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摘要
光致变色系统已被广泛用于视觉信息存储和紫外-红外光检测,但在便携性和反应灵敏度方面还需要改进。以十二烷基二甲基甜菜碱(BS-12)、丙烯酰胺(AAM)等为原料,钼酸铵为变色结构单元,采用一锅法制备了具有快速响应变色行为的十二烷基二甲基甜菜碱/聚丙烯酰胺-钼酸铵(BS-12/PAAm-Mo7)光致变色水凝胶,通过傅里叶变换红外光谱仪、扫描电子显微镜对水凝胶的结构和形貌进行了分析,考察了紫外光波长和照射时间、温度、变色结构单元含量等对水凝胶变色性能的影响。结果表明,制备的水凝胶具有良好的光致变色性能,可以实现从无色到蓝色的快速反应,具有良好的可逆性和稳定性。
Abstract
Photochromic systems have been widely used for visual information storage and ultraviolet-infrared (UV-IR) light detection,but they need to be improved in terms of portability and response sensitivity.Using dodecyldimethyl betaine (BS-12) and acrylamide (AAM) as raw materials and ammonium molybdate as the color-changing structural unit,dodecyldimethyl betaine/polyacrylamide-ammonium molybdate (BS-12/PAAm-Mo7) photochromic hydrogels with fast-responsive colour-changing behaviours were prepared by a one-pot method.The structure and morphology of the hydrogels were analysed by Fourier transform infrared spectroscopy and scanning electron microscopy,and the effects of UV wavelength and irradiation time,temperature,and the content of color-changing structural units on the photochromic performance of the hydrogels were investigated.The results showed that the prepared hydrogels had good photochromic properties,and could achieve rapid reaction from colourless to blue,with good reversibility and stability.
关键词
水凝胶
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光致变色
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钼酸铵
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丙烯酰胺
Key words
hydrogel
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photochromic
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ammonium molybdate
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acrylamide
基于BS-12/丙烯酰胺水凝胶的光致变色性能研究[J].
化工新型材料, 2024, 52(10): 108-112 DOI:10.19817/j.cnki.issn1006-3536.2024.10.015
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基金资助
国家先进印染技术创新中心(ZJ2021A09)
