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Preparation of polymer microspheres in supercritical carbon dioxide and their evaluation as cold‐flow improvers in diesel
Author(s) -
Zhang Donghui,
Cui Leyu,
Wei Xiangpan,
Zhang Shubiao
Publication year - 2010
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.31456
Subject(s) - supercritical carbon dioxide , supercritical fluid , copolymer , materials science , methacrylic acid , styrene , chemical engineering , polymer , microsphere , particle size , diesel fuel , scanning electron microscope , precipitation , particle (ecology) , carbon dioxide , polymer chemistry , composite material , chemistry , organic chemistry , physics , oceanography , geology , meteorology , engineering
Polymeric microspheres were synthesized by the precipitation copolymerization of methacrylic acid and styrene in supercritical carbon dioxide. Scanning electron microscopy showed that the products were spherical microparticles. The mean diameter of the particles was 0.2–2 μm. The synthesis conditions affecting the particle size and morphology were examined in detail. The well‐distributed copolymer microspheres were applied as low‐temperature improvers for diesel. The results showed excellent performance for high‐paraffin diesel at low temperatures. © 2010 Wiley Periodicals, Inc. J Appl Polym Sci, 2010