细鳞片膨胀石墨／聚苯胺导电复合材料的制备研究

以十二烷基苯磺酸钠为乳化剂,过硫酸铵为聚合引发剂,盐酸和细鳞片膨胀石墨为掺杂剂,利用乳液聚合法制备了细鳞片膨胀石墨／聚苯胺导电复合材料。通过正交实验,找到了膨胀石墨的掺杂量、盐酸用量、乳化剂及引发剂对电导率影响规律。最佳实验条件为：石墨掺杂6％,盐酸6mL,乳化剂5g,引发剂3．25g。该条件下的电导率为0．75S／cm。证明石墨的加入能有效提高聚苯胺的电导率。     

原位聚合法制备聚苯胺/改性羰基铁粉复合材料

采用正硅酸乙酯(TEOS)对羰基铁粉(CIP)表面改性,通过原位聚合法制备了聚苯胺(PANI)/改性CIP复合材料。傅里叶变换红外光谱验证了SiO2和CIP表面形成了化学键。耐酸性实验表明:TEOS可在较长时间内保护CIP不被酸腐蚀,保证了制备PANI/CIP复合材料过程中CIP处于SiO2的有效保护下。所得复合材料为CIP表面包覆直径约20 nm均匀致密的PANI微粒,复合效果明显改善。复合材料电导率与CIP未改性前处于相同数量级。     

聚苯胺/纳米石墨复合材料的原位制备与导电性能研究

采用原位聚合法制备了聚苯胺/纳米石墨微片（PANI/NanoG）导电复合材料。结果表明,NanoG的直径约为1~20 μm,厚度为30~90 nm,径厚比为300~500;PANI均匀覆盖在NanoG表面;当NanoG体积含量为2.30 %时,复合材料电导率达到5.16 S/cm,其渗滤阈值达到2.30 %,NanoG的高比表面积及在PANI中的分散造就了复合材料良好的导电性能。     

原位吸附聚合法制备聚苯胺/废弃丁羟黏合剂复合导电材料

采用原位吸附聚合法制备了聚苯胺/废弃丁羟黏合剂导电复合材料,考察了苯胺单体质量分数、掺杂质子酸浓度、氧化剂浓度、反应时间和反应温度对复合产物导电性的影响,并用红外光谱仪对复合物的结构进行了表征。结果表明,较佳反应条件为苯胺单体质量分数为20%,掺杂质子酸对甲苯磺酸浓度为0.1 mol/L,氧化剂浓度为0.16 mol/L,反应时间为2 h,反应温度为10℃。在此条件下处理废弃丁羟黏合剂可使体积电阻率由原来的1011Ω·m降低到105Ω·m。     

原位聚合法制备环氧树脂/石墨复合材料的性能研究

采用原位聚合法制备了环氧树脂/石墨复合材料,并对其进行热重(TG)、扫描电镜(SEM)和力学性能分析。结果表明,环氧树脂/石墨复合材料的邵氏硬度和抗弯强度随石墨含量而变化,当其含量为17.44%(质量分数)时,两者出现最大值,抗弯强度达到22.4 MPa,邵氏硬度达到5.21 HD;石墨的加入也使复合材料的电性能和热性能得到提高,其耐热温度可达350℃。     

原位聚合沉积制备聚苯胺/聚酰亚胺/聚苯胺复合膜

以聚酰亚胺(PI)膜为基体,采用分散聚合原位沉积方法制得聚苯胺/聚酰亚胺/聚苯胺(PANI/PL/PANI)三层复合膜.复合膜表面PANI层外观质量优异,电导率达10~0S/cm.实验结果表明:加入高浓度空间稳定剂(聚乙烯吡咯烷酮,PVP)、调整氧化剂(过硫酸铵,APS)和介质酸(盐酸)的用量可制得表面质量和电导率高的复合膜.较适宜的反应条件为稳定剂质量浓度4%,APS与苯胺(An)的物质的量比为2:4,盐酸浓度为0.5 mol/L.     

原位吸附聚合法在制备聚苯胺导电复合材料中的应用

综述了原位吸附聚合法在制备复合改性聚苯胺导电复合材料中的应用,并展望了聚苯胺导电复合材料的应用前景。     

原位聚合法制备活性碳-聚苯胺复合材料及其电化学性能

通过原位化学沉积法将聚苯胺（PANI）均匀地沉积在多孔活性碳（AC）表面，得到AC-PANI纳米复合材料，通过扫描电子显微镜（SEM）、傅立叶变换红外（FTIR）光谱对样品的形貌及成分进行表征，将得到的复合材料组装成电化学超级电容器，进行电化学的循环伏安和恒流充放电测试？结果显示，在1M的硫酸溶液中复合材料的比容量达到240F／g，较纯粹的活性碳（120F／g）提高将近一倍。     

聚苯胺/PE复合材料的制备探究

采用原位化学氧化聚合法制备苯胺/PE导电复合材料,使苯胺在基体高分子PE的水溶液中进行聚合,研究反应体系中聚苯胺的含量、反应时间、温度对复合材料电导率的影响,确定了较佳的聚合反应条件,并且通过红外对光谱复合材料的结构、光电性能和稳定性进行了表征和分析。     

原位聚合法制备PMMA／石墨纳米导电复合材料

本文将MMA(甲基丙烯酸甲酯)单体插入膨胀石墨层间,经过原位聚合,制备出以石墨层片为纳米分散相的导电复合材料.这种新型材料的渗滤阈值很低,质量分数只有0.7%;导电性能优异,当石墨添加量的质量分数为1%时,体积电阻率只有20Ω.Cm.与传统的高分子基导电复合材料相比,还具有力学性能好,易加工以及生产成本低等特点.     

PE-HD／PANi／EG复合材料的制备

用过硫酸铵氧化原位聚合法成功制备了聚苯胺/膨胀石墨(PANi/EG)导电复合填料,用溶液法对高密度聚乙烯(PE-HD)填充复合,制备出PE-HD/PANi/EG复合材料,实现了PE-HD由绝缘体向半导体的转化。通过X射线衍射、扫描电镜、电导率测量对材料进行了表征,结果表明:PANi/EG复合填料XRD表征初级粒子尺寸小于28nm,SEM表征聚集体粒子尺寸约500nm左右,电导率高于0.5S/cm;复合导电填料质量分数为5%时,电导率达到10-10S/cm,接近抗静电材料的要求。     

循环伏安法制备聚苯胺/活性炭超级电容器膜电极

采用电化学循环伏安法,在柔性石墨纸基底材料上合成了聚苯胺/活性炭(PANI/AC)复合薄膜。 通过SEM观察了不同扫描圈数下复合薄膜的表面形貌,通过循环伏安(CV)、交流阻抗(EIS)、恒流充放电等电化学测试方法,研究了聚苯胺/活性炭复合电极的电性能。由SEM图谱可知,不同扫描圈数下,聚苯胺/活性炭的形态也有所不同,电化学测试结果表明,以柔性石墨纸为基底材料,扫描圈数在3圈时,不仅比容量较高,达504 F·g^-1,而且循环稳定性较好,经2000次循环后,容量衰减仅为初始容量的14%。     

聚苯胺/镍纳米复合材料的制备及其表征

以苯胺（An）、氯化镍（NiCl2×6H2O）为原料,原位聚合法合成聚苯胺/镍纳米复合微粒。采用X射线衍射仪、扫描电镜、傅里叶变换红外光谱仪、振动样品磁强计（VSM）及四探针测试仪技术表征了复合微粒的结构、形貌和电磁性能。结果表明：复合微粒在室温外加磁场下表现出铁磁性物质具有的磁滞现象,饱和磁化强度为9.44 emu/g,复合微粒在室温下的电导率为5×10-3 S/cm。     

Preparation of polystyrene/polyaniline core/shell structured particles and their epoxy‐based conductive composites

Polyaniline (PANI) was synthesized by chemical oxidative polymerization of aniline (ANI) in the presence of sulfonated crosslinked polystyrene (SCPS) particles in neutral water. The polymerization of ANI occurred preferentially on the surfaces of the SCPS particles, resulting in core/shell structured SCPS/PANI particles. The conductivities of the SCPS/PANI particles increased with increasing degree of sulfonation of the SCPS and with increasing ANI/SCPS weight ratios in the reactants. Conductive epoxy‐based composites were prepared by curing the blend of SCPS/PANI particles and epoxy resin with an aromatic amine curing reagent, indicating the core/shell structured particles were stable, to some extent, to alkaline environments, which will be of significant importance for the practical application of PANI in many cases. Copyright © 2006 Society of Chemical Industry     

Effect of dopant and oxidant on the electrochemical properties of polyaniline/graphite nanoplate composites

Optimizing the synthesis parameters of polyaniline/graphite nanoplate (PANI/GNP) composite is essential to the final electrochemical performance. Herein, the electrochemical properties of PANI/GNP composites, prepared by in situ chemical polymerization using varying amounts of different oxidants, with or without the addition of 4‐dodecylbenzenesulfonic acid (DBSA) as dopant, were investigated. Cyclic voltammetric results suggested that a stoichiometric amount of the oxidant iron chloride (FeCl₃) was beneficial to the electrochemical properties of the composites. The use of ammonium persulfate (APS) instead of FeCl₃ as oxidant largely increased the actual PANI content, conductivity and specific capacitance of the PANI/GNP composites. The dopant DBSA increased the conductivity of the PANI/GNP composites but did not show a positive effect on the electrochemical behavior. The cyclic voltammograms of the PANI/GNP composites indicated that the pseudocapacitance of PANI contributes more than the electrical double‐layer capacitance of GNP to the capacitance of the composites, while the presence of GNP plays an essential role in the rate capability of the composites. In this study, PANI/GNP (1:1) composite synthesized with an APS to aniline molar ratio of 1 showed a balanced combination of high specific capacitance (180.5 F g^?1 at 20 mV s^?1) and good rate capability (78% retention at 100 mV s^?1). © 2018 Society of Chemical Industry     

聚合物/石墨导电纳米复合材料制备方法进展

综述了聚合物/石墨导电纳米复合材料制备方法的进展。首次将制备方法归为碱金属插层聚合法、膨胀石墨原位聚合法和膨胀石墨共混复合法3大类,详细介绍了它们的概念、特点和研究概况。特别是重点介绍了超声粉化法、表面处理法、助剂预复合法、预包覆母料法以及其他方法等膨胀石墨间接共混复合法的概念和概况。还对聚合物/石墨导电纳米复合材料领域的未来研究重点提出了自己的看法。     

Preparation of polyaniline and studying its electrical conductivity

Polyaniline was prepared by chemical methods. Its electrical conductivity was measured. The electrical conductivity of polyaniline salt and polyaniline base were compared with composites prepared by the hot press of polyaniline base with KBr, Co(CH₃COO)₂, and picric acid. © 2000 John Wiley & Sons, Inc. J Appl Polym Sci 77: 1658–1665, 2000     

聚丙烯／石墨导电复合材料的制备与表征

以制备具有低渗滤阀值（Φc)的聚丙烯（PP）／石墨导电复合材料为目的,采取了使用膨胀石墨（EG）,引入接枝聚丙烯(gPP),使用溶液插层复合等措施,制得Φc=6%（质量比,下同）的PP/gPP/EG导电复合材料,比PP／EG导电复合材料的Φc=11%降低了46％,研究了复合材料的制备方法－形态结构－导电性能关系,论述了不同方法制得的复合材料的Φc和导电性有明显差异的结构和本质原因。     

Preparation and electroactivity of polyaniline/poly(acrylic acid) film electrodes modified by platinum microparticles

The preparation and properties of poly(acrylic acid) (PAA)-doped polyaniline (PANI) film electrodes further modified by electrodeposition of platinum particles were investigated by cyclic voltammetry and in situ conductivity measurement. The PANI/PAA film exhibits a better electroactivity and higher stability, even in solutions of lower acidity, although its polymerization rate is decreased three-fold compared to that of PANI. The conductivity of the PANI/PAA film increases by a factor of two compared to that of PANI. The effects of the carboxylic acid groups of PAA in the PANI matrix on the performance of the film are discussed. The electrocatalytic activity of PANI/PAA/Pt for reduction of hydrogen and oxidation of MeOH is higher than that of PANI modified with Pt particles alone. Characterization of the electrodes by SEM shows the platinum modification procedure yields roughly spherical catalyst particles 0.51mum in diameter dispersed throughout the polyaniline.