Premium
Dynamic‐mechanical behavior of hydrophobic–hydrophilic interpenetrating copolymer networks
Author(s) -
Araújo N.,
Gomes D.,
Ribelles J.L. Gómez,
Pradas M. Monleón,
Mano J.F.
Publication year - 2006
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.20564
Subject(s) - copolymer , materials science , methacrylate , interpenetrating polymer network , 2 hydroxyethyl methacrylate , acrylate , polymer chemistry , methyl methacrylate , butyl acrylate , polymer , polymerization , radical polymerization , absorption of water , composite material
Abstract Sequential interpenetrating polymer networks (IPNs) were prepared by free‐radical polymerization. One of the components of the IPN was a poly(butyl acrylate) (PBA) network, and the other one was a poly(methyl methacrylate‐ co ‐hydroxyethyl methacrylate) copolymer network. Dynamic‐mechanical experiments show that the IPNs are phase separated: two main α relaxations occur in all samples, the low temperature one corresponding to the PBA network and that appearing at higher temperature due to the copolymer network. The latter shows a shape analogous to a pure poly(hydroxyethyl methacrylate) (PHEMA) network independently of the copolymer composition. The influence of water absorption on the dynamic‐mechanical spectrum shows that only a small amount of water reaches the butyl acrylate segments. The dependence of the mechanical behavior of the poly(methyl methacrylate‐ co ‐hydroxyethyl methacrylate) copolymer networks with the copolymer composition has been also analyzed. POLYM. ENG. SCI., 46:930–937, 2006. © 2006 Society of Plastics Engineers