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个人信息Personal Information
副教授
硕士生导师
性别:男
毕业院校:吉林大学
学位:博士
所在单位:机械工程学院
学科:车辆工程. 材料学
办公地点:汽车学院实验室A303
联系方式:18941135528
电子邮箱:chengy@dlut.edu.cn
A comparative study of TiO2 and surface-treated TiO2 nanoparticles on thermal and mechanical properties of poly(epsilon-caprolactone) nanocomposites
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论文类型:期刊论文
发表时间:2012-09-05
发表刊物:JOURNAL OF APPLIED POLYMER SCIENCE
收录刊物:SCIE、EI、Scopus
卷号:125
期号:5
页面范围:3871-3879
ISSN号:0021-8995
关键字:poly(e-caprolactone); surface-treated TiO2; nanocomposites; thermal properties; mechanical properties
摘要:Polymer/inorganic nanocomposites were significant hybrid materials because of their unique properties. The surface of bare nanoparticles (b-TiO2) was modified by aminopropyl trimethoxy silane to obtain grafted TiO2 (g-TiO2) nanoparticles for the improvement of nanoparticles dispersion. The b-TiO2 and resulting g-TiO2 nanoparticles were introduced into poly(e-caprolactone) (PCL) matrix to prepare PCL/TiO2 nanocomposites by in situ polymerization. The effects of b-TiO2 and g-TiO2 nanoparticles on the structure, morphology, and properties of nanocomposites were characterized and compared. The results showed that the crystalline structure of PCL matrix was not affected significantly by adding b-TiO2 or g-TiO2 nanoparticles. The g-TiO2 nanoparticles had a finer dispersion and better compatibility than bare TiO2. The introduction of g-TiO2 into PCL matrix increased the crystallization temperature and improved thermal stability of the nanocomposites with respect to untreated TiO2. The surface-treated nanoparticles played an important role in strengthening mechanical properties of the nanocomposites because of its well dispersion and strong interfacial interaction between the nanoparticles and PCL matrix. (C) 2012 Wiley Periodicals, Inc. J Appl Polym Sci, 2012