化工新型材料

化工新型材料 ›› 2025, Vol. 53 ›› Issue (10) : 249-255. DOI: 10.19817/j.cnki.issn1006-3536.2025.10.026

开发与应用

纤维素-PVA光致变色水凝胶的制备及性能研究

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作者信息 +

Preparation and properties of cellulose-PVA photochromic hydrogel

Zhang Fan^1,2,3, Mao Yuecheng³, Cai Zaisheng¹, Huang Xuming², Lu Shaofeng³, Liu Huijing³

Author information +

文章历史 +

Received
2024-09-11
Issue Date	Revised Date
2025-10-13	2024-09-11

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摘要

以羧甲基纤维素(CMC)、聚乙烯醇(PVA)、纳米纤维素纳米晶(CNC)、螺吡喃(SP)为原料,在碱性条件下与环氧氯丙烷(ECH)发生交联反应,制备稳定性强、透明度可调控的纤维素-PVA光致变色水凝胶(PVA-SP-CPHs),并研究了纤维素与PVA质量比对水凝胶溶胀性能、变色性能等的影响。结果表明:当纤维素∶PVA=1∶1时,PVA-SP-CPHs具有优异的结构稳定性,干燥-溶胀循环次数经12次以上仍保持良好的结构稳定性。在此基础上,对PVA-SP-CPHs的形成机理进行详细阐述。可为新型光致变色材料、水凝胶织物整理剂及智能化变色织物的开发奠定基础,在单次信息解密防伪领域有应用潜力。

Abstract

A cellulose-PVA photochromic hydrogel (PVA-SP-CPH_S) with strong stability and tunable transparency was prepared under alkaline conditions by cross-linking reaction with epichlorohydrin (ECH) using the carboxymethyl cellulose (CMC),polyethylene glycol (PVA),cellulose nanocrystals (CNC),and spiropyran (SP) as raw materials.The effects of cellulose to PVA quality ratio on the swelling properties,photochromic performance were studied.The results showed that when the cellulose∶PVA was 1∶1,PVA-SP-CPH_S had excellent structural stability,and still maintained good structural stability even after 12 cycles of drying-swelling.On this basis,the formation mechanism of PVA-SP-CPH_S was elaborated in detail.This study laid the foundation for the development of new type of photochromic materials,hydrogel fabric finishing agents and intelligent color-changing fabrics,with potential applications in the field of single information decryption and anti-counterfeiting.

关键词

纤维素 / 螺吡喃 / 光致变色 / 水凝胶 / 聚乙烯醇

Key words

cellulose / spiropyran / photochromic / hydrogel / PVA

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纤维素-PVA光致变色水凝胶的制备及性能研究[J]. 化工新型材料, 2025, 53(10): 249-255 DOI:10.19817/j.cnki.issn1006-3536.2025.10.026

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