聚（3，4-亚乙二氧基噻吩）-聚（苯乙烯磺酸）/聚乙烯醇半互穿网络聚合物的制备及其性能

doi:10.19894/j.issn.1000-0518.240374

摘要/Abstract

摘要：

采用线性聚3，4-乙烯二氧噻吩/聚苯乙烯磺酸（PEDOT∶PSS）与交联聚乙烯醇（PVA），以不同质量比制备了系列半互穿网络结构的导电聚合物PEDOT∶PSS/PVA。采用傅里叶变换红外光谱（FT-IR）、拉曼光谱、X射线衍射（XRD）、热失重分析（TGA）、四探针测试和电子式万能试验机对导电聚合物进行性能表征。结果表明，PVA与PEDOT∶PSS能够在一定范围内良好相容，通过氢键作用形成均一形貌，随着PVA质量分数的增大，PEDOT∶PSS/PVA会发生相反转，当PVA质量分数为40%时，PEDOT∶PSS/PVA电导率为1.85 S/m，其拉伸强度达到6.83 MPa，断裂伸长率为22.89%，PEDOT∶PSS/PVA可以代替导线点亮小灯泡，且电阻随温度变化的幅度较大，对温度变化敏感。

关键词: 聚3, 4-乙烯二氧噻吩/聚苯乙烯磺酸, 聚乙烯醇, 导电凝胶

Abstract:

A series of conductive polymers poly（3，4-ethylenedioxythiophene）-poly（styrenesulfonate）/polyvinyl alcohol （PEDOT∶PSS/PVA） with semi-interpenetrating network structure were prepared by using linear poly（3，4-ethylenedioxythiophene）/polystyrene sulfonic acid （PEDOT∶PSS） and cross-linked polyvinyl alcohol （PVA） with different mass ratios. The properties of the conductive polymers were characterized by Fourier transform infrared spectrometer （FT-IR）， Raman spectrometer， X-ray diffractometer （XRD）， thermogravimetric analyzer， four-probe tester and electronic universal testing machine. The results show that PVA and PEDOT∶PSS can be well compatible in a certain range， and form a uniform morphology through hydrogen bonding. With the increase of PVA mass fraction， PEDOT∶PSS/PVA will reverse. When the mass fraction of PVA is 40%， the conductivity of PEDOT∶PSS/PVA is 1.85 S/m， the tensile strength is 16.83 MPa， and the elongation at break is 22.89%. PEDOT∶PSS/PVA can replace the wire to light a small bulb， and the resistance varies greatly with temperature， which is sensitive to temperature change.

Key words: Poly（3, 4-ethylenedioxythiophene）/polystyrene sulfonic acid, Polyvinyl alcohol, Electrographic gel

中图分类号:

O631

吉汪尧, 菅晓霞, 韩佩瑶, 张翔. 聚（3，4-亚乙二氧基噻吩）-聚（苯乙烯磺酸）/聚乙烯醇半互穿网络聚合物的制备及其性能[J]. 应用化学, 2025, 42(11): 1479-1490.

Wang-Yao JI, Xiao-Xia JIAN, Pei-Yao HAN, Xiang ZHANG. Preparation and Properties of Poly（3，4-ethylenedioxythiophene）- Poly（styrenesulfonate）/Polyvinyl Alcohol Semi-Interpenetrating Polymer Network[J]. Chinese Journal of Applied Chemistry, 2025, 42(11): 1479-1490.

图/表 12

图1 PEDOT∶PSS/PVA半互穿网络聚合物的结构示意图

Fig.1 Structure diagram of PEDOT∶PSS/PVA semi-interpenetrating polymer network

表1 PEDOT∶PSS/PVA的配方表

Table 1 Formula table of PEDOT∶PSS/PVA

Sample	m（PEDOT∶PSS）/m（PVA）	w（PVA）/%
PEDOT∶PSS/PVA-1	10/0	0
PEDOT∶PSS/PVA-2	10/4.31	30
PEDOT∶PSS/PVA-3	10/6.67	40
PEDOT∶PSS/PVA-4	10/10	50
PEDOT∶PSS/PVA-5	10/15	60

图2 PEDOT∶PSS/PVA的FT-IR谱图

Fig.2 FT-IR spectra of PEDOT∶PSS/PVA

图3 PEDOT∶PSS/PVA的拉曼谱图

Fig.3 Raman spectra of PEDOT∶PSS/PVA

图4 PEDOT∶PSS/PVA的XRD谱图

Fig.4 XRD patterns of PEDOT∶PSS/PVA

图5 PVA质量分数对PEDOT∶PSS/PVA的电导率的影响

Fig.5 The effect of the mass fraction of PVA on the conductivity of PEDOT∶PSS/PVA

图6 PEDOT∶PSS/PVA半互穿聚合物网络的SEM图A. PEDOT∶PSS/PVA-1; B. PEDOT∶PSS/PVA-2; C. PEDOT∶PSS/PVA-3; D. PEDOT∶PSS/PVA-4; E. PEDOT∶PSS/PVA-5

Fig.6 SEM images of PEDOT∶PSS/PVA semi-interpenetrating polymer network

图7 PEDOT∶PSS/PVA的力学性能

Fig.7 Mechanical properties of PEDOT∶PSS/PVA

图8 （A）PEDOT∶PSS/PVA的热重曲线；（B）PEDOT∶PSS/PVA的热重微分曲线

Fig.8 （A） Thermogravimetry curves of PEDOT∶PSS/PVA；（B） Derivative thermogravimetry curves of PEDOT∶PSS/PVA

图9 PEDOT∶PSS/PVA的DSC曲线

Fig.9 DSC of PEDOT∶PSS/PVA

图10 PEDOT∶PSS/PVA-3的电阻与温度关系图

Fig.10 Relationship between resistance and temperature of PEDOT∶PSS/PVA

图11 PEDOT∶PSS/PVA-3的TCR与温度关系图

Fig.11 Relationship between the temperature coefficient of resistance and temperature of PEDOR∶PSS/PVA-3

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