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Synthesis of block copolymers by heterogeneously initiated emulsion polymerization
Author(s) -
Chrástová V.,
Citovický P.,
Pristačová J.
Publication year - 1990
Publication title -
makromolekulare chemie. macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 0258-0322
DOI - 10.1002/masy.19900310119
Subject(s) - copolymer , comonomer , polymer chemistry , styrene , polymerization , materials science , methyl methacrylate , acrylonitrile , maleic anhydride , emulsion polymerization , tacticity , polymer , composite material
The contribution refers to the possibility of using emulsion polymerization of styrene, initiated by a heterogeneous initiator Chydroperoxide of isotactic powdered polypropylene) in the presence of a complex type activator, for the synthesis of block copolymers. Vinylmonomers with various water‐solutibility, i.e. methyl methacrylate (MMA), acrylonitrile (AN) and maleic anhydride (MA), were utilized as comonomers of styrene. It was found that at the used conditions, the composition of block copolymers PS‐b‐P(S/AN) and PS‐b‐PCS/MA) can be varied by the time of polymerization of the first or second comonomer. The block copolymers were characterized by their molecular weight, and their thermal stability was also investigated.