Coaxially electrospun PCDA-ZnO nanofibrous membranes with UV protection for high-temperature reversible thermochromism and colorimetric response to lactic acid

IF 7.7 2区材料科学 Q1 MATERIALS SCIENCE, COMPOSITES

Composites Communications Pub Date : 2025-08-11 DOI:10.1016/j.coco.2025.102557

Xidi Liu , Pan Wang , Yang Xiang , Zixin Zhao , Haoqian Guo , Boli Yang , Kui Li , Ying Li , Zhongxiang Bai , Xulin Yang , Kun Jia

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Abstract

Various colorimetric sensing materials have been developed based on polydiacetylene (PDA), however, their sensing performance is limited by conventional low-temperature responsiveness and irreversibility. This study integrates a conventional PDA monomer, 10, 12-pentacosadiynoic acid (PCDA), with ZnO to fabricate core-shell structural PCDA-ZnO nanofibrous membranes by coaxial electrospinning technology. Here, PCDA-ZnO membranes demonstrated a thermochromic range of 100–210 °C, with reversibility observed below 170 °C. Additionally, the PCDA in the core is protected from short-term ultraviolet (UV) exposure by the inclusion of UV absorbers, ZnO, in the shell layer, thus preventing discoloration during storage. The coordination bond between polymerized PCDA (poly(PCDA)) and ZnO endows the nanofibrous membranes with the response capability to lactic acid solutions. The sensitivity of PCDA-ZnO membranes to lactic acid solutions fluctuates according to the ZnO concentration. Special high-performance polyarylene ether nitrile (PEN) was employed as the substrate material for PCDA to fabricated shell component, which enhances the stability of nanofibrous membranes under high-temperature, and corrosion, while also regulating the maximum reversible thermochromic temperature of the PCDA-ZnO membrane. The developed core-shell PCDA-ZnO nanofibrous membranes enhance the colorimetric response efficacy of PDA-based colorimetric sensors.

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同轴静电纺PCDA-ZnO纳米纤维膜的高温可逆热致变色及对乳酸的比色响应

基于聚二乙炔（PDA）的比色传感材料已被开发出来，但其传感性能受到传统的低温响应性和不可逆性的限制。本研究将传统的PDA单体10,12 -五甲酸（PCDA）与ZnO结合，采用同轴静电纺丝技术制备了核壳结构的PCDA-ZnO纳米纤维膜。在这里，PCDA-ZnO薄膜表现出100-210°C的热变色范围，在170°C以下观察到可逆性。此外，核心中的PCDA通过在外壳层中包含紫外线吸收剂氧化锌来保护其免受短期紫外线（UV）照射，从而防止在储存过程中变色。聚合PCDA（聚（PCDA））与ZnO之间的配位键使纳米纤维膜具有对乳酸溶液的响应能力。PCDA-ZnO膜对乳酸溶液的敏感性随ZnO浓度的变化而波动。采用特殊的高性能聚丙烯腈（PEN）作为PCDA的衬底材料制备壳组分，提高了PCDA- zno膜在高温和腐蚀下的稳定性，同时也调节了PCDA- zno膜的最高可逆热致变色温度。所制备的核壳型PCDA-ZnO纳米纤维膜提高了基于pda的比色传感器的比色响应效率。

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来源期刊

Composites Communications Materials Science-Ceramics and Composites

CiteScore

12.10

自引率

10.00%

发文量

340

审稿时长

36 days

期刊介绍： Composites Communications (Compos. Commun.) is a peer-reviewed journal publishing short communications and letters on the latest advances in composites science and technology. With a rapid review and publication process, its goal is to disseminate new knowledge promptly within the composites community. The journal welcomes manuscripts presenting creative concepts and new findings in design, state-of-the-art approaches in processing, synthesis, characterization, and mechanics modeling. In addition to traditional fiber-/particulate-reinforced engineering composites, it encourages submissions on composites with exceptional physical, mechanical, and fracture properties, as well as those with unique functions and significant application potential. This includes biomimetic and bio-inspired composites for biomedical applications, functional nano-composites for thermal management and energy applications, and composites designed for extreme service environments.