서지주요정보
폴리카보네이트-폴리(옥시테트라메틸렌) 글리콜 블록공중합체의 합성 및 물성 = Synthesis and characterization of Polycarbonate-Poly(Oxytetramethylene) Glycol block copolymer
서명 / 저자 폴리카보네이트-폴리(옥시테트라메틸렌) 글리콜 블록공중합체의 합성 및 물성 = Synthesis and characterization of Polycarbonate-Poly(Oxytetramethylene) Glycol block copolymer / 천승한.
저자명 천승한 ; Cheon, Seung-Han
발행사항 [대전 : 한국과학기술원, 1994].
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소장정보

등록번호

8004914

소장위치/청구기호

학술문화관(문화관) 보존서고

MAME 94010

휴대폰 전송

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리뷰정보

초록정보

Polycarbonate based multi-block copolymers were prepared by the reaction of phosgene with the mixtures of bisphenol-A and poly(tetramethylene)glycol in the presence of the triethylamine. The resulting copolymer were studied in detail for property-structure effects as a function of glycol and copolymer composition 10∼70wt(%) of a polymeric glycol. It is suggested that the observed viscosity and thermal property property effects result a large extent from the variation in poly(bisphenol-A carbonate)block length accompanies the changing of polymer composition. PC-oligomer with softening point(190℃) was prepared by interfacial polymerization of mol ratio phosgene/BPA:0.9. PTMG-bischloroformate was prepared by two reactants mol ratio, phosgene/PTMG : 6.0, From IR spectrum peak of OH group disappeared perfectly. PC-PTMG block copolymers having two different chemical properties were prepared by reaction of acyl chlorides terminated-PTMG from mixtures of PC oligomer or BPA. Syntheses of these copolyesters required polycondensation catalysts. The catalysts based on triethylamine and phase transfer agents based on TBAC 0.1 wt(%) was found to be more effective than those based on non-catalysts. Depending on the contents and addition rate of PTMG-bischloroformate, reaction temperature, time was applied. As the contents of PTMG increases, thermal decomposition initial temperature of the copolymers decreases linearly.

서지기타정보

서지기타정보
청구기호 {MAME 94010
형태사항 iv, 45 p. : 삽도 ; 26 cm
언어 한국어
일반주기 저자명의 영문표기 : Seung-Han Cheon
지도교수의 한글표기 : 조의환
지도교수의 영문표기 : I-Whan Cho
학위논문 학위논문(석사) - 한국과학기술원 : 신소재공학과,
서지주기 참고문헌 : p. 42-44
주제 Graft copolymers.
Polymerization.
Carbonate minerals.
Thermal properties.
폴리카르보네이트. --과학기술용어시소러스
중합체. --과학기술용어시소러스
화학 합성. --과학기술용어시소러스
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