Polyvinyl Alcohol (PVA) Films Reinforced with Acid Hydrolyzed Cellulose

• 발행기관: 한국응용과학기술학회 (구.한국유화학회)
• 저자명: Sun Young Lee D.Jagan Mohan Sang Jin Chun In Aeh Kang Soo Lee
• 간행물 정보: 『한국응용과학기술학회지』한국유화학회지 제25권 제3호, 341~346쪽, 전체 6쪽
• 주제분류: 공학 > 화학공학
• 파일형태: PDF
• 발행일자: 2008.09.30

영문 초록

Cellulose nanofibers from microfibril cellulose (MFC) was prepared by hydrobromic acid (HBr) treatment at different concentrations. Polyvinyl alcohol (PVA) composite films at various loading level of nanofibers were manufactured by a film casting method. The analysis of degree of polymerization (DP), crystallinity (Xc) and molecular weight (Mw) of cellulose after acid treatment was conducted. The mechanical and thermal properties of the cellulose nanofibers reinforced PVA films were characterized using tensile tests and thermogravimetric analysis (TGA). The DP and Mw of MFC by HBr hydrolysis considerably decreased, but Xc showed no significant change. After acid hydrolysis, the diameter of cellulose nanofibers was in the range of 100 to 200 nm. The thermal stability of the films was steadily improved with the increase of nanofiber loading. There was a significant increase in the tensile strength of PVA composite films with the increase in MFC loading. Finally, 5 wt.% nanofiber loading exhibited the highest tensile strength and thermal stability of PVA composite films.

목차

1. Introduction

2. Experimental

3. Results & Discussion

4. Conclusions

References

키워드

MFC nanocomposite film PVA nanofibers