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通过含有KI的聚乙二醇(PEG)与PET熔融共混制得导电聚合物,其在常温下电阻率可达到105Ω.cm左右,电阻率随温度升高而降低,具有离子导电的特性.通过FTIR、DSC和偏光显微镜研究其形态结构和热性能,结果表明该导电聚合物中PEG和PET主要是物理共混,晶区不相容,非晶区具有部分相容性,熔融降温发生相分离,KI/PEG形成连续的一相.该导电聚合物作为导电母粒与PET切片以不同的配比共混纺丝制备出颜色较浅的导电PET纤维.当纤维中导电母粒的质量分数超过10 wt%时,制得的导电纤维的电阻率为106Ω.cm左右,具有较好的耐水洗性.该导电纤维具有双连续相结构,连续的KI/PEG导电相因形成导电通路使纤维具有导电性能;连续的PET相使纤维基本保持PET纤维的力学性能.
The conductive polymer is prepared by melt-blending polyethylene glycol (PEG) containing KI with PET, which has a resistivity of about 105 Ω · cm at room temperature. The resistivity decreases with increasing temperature and has ion conductivity characteristics. The morphology and thermal properties of the polymers were characterized by FTIR, DSC and Polarization Microscopy. The results showed that the PEG and PET in the conductive polymer were mainly physically blended, the crystal regions were incompatible, the amorphous regions were partially compatible, and the melting and cooling phases Separation, KI / PEG form a continuous one phase of the conductive polymer as a conductive masterbatch and PET chips were blended in different proportions to prepare a lighter color conductive PET fibers.When the mass fraction of conductive masterbatch in the fiber exceeds 10wt%, the obtained conductive fiber has a resistivity of about 106Ω · cm, and has good water washing resistance. The conductive fiber has a bicontinuous phase structure, and the continuous KI / PEG conductive phase causes the fiber to have a conductive path Conductivity; continuous PET phase of the fiber to maintain the basic PET fiber mechanical properties.