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Citation: Liang Liang, Ying Shengkang. MOLECULAR WEIGHT DISTR IBUTION OF POLYALPHA METHYLSTYRENE[J]. Chinese Journal of Applied Chemistry, ;1992, 9(1): 87-88. shu

MOLECULAR WEIGHT DISTR IBUTION OF POLYALPHA METHYLSTYRENE

Liang Liang ^, ,
Ying Shengkang

1.
Institute of Materials Science and Engineering, East China University of Chemical Technology, Shanghai 200237

Corresponding author: Liang Liang,
Received Date: 20 November 1990
Available Online: 1 April 1991

The molecular weight distribution of polyalpha-methylstyrene prepared by anionic polymerization, with n-butyllithium as initiator was investigated. The influences of ether additives, ratios of ether to initiator and polymerization temperature on the molecular weight distribution of polymers were studied.Thereactivity of reactive species and rate of interchange between the reactive species were considered as the main factors effecting the molecular weight distribution of the polymer.With increasing polymerization temperature and by using more strong and concentrated ether additive the molecular weight distribution of the polymer became more narrow.
- anionic polymerization,
- alpha-methylstyrene,
- molecular weight distribution
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