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Polyester‐Hydrophilic PEO Networks as Multifunctional Biomaterials
Author(s) -
Feng Yakai,
Zhao Haiyang,
Zhang Shifeng,
Jiao Licai,
Lu Jian,
Wang Heyun,
Guo Jintang
Publication year - 2011
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/masy.201000085
Subject(s) - photopolymer , materials science , isophorone diisocyanate , polyester , polymer , glass transition , polymerization , polymer chemistry , ethylene glycol , plga , chemical engineering , composite material , polyurethane , nanotechnology , nanoparticle , engineering
In order to improve the hydrophilic and elastic properties of polyester networks, the amorphous polymer networks of hydrophobic polyester/hydrophilic poly(ethylene glycol) dimethacrylate (PEGDMA) were prepared by UV‐photopolymerization of PEGDMA and poly[( D,L ‐lactide)‐ co ‐glycolide]tetraacrylate (PLGATA). The interpenetrating polymer networks (IPNs) based on polyesterurethane and PEGDMA were synthesized in situ by UV‐photopolymerization of PEGDMA and thermal polymerization of oligo[( D,L ‐lactide)‐ co ‐ε‐caprolactone]teraol (PCLA) or poly[( D,L ‐lactide)‐ co ‐glycolide]teraol (PLGA) with isophorone diisocyanate (IPDI). The polymer networks and IPNs are transparent soft materials, and show good shape‐memory properties. They recovered their permanent shape in 12 seconds when the environment temperature was above glass transition temperature (T g ). The strain recovery rate (R r ) and the strain fixity rate (R f ) of the polymer networks and IPNs were above 90%. The wettability, degradation rate, mechanical properties, and T g of the polymer networks and IPNs could be conveniently adjusted by changing PEGDMA content. The elastic networks are suitable for potential soft substrates with tailored mechanical properties for clinical or medical use.