| 马来酸酐接枝聚丙烯共聚物的球晶径向生长速率和形态 |
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| 引用本文： | 刘景江.马来酸酐接枝聚丙烯共聚物的球晶径向生长速率和形态[J].应用化学,1993,0(1):25-29. |
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| 作者姓名： | 刘景江 |
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| 作者单位： | 中国科学院长春应用化学研究所 130022 长春 |
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| 摘 要： | 本文用偏光显微镜和DSC研究了马来酸酐接枝聚丙烯共聚物的形态,球晶径向生长速率及结晶熔融行为。马来酸酐与聚丙烯在接枝共聚物中是部分互容的。按照相容性共混高聚物结晶动力学理论计算,Ⅲ区向Ⅱ区转变的温度为132℃,接枝共聚物的结晶平衡熔点为200℃,比全同聚丙烯的相应值低8℃。
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| 关 键 词： | 马来酸酐/聚丙烯接枝共聚物 等温结晶 球晶生长速率 平衡熔融温度 表面自由能 |
| 收稿时间： | 1991-09-17 |
| 修稿时间： | 1992-03-14 |
SPHERULITIC GROWTH RATES AND MORPHOLOGY IN MALEIC ANHYDRIDE-g-POLYPROPYLENE |
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| Liu Jingjiang.SPHERULITIC GROWTH RATES AND MORPHOLOGY IN MALEIC ANHYDRIDE-g-POLYPROPYLENE[J].Chinese Journal of Applied Chemistry,1993,0(1):25-29. |
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| Authors: | Liu Jingjiang |
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| Institution: | Changchun Institute of Applied Chemistry, Sinica, 130022 Changchun |
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| Abstract: | The isothermal radial growth rates of spherulites and the morphology of maleic anhydride-g-polypropylene have been determined by means of polarizing microscope. Chain segments of maleic anhydride and polypropylene in the graft copolymer are partly compatible. A change in the growth region is observed at 132℃ and interpreted as a Region Ⅲ→Region Ⅱ transition, according to the kinetic theory of compatible polymer blend crystallization. The equilibrium melting temperature (Tm0) of the graft copolymer was measured as 200℃, lower than that of ipp. |
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| Keywords: | maleic anhydride-g-polypropylene graft copolymer isothermal crystallization spherulitic growth equilibruim melting temperature surface energy |
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