메뉴 건너뛰기
.. 내서재 .. 알림
소속 기관/학교 인증
인증하면 논문, 학술자료 등을  무료로 열람할 수 있어요.
한국대학교, 누리자동차, 시립도서관 등 나의 기관을 확인해보세요
(국내 대학 90% 이상 구독 중)
로그인 회원가입 고객센터 ENG
주제분류

추천
검색

논문 기본 정보

자료유형
학술저널
저자정보
신형철 (서울대학교 생물자원공학부) 나성기 (서울대학교 생물자원공학부) 김대현 (서울대학교 생물자원공학부) 박종신 (서울대학교 생물자원공학부)
저널정보
한국섬유공학회 한국섬유공학회지 한국섬유공학회지 제40권 제1호
발행연도
2003.1
수록면
76 - 84 (9page)

이용수

표지
📌
연구주제
📖
연구배경
🔬
연구방법
🏆
연구결과
AI에게 요청하기
추천
검색

초록· 키워드

오류제보하기
Starch films plasticized with glycerol(weight ratio of starch to glycerol=10:3) were prepared by casting and were subsequently coated with polyurethane(PU) synthesized from castor oil and tolylene diisocyanate(TDI). The coating process was performed using a motor-driven dip-coater and thickness of coated layers was 5~23${\mu}{\textrm}{m}$. The coated layers were stabilized by covalent bonds between excess isocyanate groups of PU and hydroxyl groups of starch films, proved by FT-IR, DSC, and SEM. The effects of PU-coating on water-sorption behavior and mechanical properties of the films were investigated. The flexibility of uncoated films increased with relative humidity(R.H.), however, mechanical properties such as elastic modulus and tensile strength decreased significantly, due to the plasticizing effects of glycerol and water at ambient temperature. Overall absorption/desorption behavior of the coated films under different R.H. conditions was similar to that of uncoated film, whereas sorption rate and amount of sorbed water decreased with increasing coating thickness. In addition, elastic modulus and tensile strength of the coated films increased with thickness of the coated layers in the R.H. ranges investigated when compared with the uncoated films. Therefore, it could be concluded that the water-proof and mechanical properties of starch films were improved by PU-coating.

목차

등록된 정보가 없습니다.

참고문헌 (0)

참고문헌 신청

함께 읽어보면 좋을 논문

논문 유사도에 따라 DBpia 가 추천하는 논문입니다. 함께 보면 좋을 연관 논문을 확인해보세요!

이 논문의 저자 정보

최근 본 자료

전체보기

댓글(0)

0