丙烯酰胺与滨粉的超浓W／O乳液及“多面液胞”内的接枝聚合  

A Concentrated W/O Emulsion and the Graft Polymerization Within "Polyhedral Cells" of Acrylamide with Starch

作　　者：杨巍[1] 崔丹[1] 张杨 张连生[1] 王玉芹[1] 张晓楠 

机构地区：[1]黑龙江大学化学系,黑龙江商学院石油工程系

出　　处：《黑龙江大学自然科学学报》1996年第4期102-106,共5页Journal of Natural Science of Heilongjiang University

基　　金：黑龙江省八五及九五重大科研项目

摘　　要：使用Ｓｐａｎ类乳化剂和ＩＰＳ类连续相，制备了以ＡＭ和ＳＴ水溶液为分散相、相体积分数超过临界体积分数的超浓Ｗ／Ｏ乳液，研究了乳液的稳定行为及聚合特征。得出当水相体积分数超过７４％的临界体积分数后，分散相液滴已变形成由连续相油膜分隔的“多面液胞”，因此出现了高分散相下的超常稳定行为。聚合实质是“液胞”中的聚合，由于。液胞”被油膜固定而不能自由流动及各“液胞”中的单体极少互相迁移，使之成为一种全新的聚合过程，不仅继承了乳液聚合速率快、分子量大、易散热的特点，而且还具有固体份高、设备利用率大、油耗低、产品稳定的优点，有极好的工业化前景。Using SPAN as emulsfier and IPS as the continuous phase, a series of concentratedW/O emulsion d acryamide (AM) with starch (ST) were developed.The behavior of the emulsions, in which the ratios of the aqueous dispersed phase comprised by the solutions of AM and STexceed the critical phase ratios, were studied, so that Fd=0.85 the 'polyhedral Cell apopred asthe dispersed Phase. the act Polymerization d AM and ST in the emulsion, in actual fact,achieved within the 'Polyhedral cells'. Hence most droplets the dispersed phase are present Pas .'polyhedral cells', separated and fixed by oil fixed of the phase. Free flow andintermigration of the aq. AM and ST in the 'Cell' is Prevented. crferring characterastics greatly differ ent from there d Ordinary W/O emulsion polymerization processes.

关 键 词：W/O乳液 丙烯酰胺 接枝聚合 乳液聚合 淀粉 

分 类 号：O633.22[理学—高分子化学]