Textile Science and Engineering (한국섬유공학회지)
- Volume 28 Issue 1
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- Pages.43-52
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- 1991
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- 1225-1089(pISSN)
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- 2288-6419(eISSN)
Preparation and Characterization of Cellulose Membranes Cross - Linked with Polyvinyl Alcohol in a Homogeneous System
균일계에서 폴리비닐알코올과 가교된 셀룰로오스막의 제조와 특성화
- Ryu, Dong-Il (Dept.of Textile Engineering, Engineering College, Chonnam National Universityisy) ;
- Choe, Jang-Nam ;
- Sin, Yun-Suk
- Published : 1991.01.01
Abstract
Blend films of cellulose with polyvinyl alcohol (PVA) were prepared in N,N- dimethyl-acetamide (DMAc)11 ithiu m chloride (LiCl) and d imethylsu Ifoxide (DMSO) /paraformald e hyde (PF) by coagulation in water and were cross - linked by heat treatment. Blend solutions were miscible subsequently over the wide composition range except the blend range of cellulose/PVA 10/90~20/80 in DMSO/PF, The wide angle x- ray diffraction result indicates that the crystallinity of blend films increases with increasing PVA content. Fractured surfaces of cross - linked films observed by scanning electron microscope (SEM) show that roughness increases in the intermediate blend ratio. The films prepared in DMSO/PF show better thermal stability than those prepared in DMAc/LiCl. The stability increases with increasing PVA content. The permeation coefficients of films prepared in DMAe/LiCl are larger than those in DMS/fPF and show maximum value in the intermediate composition range.
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