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

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) m_(acrylic)/m_(PP-g-SPS)=7:1,the molar ratio of initiator with aniline n_(APS)/n_(ANI)=2:1.The volume resistivity of PP-g-SPS-PANI/PP blends decreased to 9.5×10~(12)Ω·cm.SEM results show that the interface of PP blends has a good compatibility.