کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1402083 | 984743 | 2010 | 10 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Kinetic modeling of two-step RAFT process for the production of novel fluorosilicone triblock copolymers Kinetic modeling of two-step RAFT process for the production of novel fluorosilicone triblock copolymers](/preview/png/1402083.png)
Well-defined poly(dimethylsiloxane)-b-poly(2,2,3,3,4,4,4-heptafluorobutylmethacryl-ate-b-poly(styrene) (PDMS-b-PHFBMA-b-PS) triblock copolymers were prepared by two-step reversible addition–fragmentation chain transfer (RAFT) polymerization. A comprehensive mathematical model for the two-step RAFT polymerization in a batch reactor was presented using the method of moments. The model described molecular weight, monomer conversion and polydispersity index as a function of polymerization time. Good agreements in the polymerization kinetics were achieved for fitting the kinetic profiles with the suggested model. In addition, the model was used to predict the effects of initiator concentration, chain transfer agent concentration and monomer concentration on the two-step RAFT polymerization kinetics. The simulated results showed that for the two-step RAFT polymerizations, the effects initiator concentration, chain transfer agent concentration and monomer concentration are identical and the influence degrees are different yet.
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Journal: European Polymer Journal - Volume 46, Issue 11, November 2010, Pages 2164–2173