原位聚合制备PEDOT-PSS/PVA电磁波吸收功能复合导电织物  

PEDOT-PSS/PVA Composite Conductive Textile with Electromagnetic Wave Absorption Properties Prepared by in situ Polymerization

作　　者：李昕[1] 许英涛[1] 郑一平[1] 张焱[1] 李从举[1] 陈光明[2] 

机构地区：[1]北京服装学院材料科学与工程学院,服装材料研究开发与评价北京市重点实验室,北京100029 [2]北京分子科学国家实验室,中国科学院化学研究所,北京100190

出　　处：《高分子学报》2017年第4期661-668,共8页Acta Polymerica Sinica

基　　金：国家自然科学基金(基金号20974005,21544002);北京市教委科技重点项目(项目号KZ201410012017)资助

摘　　要：在自行织造的聚(3,4-乙烯二氧噻吩)-聚对苯乙烯磺酸钠/聚乙烯醇(PEDOT-PSS/PVA)导电织物表面,通过原位聚合法生成了致密的PEDOT-PSS导电聚合物覆盖层,所得织物称之为in situ PEDOT-PSS/PVA复合导电织物.研究发现,在优化的合成条件下,in situ PEDOT-PSS/PVA复合导电织物具有优异的导电性能,其表面电阻最低可达2?/cm^2.电磁屏蔽性能测试结果表明,单层in situ PEDOT-PSS/PVA导电复合织物的电磁屏蔽效能可达12 dB左右,屏蔽率约为75%;在4~18 GHz的范围内,其电磁波反射率大部分都在-5^-10dB之间,可吸收75%~90%的电磁波,基本达到了军事吸波材料的要求.On the surface of self-made PEDOT-PSS/PVA conductive textiles, compact and uniform PEDOT-PSS conductive coating is formed by in situ polymerization, and the resulted composite conductive textile is called in situ PEDOT-PSS/PVA. The synthesis conditions of the in situ polymerization are optimized. The morphology, structure and properties of the in situ PEDOT-PSS/PVA are measured. It is shown that the optimum molar ration of the reactant is [PSS]：[FeC13]：[EDOT] = 2.1：1.4：1 with a reaction time of 10 h. The resulted in situ PEDOT-PSS/PVA has excellent conductive property with a low surface resistance of 2 Ω/口 and electron conductivity of 360 S/cm under the optimized synthesis condition, which may be resulted from the synergistic action between PEDOT-PSS inside the fiber and the surface coating, forming the connected and effective conductive path to facilitate the electron transport. FTIR analysis indicates that there exists strong bonding force between base textile and PEDOT-PSS coating. Besides, the in situ PEDOT-PSS/PVA has strong near infrared shielding capability. The XPS measurements show that the sulfur content of the in situ PEDOT-PSS/PVA is much higher than that of the PEDOT-PSS/PVA, implying a higher PEDOT-PSS conductive component, which is also responsible for its low surface resistance, Moreover, the electromagnetic shielding measurements demonstrate that the electromagnetic shielding effectiveness of the in situ PEDOT-PSS/PVA can reach to 12 dB with a shielding efficiency of 75% compared with the 0 dB of PEDOT-PSS/PVA. In the range of 4 - 18 GHz, the most reflectivity of electromagnetic wave is between -5 and -10 dB, which can absorb 75% - 90% electromagnetic wave. Furthermore, the in situ PEDOT-PSS/PVA composite conductive textile presents a higher stability, good fastness to washing and acid resistance. The results indicate that the in situ polymerization is an effective method to improve the conductive property of PEDOT-PSS/PVA conductive textile, and the resulted in situ PEDOT- PSS/PVA com

关 键 词：PEDOT-PSS 复合导电织物 原位聚合 电磁波吸收功能 

分 类 号：TS106[轻工技术与工程—纺织工程]