Dispersion polymerization of vinylidene fluoride in supercritical carbon dioxide

被引:31
|
作者
Mueller, Philipp A.
Storti, Giuseppe
Morbidelli, Massimo [1 ]
Costa, Ivano
Galia, Alessandro
Scialdone, Onofrio
Filardo, Giuseppe
机构
[1] Swiss Fed Inst Technol, ETHZ Inst Chem & Bioingenieurwissensch, HCI, ETH Honggerberg, CH-8093 Zurich, Switzerland
[2] Univ Palermo, Dipartimento Ingn Chim Proc & Mat, I-90128 Palermo, Italy
关键词
D O I
10.1021/ma060981l
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
The dispersion polymerization of vinylidene fluoride in supercritical carbon dioxide is investigated using two ammonium carboxylate perfluoropolyether stabilizers of different molecular weights. Under suitable operating conditions a polymer made of well-dispersed spherical particles has been obtained up to relatively high conversion. The experimental data of polymerization rate and molecular weight distribution are in good agreement with the predictions of a model previously developed. Such an agreement supports the conclusion that the polymerization kinetics is dominated by the interphase transport of the active radicals between the continuous phase and the polymer particles.
引用
收藏
页码:6483 / 6488
页数:6
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