서지주요정보
방향족 폴리아미드들로 구성된 삼성분계의 상평형에 대한 연구 = A study on the phase equilibrium of ternary systems comprising aromatic polyamides
서명 / 저자 방향족 폴리아미드들로 구성된 삼성분계의 상평형에 대한 연구 = A study on the phase equilibrium of ternary systems comprising aromatic polyamides / 이해원.
저자명 이해원 ; Lee, Hae-Won
발행사항 [대전 : 한국과학기술원, 1990].
Online Access 제한공개(로그인 후 원문보기 가능)원문

소장정보

등록번호

8000913

소장위치/청구기호

학술문화관(문화관) 보존서고

MCE 9019

SMS전송

도서상태

이용가능

대출가능

반납예정일

초록정보

Phase characteristics for ternary systems, rodlike polymer/flexible polymer/solvent system and rodlike polymer/another rodlike polymer/solvent system, were determined by polarized optical microscopy at 30℃ and 60℃, and compared with Flory's theory. Poly(p-phenylene terephthalamide) (PPTA, Dupont Co.), M4-polymer and M6-polymer were choosen as rigid rodlike polymers. Among them, M4-polymer and M6-polymer were synthesized by Higashi reaction method. Poly(m- phenylene isophthalamide) (PMIA) was used as a flexible polymer and the single solvent is 100\% $H_2SO_4$. Single anisotropic phase appeared in PPTA-rich regions of PPTA/PMIA/$H_2SO_4$ ternary system because of high axial ratio of PPTA. Also the possibility of the single anisotropic phase was verified through Flory's theory for $x_2=69.3$ and $x_3=10$ in rodlike polymer/flexible polymer/solvent ternary system. On the other hand, M6/PMIA/$H_2SO_4$ system revealed no single anisotropic phase in both experiment and theory. In all the region of this system and PMIA-rich regions of PPTA/PMIA/$H_2SO_4$ system, phase separation due to the poor miscibility between two polymers was predicted and observed at the higher concentration than the critical concentration. PPTA/M6/$H_2SO_4$ and PPTA/M4/$H_2SO_4$ ternary systems were in agreement with theory except the binodial curve for the anisotropic phase which showed an inflection point. In general, with increasing concentration single anisotropic phases were observed at the whole volume ratios of a rodlike polymer to another rodlike polymer in rod/rod/solvent systems. Above all the metioned systems show that the addition of the third component to the binary system yields the extention of biphasic region, and that these systems are consistent with theory qualitatively but not quantitatively because of many assumptions of Flory's theory.

서지기타정보

서지기타정보
청구기호 {MCE 9019
형태사항 ix, 86 p. : 삽도 ; 26 cm
언어 한국어
일반주기 부록 : 1, Program of flory's theory for rodlike/flexible/solvent ternary system. - 2, Program of flory's theory for rodlike/rodlike/solvent ternary system
저자명의 영문표기 : Hae-Won Lee
지도교수의 한글표기 : 정인재
지도교수의 영문표기 : In-Jae Chung
학위논문 학위논문(석사) - 한국과학기술원 : 화학공학과,
서지주기 참고문헌 : p. 76-77
주제 Polymers.
상평형. --과학기술용어시소러스
고분자. --과학기술용어시소러스
Phase diagrams, Ternary.
QR CODE qr code