Role of reactive compatibilization in preparation of nanosilica/polypropylene composites |
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| Authors: | Hong Jun Zhou Min Zhi Rong Ming Qiu Zhang Wen Hong Ruan Klaus Friedrich |
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| Affiliation: | 1. Department of Chemistry and Chemical Engineering, Zhongkai University of Agriculture and Technology, Guangzhou 510225, People's Republic of China;2. Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education, Zhongshan University, Guangzhou 510275, People's Republic of China;3. Materials Science Institute, Zhongshan University, Guangzhou 510275, People's Republic of ChinaKey Laboratory for Polymeric Composite and Functional Materials of Ministry of Education, Zhongshan University, Guangzhou 510275, People's Republic of China;4. Materials Science Institute, Zhongshan University, Guangzhou 510275, People's Republic of China;5. Institute for Composite Materials (IVW), University of Kaiserslautern, D‐67663 Kaiserslautern, Germany |
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| Abstract: | The effect of reactive compatibilization on the mechanical properties of nanosilica filled polypropylene (PP) composites was studied in this work. First, the nanoparticles were grafted with poly(glycidyl methacrylate) (PGMA) by solution free‐radical polymerization, and then melt blended together with PP matrix and aminated PP (PP‐g‐NH2) that acts as reactive compatibilizer. The reaction between epoxide groups of the grafted PGMA on the nanoparticles and amine groups of PP‐g‐NH2 during compounding greatly improved interfacial interaction in the composites. As a result, tensile strength, Young's modulus, and notch impact strength of PP composites were increased at rather low filler content. The experimental results indicated that the reinforcing and toughening effects were controlled by flexibility of the grafted polymer as well as processing methods. POLYM. ENG. SCI., 47:499–509, 2007. © 2007 Society of Plastics Engineers. |
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