聚苯乙烯磺酸掺杂聚苯胺的性能

以苯胺为单体，过硫酸铵(APS)为氧化剂，在聚苯乙烯磺酸(PSSA)的水溶液中，合成了PSSA掺杂的聚苯胺。通过FTIR、元素分析和热重分析等对产物的结构和性能进行了研究。结果表明：该法合成的PSSA掺杂聚苯胺可完全溶于水,具有较高的特性粘数、电导率、耐热性。     

二磺酸掺杂高热稳定性导电聚苯胺的合成及性能

以有机二磺酸作为掺杂剂合成了具有高热稳定性的二磺酸掺杂导电聚苯胺。研究了反应时间、温度、酸/苯胺摩尔比等因素对产率、产物的导电率与分子量的影响。利用微波加热的方法测试有机二磺酸掺杂聚苯胺的热稳定性能，结果表明：有机二磺酸掺杂的导电聚苯胺在微波场中升温速率快，并且具有良好的反复升温性能。     

聚苯乙烯磺酸掺杂聚苯胺/蒙脱土复合材料的制备与表征

以聚苯乙烯磺酸(PSSA)为掺杂剂,插层原位聚合制得水分散性聚苯胺(PANI)/蒙脱土(MMT)复合材料.利用X射线(XRD)、透射电镜(TEM)、热分析(DSC)、X射线光电子能谱(XPS)等对其进行表征,测试了复合材料的直流电导率-温度依赖关系.结果表明:蒙脱土主要是以剥离片层状分散在PSSA-PANI基体中,有效地抑制了过掺杂.蒙脱土片层使复合材料具有很好的热稳定性,明显改善了电导率的温度依赖性.     

聚苯胺的质子酸掺杂机制的研究

木文用FT-IR、ESR、XPS等研究了聚苯胺的质子酸掺杂机制。结果表明聚苯胺掺杂时的质子化反应优先发生在分子链中的醌亚胺结构单元的氮原子上,并产生了分子内氧化还原反应而形成阳离子自由基。质子所带的电荷由于共轭作用能较好地离域到邻近苯环及对位氮原子上。     

掺杂聚苯胺能带结构和导电机理的研究

用EHMO-CO方法对质子掺杂聚苯胺进行了模型化理论计算,得到与吸收光谱实验数据一致的能带结构,研究表明,掺杂苯胺中的载流子是极化子,能满意地解释掺杂聚苯胺的导电机制。     

掺杂态聚苯胺链结构的研究

本文利用FTIR、固体高分辨~(13)C-NMR、共振拉曼光谱及紫外-可见光谱等手段,研究了聚苯胺掺杂前后的结构变化,指出质子酸的掺杂使聚苯胺中的醌亚胺单元和苯二胺单元发生部分的氧化还原反应,生成了具有一定电荷分布的共轭体系。     

掺杂条件对聚苯胺膜导电性能影响的研究

采用对甲基苯磺酸和磺基水杨酸作掺杂剂，对聚苯胺自支撑膜进行了掺杂研究，考查了掺杂时间，温度以及掺杂溶液浓度对其导电性的影响，并用红外光谱及显色反应对掺杂产物进行了表征。结果表明，掺杂温度对聚苯胺膜电导率的影响较大，通过控制温度，可以制备出电导率达盐酸掺杂水平的导电膜，即－１０＾３Ｓ．ｍ＾－１，且具有良好的环境稳定性，在空气中放置一年，其电导率基本保持不变。     

掺杂态聚苯胺的共振拉曼光谱研究

观测了聚苯胺(PAn)在不同状态(掺杂、反掺杂、碱式、氧化、还原)下的拉曼光谱.根据其光谱特性,结合其它实验结果,提出了掺杂态PAn分子链包含电荷分布不等的三种苦环和二种氮原子的四单元苯醌变体模型,指出质子酸掺杂系分子内氧化还原反应,讨论了PAn氧化程度对掺杂效率的影响.     

过氧化氢在磺酸二茂铁掺杂的聚苯胺上的电催化氧化

在含有磺酸二茂铁溶液中合成的聚苯胺（PAnFc）和不含磺酸二茂铁溶液中合成的聚苯胺（PAn）,在pH 5.0的缓冲溶液中均能催化过氧化氢的氧化,但PAnFc的催化活性高于PAn.催化效应的证据是过氧化氢在裸铂电极上的氧化电位为0.59 V(vs SCE),而在PAnFc电极仅是0.48 V,以及过氧化氢在PAnFc电极上的阳极峰电流是裸铂电极上的5.3倍.根据这种催化特性,用PAn和PAnFc固定葡萄糖氧化酶形成酶电极.实验结果表明,PAnFc酶电极的响应电流比PAn酶电极高得多,而且响应快.这是由于PAnFc在pH 5.0缓冲液中的电化学活性高于PAn,以及掺杂在聚苯胺中的磺酸二茂铁起着重要的电荷传递作用.     

复合酸掺杂导电聚苯胺的合成及性能

采用复合酸掺杂微乳液法合成导电聚苯胺. 探讨了反应温度和掺杂剂质量比对聚苯胺性能的影响,并通过四探针、塔菲尔曲线、激光粒度分析、热重分析以及红外光谱测试技术,对聚苯胺进行了研究与表征. 结果表明,当聚合温度为15 ℃、磺基水杨酸和十二烷基苯磺酸钠的质量比为2.5∶1时,掺杂态聚苯胺电导率和溶解度达到最大值,同时具有良好的防腐蚀能力;其中电导率可达11 S/cm,在氮甲基吡咯烷酮(NMP)中溶解度可达85%;经电化学工作站测试的塔菲尔曲线可知,其腐蚀电位为-0.391 V. 热重分析表明,复合酸掺杂聚苯胺热分解温度约为440 ℃;粒径分析表明,约有90%的聚苯胺颗粒集中在50～100 nm之间.红外光谱表明,复合酸掺杂聚苯胺各主要吸收峰均向低频方向移动,说明掺杂的有效性.     

Hollow microstructures of polypyrrole doped by poly(styrene sulfonic acid)

Microstructures with hollow interiors, such as microspheres, microcrocks, microbowls, and micropumpkins, were prepared through the direct electrochemical oxidation of pyrrole in an aqueous solution of poly(styrene sulfonic acid) (PSSA). Scanning electron microscopy demonstrated that the microstructures possessed hollow interiors. The addition of polymeric doping ions made the skins of the microstructures very smooth, and several novel structures were observed. The morphology of the microstructures was simply modulated through changes in the electrochemical conditions. Raman and Fourier transform infrared characterizations indicated that the microstructures were made of conductive polypyrrole (PPy) doped by polymeric anions of poly(styrene sulfonate), and X‐ray diffraction showed that the microstructures were amorphous. Thermogravimetric analysis indicated that PPy–PSSA composite films with microstructures had higher thermal stability than pure PPy, PPy‐coated PSSA microspheres, and naphthalene sulfonic acid doped PPy microstructures. Furthermore, PPy–PSSA composite films with microstructures showed cation‐exchange behavior during the redox process in aqueous solutions of sodium dodecyl benzenesulfonate. © 2004 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 42: 3170–3177, 2004     

四甲基氢氧化铵改性聚偏氟乙烯一步接枝聚苯乙烯磺酸油水分离膜的制备及性能

利用四甲基氢氧化铵(TMAH)聚偏氟乙烯(PVDF)进行改性,以过氧化苯甲酰(BPO)为引发剂,将苯乙烯磺酸(SSA)接枝到改性的PVDF骨架上,制得聚偏氟乙烯接枝聚苯乙烯磺酸(PSSA-g-PVDF)油水分离膜。 研究了TMAH质量分数对PSSA的接枝率和油水分离膜性能的影响,同时采用傅立叶变换红外光谱(FTIR)、扫描电子显微镜(SEM)和视频光学接触角测量仪测试了膜的结构和表面接触角。 结果表明,TMAH使PVDF脱去部分氟化氢(HF)产生碳碳双键,硫元素均匀地分布在分离膜中。 PSSA的接枝率随着TMAH的质量分数增加而升高,分离膜的水通量随接枝率的升高先增加后降低。 当TMAH质量分数为20%,分离膜的接触角在30 s内降低到37.2°,接枝率和水通量分别为22.1%、643.3 L/(m·h),截留率和水通量恢复率分别达到90.6%和93.7%,衰减率为7.1%。 循环测试显示膜的水通量恢复率和油水通量恢复率均在90%以上。     

Electrical conductivity change of polyaniline–dodecyl benzene sulfonic acid complex with temperature

Polyaniline–dodecylbenzene sulfonic acid (PAn–DBSA) complex was thermally treated and its conductivity and structure change were investigated. The conductivity increased linearly from 1.1 × 10⁻⁴ to 3.0 × 10⁻¹ S/cm on thermal heating until 140°C, but decayed above 200°C. The increase was caused by an additional thermal doping resulting from an increasing mobility of undoped dopants. After the thermal doping, the formation of the layered structure of PAn–DBSA is made. The decrease was caused by the thermal decomposition of dopants. The conductivity changes at a high temperature was strongly dependent on the nature of the dopant. The results were confirmed by means of X-ray patterns and Fourier transform infrared spectra obtained in the heating and cooling processes of polyaniline.     

Effects of Supporting Electrolytes on Spectroelectrochemical and Electrochromic Properties of Polyaniline‐poly(styrene sulfonic acid) and Poly(ethylenedioxythiophene)‐poly(styrene sulfonic acid)‐based Electrochromic Device

Electrochromic devices are fabricated by using polyaniline (PANI) doped with poly(styrene sulfonic acid) (PSS) as coloring electrodes, poly(ethylenedioxythiophene)‐poly(styrene sulfonic acid) (PEDOT‐PSS) as complementary electrodes, and hybrid polymer electrolytes as gel electrolytes. The device based on LiClO₄‐based electrolyte (weight ratio of PMMA:PC:LiClO₄ = 0.7:1.1:0.3) shows the highest optical contrast and coloration efficiency (333 cm²/C) after 1200 cycles in these devices, and the color changes from pale yellow (?0.5 V) to dark blue (+2.5 V). The spectroelectrochemical and electrochromic switching properties of electrochromic devices are investigated, the maximum optical contrast (ΔT%) of electrochromic device for ITO|PANI‐PSS‖PMMA‐PC‐LiClO₄‐SiO₂‖PEDOT‐PSS|ITO are 31.5% at 640 nm, and electrochromic device based on LiClO₄‐based electrolyte with SiO₂ shows faster response time than that based on LiClO₄‐based electrolyte without SiO₂.     

以对甲基苯磺酸做掺杂剂电化学法合成聚苯胺的性能

热稳定性;溶解性;以对甲基苯磺酸做掺杂剂电化学法合成聚苯胺的性能     

Synthesis and Characterization of Conducting Polyaniline Doped with Polymeric Acids

Conducting polyaniline doped with polymeric acids was synthesized by a in situ chemical polymerization method. The synthesized polymers were characterized by using UV‐Visible, FT‐IR spectroscopy and SEM analysis. Thermal stability of these polymers was evaluated by using TGA/DSC analysis. Among the three polymeric acids used for doping purpose, poly(vinyl sulphonic acid) doped polyaniline is found to be more conducting than those doped with other acids. From the temperature dependent conductivity measurements, an increase in conductivity with increase in temperature was observed.     

固相反应法制备樟脑磺酸掺杂聚苯胺

固相合成;固相反应法制备樟脑磺酸掺杂聚苯胺     

Synthesis and Characterization of Polymeric Acid‐Doped Polyaniline Interpenetrating Polymer Networks

Polyaniline (PANI)/poly(2‐acrylamido‐2‐methylpropane sulfonic acid) (PAMPS) semi‐interpenetrating network polymers (semi‐IPNs) were prepared using the simultaneous method. The formation and properties of the interpenetrating PANI/PAMPS semi‐IPNs were investigated using Fourier transform infrared spectroscopy, X‐ray diffraction, solid‐state ¹³C‐NMR, differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA). The interaction of PAMPS with PANI as a polymeric acid dopant was also investigated. These semi‐IPNs had a different microstructure compared to that of pure PANI. Packing structures and several decomposition steps were ordered for each semi‐IPN, while pure PANI exhibits a single amorphous peak and one decomposition step. The NMR spectra show that these peaks broaden and shifted downfield in the semi‐IPNs. A thermal reaction between PANI and PAMPS was observed using DSC and TGA, and the data from the two techniques are in agreement.