聚丙烯接枝苯乙烯磺酸-聚苯胺抗静电剂的制备和性能

Preparation and Properties of Polypropylene Grafted Styrene Sulfonic Acid-polyaniline Antistatic Agents

以聚丙烯(PP)为基体,以丙烯酸为掺杂剂,采用溶液接枝法制备了聚丙烯接枝苯乙烯磺酸-聚苯胺(PP-g-SPS-PANI)高分子复合物,用红外光谱仪、ZC-90数字高阻计和扫描电子显微镜等手段对高分子抗静电剂进行了表征,研究了引发剂用量,丙烯酸用量等因素对其抗静电性能的影响,结果表明:抗静电剂性能随着丙烯酸、引发剂用量增加先升高后降低,丙烯酸掺杂使复合到PP分子链上聚苯胺分子链上的电荷离域形成共轭结构而具有导电性能,当丙烯酸用量与聚丙烯接枝苯乙烯磺酸质量比m丙烯酸/m_(pp-g-SPS)=7:1,引发剂与苯胺摩尔比n_(APS)/n_(ANI)=2:1时复合效率最高,抗静电效果最好,抗静电剂与PP共混物的电阻率下降到9.5×10^(12)Ω·cm.对PP共混物界面的SEM测试结果表明,共混物具有良好的相容性.

Polymer complex of polypropylene grafted styrene sulfonic acid–polyaniline（PP–g–SPS–PANI） was prepared by solution grafting to acrylic acid as a dopant and polypropylene （PP） as the matrix. PP–g–SPS–PANI were characterized by fourier transfer infrared spectrometry（FTIR）, ZC–90 digital impedance meter and scanning electron microscopy（SEM）. The amount of acrylic and initiator to influence on antistatic properties were studied. The results showed that the antistatic properties of PP–g–SPS–PANI increased with the amount of the acrylic and initiator, and then decreased. Acrylic doped so that PANI molecular chain formed charge delocalized conjugated structure and having conductive properties. The complex efficient and antistatic properties of antistatic agents are best when the mass ratio of acrylic with polypropylene graft styrene sulfonamide acid（PP–g–SPS） macrylic/mPP？g？SPS=7：1, the molar ratio of initiator with aniline nAPS/nANI=2：1. The volume resistivity of PP–g–SPS–PANI/PP blends decreased to 9.5×1012Ω·cm. SEM results show that the interface of PP blends has a good compatibility.