摘要
将平均粒径为58nm的盐酸掺杂苯胺-磺化苯胺（PANSA）纳米颗粒悬浮液与二醋酸纤维素（CDA）溶液共混，采用悬浮液浇铸法，制备了透明度高、柔韧性好、逾渗阈值（PANSA纳米颗粒的体积分数）低的PANSA／CDA纳米复合膜（简称复合膜）。PANSA纳米颗粒通过化学氧化聚合法，在无乳化剂或稳定剂存在下，以过硫酸铵为氧化剂，在1．0mol／L盐酸水溶液中由苯胺与2-甲氧基苯胺-5-磺酸合成得到。所得复合膜的逾渗阈值很低，当逾渗阈值为0．08％时，复合膜的可见光透过率、拉伸强度和电导率分别是CDA均质膜的83％～89％，98％，10^8倍。PANSA纳米颗粒的体积分数由0．10％增至9．00％时，复合膜的电导率由9．43×10^-9S／cm增至1．35×10^-3S／cm，达到了防静电材料的要求。同时，复合膜的导电性在150℃以下具有良好的稳定性。
Highly transparent, flexible, low percolation threshold and conductive nanocomposite membranes were prepared by mixing poly （ aniline - co - sulfonic aniline ） （PANSA） nanoparticle suspension （average 58 nm in diameter） with cellulose diacetate solution under ultrasonic wave for 2. 0 h, and then by casting the solution onto glass plate. PANSA nanoparticles were synthesized by oxidative copolymerization of aniline and 2 - methoxyaniline - 5 - sulfonic acid in 1.0 mol/L HCI aqueous solution with ammonium peroxydisulfate as oxidant without emulsifier or stabilizer. The nanocomposite membranes show very low percolation threshold. When PANSA volume fraction in mixture is 0.08%, transparency, tensile strength and conductivity of the nanocomposite membrane can reach 83% - 89%, 98% and 108 times respectively of cellulose diacetate homogeneous membrane. With increase of nanoparticle load （volume fraction） from 0. 10% to 9.00%, conductivity of the nanocomposite membrane increases from 9.43×10^-9 to 1.35×10^-3 S/cm, which can meet demand of antistatic material. Conductivity of the nanocomposite membrane is steady below 150 ℃.
出处
《石油化工》
EI
CAS
CSCD
北大核心
2007年第5期502-506,共5页
Petrochemical Technology
基金
福建省教育厅科技项目(JB06044)
福州大学校人才基金项目(XRC-0633)
关键词
苯胺
磺化苯胺
共聚物
二醋酸纤维素
纳米复合膜
aniline
sulfonic aniline
copolymer
cellulose diacetate
nanocomposite membrane
