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Synthesis and characterization of poly(butadiene-b-sulphone) by block-copolycondensation—II. Synthesis from α,ω-dicarboxylic oligobutadienes and α,ω-diepoxy oligosulphones

✍ Scribed by A. Pourdjavadi; P.J. Madec; E. Maréchal

Publisher
Elsevier Science
Year
1984
Tongue
English
Weight
526 KB
Volume
20
Category
Article
ISSN
0014-3057

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✦ Synopsis

The synthesis of poly(butadiene-b-sulphone) by two methods was described in part I (Eur. Polym. J. 20, 305 [1]). The results obtained by reaction of ~,c0-dicarboxylic oligobutadiene with ct,co-diepoxy oligosulphones are reported here. The kinetics of the reaction are studied on models; reaction orders, rate constants, activation parameters are determined. Their values fit Madec's kinetic pattern and are close to those obtained by Cr6peau [6] for the grafting of hydroxybenzoic acid onto a copolymer bearing epoxy side-groups. Contribution of the side-reaction [2] is quantified. Block-copolycondensation of the reactive oligomers are carried out both in solution and in the melt. Contribution of the side-reaction is higher in the melt than in solution, but in both cases block-copolymers are obtained and characterized by GPC.

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