سال انتشار: ۱۳۸۲

محل انتشار: هشتمین کنگره ملی مهندسی شیمی ایران

تعداد صفحات: ۱۱

نویسنده(ها):

Ghafelebashi Zarand – Polymer Engng. Dept. Amir-Kabir University of Technology, Tehran, Iran
Pourmahdian – Polymer Engng. Dept. Amir-Kabir University of Technology, Tehran, Iran
Afshar Taromi – Polymer Engng. Dept. Amir-Kabir University of Technology, Tehran, Iran
Jabbari –

چکیده:

Emulsion polymerization of styrene/butadiene is simulated using Monte Carlo method. The important assumptions are: Interval I is finished when all micelles are disappeared, during the polymerization period there isn’t variation considered for their reaction constants. In this research bimodal molecular weight distribution was obtained, which is an evidence of tri-functional branching and tetra-functional crosslinking. The results
show increasing in the degree of conversion causes to shift molecular weight distribution toward the higher values. Increasing in emulsifier concentration causes to increase the surface area under the second peak in molecular weight distribution. The statistical approach showed the results are in agreement with the Smith-Ewart theory for insoluble monomers in continuous media.