Journal of the Korean Chemical Society (대한화학회지)

Korean Chemical Society (대한화학회)
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Synthesis and Characterization of Poly(N-isopropylacrylamide) Containing Polydimethylsiloxane

Polydimethylsiloxane을 함유한 poly(N-isopropylacrylamide)？ 합성 및 성질

  • Kim, Young-Sung (School of Chemistry and Biological Sciences, University of Ulsan) ;
  • Bae, Min-Ae (School of Chemistry and Biological Sciences, University of Ulsan) ;
  • Yoon, Koo-Sik (School of Chemistry and Biological Sciences, University of Ulsan)
  • 김용성 (울산대학교 자연과학대학 화학생명과학부) ;
  • 배민애 (울산대학교 자연과학대학 화학생명과학부) ;
  • 윤구식 (울산대학교 자연과학대학 화학생명과학부)
  • Published : 20010600
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Abstract

Poly(N-isopropylacrylamide) (PNIPAAm) containing polydimethylsiloxane (PDMS) was synthesized using PDMS as crosslinking agent, and characterized by IR and DSC. It seems that the copolymer has separated phases, PNIPAAm and PDMS. The $T_g$ of PNIPAAm was decreased in accordance with the increase of PDMS-contents. The swelling behavior of polymer in water was examined with the function of temperature and PDMS-contents as well. The equilibrium swelling ratio of polymer in water was decreased with increasing PDMS-contents, but lower critical solution temperature (LCST) was not significantly affected by the incorporated PDMS-contents.

양 밀단에 methacryl기를 함유한 polydimethylsiloxane(PDMS)을 가교제로 하여 poly(N-isopropylacrylamide)(PNIPAAm)을 합성하여 PDMS를 함유한 PNIPAAm을 얻었다. IR, DSC를 이용하여 그것들의 성질을 조사하였으며 DSC 조사결과 PNIPAAm과 PDMS는 각각 분리된 상으로 존재하는 것이 확인되었으며, PNIPAAm의 $T_g$는 PDMS의 함량이 증가하면 약간씩 감소하였다. 또한 온도에 따른 팽윤도를 조사한 결과 PDMS의 함량이 증가하면 팽윤도는 감소하였으나 lower critical solution temperature(LCST)는 큰 변화가 없었다. 수팽윤된 중합체의 DSC 측정결과도 LCST는 PDMS의 함량에 영향을 받지 않는 다는 것을 확인하였다.

Keywords

References

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