STUDY ON THE DEGRADATION OF CELLULOSE NANOWHISKERS／POLY(LACTIC ACID) COMPOSITES

摘要：

The composites obtained by solvent casting methods from N, N-Dimethylacetamide (DMAc) were characterized by atomic force microscope (AFM), scanning electron microscope (SEM) and tensile testing machine. The degradation processes of cellulose whiskers/PLA, cellulose whiskers/PLA/PEG composites and pure PLA were investigated in vitro. The results show that cellulose whiskers/PLA/PEG composites have higher mechanical strength and faster degradation rate than pure PLA. The pH values of the SBF drop nearly the same as the PLA. The degradation speed can be controlled by the addition fraction of the PEG and the cellulose whiskers. Due to the good biodegradability of the PLA, cellulose whiskers and PEG, the composites can be used as anti-adhesive absorbable membrane, absorbent stanching dressing, hemostatic gauze, orthopedic surgery and scaffolds for tissue engineering, and so on.

关键词： nano-cellulose whiskers poly(lactic acid) degradation SBF

作者: Qu Ping Gao Yuan Bai Lu Zhang Liping

作者单位: College of Material Science and Technology, Beijing Forestry University, Beijing, 100083, China

会议类型: 国际会议

会议名称: 4th ISETPP(第四届制浆造纸新技术国际研讨会)

会议地点: 广州

会议语种:英文

页码: 73-76

在线出版日期: 2010-11-08（万方平台首次上网日期，不代表论文的发表时间）