文章摘要
杨飞,张敏,石建高,余雯雯,邹晓荣,周文博.渔用HDPE/淀粉复合材料的结构与性能[J].水产学报,2019,43(11):2431~2437
渔用HDPE/淀粉复合材料的结构与性能
Structure and properties of HDPE/starch composites for fishing
投稿时间:2018-10-23  修订日期:2019-03-28
DOI:10.11964/jfc.20181011503
中文关键词: 高密度聚乙烯  淀粉  复合材料  渔用材料  结构与性能
英文关键词: high density polyethylene  starch  composites  fishing materials  structure and properties
基金项目:国家自然科学基金(31872611,31502213,31972844);中国水产科学研究院基本科研业务费专项(2019CY0304);中国水产科学研究院东海水产研究所基本科研业务费专项(2019T04)
作者单位E-mail
杨飞 上海海洋大学海洋科学学院, 上海 201306
中国水产科学研究院东海水产研究所, 上海 200090 
 
张敏 上海海洋大学海洋科学学院, 上海 201306 mzhang@shou.edu.cn;石建高,jiangaoshi666@163.com 
石建高 中国水产科学研究院东海水产研究所, 上海 200090 jiangaoshi666@163.com 
余雯雯 中国水产科学研究院东海水产研究所, 上海 200090  
邹晓荣 上海海洋大学海洋科学学院, 上海 201306  
周文博 上海海洋大学海洋科学学院, 上海 201306
中国水产科学研究院东海水产研究所, 上海 200090 
 
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中文摘要:
      采用熔融共混法制备高密度聚乙烯(HDPE)/淀粉复合材料,研究了淀粉含量(w淀粉)对HDPE/淀粉复合材料的流变性、微观结构、热性能、力学性能与动态力学性能的影响。结果显示,淀粉含量为20 wt%时淀粉在HDPE基体中呈微米级均匀分布,淀粉含量增加到30 wt%和50 wt%时呈球状聚集体,其平均粒径从0.6 μm增加到0.8 μm。随淀粉含量增加,HDPE/淀粉复合材料的断裂强力和断裂伸长率显著降低。不同淀粉含量的HDPE/淀粉复合材料均被检测到3个转变峰。HDPE低温下的γ转变峰对应为聚乙烯的玻璃化转变峰,对应于非晶态链段的运动,淀粉含量对γ转变峰影响不大。纯HDPE不存在β峰,β转变与淀粉分散相有关,随淀粉含量增加,复合材料的β峰变宽。高温区出现的α转变与聚乙烯结晶区附近受限链段的运动有关,是一个复杂的多重松弛过程。研究表明,引入一定含量的淀粉可以改善HDPE的加工流变性和韧性,为制备高性能可降解淀粉基渔用材料提供了理论和技术支撑。
英文摘要:
      The high density polyethylene (HDPE)/starch composites were prepared by melt blending. The effects of starch contents on the rheological properties, structure, thermal properties, mechanical properties and dynamic mechanical properties of HDPE/starch composites were studied. The results showed that the introduction of starch improved the rheology and toughness of the composites. When the content of starch was 20 wt%, it was uniformly dispersed at micron -scale thickness in HDPE/ starch composites. When the content of starch increased to 30 wt% and 50 wt%, the starch exhibited spherical dispersed phase in HDPE/starch composites, and the average diameter of starch increased from 0.6 μm to 0.8 μm. The breaking strength and breaking elongation of HDPE/ starch blends decreased significantly with the increase of starch content. All the blends with different starch contents were detected to three transition peaks. The γ transition of HDPE at low temperature corresponds to the glass transition peak of polyethylene, it was related to the movement of the amorphous chain segment, and the content of starch had little effect on the γ transition. The β transition was related to starch phase, there was no β transition for pure HDPE, and the peak became wider with the increase of starch content. The α transition in high temperature zone was related to the movement of the restricted chain near the crystallization zone of polyethylene, and it was a complex multiple relaxation process. Introducing a certain content of starch can effectively enhance the rheology and toughness of the composites, and this result can provide a theoretical and technical basis for the high- performance fishing materials based on degradable starch.
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