Shape Effect of Nanoparticles on the Interfacial Chain Confinement and Entanglement in Polymer Nanocomposites

Ming-he Sun; Wen-zhi Cui; Wei You; Wei Yu

doi:10.11777/j.issn1000-3304.2025.25179

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Shape Effect of Nanoparticles on the Interfacial Chain Confinement and Entanglement in Polymer Nanocomposites

Research Article | 更新时间：2025-12-18

- Shape Effect of Nanoparticles on the Interfacial Chain Confinement and Entanglement in Polymer Nanocomposites
- Acta Polymerica Sinica Vol. 56, Issue 12, Pages: 2361-2370(2025)
- 作者机构：
  
  上海交通大学化学化工学院流变学研究所上海 200240
- 作者简介：
  
  Wei You, E-mail: weiyou13@sjtu.edu.cn
  Wei Yu, E-mail: wyu@sjtu.edu.cn
- 基金信息：
- DOI：10.11777/j.issn1000-3304.2025.25179
  CLC：
- CSTR：32057.14.GFZXB.2025.7467
- Received：31 July 2025，
  
  Accepted：17 September 2025，
  
  Published Online：12 November 2025，
  
  Published：20 December 2025
- 稿件说明：
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孙铭鹤, 崔文志, 尤伟, 俞炜. 纳米粒子形状对高分子纳米复合材料界面链受限和缠结的影响. 高分子学报, 2025, 56(12), 2361-2370

Sun, M. H.; Cui, W. Z.; You, W.; Yu, W. Shape effect of nanoparticles on the interfacial chain confinement and entanglement in polymer nanocomposites. Acta Polymerica Sinica, 2025, 56(12), 2361-2370
孙铭鹤, 崔文志, 尤伟, 俞炜. 纳米粒子形状对高分子纳米复合材料界面链受限和缠结的影响. 高分子学报, 2025, 56(12), 2361-2370 DOI： 10.11777/j.issn1000-3304.2025.25179. CSTR： 32057.14.GFZXB.2025.7467.

Sun, M. H.; Cui, W. Z.; You, W.; Yu, W. Shape effect of nanoparticles on the interfacial chain confinement and entanglement in polymer nanocomposites. Acta Polymerica Sinica, 2025, 56(12), 2361-2370 DOI： 10.11777/j.issn1000-3304.2025.25179. CSTR： 32057.14.GFZXB.2025.7467.

摘要

探讨了纳米粒子形状对高分子纳米复合材料(PNCs)界面链受限和缠结的影响，以球形二氧化硅、短棒状二氧化硅和多壁碳纳米管(MWCNTs)分散在聚甲基丙烯酸甲酯(PMMA)基体的纳米复合材料为研究对象，发现玻璃化转变温度和玻璃化转变中损耗角正切的最大值依赖于比表面积、表面曲率和表面相互作用强度等多种因素，更大的长径比和更小的直径是强化界面受限的关键. 在更大尺度上，所研究的纳米复合材料中的链缠结行为均满足管子模型，而纳米粒子的比表面积和表面曲率是决定界面缠结密度大小的主导因素，较低曲率的表面可显著增强界面拓扑约束的程度.

Abstract

This study investigates how the shape of nanoparticles affects interfacial chain confinement and entanglement in polymer nanocomposites (PNCs). Specifically

different types of PNCs were fabricated by incorporating spherical silica

short-rod-shaped silica

and multi-walled carbon nanotubes (MWCNTs) into a poly(methyl methacrylate) (PMMA) matrix. The results revealed that the glass transition temperature and the maximum loss tangent during the glass transition depended on multiple factors

including the specific surface area

the surface curvature

and the interfacial interaction strength. On a larger length scale

the chain entanglements in all nanocomposites still follow the tube model

while the specific area and surface curvature are the key factors controlling the interfacial entanglement density

with lower surface curvature significantly enhancing the topological constraints in the interfacial area.

关键词

Keywords

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