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Preparation of Nanosilica-immobilized Antioxidant and the Antioxidation Effects in Polypropylene 被引量:2

Preparation of Nanosilica-immobilized Antioxidant and the Antioxidation Effects in Polypropylene
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摘要 To improve the dispersion of silica in polypropylene(PP) matrix and to avoid physical loss of the antioxidants, nanosilica with dendric polyamidoamines on the surface(SG-PAMAM) was synthesized by using divergent method. Then nanosilica-immobilized antioxidant(SG-PAMAM-AO) was prepared by grafting 2,6-di-tert-butyl-4-aminophenol which was derived from 2,6-di-tert-butyl-4-phenol(AO). The SG-PAMAM-AO was added into PP by melt mixing to study the aging property. The oxidation induction time of PP/SG-PAMAM-AO and PP/AO compounds was measured. It was found that the antioxidant property of the SG-PAMAM-AO was superior to that of AO. According to the changes of carbonyl absorption before and after photo-thermal aging, the photo-thermal oxidative stability of PP/SG-PAMAM-AO was much higher than that of PP, PP/SG-PAMAM and PP/AO. To improve the dispersion of silica in polypropylene(PP) matrix and to avoid physical loss of the antioxidants, nanosilica with dendric polyamidoamines on the surface(SG-PAMAM) was synthesized by using divergent method. Then nanosilica-immobilized antioxidant(SG-PAMAM-AO) was prepared by grafting 2,6-di-tert-butyl-4-aminophenol which was derived from 2,6-di-tert-butyl-4-phenol(AO). The SG-PAMAM-AO was added into PP by melt mixing to study the aging property. The oxidation induction time of PP/SG-PAMAM-AO and PP/AO compounds was measured. It was found that the antioxidant property of the SG-PAMAM-AO was superior to that of AO. According to the changes of carbonyl absorption before and after photo-thermal aging, the photo-thermal oxidative stability of PP/SG-PAMAM-AO was much higher than that of PP, PP/SG-PAMAM and PP/AO.
出处 《Chinese Journal of Polymer Science》 SCIE CAS CSCD 2014年第12期1602-1609,共8页 高分子科学(英文版)
关键词 Silica Antioxidant Polypropylene Antioxidant behavior. Silica Antioxidant Polypropylene Antioxidant behavior.
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