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Synthesis of poly(tetrafluoroethylene)/poly(butadiene) core-shell particles and their graft copolymerization

✍ Scribed by Motoki Okaniwa

Publisher
John Wiley and Sons
Year
1998
Tongue
English
Weight
221 KB
Volume
68
Category
Article
ISSN
0021-8995

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✦ Synopsis

This article describes how to convert the unreactive surface of poly(tetrafluoroethylene) (PTFE) into poly(styrene-co-acrylonitrile) (SAN). Composite particles with a crosslinked poly(butadiene) (PB) shell covered over a PTFE core were prepared by an emulsifier-free seeded emulsion polymerization of butadiene in the presence of PTFE latex. It was found that the increase in the PB crosslink density resulted in depressing the formation of PB secondary particles. Then, styrene and acrylonitrile were able to graft onto PB shell in high efficiency of 70%. SAN-modified PTFE/PB coreshell particles could eventually be dispersed homogeneously in a SAN matrix. ᭧ 1998

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