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| 接枝率对PP—g—MMA非等温结晶动力学的影响 | |
| 引用本文： | 林水东,何立芳,卢晓春,肖凤英,巫友丽.接枝率对PP—g—MMA非等温结晶动力学的影响[J].泉州师范学院学报,2009,27(6):67-71. |
| 作者姓名： | 林水东 何立芳 卢晓春 肖凤英 巫友丽 |
| 作者单位： | 1. 龙岩学院,化学与材料学院,福建,龙岩,364012;四川大学,高分子材料工程国家重点实验室,四川,成都,610065 2. 龙岩学院,化学与材料学院,福建,龙岩,364012 3. 华侨大学,材料科学与工程学院,福建,泉州,362021 |
| 基金项目： | 福建省自然科学基金，福建省科技厅资助项目 |
| 摘 要： | 用差示扫描量热仪（DSC）研究了聚丙烯（PP）和具有不同接枝率的聚丙烯接枝甲基丙烯酸甲酯（PP—g—MMA）的非等温结晶行为，用Avrami方程、莫志深（M0）方程、Dobreva方法和Kissinger方法对该过程进行分析，得到相应的非等温结晶动力学参数．通过对这些参数分析可得出，PP接枝MMA对PP结晶的成核和生长机理存在两方面影响：（1）起成核剂作用，促进PP的成核；（2）会破坏PP结晶的规整性，使PP难规则排列，影响其结晶过程和规整度．因此，对PP结晶来说有一最佳的接枝率，此时，接枝的MMA表现为促进PP的结晶． |
| 关 键 词： | PP—g—MMA 接枝率 聚丙烯 非等温结晶动力学 |
Effect of the Grafted Rate of PP-g-MMA on the Nonisothe-rmal Crystallization Kinetics of Polypropylene |
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| LIN Shui-dong,HE Li-fang,LU Xiao-chun,XIAO Feng-ying,WU You-li.Effect of the Grafted Rate of PP-g-MMA on the Nonisothe-rmal Crystallization Kinetics of Polypropylene[J].Journal of Quanzhou Normal College,2009,27(6):67-71. | |
| Authors: | LIN Shui-dong HE Li-fang LU Xiao-chun XIAO Feng-ying WU You-li |
| Institution: | 1. College of Chemistry ＆ Material Science, Longyan University, Fujan 364012 China 2. State Key Lab. of Polymer Materials Eng. ,Polymer Research Institute of Sichuan University, Sichuan 610065 ,China; 3. College of Materials Science ＆ Engineering, Huaqiao University,Fuian 362021 ,China) |
| Abstract: | The nonisothermal crystallization processes of polypropylene （PP） and polypropylene-g- methyl-methacrylate（PP-g-MMA ）with different grafted rate have been investigated by differential scanning calori-metry （DSC）. The Avrami equation, Mo Zhishen （MO） equation, Dobreva method and the Kissinger method are used to describe the nonisothermal crystallization processes of the above systems. The kinetics parameter values indicate that the mechanisms of nucleation and growth of crystallization are slightly changed by PP grafted MMA. PP-g-MMA plays a nucleating agent role, promotes the nucleation of PP. It will hinder the crystallization of PP. So the best grafted rate of PP-g- MMA on promoting polypr-opylene crystallization exists. |
| Keywords: | PP-g-MMA |
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