Analysis of unsaturated polyester-polyurethane interpenetrating polymer networks II: Phase separation behavior

1993 ◽  
Vol 33 (10) ◽  
pp. 598-606 ◽  
Author(s):  
Sun Suk Lee ◽  
Sung Chul Kim
Keyword(s):  
Phase Separation ◽  
Unsaturated Polyester ◽  
Polymer Networks ◽  
Interpenetrating Polymer Networks ◽  
Phase Separation Behavior ◽  
Separation Behavior

Solvents Effect on the Structure and Properties of Thermosensitive Polyurethane/Poly(N-Isopropylacrylamide) Semi-Interpenetrating Polymer Networks

2010 ◽  
Vol 129-131 ◽  
pp. 1166-1170 ◽  
Author(s):  
Hai Ning Lv ◽  
Cheng Qian ◽  
Yuan Xue ◽  
Zai Sheng Cai
Keyword(s):  
Thermoplastic Polyurethane ◽  
Polymer Networks ◽  
Crosslinking Agent ◽  
Interpenetrating Polymer Networks ◽  
Solution Temperature ◽  
Critical Solution Temperature ◽  
Volume Transition ◽  
Surface Contact Angle ◽  
Phase Separation Behavior ◽  
Separation Behavior

poly(N-isopropylacrylamide) (PNIPPAm) is a thermally sensitive polymeric material which exhibits large volume transition at temperatures around its lower critical solution temperature (LCST). To get a thermosensitive semi-Interpenetrating Polymer Networks(semi-IPNs), N- isopropylacrylamide (NIPPAm) was dispersed and synthesized with different crosslinking agent amount in thermoplastic polyurethane(TPU) solution. The resulting films were characterized in terms of swelling ration, surface contact angle, and scanning electron micrograph (SEM). The results showed that filming medium has great affect on the structure and swelling of PU/PNIPPAm composite film and the amount of crosslinking agent influents the miscibility of PU and PNIPPAm. Ethanol as filming medium makes the phase separation behavior of PNIPPAm insignificant in the films.

Phase separation in the polyurethane/poly(2-hydroxyethyl methacrylate) semi-interpenetrating polymer networks synthesized by different ways

2008 ◽  
Vol 48 (3) ◽  
pp. 588-597 ◽  
Author(s):  
Lyudmyla V. Karabanova ◽  
Gisele Boiteux ◽  
Gerard Seytre ◽  
Isabelle Stevenson ◽  
Andrew W. Lloyd ◽  
...  
Keyword(s):  
Phase Separation ◽  
Polymer Networks ◽  
Interpenetrating Polymer Networks ◽  
Hydroxyethyl Methacrylate

Phase Separation Behavior of Fusidic Acid and Rifampicin in PLGA Microspheres

2012 ◽  
Vol 9 (5) ◽  
pp. 1489-1501 ◽  
Author(s):  
Samuel E. Gilchrist ◽  
Deborah L. Rickard ◽  
Kevin Letchford ◽  
David Needham ◽  
Helen M. Burt
Keyword(s):  
Phase Separation ◽  
Fusidic Acid ◽  
Plga Microspheres ◽  
Phase Separation Behavior ◽  
Separation Behavior
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