PANI/PAVC复合材料气敏性能的研究  

Study on gas-sensing properties of composite material PANI/PAVC

作　　者：赵慧灵[1] 张荣[2] 郑建旭[1] 杨朋[1] 曹运兵[1] 蒋登高[1] 

机构地区：[1]郑州大学化工与能源学院,河南郑州450001 [2]上海化工研究院,上海200062

出　　处：《现代化工》2010年第S2期207-210,212,共5页Modern Chemical Industry

摘　　要：以聚乙酸乙烯酯(PVAC)为掺杂剂,过硫酸铵(APS)为氧化剂,十二烷基苯磺酸(DBSA)为乳化剂,制备出稳定的聚苯胺/聚乙酸乙烯酯(PANI/PVAC)乳液状态的复合材料。经检测表明该复合材料稳定性好,在室温下对氨气有很好的灵敏度。利用单因素变量法系统考察了不同因素对乳化液稳定性及复合材料气敏性能的影响,并优化出最佳工艺条件:n(DBSA)∶n(An)=1.0;n(APS)∶n(An)=1.0;n(VAC)∶n(An)=1.0;聚合时间6 h;反应温度20℃,对含量1×10-3氨气的响应时间为300 s,恢复时间为240 s,灵敏度为56.082,适宜作为室温下的氨气敏感材料。利用红外光谱对该复合材料进行了结构表征。PANI/PAVC composite is synthesized with polyvinyl acetate(PAVC) as dopant,ammonium peroxydisulfate(APS) as oxidant,dodecylbenzenesulfonic acid(DBSA) and ammonium persulfate(APS) as initiator by one-step emulsion polymerization.The impact of different factors on the stability of PANI/PAVC emulsion and gas sensing properties of composite is studied by controlling the variables.The optimum technology parameters are obtained:n(DBSA)/n(An)=1.0;n(APS)/n(An)=1.0;n(VAC)/n(An)=1.0;polymerization time of 6 h;reaction temperature of 20℃.In the condition of 1 000 ppm ammonia,composite materials has the sensitivity of 56.082 with the response time of 300 s and recovery time for 240 s,at the moment,it is suitable for the ammonia sensitive materials at room temperature.The structure of PAN/PVAC is characterized by Infra-red spectrum(IR).

关 键 词：聚苯胺 聚乙酸乙烯酯 气敏性 

分 类 号：TQ320.7[化学工程—合成树脂塑料工业]