全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...

竹纤维/聚乳酸可生物降解复合材料自然降解性能

, PP. 362-367

Keywords: 竹纤维,聚乳酸,复合材料,力学性能,自然降解

Full-Text   Cite this paper   Add to My Lib

Abstract:

通过注射成型工艺制备竹纤维/聚乳酸(BF/PLA)可生物降解复合材料。利用X射线衍射(XRD)、凝胶渗透色谱(GPC)、三维视频显微镜及扫描电镜(SEM)等分析手段研究了BF/PLA复合材料自然降解性能。研究结果表明:BF/PLA复合材料自然降解过程中BF首先降解,PLA逐步分层缓慢降解,复合材料质量逐渐减少;PLA分子链上酯基与水反应,分子链不断断裂,结晶度减小,平均分子量降低,分子量分布变窄;复合材料颜色变深,表面变得粗糙不平,部分裸露的BF清晰可见,其拉伸强度和冲击强度逐渐下降。12个月后,BF/PLA复合材料质量损失率达到8.87%,PLA重均分子量降低了25.9%,复合材料的冲击强度和拉伸强度分别降低了44.0%和43.8%。BF/PLA可生物降解复合材料在土壤中的自然降解效率较低。

References

[1]  Nishino T, Hirao K, Kotera M, et al. Kenaf reinforced biodegradable composite[J]. Composites Science and Technology, 2003, 63(9): 1281-1286.
[2]  Ndazi B S, Karlsson S, Tesha J V, et al.Chemical and physical modifications of rice husks for use ascomposite panels[J]. Composites Part A: Applied Science and Manufacturing, 2007, 38(3): 925-935.
[3]  Ohkita T, Lee S H. Thermal degradation and biodegradability of poly (lactic acid)/corn starch biocompo-sites[J]. Journal of Applied Polymer Science, 2006, 100(4): 3009-3017.
[4]  Yussuf A A, Massoumi I, Hassan A. Comparison of polylactic acid/kenaf and polylactic acid/riseHusk composites: the influence of the natural fibers on the mechanical, thermal and biodegradability properties[J]. Journal of Polymers and the Environment, 2010, 18(3): 422-429.
[5]  李春光, 徐鹏飞, 李云霞, 等. 玉米秸秆微晶纤维素/聚乳酸复合膜的制备与性能[J].复合材料学报, 2011, 28(4): 94-98. Li Chunguang, Xu Pengfei, Li Yunxia, et al. Preparation and properties of corn stalks cellulose microcrystal reinforced poly(lactic acid) composite film[J]. Acta Materiae Compositae Sinica, 2011, 28(4): 94-98.
[6]  Frank A, Rath S K, Boey F, et al. Study of the inital stages of drug release from a degradable matrix of poly (d, l-lactide-co-glycolide)[J]. Biomaterials, 2004, 25: 813-821.
[7]  杨 斌. 绿色塑料聚乳酸[M].北京: 化学工业出版社, 2007: 130-145. Yang Bin. Polylactic acid[M]. Beijing: Chemical Industry Press, 2007: 130-145.
[8]  张 敏, 崔春娜, 宋 洁. 聚乳酸降解的影响因素和降解机理的分析[J].包装工程, 2008, 29(8): 16-46. Zhang Min, Cui Chunna, Song jie. Analysis of the factors influencing degradability and degradation mechanism of polylactic acid[J]. Packaging Engineering, 2008, 29(8): 16-46.
[9]  刘 磊, 吴若峰. 聚乳酸类材料的水解特征[J]. 合成材料老化与应用, 2006, 35(1): 44-48. Liu Lei, Wu Ruofeng. Hydrolytic properties of PLAs[J]. Synthetic Materials Aging and Application, 2006, 35(1): 44-48.
[10]  樊国栋, 张春梅, 林振宇, 等. 端羧基聚乳酸共聚物的合成及表征[J].功能材料, 2011, 42(增刊 Ⅲ): 541-548. Fan Guodong, Zhang Chunmei, Lin Zhenyu, et al. Synthesis and characterization of carboxyl-terminated poly(lactic acid)[J].Journal of Functional Materials, 2011, 42(Supplement Ⅲ): 541-548.
[11]  Ohkita T, Lee S H. Crystallization behavior of poly (butyle-ne succinate)/corn starch biodegradable composite[J]. Jour-nal of Applied Polymer Sciene, 2005, 97(3): 1107-1114.
[12]  郭文静. 木纤维/聚乳酸生物质复合材料复合因子研究[D].北京: 中国林业科学研究院, 2008. Guo Wenjing. The study on compounding factors of wood fiber/poly(lactic acid) bio-composites[D]. Beijing: Chinese Academy of Foresty, 2008.
[13]  Li S, McCarthy S. Further investigations on the hydrolytic degradation of poly (DL-lactide)[J]. Biomaterials, 1999, 20(1): 35-44.

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133