| 聚对苯二甲酸乙二酯缩聚反应分子量再分布 |
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| 引用本文： | 卜海山,尚汉冀,胡秀兰. 聚对苯二甲酸乙二酯缩聚反应分子量再分布[J]. 高分子学报, 1983, 0(6): 477-480 |
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| 作者姓名： | 卜海山 尚汉冀 胡秀兰 |
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| 作者单位： | 复旦大学(卜海山，尚汉冀)，上海机械学院(胡秀兰) |
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| 摘 要： | <正> 本文研究了聚对苯二甲酸乙二酯(PET)的分级结晶现象,结果另文报道。在研究中发现,当高分子量PET组分中加入低分子量PET组分时,表现出十分不同的熔融行为,但在230℃以上长时间等温热处理以后,又恢复高分子量PET的熔融行为。认为,在高温下,具有不同初始分子量分布的两个组分发生了缩聚反应,使分子量重新分布,失去了原来两种不同分子量分布的特征。
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| 收稿时间： | 1983-04-18 |
MOLECULAR WEIGHT REDISTRIBUTION OF POLYCONDENSATION REATION |
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| Bu Hai-shan,Shang Han-ji,Hu Xiu-lan. MOLECULAR WEIGHT REDISTRIBUTION OF POLYCONDENSATION REATION[J]. Acta Polymerica Sinica, 1983, 0(6): 477-480 |
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| Authors: | Bu Hai-shan Shang Han-ji Hu Xiu-lan |
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| Affiliation: | Fudan University; Shanghai Institute of Mechanical Engineering |
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| Abstract: | A new molecular weight distribution is obtained when two samples of PET with different original molecular weight distribution are mixed and the polycondensation reaction occurs further under higher temperature. The values of mass fraction for n-mer have been calculated and plotted as a function of the degree of polymerization for several typical cases. The results have been discussed. |
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