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聚合物-纳米粒子二元混合物的热演变

Sanjay Kumar^1,2, Sangram K Rath³, Ashwani Kushwaha⁴

¹Department of Chemical Engineering, B.M.S. College of Engineering, Bengaluru 560 019, India.

Physical chemistry chemical physics : PCCP

|January 5, 2024

概括

聚合物-纳米粒子混合物的热演变改变了纳米粒子结晶性和聚合物-纳米粒子相互作用. 这个过程创建了一个分散的接口,影响材料特性.

科学领域:

材料科学材料科学材料科学
聚合物科学聚合物科学
纳米技术纳米技术

背景情况:

聚合物-纳米粒子 (NP) 混合物表现出独特的特性,受热历史的影响.
了解热进化过程中的微观变化对于定制材料性能至关重要.

研究的目的:

实验性地研究热演变对NP分散,结晶性,聚合物-NP接口和相互作用的影响.
将这些变化映射到各种温度和NP度的地图上.

主要方法:

实验探测一个模型的聚丁和粘土纳米板块混合物.
在温度 (T > Tg) 和NP度的频谱中进行分析.

主要成果:

热演变和NP度对NP分散没有影响.
随着热演变,NP晶体秩序显著下降.
一个利的聚合物-NP接口过渡到一个扩散层,而已经扩散的接口保持不变.
主要的相互作用从聚合物-聚合物转向聚合物-NP.

结论:

热演变显著影响NP结晶性和聚合物-NP界面特性.
这项研究解释了聚合物-纳米粒子混合物中异常行为的分子基础.
这些发现为设计先进的纳米复合材料提供了洞察力.

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