Thermal characterizations of semi‐interpenetrating polymer networks composed of poly(ethylene oxide) and poly( N ‐isopropylacrylamide) | Zendy

Kim Seon Jeong | Zendy; Lee Chang Kee | Zendy; Lee Young Moo | Zendy; Lee Kyu Back | Zendy; Park Yong Doo | Zendy; Kim Sun I. | Zendy

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Thermal characterizations of semi‐interpenetrating polymer networks composed of poly(ethylene oxide) and poly( N ‐isopropylacrylamide)

Author(s) -

Kim Seon Jeong,

Lee Chang Kee,

Lee Young Moo,

Lee Kyu Back,

Park Yong Doo,

Kim Sun I.

Publication year - 2003

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/app.13160

Subject(s) - thermogravimetric analysis , differential scanning calorimetry , materials science , poly(n isopropylacrylamide) , ethylene oxide , polymer chemistry , polymer , thermal decomposition , radical polymerization , lower critical solution temperature , interpenetrating polymer network , oxide , chemical engineering , polymerization , glass transition , copolymer , composite material , chemistry , thermodynamics , organic chemistry , physics , metallurgy , engineering

Poly( N ‐isopropylacrylamide) (PNIPAAm)/poly(ethylene oxide) (PEO) semi‐interpenetrating polymer networks (semi‐IPNs) synthesized by radical polymerization of N ‐isopropylacrylamide (NIPAAm) in the presence of PEO. The thermal characterizations of the semi‐IPNs were investigated by differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), and dielectric analysis (DEA). The melting temperature ( T m ) of semi‐IPNs appeared at around 60°C using DSC. DEA was employed to ascertain the glass transition temperature ( T g ) and determine the activation energy ( E a ) of semi‐IPNs. From the results of DEA, semi‐IPNs exhibited one T g indicating the presence of phase separation in the semi‐IPN, and T g s of semi‐IPNs were observed with increasing PNIPAAm content. The thermal decomposition of semi‐IPNa was investigated using TGA and appeared at around 370°C. © 2003 Wiley Periodicals, Inc. J Appl Polym Sci 90: 3922–3927, 2003

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