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Synthesis of cross‐linked polymer microspheres in supercritical carbon dioxide
Author(s) -
Cooper Andrew I.,
Hems William P.,
Holmes Andrew B.
Publication year - 1998
Publication title -
macromolecular rapid communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 154
eISSN - 1521-3927
pISSN - 1022-1336
DOI - 10.1002/(sici)1521-3927(19980701)19:7<353::aid-marc353>3.0.co;2-g
Subject(s) - supercritical carbon dioxide , microsphere , polymer , supercritical fluid , carbon dioxide , materials science , chemical engineering , polymer science , polymer chemistry , chemistry , organic chemistry , composite material , engineering
Herein we report the synthesis of highly cross‐linked polymers based on divinylbenzene by heterogeneous polymerization in supercritical CO 2 (scCO 2 ). The polymers were isolated in the form of discrete microspheres (diameter = 1.5–5 μm) in good yields (≥90%), in the absence of any stabilizers. In the presence of a CO 2 ‐soluble polymeric stabilizer, much smaller particles (diameter <0.5 μm) were formed in high yields (≥95%) by emulsion polymerization in scCO 2 .