小本体聚丙烯及其接枝丙烯酰胺的非等温结晶动力学

史铁钧; 周亚斌; 王华林; 任强

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小本体聚丙烯及其接枝丙烯酰胺的非等温结晶动力学

材料科学与工程 | 更新时间：2025-12-10

- 小本体聚丙烯及其接枝丙烯酰胺的非等温结晶动力学
- Non-isothermal crystallization kinetics of batch bulk polypropylene and acrylamide graft polypropylene
- 化工学报 2005年第11期页码：2240-2244
- 作者机构：
  
  合肥工业大学化工学院,安徽,合肥,230009
- 作者简介：
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- 网络首发：2005-11-25，
  
  纸质出版：2005-11-25
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史铁钧, 周亚斌, 王华林, 等. 小本体聚丙烯及其接枝丙烯酰胺的非等温结晶动力学[J]. 化工学报, 2005,(11):2240-2244.

SHI Tiejun, ZHOU Yabin, WANG Hualin, et al. Non-isothermal crystallization kinetics of batch bulk polypropylene and acrylamide graft polypropylene[J]. CIESC Journal, 2005, (11): 2240-2244.
史铁钧, 周亚斌, 王华林, 等. 小本体聚丙烯及其接枝丙烯酰胺的非等温结晶动力学[J]. 化工学报, 2005,(11):2240-2244. DOI：

SHI Tiejun, ZHOU Yabin, WANG Hualin, et al. Non-isothermal crystallization kinetics of batch bulk polypropylene and acrylamide graft polypropylene[J]. CIESC Journal, 2005, (11): 2240-2244. DOI：

摘要

采用DSC方法测试了小本体聚丙烯（PP）及其接枝丙烯酰胺（PP-g-AM）非等温结晶过程的释热情况，并对两组实验数据分别运用Jeziorny法和Mo法进行了处理和比较.结果表明，两种方法均可准确地描述PP及PP-g-AM的非等温结晶过程.PP接枝前后Avrami指数n无明显改变，表明两者结晶机理基本相同;由Jeziorny法得到接枝产物的校正晶体增长速率常数Zc略大于纯PP的Zc;由Mo法计算得出，PP-g-AM的F(T)值略小于纯PP的F（T），表明接枝物的相对结晶速率略大于纯PP的相对结晶速率.

Abstract

The non-isothermal crystallization kinetics of batch bulk polypropylene (PP) and acrylamide graft polypropylene (PP-g-AM) were studied by means of differential scanning calorimetry (DSC).The Jeziorny method and Mo method were used to analyze the DSC data.The results showed that both methods could describe the non-isothermal crystallization processes of PP and PP-g-AM accurately.The Avrami exponent did not change after grafting obviously

which indicated that the crystallization mechanism of PP-g-AM was almost the same as PP.The values of modified crystal growth constant Zc of PP-g-AM were a little higher than those of pure PP. The values of F(T) of PP-g-AM were a little lower than those of pure PP

which indicated that PP-g-AM had a faster rate of crystallization.The result conformed to the slight degradation of PP chains in the grafting process.

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