서지주요정보
전분을 기초로 한 생분해성 고분자의 가공성 = Processability of biodegradable polymers based on starch
서명 / 저자 전분을 기초로 한 생분해성 고분자의 가공성 = Processability of biodegradable polymers based on starch / 이용만.
저자명 이용만 ; Lee, Yong-Man
발행사항 [대전 : 한국과학기술원, 1992].
Online Access 원문보기 원문인쇄

소장정보

등록번호

8003022

소장위치/청구기호

학술문화관(문화관) 보존서고

MCE 92028

SMS전송

도서상태

이용가능

대출가능

반납예정일

초록정보

Biodegradable polymers have the same properties and functions as general synthetic polymers, but are distinct in that they can be broken down by microorganisms without polluting the environment. In this study, the modification of starch was executed to change property of starch from hydrophilic into hydrophobic with three different approaches. These experiments are intended to enhance compatibility between starch and LDPE. The first approach is the esterification reaction between the hydroxyl groups of native starch (NS) and acetic anhydride (called MS). The second is graft copolymerization of acrylonitrile and styrene onto starch (GS). The third is the esterification reaction between the hydroxyl groups of starch and the side groups of ionomer (IS). The first and second classes of polymers were investigated by IR spectrum. The progress of third experiment was measured using the pH meter. The mechanical properties of pure LDPE and its blends with three classes of biodegradable polymers compared by means of tensile strength, percent elongation, and Young's modulus, and rheological behaviors were also observed by capillary rheometer. The morphology of blends was investigated by SEM photographs. In cases of IS and NS, tensile strengths decrease at the 10% starch, but after that increase gradually. But MS and GS show a continuous decrease in tensile strength as the composition of starch is increased. The percent elongation decreases remarkably as small amount of modified starch is added. After 10%, the percent elongation decreases gradually. The Young's modulus increases generally in the overall range of starch composition. The shear viscosity increases uniformly at the overall shear rate as the composition of starch is increased. In the morphology, IS is shown the best compatibility.

서지기타정보

서지기타정보
청구기호 {MCE 92028
형태사항 x, 64 p. : 삽도 ; 26 cm
언어 한국어
일반주기 저자명의 영문표기 : Yong-Man Lee
지도교수의 한글표기 : 정인재
지도교수의 영문표기 : In-Jae Chung
학위논문 학위논문(석사) - 한국과학기술원 : 화학공학과,
서지주기 참고문헌 : p. 63-64
주제 Starch.
생물 분해. --과학기술용어시소러스
전분. --과학기술용어시소러스
Biodegradation.
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