纳米颗粒PMMA复合聚苯胺氨气传感器的研究
PDF下载 (110)刘 勇,王钰恒,简家文*.纳米颗粒PMMA复合聚苯胺氨气传感器的研究[J].宁波大学学报(理工版),2026,39(1):8-16.DOI:10.20098/j.cnki.1001-5132.2025.0405
LIU Yong,WANG Yuheng,JIAN Jiawen.Research on nanoparticle PMMA composite polyaniline ammonia gas sensor[J].Journal of Ningbo University(Natural Science & Engineering Edition),2026,39(1):8-16.DOI:10.20098/j.cnki.1001-5132.2025.0405
| Title: | Research on nanoparticle PMMA composite polyaniline ammonia gas sensor |
| 作者: | 刘 勇, 王钰恒, 简家文* |
| Author(s): | LIU Yong, WANG Yuheng, JIAN Jiawen |
| 关键词: | 氨气传感器; 聚苯胺; 纳米颗粒; 聚甲基丙烯酸甲酯 |
| Keywords: | ammonia sensor; polyaniline; nanoparticles; polymethyl methacrylate |
| 分类号: | TP212.2 |
| DOI: | 10.20098/j.cnki.1001-5132.2025.0405 |
| 文献标识码: | A |
| 摘要: | 聚苯胺（PANI）因其较好的室温氨气（NH3）敏感能力而备受关注，有机绝缘物纳米颗粒的加入可以调节其导电特性，优化其对NH3的敏感性。鉴于聚甲基丙烯酸甲酯（PMMA）和聚偏氟乙烯（PVDF）拥有相近的低导热系数，通过低温原位聚合技术，将PANI不包覆或者聚合包覆于纳米颗粒PMMA和PVDF的表面，制备出基于纯PANI、PANI/PMMA和PANI/PVDF 3种敏感材料的NH3传感器，并对比研究其性能差异，揭示PMMA和PVDF改善纯PANI性能的可行性。测试结果显示：PANI/PMMA的NH3响应性能和高温响应性能综合表现最佳，由于纳米颗粒PMMA改善了敏感材料层的表面形貌，进而提升了传感器的响应性能，PANI/PMMA对12.5×10–4% NH3表现出23.7%的响应值，比纯PANI提高13%，是PANI/PVDF的1.1倍。PANI/ PMMA的207 s和995 s，其检测限低达327×10–7%，同时有着卓越的高温稳定性，在50 ℃下的响应值稳定在17.6%，在100℃下响应波动性小且恢复性能好。 |
| Abstract: | Polyaniline (PANI) has garnered significant attention due to its excellent sensitivity to ammonia (NH3) at room temperature. By incorporating organic insulating nanoparticles, its conductivity can be modulated, enhancing its sensitivity to NH3. Given the fact that polymethyl methacrylate (PMMA) and polyvinylidene fluoride (PVDF) have similar low thermal conductivities, through low-temperature in-situ polymerization technology, PANI is either not coated or polymerically coated on the surfaces of nanoparticle PMMA and PVDF. Consequently, NH3 sensors based on three sensitive materials, namely pure PANI, PANI/PMMA and PANI/PVDF, are fabricated, with their performance differences being compared and studied to reveal the feasibility of PMMA and PVDF in improving the performance of pure PANI. The test results show that, the comprehensive performance of NH3 response and high-temperature response of PANI/PMMA is the best. Due to the improvement of the surface morphology of the sensitive material layer brought by nanoparticle PMMA, the response performance of the sensor is enhanced. PANI/PMMA shows a response value of 23.7% to 12.5×10–4% NH3, which is 13% higher than that of pure PANI. It is 1.1 times that of PANI/PVDF. The response time and recovery time of PANI/PMMA are 207 s and 995 s respectively. Its detection limit is as low as 327×10–7%. Meanwhile, it has excellent high-temperature stability. The response value is stable at 17.6% at 50℃, and the response fluctuation is small and the recovery performance is high at 100℃. |
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| 备注/Memo: | 收稿日期：2025-04-09 宁波大学学报（理工版）网址：http://journallg.nbu.edu.cn/ 基金项目：国家自然科学基金（61971251）；浙江省基础公益研究计划（LGG22F010017）；宁波市重点研发计划（2022Z093，2022Z092） 第一作者：刘 勇，硕士研究生，主要研究方向为聚苯胺复合物氨敏性能优化。E-mail: lhs1837988346@gmail.com *通信作者：简家文，教授，主要研究方向为气体传感器及仪器仪表。E-mail: jianjiawen@nbu.edu.cn 宁波大学学报（理工版）网址：http://journallg.nbu.edu.cn/ |
