Polymerization of vinyl pivalate in supercritical carbon dioxide and the saponification for the preparation of syndiotacticity-rich poly(vinyl alcohol)

Title
Polymerization of vinyl pivalate in supercritical carbon dioxide and the saponification for the preparation of syndiotacticity-rich poly(vinyl alcohol)
Author(s)
심재진팜쿠앙롱웬방호아할도리유바라즈[할도리유바라즈]
Keywords
TEMPERATURE SUSPENSION POLYMERIZATION; TERTIARY BUTYL ALCOHOL; DISPERSION POLYMERIZATION; METHYL-METHACRYLATE; HIGH-YIELD; MICROFIBRILS; COPOLYMERIZATION; AZOINITIATOR; STYRENE; FIBERS
Issue Date
201305
Publisher
KOREAN INSTITUTE CHEMICAL ENGINEERS
Citation
KOREAN JOURNAL OF CHEMICAL ENGINEERING, v.30, no.5, pp.1153 - 1161
Abstract
This paper reports a successful free-radical dispersion polymerization of vinyl pivalate in supercritical carbon dioxide using poly(1H,1H-dihydroperfluorooctyl acrylate) and dimethylsiloxane-g-pyrrolidone carboxylic acid (Monasil PCA) as stabilizers. In both cases, no spherical polymer particles were obtained, which might be due to the high solubility of poly(vinyl pivalate) (PVPi) in supercritical carbon dioxide. The effects of the reaction time, pressure, temperature, monomer loading, stabilizer concentration and initiator concentration on the polymer yield and molecular weight of PVPi were also investigated. In addition, the formation of poly(vinyl alcohol) via saponification of the resulting PVPi is described.
URI
http://hdl.handle.net/YU.REPOSITORY/25928http://dx.doi.org/10.1007/s11814-013-0019-6
ISSN
0256-1115
Appears in Collections:
공과대학 > 화학공학부 > Articles
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