viscosity average molecular weight

research on polyacrylamide of ultrahigh viscosity average molecular weight

超高相对分子质量聚丙烯酰胺的研究

Degradation behavior of macromolecule polymer coated material is the process that the rupture of chemical bond of main chain and forming molecular fractionlet. Ubbelohde viscosity method was put forward for measuring viscosity-average molecular weight of copolymer.

高分子聚合物包膜材料降解过程就是主链上化学键的断裂并形成低相对分子质量碎片的过程，采用乌氏粘度计法测定淀粉/聚乙烯醇肥料包膜材料的降解程度。

The content of phosphorus in the polymer is less than 4%, viscosity-average molecular weight is 1.7 × 104.The IR spectrum characterizes the polymer contains sulpho, carboxyl and phosphono in its molecular structure.

元素分析表明共聚物中磷元素质量分数<4%，黏均相对分子质量为1.7×104，红外光谱分析证明聚合产物分子结构中含有羧酸基、磺酸基和膦酰基等官能团。

As a result, the maximum viscosity average molecular weight of PLLA is 6.17 × 104, with a narrow molecular-weight distribution, high production rate and light color.

此时聚乳酸的粘均分子量为6.17×104，分子量分布1.37，且产率较高，色泽较浅。

the intrinsic viscosity of chlorinated polypropylene-toluene and the viscosity average molecular weight of chlorinated polypropylene

氯化聚丙烯甲苯溶液的特性黏数及其黏均分子量

influence of radiation intensity and monomer concentration on its viscosity average molecular weight is alsoobserved.

结果表明，随辐射强度及单体浓度的增大，均聚物的分子量增大。

the effects of polymerization condition on viscosity-average molecular weight and stability of polymers were studied.

考察了合成工艺条件对聚合物相对分子量的影响。

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。

determination of viscosity - average molecular weight of foaming polystyrene

发泡性聚苯乙烯粘度分子量的测定

Based on measurements of mechanical properties and viscosity average molecular weight, and analyses of hydroperoxide concentration ( [ POOH]) and crystallinity of the aged samples, their degradation was discussed.

基于降解膜力学性能和粘均分子量的测量以及对过氧化氢物浓度（[POOH]）和结晶度的分析，探讨了铁离了对膜在堆肥温度下降解性能影响。