Halloysite nanotubes grafted with polyetheramine to reinforce epoxy composites for high strength and toughness

IF 4 3区化学 Q2 POLYMER SCIENCE

Polymer Bulletin Pub Date : 2025-07-19 DOI:10.1007/s00289-025-05890-5

Tianyuan Gong, Liuyue Zhong, Haixiong Tang, Tingcheng Li, Junheng Zhang

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引用次数: 0

Abstract

Halloysite nanotubes (HNTs)-reinforced epoxy composites are commonly utilized in a multitude of applications due to their excellent mechanical properties. However, the development of epoxy composites with high interfacial strength remains a significant challenge. In this work, polyetheramine-grafted halloysite nanotubes (PEA-HNTs) were prepared to fabricate strong and tough epoxy composites. The influence of polyethylene amine-functionalized halloysite nanotubes (PEA-HNTs) incorporation on both the mechanical performance and free volume holes in epoxy matrix composites was systematically investigated through positron annihilation lifetime spectroscopy (PALS). The results demonstrated that PEA-HNTs were uniformly dispersed in the epoxy matrix, forming strong interfacial interaction. The nanoscale dispersion architecture effectively decreased the free volume hole size (\(V_{f}\)) and relative free volume \((f_{r} )\), resulting in the improved mechanical properties. This work presents a novel and scalable strategy for developing high-performance epoxy composites through rational nanotube functionalization and interfacial engineering.

Graphical abstract

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聚醚胺接枝高岭土纳米管增强环氧复合材料的高强度和韧性

高岭土纳米管（HNTs）增强环氧复合材料由于其优异的机械性能而被广泛应用于多种应用中。然而，开发具有高界面强度的环氧复合材料仍然是一个重大挑战。本研究制备了聚醚胺接枝高岭土纳米管（PEA-HNTs），用于制备强韧性环氧复合材料。利用正电子湮没寿命谱（PALS）系统研究了聚胺功能化高岭土纳米管（PEA-HNTs）掺入对环氧基复合材料力学性能和自由体积空穴的影响。结果表明，PEA-HNTs均匀分散在环氧基体中，形成较强的界面相互作用。纳米级分散结构有效地降低了自由体积孔洞尺寸（\(V_{f}\)）和相对自由体积\((f_{r} )\)，从而改善了力学性能。本研究通过合理的纳米管功能化和界面工程为高性能环氧复合材料的开发提供了一种新颖、可扩展的策略。图形摘要

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来源期刊

Polymer Bulletin 化学-高分子科学

CiteScore

6.00

自引率

6.20%

发文量

审稿时长

5.5 months

期刊介绍： "Polymer Bulletin" is a comprehensive academic journal on polymer science founded in 1988. It was founded under the initiative of the late Mr. Wang Baoren, a famous Chinese chemist and educator. This journal is co-sponsored by the Chinese Chemical Society, the Institute of Chemistry, and the Chinese Academy of Sciences and is supervised by the China Association for Science and Technology. It is a core journal and is publicly distributed at home and abroad. "Polymer Bulletin" is a monthly magazine with multiple columns, including a project application guide, outlook, review, research papers, highlight reviews, polymer education and teaching, information sharing, interviews, polymer science popularization, etc. The journal is included in the CSCD Chinese Science Citation Database. It serves as the source journal for Chinese scientific and technological paper statistics and the source journal of Peking University's "Overview of Chinese Core Journals."