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Effects of experimental variables on the synthesis of porous matrices
Author(s) -
Gomez C. G.,
Alvarez C. I.,
Strumia M. C.,
Rivas B. L.,
Reyes P.
Publication year - 2000
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 - 10.1002/1097-4628(20010131)79:5<920::aid-app160>3.0.co;2-l
Subject(s) - ethylene glycol dimethacrylate , swelling , suspension polymerization , polymer chemistry , materials science , chemical engineering , copolymer , methacrylate , acrylic acid , polymerization , sorption , ethylene glycol , scanning electron microscope , porosity , solution polymerization , methacrylic acid , chemistry , composite material , polymer , organic chemistry , adsorption , engineering
Macroporous beads, poly(ethylene glycol dimethacrylate‐ co ‐acrylic acid) [poly(EGDMA‐ co ‐AAc)], and poly(ethylene glycol dimethacrylate‐ co ‐hydroxyethyl methacrylate) [poly(EGDMA‐ co ‐HEMA)] were prepared by the suspension polymerization technique in the presence of a porogen agent. Different experimental conditions such as amount of initiator, porogen type, and temperature were studied to optimize the polymerization systems. These hydrophilic copolymers were characterized by IR spectroscopy, scanning electron microscopy, specific surface area, and swelling in water. A new parameter, H, defined as the ratio between the equilibrium weight swelling ratio ( q w ) and equilibrium volume swelling ratio ( q v ), allowed to select the reaction conditions from which matrices with high capacity of water sorption and low stretching degree were reached. © 2000 John Wiley & Sons, Inc. J Appl Polym Sci 79: 920–927, 2001