity of EC have been improved by solution blending with CA. The alloys are superior to EC in the separation efficiency for non-dissociable polar organic solute. The EC/CA alloy (80:20, w) is suitable for desalting and desaccharifying.     

浅谈含涤产品的工艺设计

我厂从62年开始试制毛涤产品,至今已有20余年的历史。通过生产实践,逐步摸索出了生产含涤产品的一些经验。目前除了生产不同比例的毛涤纶以外,还生产了羊绒毛涤纶、毛涤花呢、毛涤粘花呢以及粘涤纶和腈涤纶等。 随着品种花色的增加,产品质量的不断提高,国内外市场也随之扩大,除     

浅谈精纺匹染产品的深入开发

纺织工业部和国家人事部委托北京纺织工业总公司举办了全国毛纺织产品开发与质量控制高级研修班,学员来自全国九个省市二十个毛纺织企业的高、中级技术人员,围绕毛纺织产品开发和质量控制这个专题,开展了深入的研讨和交流,并写出了内容丰富的论文。本刊选登了以下8篇论文,供毛纺织行业的读者阅读、参考.     

HPLC法测定新鲜草莓中水溶性维生素

采用反相高效液相色谱法测定草莓中水溶性维生素C、B1、B2和烟酸。四种维生素在ODS－5μm反相色谱柱上分离,pH5．66磷酸缓冲液-甲醇（75：25V／V）为流动相洗脱,流速为1ml／min,UV254nm,9min内实现良好分离,其回收率为107.7％~96．1％,变异系数为1.56％~0.912％。样品提取液（经0．45μm滤膜过滤后）可直接上机进样。