聚氧乙烷的分级和分子量测定的研究  

STUDY OF FRACTIONATION AND MOLECULAR WEIGHT MEASUREMENT OF POLYETHYLENE OXIDE

作　　者：陈贤苓 庞嬿婉[2] 

机构地区：[1]上海建材学院 [2]复旦大学

出　　处：《上海建材学院学报》1993年第1期86-91,共6页

摘　　要：本文对具有宽分子量分布的高分子量聚氧乙烷的逐步沉淀分级进行了研究,有效地得到了具有不同分子量大小的较窄分子量分布的四个级分,所得级分的分子量分布指数在1.7～2.3之间,并研究了用凝胶色谱方法对各级分的分子量和分子量分布的测定。In this thesis, the fractional precipitation of polyethylene oxide with wide molecular weight distribution has been studied. The four fractions of different molecular weights and narrow molecular weight distribution were obtained with polydispersity from 1.7 to 2.3. We have also studied the measurement of molecular weights and molecular weight distribution of four fractions by GPC.

关 键 词：沉淀分级 聚氧乙烷 分子量 测定 

分 类 号：O631.61[理学—高分子化学]