二醋酸纤维素与聚乙二醇接枝共聚物的制备与表征  

Preparation and Characterization of Cellulose Diacetate Polyethylene Glycol Graft Copolymer

作　　者：游天彪[1] 谭英[1] 唐青[1] 胡艾希[1] 

机构地区：[1]湖南大学化学化工学院,长沙410082

出　　处：《应用化学》2006年第3期346-348,共3页Chinese Journal of Applied Chemistry

摘　　要：以1,6-己二异氰酸酯(HD I)作交联剂,聚乙二醇(PEG)与二醋酸纤维素(CDA)接枝得二醋酸纤维素-聚乙二醇接枝共聚物。用正交试验法L27(133)研究了PEG分子量、CDA与PEG的配比、HD I的用量、催化剂的用量和反应时间对接枝反应的影响。接枝反应最佳工艺条件为:PEG分子量200,n[NCO]∶n[OH]=4∶4,m(PEG)∶m(CDA)=5.0∶3.0,催化剂质量分数为0.10%,反应时间为1.5 h。最佳工艺条件下制得的二醋酸纤维素与聚乙二醇接枝共聚物接枝率为253.3%。产物结构经1H NMR、13C NMR、FT-IR测试技术得到确证。Cellulose diacetate（CDA） was grafted with polyethylene glycol（PEG） by using 1,6-hexamethylene diisocyanate（HDI）. The effects of molecular weight of PEG, the ratio of PEG to CDA, HDI amount, catalyst amount and reaction time on the grafting reaction were studied. The optimal condition were determined by means of orthogonal experiments, that is, n（NCO） ：n（OH） was 4：4 ; m（PEG） ： m（CDA） was 5.0：3.0 ; the mass fraction of catalyst was 0. 10%, reaction time was 1.5 h and molecular weight of PEG was 200. The graft rate of CDA-g-PEG prepared under the optimal conditions was 253.3%. The graft copolymer was characterized by means of FT-IR,^1H NMR, and ^13C NMR techniques.

关 键 词：二醋酸纤维素-聚乙二醇 接枝共聚物 己二异氰酸酯 制备 表征 

分 类 号：O636.1[理学—高分子化学]