What question did this study set out to answer?

The study aims to understand the mechanisms by which swelling and crosslinking influence the microstructural and mechanical properties of SA/PAAS hydrogel fibers.

March 4, 2026Zhongguo kexue. Wulixue Lixue Tianwenxue0 citations

Swelling-Crosslinking-Driven Microstructural and Mechanical Evolution in SA/PAAS Hydrogel Fibers

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SJShan JinUniversity of Electronic Science and Technology of China XLXia LiuSoutheast University WRWei RaoJianghan University

Key Points

The study aims to understand the mechanisms by which swelling and crosslinking influence the microstructural and mechanical properties of SA/PAAS hydrogel fibers.
Created SA/PAAS composite hydrogel fibers using wet-spinning technique.
Investigated the competition between swelling and crosslinking mechanisms.
Analyzed the evolution of microstructure and mechanical properties throughout the process.
Fibers underwent a three-phase evolution from a heterogeneous structure to a uniform, dense dual-network.
Achieved maximum strength of 3.48 MPa and toughness of 1.83 MJ/m3.
Demonstrated a notable increase in strength and toughness, along with high energy dissipation above 66%.

Abstract

本文通过湿纺法制备了海藻酸钠/聚丙烯酸钠（SA/PAAS）复合水凝胶纤维，研究了溶胀与交联竞争机制对其微结构及力学性能的调控作用。结果表明，该竞争机制驱动纤维经历表面交联主导-内部溶胀塑化-网络均匀化致密的三阶段演变，从异质核壳结构逐步发展为均匀致密的双网络离子交联结构；伴随这一过程，纤维的最大强度提升至3.48 MPa、韧性达1.83 MJ/m3，实现了强度与韧性的协同提升，并表现出显著的应变率敏感性与高阻尼性能（能量耗散系数＞66%）。本研究揭示了“溶胀/交联竞争-结构演化-性能输出”的内在构效关系，为设计高性能生物基纤维提供了理论依据。

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Cite This Study

Jin et al. (2026) studied this question.

synapsesocial.com/papers/69a7cd6ed48f933b5eed9d14 https://doi.org/10.1360/sspma-2025-0651

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March 4, 2026Zhongguo kexue. Wulixue Lixue Tianwenxue0 citations

Swelling-Crosslinking-Driven Microstructural and Mechanical Evolution in SA/PAAS Hydrogel Fibers

View Full Paper

SJShan JinUniversity of Electronic Science and Technology of China XLXia LiuSoutheast University WRWei RaoJianghan University

Key Points

The study aims to understand the mechanisms by which swelling and crosslinking influence the microstructural and mechanical properties of SA/PAAS hydrogel fibers.
Created SA/PAAS composite hydrogel fibers using wet-spinning technique.
Investigated the competition between swelling and crosslinking mechanisms.
Analyzed the evolution of microstructure and mechanical properties throughout the process.
Fibers underwent a three-phase evolution from a heterogeneous structure to a uniform, dense dual-network.
Achieved maximum strength of 3.48 MPa and toughness of 1.83 MJ/m3.
Demonstrated a notable increase in strength and toughness, along with high energy dissipation above 66%.

Abstract

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Cite This Study

Jin et al. (2026) studied this question.

synapsesocial.com/papers/69a7cd6ed48f933b5eed9d14 https://doi.org/10.1360/sspma-2025-0651

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