Textile Science and Engineering (한국섬유공학회지)

The Korean Fiber Society (한국섬유공학회)
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Structure-Dynamic Mechanical Properties of the Poly(ethylene Terephthalate) Film Grafted with AA/MMA

그라프트중합에 의한 PET Film의 미세구조변화에 관한 연구

  • Lee, Ki-Pung (Department of Textile Engineering, College of Engineering Hanyang University) ;
  • Kim, Sang-Yool (Department of Textile Engineering, College of Engineering Hanyang University) ;
  • Song, Suk-Kyu (Department of Textile Engineering, College of Engineering Hanyang University)
  • 이기풍 (한양대학교 공과대학 섬유공학과) ;
  • 김상율 (한양대학교 공과대학 섬유공학과) ;
  • 송석규 (한양대학교 공과대학 섬유공학과)
  • Published : 1985.12.01

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Abstract

The change of fine structure in the PET film grafted with acrylic acid(AA)/methyl methacrylate(MMA), using benzoylperoxide(BPO) as an initiator, was investigated. The change of PET film was measured by IR, Rheovibron, DSC and polarizing microscope. It was shown that the optimum conditions for maximum grafting ratio were〔AA/MMA〕7:8(wt.%), LiCI conc. 15mmol./1, reaction temp. 90℃, reaction time 1hr. The peak and peak temperature of tanδ curve, the storage modulus E' were decreased and the peak temperature of loss modulus E" was shifted considerably to lower temperature by increasing grafting ratio. The elastic modulus fraction(fe) and heterogeneity index of amorphous region(nt) were increased by increasing reaction time and grafting ratio.

Keywords