Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5161284 | Journal of Molecular Structure | 2017 | 9 Pages |
Abstract
The aim of this study was to develop the efficient and versatile method for the synthesis of block copolymers consists by cationic polymerization vinylidene chloride (VDC) and alpha-methylstyrene (alpha-MS) in the presence of a natural Algerian montmorillonite clay modified by 0.05-0.35Â MÂ H2SO4 (Algerian MMT-H+). It was found that H2SO4 concentration allows controlling the chemical composition, the porous structure of the acid-activated clays and their catalytic performance. The maximal yield of polymer is observed in the presence of Algerian MMT modified by 0.25Â MÂ H2SO4. Effects of VDC/MS molar ration, catalyst concentration, reaction time, reaction temperature and polarity medium on yield and molecular weight of polymer were revealed in the presence of the most active sample.
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Authors
Moulkheir Ayat, Mohamed Belbachir, Abdelkader Rahmouni,