Study on Crystallization and Melting Behavior of UV Photo-oxidative Degradated PP/nano-CaCO<sub>3</sub> Composites

WANG Yuhai; ZHANG Zishou; TAO Youji; ; MAI Kancheng

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Study on Crystallization and Melting Behavior of UV Photo-oxidative Degradated PP/nano-CaCO₃ Composites

更新时间：2023-12-11

- Study on Crystallization and Melting Behavior of UV Photo-oxidative Degradated PP/nano-CaCO₃ Composites
- Acta Scientiarum Naturalium Universitatis SunYatseni Vol. 49, Issue 5, Pages: 67-71(2010)
- 作者机构：
  
  1. 中山大学化学与化学工程学院//教育部聚合物基复合材料及功能材料重点实验室//新型聚合物材料设计合成与应用广东省高校重点实验室,广东,广州,510275
  2. 
  3. 美的集团,广东,佛山,528300
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2010，
  
  Published Online：25 September 2010，
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WANG Yuhai, ZHANG Zishou, TAO Youji, et al. Study on Crystallization and Melting Behavior of UV Photo-oxidative Degradated PP/nano-CaCO₃ Composites. [J]. Acta Scientiarum Naturalium Universitatis SunYatseni 49(5):67-71(2010)
DOI：

WANG Yuhai, ZHANG Zishou, TAO Youji, et al. Study on Crystallization and Melting Behavior of UV Photo-oxidative Degradated PP/nano-CaCO₃ Composites. [J]. Acta Scientiarum Naturalium Universitatis SunYatseni 49(5):67-71(2010) DOI：

摘要

用DSC和WAXD研究了紫外光老化PP/纳米CaCO

（PP/CC）和相容剂改性PP/CC复合材料的结晶与熔融行为，结果表明随着紫外光老化时间增加，PP熔融温度逐渐降低，结晶度先增加后趋于稳定；PP结晶温度先提高后降低，PP/CC结晶温度降低，相容剂改性PP/CC降低更加明显。紫外光老化PP/CC结晶温度高于纯PP，表明CC对老化PP还具有异相成核作用。未光照的PP-g-MA和POE-g-MA改性PP/CC结晶温度高于未改性的，归结于相容剂与CC相互作用形成的钙盐的异相成核作用；但紫外光老化后PP结晶温度低于未改性PP/CC的，归结于钙盐受到紫外光的作用，失去对PP结晶的异相成核作用和诱导PP生成β晶的能力。

Abstract

The crystallization and melting behavior of UV photo-oxidative degradated PP/nano-CaCO

(PP/CC) and its composites modified by compatibilizers were investigated by DSC and WAXD analyses. The results indicated that with increasing the UV exposure time

the melting temperatures of PP decreased and degree of crystallization of PP increased. The crystallization temperature of PP first increased and later decreased and the crystallization temperature of PP in PP/CC composites decreased

especially its composites modified by compatibilizers. The crystallization temperatures of UV photo-oxidative degradated PP/CC were higher than that of PP. It is attributed to the heterogonous nucleation of nanoCaCO3. The crystallization temperatures of PP/CC composites modified by PP-g-MA and POE-g-MA were higher than that of unmodified composites. However

the crystallization temperatures of UV photo-oxidative degradated PP/CC composites modified by compatibilizers were lower than that of unmodified composites. It is suggested that the UV photo-oxidative degradation resulted in the decreased heterogonous nucleation of carboxylate salts formed by the chemical reaction between compatibilizer and nano-CaCO

particles.

关键词

聚丙烯纳米复合材料紫外光老化结晶与熔融行为

Keywords

polypropylenenanocompoaitesUV photo-oxidationcrystallization and melting behavior

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Related Author

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MAI Kancheng

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

ZHANG Zishou

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Related Institution

Key Laboratory of Polymeric Composites and Functional Materials, the Ministry of Education// Key Laboratory of Designed Synthesis and Application of Polymer Material of Guangdong Province// Materials Science Institute, School of Chemistry and Chemical Engineering, Sun Yat-sen University

Materials Science Institute, PCFM Lab, DSAPM Lab, School of Chemistry and Chemical Engineering, Sun Yatsen University

State Key Laboratory of Environmental Adaptability for Industrial Products, China National Electric Apparatus Research Institute

Key Laboratory of Polymeric Composites and Functional Materials, the Ministry of Education∥ Key Laboratory of Designed Synthesis and Application of Polymer Material of Guangdong Province∥ Materials Science Institute, School of Chemistry and Chemical Engineering, Sun Yatsen University Guangzhou

Materials Science Institute∥Key Laboratory of Polymeric Composites and Functional Materials of Ministry of Education∥Guangdong Provincial Key Laboratory of High Performance Polymer-based Composites, School of Chemistry and Chemical Engineering, Sun Yat-sen University

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Study on Crystallization and Melting Behavior of UV Photo-oxidative Degradated PP/nano-CaCO3 Composites

DOI：

摘要

Abstract

关键词

Keywords

references

Study on Crystallization and Melting Behavior of UV Photo-oxidative Degradated PP/nano-CaCO₃ Composites