Soluble Polyimide Coated UHMWPE Fibers with Multiple Property Enhancements: Surface Activity, Tensile Strength, Heat Resistance, Acid Resistance, and Erasability.

IF 4.2 3区 化学 Q2 POLYMER SCIENCE Macromolecular Rapid Communications Pub Date : 2024-10-10 DOI:10.1002/marc.202400682
Lijie Yin, Wei Li, Yichen Lu, Liang He, Ming Tian, Nanying Ning, Wencai Wang
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Abstract

Ultrahigh molecular weight polyethylene (UHMWPE) fibers possess excellent mechanical properties, yet their applications are severely limited by surface inertness and low melting points. To enhance surface activity and temperature resistance, soluble polyimide (PI) is applied to the surface of UHMWPE fibers. A mussel-inspired biomimetic polycatechol/polyamine (PA) coating is initially constructed on the UHMWPE fiber surface by oxidative self-polymerization, serving as a secondary reaction platform. Subsequently, multifunctional UHMWPE-PA-PI fibers are prepared by depositing soluble PI on the fiber surface via impregnation. The PA and PI layers are firmly bonded by hydrogen bonding interactions and physical adhesion. The results show that the PI-coated UHMWPE fiber surface exhibits enhanced chemical activity, hydrophilicity, and thermal stability, with an increased thermal decomposition temperature of approximately 30 °C. Compared to pristine UHMWPE, the breaking force of UHMWPE-PA-PI fibers increases by 14.9%, and the interfacial adhesion strength between the fiber and rubber improves by 65.5%. The PI coatings also provide thermal insulation, acid resistance, and erasability functionalities. This modification strategy is highly efficient, simple, and less damaging, offering a novel solution to address UHMWPE fibers' surface inertness and temperature intolerance.

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可溶性聚酰亚胺涂层超高分子量聚乙烯纤维可增强多种性能:表面活性、拉伸强度、耐热性、耐酸性和可擦除性。
超高分子量聚乙烯(UHMWPE)纤维具有优异的机械性能,但其应用却受到表面惰性和低熔点的严重限制。为了提高表面活性和耐温性,可溶性聚酰亚胺(PI)被应用于超高分子量聚乙烯纤维的表面。受贻贝启发的仿生物聚邻苯二酚/聚胺(PA)涂层最初是通过氧化自聚合作用在超高分子量聚乙烯纤维表面构建的,作为二级反应平台。随后,通过浸渍法在纤维表面沉积可溶性 PI,制备出多功能 UHMWPE-PA-PI 纤维。PA 层和 PI 层通过氢键相互作用和物理粘附牢固地结合在一起。结果表明,涂有 PI 的超高分子量聚乙烯纤维表面具有更高的化学活性、亲水性和热稳定性,热分解温度提高了约 30 °C。与原始 UHMWPE 相比,UHMWPE-PA-PI 纤维的断裂力提高了 14.9%,纤维与橡胶之间的界面粘附强度提高了 65.5%。PI 涂层还具有隔热、耐酸和可擦除功能。这种改性策略高效、简单、损伤小,为解决超高分子量聚乙烯纤维的表面惰性和温度不耐受性问题提供了一种新的解决方案。
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来源期刊
Macromolecular Rapid Communications
Macromolecular Rapid Communications 工程技术-高分子科学
CiteScore
7.70
自引率
6.50%
发文量
477
审稿时长
1.4 months
期刊介绍: Macromolecular Rapid Communications publishes original research in polymer science, ranging from chemistry and physics of polymers to polymers in materials science and life sciences.
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