Article
  • Gas Transport Properties on Plasticized Polycarbonate
  • Ahn JA, Seo WY, Kwon OJ, Min KE
  • 가소화 폴리카보네이트의 기체투과성
  • 안정아, 서원영, 권오진, 민경은
Abstract
The addition of low molecular weight diluents to a certain polymer causes changes in various properties of the polymer mixture associated with antiplasticization, i. e., reduction in glass transition temperature and increase in stiffness. In this study, the effect of diluent on gas permeation properties of polycarbonate(PC) was investigated. The gas permeability coefficients for He, H2, O2, N2, Ar, and CO2 at 35℃ near atmospheric pressure have been measured for the mixture of PC/di-2-ethylhexyl phthalate(DOP) and PC/tricresyl phosphate(TCP). The mobility for gas transport was found to decrease with diluent addition. This propensity was qualitatively correlated with antiplasticization attributed to the change of free volume.

특정 고분자물질은 저분자 희석제가 첨가됨에 따라 유리 전이온도는 감소하는 반면, 기체투과성이나 기계적 성질이 증진되는 이른바 반가소화 현상이 관찰된다. 본 연구에서는 폴리카보네이트에 디-2-에틸헥실 프탈레이트(DOP) 및 트리크레실 포스페이트(TCP)를 각각 첨가하고, He, H2, O2, N2, Ar 및 CO2에 대한 기체투과능을 조사하였다. 기체투과능은 일정량의 희석제가 첨가될때까지 감소하는 경향을 보였으며, 이러한 특성을 자유부피 변화에 따른 반가소화 현상과 관련지워 고찰하였다.

Keywords:

  • Polymer(Korea) 폴리머
  • Frequency : Bimonthly(odd)
    ISSN 0379-153X(Print)
    ISSN 2234-8077(Online)
    Abbr. Polym. Korea
  • 2023 Impact Factor : 0.4
  • Indexed in SCIE

This Article

  • 1994; 18(2): 269-275

    Published online Mar 25, 1994

  • 10.7317/pk.
  • Received on Nov 30, -0001
  • Revised on Nov 30, -0001
  • Accepted on Nov 30, -0001

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