新型聚合物凝胶全息传感器及其溶液pH值响应特性  

Holographic Sensor Based on Novel Polymer Hydrogel and It’s Sensing Performance for pH of Solution

作　　者：杜睿 于丹[1] 王施婵 刘丽丽[1] 顾永俊 孟祥开 DU Rui;YU Dan;WANG Shi-chan;LIU Li-li;GU Yong-jun;MENG Xiang-kai(College of Science,Tianjin University of Technology,Tianjin 300384,China;College of Science,Civil Aviation University of China,Tianjin 300300,China)

机构地区：[1]天津理工大学理学院,天津300384 [2]中国民航大学理学院,天津300300

出　　处：《仪表技术与传感器》2019年第4期5-9,共5页Instrument Technique and Sensor

基　　金：天津市高等学校自然科学研究项目(2017KJ238);天津理工大学大学生创新创业训练计划项目(201710060011)

摘　　要：基于聚合物全息体光栅的环境传感装置工艺简单、成本低廉、传感现象显著、响应性能优异,近些年受到国内外广泛关注。记录于光致聚合物内的全息体光栅在外部环境改变时,能够引起光栅衍射光谱特征的显著变化,并将随之导致光谱峰值波长的偏移,从而应用全息光栅传感环境特征成为可能。然而基于丙烯酰胺光致聚合物的全息传感器由水溶性材料制成,因此对水溶液及其特征传感无法实现。为此研制了一种新型聚合物凝胶材料,该材料适用于对水溶液的传感。将其放置于水中,通过交联功能化单体,能够响应溶液酸碱度。实验测试了不同pH值情况下传感器的光谱偏移特征,并测试了不同厚度聚合物材料传感响应时间。最后全息溶液传感器的可逆性也得到了实验证实。实验结果为深入分析传感器的传感机制提供了实验基础,同时为改善全息传感器实用能力提供了重要手段。The environmental sensing device based on polymer holographic grating has received extensive attention at home and abroad in recent years due to its simple process,low cost,remarkable sensing phenomenon and excellent response performance.When the external environment changes,the holographic grating recorded in the photoinduced polymer can cause significant changes in the diffraction characteristics of the grating,which will lead to the shift of the peak wavelength of the spectrum.Therefore,it is possible to apply holographic grating sensing environment characteristics.However,the holographic sensor based on acrylamide photopolymer is made of water-soluble material,so the water solution and its characteristic sensor can't be observed.Therefore,we developed a new type of polymer gel material,which is suitable for sensing water solutions.It can be placed in water and crosslinked by functionalized monomers to respond to the pH value of the solution.The spectrum characteristics of sensors with various pH values were tested,and the response time of polymer materials with different thickness was tested.Finally,the reversibility of the holographic solution sensor was also experimentally confirmed.The experimental results provide an experimental basis for in-depth analysis of the sensor sensing mechanism and an important means to improve the practical ability of the holographic sensor.

关 键 词：全息光学装置 聚合物 全息传感器 溶液 

分 类 号：O438[机械工程—光学工程]