Page 56 - 《精细化工》2020年第5期
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第 37 卷第 5 期                             精   细   化   工                                  Vol.37, No.5
             202 0 年 5 月                             FINE CHEMICALS                                 May    2020


              功能材料
                      PEDOT:PSS 导电自支撑薄膜的合成与表征



                                                          1
                                             1
                                                                                   1*
                                                                       2
                                    马小涵 ,胡云平 ,言驿鹏 ,宾月珍
                 (1.  大连理工大学  化工学院  高分子材料系,辽宁  大连    116024;2.  湘潭中微新材料有限公司,湖南  湘
                 潭  411100)
                 摘要:以 3,4-乙烯二氧噻吩(EDOT)为原料,聚对苯乙烯磺酸钠(PSS-Na)为分散剂和掺杂剂,通过化学氧化
                 合成法在水体系中聚合制备了聚(3,4-乙烯二氧噻吩):聚苯乙烯磺酸(PEDOT:PSS)悬浮液,通过真空抽滤法制备
                 了 PEDOT:PSS 自支撑柔性导电薄膜。通过 FTIR、UV-Vis 对聚合产物结构进行了表征与确证,通过四探针电导
                 率测试、SEM、拉伸断裂强度测试对 PEDOT:PSS 薄膜的导电性、微观形貌与力学性能进行了表征。结果表明,
                 成功制备了 PEDOT:PSS 目标产物,在氧化剂过硫酸铵与单体 EDOT 物质的量比为 0.875 时达到最佳电导率
                 (19.19 S/cm)。自支撑薄膜厚度约 18  μm,在 25  ℃,40%~60%相对湿度范围内拉伸强度达到 45~60  MPa,具
                 有良好的导电性与机械性能。
                 关键词:PEDOT:PSS;导电高分子;真空抽滤;自支撑薄膜;功能材料
                 中图分类号:TM24;TB324      文献标识码:A      文章编号:1003-5214 (2020) 05-0906-06


                    Synthesis and characterization of poly(3,4-ethylenedioxythiophene):
                             poly(styrenesulfonate) free-standing conductive film


                                                                                     1*
                                              1
                                                           1
                                                                        2
                                  MA Xiaohan , HU Yunping , YAN Yipeng , BIN Yuezhen
                 (1. Department of Polymer Science & Materials, School of Chemical Engineering, Dalian University of Technology,
                 Dalian 116024, Liaoning, China; 2. Xiangtan Zhongwei Nanotech Co., Ltd., Xiangtan 411100, Hunan, China)
                 Abstract: Poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) suspension was prepared
                 by chemical oxidation synthesis in water system using 3,4-ethylenedioxythiophene (EDOT) as monomer,
                 poly(sodium-p-styrenesulfonate)  (PSS-Na)  as  dispersant  and  doping  agent.  PEDOT:PSS  free-standing
                 flexible conductive film was prepared by vacuum filtration. The structure of the polymerized product was
                 characterized  by  FTIR  and  UV-Vis.  The  conductivity,  morphology  and  mechanical  properties  of
                 PEDOT:PSS  film  were  characterized  by  four-probe  conductivity  test,  SEM  and  tensile  strength  test,
                 respectively.  The  results  showed  that  PEDOT:PSS  was  successfully  prepared.  The  prepared  film
                 achieved an optimal conductivity of 19.19 S/cm when the mole ratio of oxidant (NH 4) 2S 2O 8  to EDOT
                 monomer was 0.875. The thickness of the free-standing film was about 18 μm. The tensile strength of the
                 free-standing film reached 45~60 MPa at 25  ℃  and in the range from 40% to 60% relative humidity.
                 This indicated that the prepared PEDOT:PSS free-standing film possessed both good conductivity and
                 mechanical properties.
                 Key words: PEDOT:PSS; conductive polymer; vacuum filtration; free-standing film;functional materials


                 随着个人信息平台与物联网的发展,柔性、可                          接安装在人类皮肤上等,输出物理或化学信号,从
            穿戴电子器件需求的增长已经渗透到现代电子工                              而实现疾病诊断、健康监测或身体运动监测等方面
            业、材料工业和诸多相关多学科领域中,其要求传                             的功能   [1-3] 。柔性可穿戴电子器件的发展对于推动中
            感器能够附着于织物表面,或使用胶黏带、皮带直                             国生命健康、医疗卫生、人工智能等方面的进一步


                 收稿日期:2019-11-18;  定用日期:2020-01-14; DOI: 10.13550/j.jxhg.20191088
                 基金项目:国家自然科学基金(21374014)
                 作者简介:马小涵(1994—),女,硕士生,E-mail:570950821@qq.com。联系人:宾月珍(1966—),女,教授,E-mail:binyz@dlut.edu.cn。
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