폴리(에틸렌 테레프탈레이트)/폴리(에틸렌 나프탈레이트) 공중합체의 유연기판 특성

다국어 초록 (Multilingual Abstract)

The PET-PEN copolymers have been synthesized and the effect of their morphology on the physical properties of polyester flexible substrate was investigated. It was found that the block sequence of synthesized copolymer was varied depending upon DMT/NDC ratio in polymerization. Higher PETPEN and PEN block sequence in polyester copolymer resulted in the increase of glass transition temperature and it caused the enhancement of dimensional stability as a polyester flexible substrate. The highest coefficient of thermal expansion(CTE) was obtained when DMT/NDC ratio is 50/50. Synthesized PET-PEN copolymer seems to be acceptable as a flexible substrate since it shows that their optical transmittance at 550 nm is over 80% and thermal weight loss at 280 ℃ for 1 hr is less than 0.4 wt%.

참고문헌 (Reference)

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