Thermal Characterizations of Semi-Interpenetrating Polymer Networks Composed of Poly(ethylene oxide) and Poly(N-isopropylacrylamide)

Seon Jeona Kim, Chang Kee Lee, Young Moo Lee, Kyu Back Lee, Yongdoo Park, Sun I. Kim

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

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 (Tm) of semi-IPNs appeared at around 60°C using DSC. DEA was employed to ascertain the glass transition temperature (Tg) and determine the activation energy (Ea) of semi-IPNs. From the results of DEA, semi-IPNs exhibited one Tg indicating the presence of phase separation in the semi-IPN, and Tgs 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.

Original languageEnglish
Pages (from-to)3922-3927
Number of pages6
JournalJournal of Applied Polymer Science
Volume90
Issue number14
DOIs
Publication statusPublished - 2003 Dec 27

Fingerprint

Interpenetrating polymer networks
Polyethylene oxides
Thermogravimetric analysis
Differential scanning calorimetry
Free radical polymerization
poly-N-isopropylacrylamide
Hot Temperature
Phase separation
Melting point
Pyrolysis
Activation energy

Keywords

  • Activation energy
  • Poly(ethylene oxide)
  • Poly(N-isopropylacrylamide)
  • Thermal properties

ASJC Scopus subject areas

  • Polymers and Plastics

Cite this

Thermal Characterizations of Semi-Interpenetrating Polymer Networks Composed of Poly(ethylene oxide) and Poly(N-isopropylacrylamide). / Kim, Seon Jeona; Lee, Chang Kee; Lee, Young Moo; Lee, Kyu Back; Park, Yongdoo; Kim, Sun I.

In: Journal of Applied Polymer Science, Vol. 90, No. 14, 27.12.2003, p. 3922-3927.

Research output: Contribution to journalArticle

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AU - Park, Yongdoo

AU - Kim, Sun I.

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