서지주요정보
분자량 분포가 선형고분자의 완화거동과 유변학적 성질에 미치는 영향 = Influence of molecular weight distribution on linear polymer relaxation behaviors and rheological properties
서명 / 저자 분자량 분포가 선형고분자의 완화거동과 유변학적 성질에 미치는 영향 = Influence of molecular weight distribution on linear polymer relaxation behaviors and rheological properties / 김성병.
저자명 김성병 ; Kim, Sung-Byung
발행사항 [서울 : 한국과학기술원, 1989].
Online Access 제한공개(로그인 후 원문보기 가능)원문

소장정보

등록번호

4105525

소장위치/청구기호

학술문화관(문화관) 보존서고

MCE 8906

SMS전송

도서상태

이용가능

대출가능

반납예정일

초록정보

The mechanism of relaxation for an entangled linear chain of polystyrene is analyzed from the standpoint of the tube theory. Dynamic shear measurements were performed to obtain primary viscoelastic constants, $n_0$ and $Je^0$, in binary blends. Zeroshear viscosity $n_0$ and steady-state compliance, $Je^0$ were obtained by dynamic experiment. $n_0$ scaled with average molecular weight as $n_0$ $Mw^{3.4}$, and $Je^0$ increased strongly with polydispersity. And also, the dynamic experiments allow us to define a local tube renewal time and a terminal relaxation time for the relaxation of the longer chain in binary blends. The average relaxation time of nearly monodisperse fractions was proportional to the 3.4-power of molecular weight. In binary blends the terminal relaxation time of the shorter chain had the nearly constant value as its pure state. While, the longer chain experienced the so-called tube renewal by shorter chains constraining it. The time for the completion of local tube renewal was dependent on the weight fraction of the longer chains, being proportional to $w_2^2$. The terminal relaxation time for the longer chain was decreased as the $w_2$ decreased, which was caused by the tube expansion due to the local constraint release.

서지기타정보

서지기타정보
청구기호 {MCE 8906
형태사항 xii, 76 p. : 삽도 ; 26 cm
언어 한국어
일반주기 저자명의 영문표기 : Sung-Byung Kim
지도교수의 한글표기 : 정인재
지도교수의 영문표기 : In-Jae Chung
학위논문 학위논문(석사) - 한국과학기술원 : 화학공학과,
서지주기 참고문헌 : p. 74-76
주제 Polymers.
물리적 성질. --과학기술용어시소러스
고분자. --과학기술용어시소러스
Rheology.
QR CODE qr code