the effects of concentration, reaction temperature and reaction time on the degree of deacetylation and viscosity average molecular weight were investigated.
本文采用粘度法测出了苎麻纤维的粘均分子量,分析探讨了不同整理液浓度、焙烘温度与纤维分子量之间的关系。
according to the relations of polymerization velocity and viscosity average molecular weight versus conversion, the mechanism of d4 anionic ring-opening polymerization in miniemulsion was developed.
通过聚合速率和粘均分子量随转化率的变化关系提出了d_4阴离子开环细乳液聚合机理;
the viscosity average molecular weighs of several different cpps were determined by dilute solution viscometry and the intrinsic viscosity was related to the viscosity of industry concentration.
用稀溶液粘度法测定了几种不同氯化聚丙烯粘均分子量,并且将稀溶液测定的特性粘数与一般工业使用浓度的粘度联系起来。
the degree of deacetylation of chitosan prepared by the optimum condition is 88.53%, the viscosity average molecular mass is 9048. the experimental result mainly accorded the prospective desire.
最佳制备条件得到的壳聚糖脱乙酰度为88.53%,黏均分子质量为9048。实验结果基本符合预期的要求。
the polymer with a viscosity average molecular weight beyond 200 000 was fairly reproducible by optimizing the polymerization conditions.
优化聚合条件可以获得粘均分子量大于200000的聚丙交酯材料,聚合结果具有良好的重复性。