Modeling of seeded semibatch emulsion polymerization of n-BA

被引:111
作者
Plessis, C
Arzamendi, G
Leiza, JR
Schoonbrood, HAS
Charmot, D
Asua, JM
机构
[1] Univ Basque Country, Inst Polymer Mat, POLYMAT, E-20080 San Sebastian, Spain
[2] Univ Basque Country, Fac Ciencias Quim, Dept Quim Aplicada, Grp Ingn Quim, E-20080 San Sebastian, Spain
[3] Univ Publ Navarra, Dept Quim Aplicada, Pamplona 31006, Spain
[4] Rhodia, Ctr Rech Aubervilliers, F-93308 Aubervilliers, France
关键词
D O I
10.1021/ie000427e
中图分类号
TQ [化学工业];
学科分类号
0817 ;
摘要
A mathematical model for the computation of kinetics, branching frequency, sol molecular weight distribution, and gel fraction for the seeded semicontinuous emulsion polymerization of n-BA is presented. The model incorporates mechanistic features that have been found to play an important role in the polymerization of n-BA, such as the intramolecular transfer to polymer, so-called backbiting, and the low reactivity of the tertiary radicals resulting from such a reaction. Model parameters for which values are not available in the literature were obtained by fitting the model predictions to the kinetic data and structural properties of the polymer (fraction of gel, sol molecular weight distribution, and level of branches) gathered in seeded semicontinuous emulsion polymerizations of n-BA carried out at 75 degreesC with potassium persulfate as the initiator. The model fits all of these experimental data quite well.
引用
收藏
页码:3883 / 3894
页数:12
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