PP-g-MAH接枝共聚物的制备及结晶动力学的研究

材料科学论文编号:CL087  论文字数:9048,页数:30

目  录
中文摘要 I
英文摘要 II
目录 III
1. 绪论 1
 1.1  引言 1
 1.2 MAH接枝PP的早期研究 1
 1.3 溶液接枝 1
 1.4 接枝反应原理 2
 1.5结晶动力学 3
 1.5.1 结晶速度的测定方法 3
 1.5.2 Avrami方程 3
 1.6论文的研究意义 4
2. 实验部分 6
 2.1 原料和设备 6
 2.1.1 原料和试剂 6
 2.1.2 实验仪器和设备 6
 2.2 实验方法 6
     2.2.1 接枝物的制备 6
     2.2.2 接枝率的测定 6
     2.2.3 红外光谱分析 6
     2.2.4 球晶的培养与观察 7
     2.2.5 DSC测定 7
3. 结果与讨论 7
 3.1 红外光谱分析 7
 3.2 偏光显微镜观察形态 8
 3.3 结晶动力学 10
 3.3.1非等温结晶数据处理 10
 3.3.2 等温结晶数据处理 17
4．总结与展望 23
致谢 24
参考文献 25

摘 要：本论文用自由基聚合方法，以过氧化苯甲酰（BPO）为引发剂，马来酸酐（MAH）为接枝单体来接枝聚丙烯。红外光谱分析结果表明，接枝产物比PP多出一个羰基的吸收峰。用偏光显微镜对PP和PP-g-MAH的形貌、结构、粒径等进行了表征，实验表明PP和PP-g-MAH的晶粒都是典型的球形结构，接枝后晶粒尺寸减小。采用差示扫描量热仪( DSC ) 对PP和PP-g-MA的等温结晶动力学和非等温结晶动力进行研究。非等温过程，研究了降温速率分别在5、10、20、40℃/min下的结晶行为；等温结晶过程分别研究了结晶温度在128、130、132、134、136℃下的结晶行为；并对实验数据采用Avrami方程和ozawa方程进行分析，求出结晶动力学指数、 结晶速率常数等数据。
 

关键词：聚丙烯；马来酸酐；接枝共聚物；结晶动力学

Abstract: In this paper, the graft copolymer PP-g-MAH was prepared by polypropylene and maleic anhydride (MAH) by free radical polymerization with the initiator benzoyl peroxide (BPO).The copolymer was characterized by IR,it is showed that copolymer posses more a Carbonyl group of peaks compared with PP. The crystallization morphology was in investigation by polarizing microscope,and the size of crystal was measured.The isothermal and non-isothermal kinetics of copolymer was researched by differential scanning calorimetry (DSC).In the non-isothermal process, the crystallization kinetics was investigated with different cooling rate such as 5, 10, 20, 40℃/min. respectively.In the isothermal process, the crystallization kinetics was investigated with different annealing temperature such as 128, 130,132,134 and 136℃.The DSC dates was discussed by Avrami and Ozawa equation,and the index of crystallization kinetics and crystallization rate constant was obtained .

Keywords: Polypropylene(PP); Maleic anhydride (MAH); Graft copolymer; Crystallization kinetics