【摘要】： 聚3,4-乙烯二氧噻吩在空氣中有較好的穩(wěn)定性,并且具有較高的電導(dǎo)率;聚苯胺是一種典型的導(dǎo)電聚合物,具有高電導(dǎo)率,可摻雜并且具有較好的環(huán)境穩(wěn)定性,易于合成以及成本低等優(yōu)點(diǎn)。本課題分別通過(guò)苯胺和噻吩對(duì)真絲改性,采用吸附聚合的方法,制備導(dǎo)電真絲纖維。 通過(guò)對(duì)影響因素的逐個(gè)優(yōu)化,得出了噻吩改善真絲最佳工藝條件為:溫度為70℃,pH=6,單體濃度0. 3mol/L,反應(yīng)時(shí)間為12h。在此工藝條件下,得到了真絲增重率高達(dá)70%的,體積比電阻達(dá)到三個(gè)數(shù)量級(jí)的真絲纖維。 用苯胺改善真絲纖維時(shí),發(fā)現(xiàn)用酸摻雜處理過(guò)的真絲纖維導(dǎo)電性能比未摻雜的更加優(yōu)良。通過(guò)實(shí)驗(yàn)分析,得出了苯胺在真絲表面吸附聚合的最佳工藝條件為:鹽酸的濃度為0.8mol/L,過(guò)硫酸銨的濃度為0.03mol/L,反應(yīng)溫度為10℃,反應(yīng)時(shí)間為4h。通過(guò)實(shí)驗(yàn)分析得知,真絲纖維聚苯胺含量越高,真絲纖維導(dǎo)電性能越好。為了更好的提高真絲的導(dǎo)電性能,最后對(duì)真絲纖維上的聚苯胺進(jìn)行了摻雜處理。實(shí)驗(yàn)選取了甲磺酸、對(duì)甲苯磺酸、磺酸基水楊酸為摻雜劑進(jìn)行摻雜,最后得出甲磺酸的摻雜工藝為:濃度為2mol/L,摻雜溫度為60℃;對(duì)甲苯磺酸的摻雜工藝為:濃度為3mol/L,摻雜溫度為70℃磺酸基水楊酸的摻雜工藝為:濃度為5mol/L,摻雜溫度為80℃。 通過(guò)水洗實(shí)驗(yàn)分析,用3,4-乙烯二氧噻吩和苯胺改性的真絲導(dǎo)電纖維都有一定的耐洗牢度,改性真絲纖維隨著水洗次數(shù)的增加導(dǎo)電性能逐漸下降最后維持恒定。通過(guò)傅立葉紅外、X-射線衍射等分析測(cè)試表明,真絲纖維的改性處理均沒(méi)影響到真絲纖維的內(nèi)部結(jié)構(gòu)。
[Abstract]:Poly (3,4-ethylene dioxothiophene) has good stability in air and high conductivity. Polyaniline is a typical conductive polymer, which has the advantages of high conductivity, doping, good environmental stability, easy synthesis and low cost. Conductive silk fibers were prepared by adsorption polymerization of silk fibers modified by aniline and thiophene respectively. By optimizing the influencing factors one by one, the optimum technological conditions of thiophene modified silk were obtained as follows: the temperature was 70 鈩，

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