SPS/PANI复合颗粒的制备与性能研究  

Syntheses and properties of polyaniline coated polystyrene particles

作　　者：张东华[1] 井新利[2] 

机构地区：[1]西安工业学院材料与化工学院,陕西西安710032 [2]西安交通大学环境与化学工程学院,陕西西安710049

出　　处：《功能材料》2004年第6期698-700,共3页Journal of Functional Materials

基　　金：国家自然科学基金资助项目(59903005)

摘　　要：　掺杂态聚苯胺(PANI)在碱性环境下易脱掺杂是影响其应用的一个不利因素,本文通过对乳液聚合的聚苯乙烯(PS)颗粒进行磺化,得到表面磺化的PS颗粒(SPS),然后在颗粒表面原位合成PANI,进一步得到表面由磺酸掺杂的PANI包覆的复合颗粒(SPS/PANI)。研究了PANI的原位聚合过程、复合颗粒的电导率和复合颗粒的耐碱性等,结果表明这种复合颗粒在弱碱性(pH=7～9)介质中的稳定性得到显著改善。Doped polyaniline (PANI) was easy to be dedoped under alkaline environment that was one main factor that precludes PANI from industrialized applications. In this paper, PANI was in-situ polymerized on the surfaces of skin sulphonated PS particles, which came from sulphonation of emulsion polymerized PS particles to prepare sulphonic acid doped conductive PANI coated particles. Sulphonation of PS particles, in-situ polymerization process, conductivity and alkaline resistance of the composite particles were also studied. The results indicated that stability of these particles was greatly improved under alkalescent environment.

关 键 词：聚苯胺 原位聚合 表面磺化 耐碱性 

分 类 号：TB324[一般工业技术—材料科学与工程]