서지주요정보
블록 공중합체와 단일 중합체 액정 폴리에스터 블렌드의 물성에 관한 연구 = Properties of the liquid crystal polyester blends of homo block copolymers
서명 / 저자 블록 공중합체와 단일 중합체 액정 폴리에스터 블렌드의 물성에 관한 연구 = Properties of the liquid crystal polyester blends of homo block copolymers / 계광수.
저자명 계광수 ; Kye, Kwang-Soo
발행사항 [대전 : 한국과학기술원, 1990].
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소장정보

등록번호

8000877

소장위치/청구기호

학술문화관(문화관) 보존서고

MCE 9001

SMS전송

도서상태

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초록정보

Thermotropic liquid crystalline polymers with two different mesogenic groups of smectic and nematic state were prepared in the form of homopolymer and block copolymer. The monomers were 4,4'-dihydroxy- 1,10-diphenoxy decane and 1,10 -bis(4-hydroxyhenzoyloxy) decane, which had identical number of methylene unit as the flexible spacer. The homopolymers having different molecular weights were synthesized by varying the stochiometric ratio of the monomer and terephthaloyl dichloride. In order to synthesize the block copolymer, hydroxyl terminated oligomer having nematic monomer unit and acid chloride terminated oligomer having smectic monomer unit were reacted. Blends were prepared by mixing the block copolymer and homopolymer using solution/precipitation method. The transition temperatures of blends were determined by the heating thermograms of the differential scanning calorimeter (DSC) and the observation on the polarizing microscope. From these results, the phase diagram was established with weight ratio of the block copolymer and homopolymer. Also, degree of crystallinity of the blends were investigated by using wide angle X-ray diffraction (WAXD) method.

서지기타정보

서지기타정보
청구기호 {MCE 9001
형태사항 [viii], 54 p. : 삽도 ; 26 cm
언어 한국어
일반주기 저자명의 영문표기 : Kwang-Soo Kye
지도교수의 한글표기 : 김성철
지도교수의 영문표기 : Sung-Chul Kim
학위논문 학위논문(석사) - 한국과학기술원 : 화학공학과,
서지주기 참고문헌 : p. 53-54
주제 Block copolymers.
액정. --과학기술용어시소러스
중합체. --과학기술용어시소러스
Liquid crystals.
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