中国塑料2026，Vol.40Issue(3)：17-23,7.DOI:10.19491/j.issn.1001-9278.2026.03.004
光致变色聚乙烯醇/聚(N-羟甲基丙烯酰胺)互穿网络水凝胶的研究
Study on photochromic polyvinyl alcohol/poly(n-hydroxymethyl acrylamide)interpenetrating network hydrogels
摘要
Abstract
This study employed a dry-swelling method to fabricate a polyvinyl alcohol(PVA)/poly(N-hydroxymethyl acrylamide)(PNHMA)interpenetrating network hydrogel,denoted as V-PNₓM50.Ammonium molybdate(Mo7)was subsequently incorporated into the hydrogel to yield a photochromic material exhibiting high mechanical strength and tun-able light-responsive coloration.The photochromic properties,fading behavior,hydrochromic performance,and poten-tial for information storage applications were systematically investigated.The results indicate that the hydrogel achieved a tensile strength of up to 18 MPa and displayed temperature-dependent photochromism.Lowering the temperature shifts the light-induced color from blue-green to yellow-green or yellow.Following photochromic activation,the V-PNₓM50 hydrogel exhibits a"three-stage"sequential hydrochromic process:"fast fading → slow color change → prolonged fad-ing."By adjusting the NHMA content,both the duration and color intensity of each hydrochromic stage could be con-trolled,with underwater color retention lasting up to 18 days.Moreover,the hydrogel enables high-resolution"photo-printing",demonstrating promising potential as a material for optical information storage.关键词
智能凝胶/光致变色/高强度/温度敏感Key words
smart gel/photochromic/high strength/thermosensitive分类
化学化工引用本文复制引用
徐元昊,姜梦珊,庾光忠,祖雷,刘洋,汪晓东,连慧琴..光致变色聚乙烯醇/聚(N-羟甲基丙烯酰胺)互穿网络水凝胶的研究[J].中国塑料,2026,40(3):17-23,7.基金项目
国家自然科学基金(51203012、51573021) （51203012、51573021）
北京市自然科学基金(2162015) （2162015）
大学生研究训练项目(2016J00158、2023J00057、2023J00153) （2016J00158、2023J00057、2023J00153）
