|本期目录/Table of Contents|

[1]李 洋,吴 瑶,覃卉婷,等.纳米纤维素与蒙脱土对聚乳酸性能的影响[J].武汉工程大学学报,2015,37(11):27-32.[doi:10. 3969/j. issn. 1674-2869. 2015. 11. 006]
 ,,et al.Effect of cellulose nanocrystals and montmorillonite on properties of polylactic acid composites[J].Journal of Wuhan Institute of Technology,2015,37(11):27-32.[doi:10. 3969/j. issn. 1674-2869. 2015. 11. 006]
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纳米纤维素与蒙脱土对聚乳酸性能的影响(/HTML)
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《武汉工程大学学报》[ISSN:1674-2869/CN:42-1779/TQ]

卷:
37
期数:
2015年11期
页码:
27-32
栏目:
材料科学与工程
出版日期:
2015-12-30

文章信息/Info

Title:
Effect of cellulose nanocrystals and montmorillonite on properties of polylactic acid composites
文章编号:
1674-2869(2015)11-0027-06
作者:
李 洋吴 瑶覃卉婷张 旗*李 超刘治田*
武汉工程大学材料科学与工程学院,湖北 武汉 430074
Author(s):
LI Yang WU Yao QIN Hui-ting ZHANG Qi LI Chao LIU Zhi-tian
School of Materials Science and Engineering, Wuhan Institute of Technology, Wuhan 430074, China
关键词:
聚乳酸薄膜蒙脱土纳米纤维素复合材料
Keywords:
polylactic acid film cellulose nanocrystals montmorillonite composite
分类号:
O631
DOI:
10. 3969/j. issn. 1674-2869. 2015. 11. 006
文献标志码:
A
摘要:
对纳米纤维素(CNC)和蒙脱土(MMT)进行有机改性,制备了一系列的经纳米纤维素、蒙脱土,以及两者混合改性的聚乳酸(PLA)薄膜,并通过红外测试研究了薄膜的化学结构. 用拉伸实验研究了纳米纤维素和有机蒙脱土(OMMT)对PLA薄膜机械性能的影响,结果显示,CNC和OMMT的加入分别提升了PLA的断裂伸长率和拉伸强度. 两种改性剂同时改性的复合薄膜的拉伸强度及断裂伸长率均得到提高,且优于单一添加. 热重分析测试结果显示,OMMT使得聚乳酸热稳定性明显提高,但CNC的加入会使聚乳酸的热稳定性有所降低. 通过扫描电镜观察薄膜的表面形貌,发现两种添加剂均在聚乳酸中均匀分散,而在添加两种添加剂的复合薄膜中,蒙脱土的分布呈海岛结构.
Abstract:
After modifying cellulose nanocrystals(CNC) and montmorillonite(MMT) organically, a series films, including pure polylactic acid(PLA), CNC or organic montmorillonite(OMMT) modified PLA, and CNC/OMMT mixed-modified PLA were prepared. The chemical structures of PLA and PLA composites were characterized by FT-IR. The effect of CNC and OMMT on the mechanical properties of PLA was studied by tensile test. The results reveal that the additions of CNC and OMMT improve the elongation at break and tensile strength of PLA,respectively, and CNC/OMMT mixed-modified PLA shows better properties than single additive-moditied PLA. The result of thermogravimetric analysis shows that the thermostability of PLA is enhanced by adding OMMT, while is reduced by mixing CNC. The surface morphology of the films was observed by scanning electron microscope. The images show that CNC and OMMT disperse in PLA evenly, and OMMT presents sea island structure in CNC/OMMT mixed-modified PLA film.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2015-10-19基金项目:国家自然科学基金(51003080);湖北省青年科技晨光计划(2014.5);武汉市应用基础研究(2015010101010018);武汉市软科学研究计划(2015040606010250)作者简介:李洋渊(1991-),男,湖北武汉人,硕士研究生. 研究方向:高分子化学与物理.* 通信联系人
更新日期/Last Update: 2015-12-11