摘要
研究淀粉与丙烯酰胺在 60 Coγ射线引发下的接枝共聚反应规律和反应机理 ,由实验结果得出了辐照时间与接枝聚合率的关系 ,辐照剂量率、单体浓度、淀粉浓度和辐照温度对接枝共聚反应速率的影响 ,并由此关联出接枝反应速率表达式 :Rp=k[I]1/ 2 [AM][AGU]1/ 2。对接枝共聚反应机理进行了初步探讨 。
The mechanism of starch/acrylamide graft copolymerization of γ rays from a cobalt 60( 60 Co) source as initiator was studied. The effect of radiative time with polymer and the relationships between grafting rate and radiation dose rate, monomer concentration,radiative temperature and starch concentration were obtained, based on which the equation for the graft copolymerization was derived: R p= k 1/2 1/2 . On the other hand, the reaction course was investigated. These results show that the equation by theory for the graft copolymerization is same with that by experiment.
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
2001年第6期64-66,70,共4页
Polymer Materials Science & Engineering
基金
云南省教委青年教师科研基金资助项目 (16 9942 0 15 )
关键词
接枝共聚反应
辐照
丙烯酰胺
淀粉
graft copolymerization
radiation
acrylamide
starch
