Synthesis of Gel-Star Polymer by Two Steps

Abstract

Abstract: In this paper, the styrene-isoprene gel-star block copolyrqer with different branching degrees was synthesized by using gel uncleus with pendant vinyl groups to be a crossolinking agent. It was found that divinylbenzene could control the number of vinyl groups which were measured by UV spec-trometry, and chain transfer agent had a serious effect on the molecular weight of gel nucleus. Following crosslinking reaction by GPC, we revealed that increasing the branching degrees was slow step. In order to get higher branching degree, we must consider the'space hinderance and being wrapped of vinyl groups.

Key words: Star polymer, Styrene, Isoprene

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Yin Rui, Shen Jiacong . Synthesis of Gel-Star Polymer by Two Steps[J]. Chem. J. Chinese Universities, 1990, 11(9): 1007.

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Synthesis of Gel-Star Polymer by Two Steps

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