Preparation of poly(vinyl pivalate) microspheres by dispersion polymerization in an ionic liquid and saponification for the preparation of poly(vinyl alcohol) with high syndiotacticity

Title
Preparation of poly(vinyl pivalate) microspheres by dispersion polymerization in an ionic liquid and saponification for the preparation of poly(vinyl alcohol) with high syndiotacticity
Author(s)
심재진웬방호아[웬방호아]할도리유바라즈팜쿠앙롱[팜쿠앙롱]노석균류원석
Keywords
FREE-RADICAL POLYMERIZATION; SUPERCRITICAL CARBON-DIOXIDE; METHYL-METHACRYLATE; VINYL PIVALATE; SUSPENSION POLYMERIZATION; CATIONIC-POLYMERIZATION; PARTICLE FORMATION; BLOCK-COPOLYMERS; TEMPERATURE; STYRENE
Issue Date
201011
Publisher
PERGAMON-ELSEVIER SCIENCE LTD
Citation
EUROPEAN POLYMER JOURNAL, v.46, no.11, pp.2190 - 2198
Abstract
We report here a successful free-radical dispersion polymerization of vinyl pivalate (VPi) in an ionic liquid 1-butyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide ([bmim]-[TFSI]) using poly(vinyl pyrrolidone) (PVP) as a stabilizer Morphological analysis by FESEM revealed that poly(vinyl pivalate) (PVPi) obtained from dispersion polymerizations were in the form of spherical particles Micron-sized PVPi particles with a number-average molecular weight (M-n) of 166 400 g/mol could be obtained using 5% stabilizer (w/w to monomer) at 65 degrees C for 20 h The effects of varying concentration of stabilizer initiator and monomer upon polymer yield molecular weight and morphology of PVPi were also investigated Analogous polymerizations in dimethyl sulfoxide (DMSO) and bulk served as references In addition the preparation of poly(vinyl alcohol) (PVA) by saponification of the resultant PVPi was described (C) 2010 Elsevier Ltd All rights reserved
URI
http://hdl.handle.net/YU.REPOSITORY/23404http://dx.doi.org/10.1016/j.eurpolymj.2010.08.004
ISSN
0014-3057
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공과대학 > 화학공학부 > Articles
총장실 > 총장실 > Articles
섬유패션학부 > 섬유패션학부 > Articles
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