Ultrasound initiated maleic anhydride grafted onto a novel polypropylene copolymer |
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| Authors: | Bo Peng Hong Wu Wenting Bao Shaoyun Guo Yong Chen Hua Huang Shih‐Yaw Lai Jinder Jow |
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| Affiliation: | 1. The State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute of Sichuan University, Chengdu 610065, China;2. Dow Chemical (China) Investment Company, Shanghai 200120;3. Dow Chemical Company, Freeport, Texas 77541 |
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| Abstract: | The reaction of maleic anhydride (MAH) grafted onto propylene‐based copolymer (DP) without adding any initiator was conducted through ultrasound assisted extrusion in this article. The effects of ultrasound power, die temperature, and MAH content on the grafting degree and efficiency were studied. With increasing ultrasound power, the grafting degree and efficiency of DP‐g‐MAH increase. The presence of ultrasound with higher power and lower die temperature is beneficial to increase the grafting degree and efficiency. The increase of MAH content can increase the grafting degree but reduce the grafting efficiency. Based on the results of melt flow index, dynamical rheological, gel permeation chromatograph (GPC), and Fourier transform infrared spectroscopy (FTIR) tests, the mechanisms of the grafting reaction were proposed. POLYM. ENG. SCI., 2012. © 2011 Society of Plastics Engineers |
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