Performance and synergistic effect of phenolic and thio antioxidants in ABS graft copolymers

doi:10.1007/s11705-010-0531-8

Front Chem Sci Eng

2011, Vol. 5

Issue (1) : 26-34 https://doi.org/10.1007/s11705-010-0531-8

RESEARCH ARTICLE

Performance and synergistic effect of phenolic and thio antioxidants in ABS graft copolymers

Gongsheng LI¹(

), Xuhong GUO¹, Wang NA², Diancheng HAO³, Mingyao ZHANG⁴, Huixuan ZHANG^4,5, Jun XU¹

1. School of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China; 2. Calcium Carbide Factory of Jilin Petrochemical Co. Ltd, Petrochina, Jilin 132022, China; 3. Polyethylene Factory of Jilin Petrochemical Co. Ltd, Petrochina, Jilin 132022, China; 4. Institute of Chemical Engineering, Changchun University of Technology, Changchun 130012, China; 5. Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130012, China

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Abstract

The synergistic effect of phenolic and thio antioxidants on the stabilization of acrylonitrile-butadiene-styrene (ABS) graft copolymers has been studied. Three commercial antioxidants Irganox245, Irganox1076 and dilauryl thiodipropionate (DLTP) were selected. Formulations based on hindered phenols and secondary antioxidant DLTP were prepared. Stabilization was monitored in terms of changes in the functional groups (oxidation products), tensile properties and yellowness index. Differential scanning calorimetry (DSC) and thermogravimetry (TG) were also used to assess the stability. The results indicated that the combination of Irganox245 and DLTP showed much better stabilization effect than the individual components due to the strong synergistic effect. Only weak synergism could be observed in the formulation that contained Irganox1076 and DLTP. Irganox1076 and Irgnox1076/DLTP exhibited similar behaviors between antioxidants with the highest and lowest efficiencies.

Keywords antioxidant ABS graft copolymers synergistic effect

Corresponding Author(s): LI Gongsheng,Email:jh_lgsh@petrochina.com.cn

Issue Date: 05 March 2011

Cite this article:

Gongsheng LI,Xuhong GUO,Wang NA, et al. Performance and synergistic effect of phenolic and thio antioxidants in ABS graft copolymers[J]. Front Chem Sci Eng, 2011, 5(1): 26-34.

URL:

https://academic.hep.com.cn/fcse/EN/10.1007/s11705-010-0531-8
https://academic.hep.com.cn/fcse/EN/Y2011/V5/I1/26

Tab.1 Properties of the antioxidants studied

Tab.2 The prescription of the antioxidant emulsion and content of antioxidant in ABS polymers

Fig.1 Dynamic DSC curves of ABS graft copolymers stabilized with different antioxidants in oxygen

Fig.2 Isothermal DSC curves of ABS graft copolymers stabilized with different antioxidants in oxygen at 180°C

Tab.3 The synergistic effects of antioxidant formulations in ABS graft copolymers

Fig.3 TG curves of unstabilized ABS graft copolymers in air and nitrogen

Tab.4 Temperature of the onset and maximum of thermal weight gain of ABS graft copolymers stabilized with different antioxidants

Fig.4 The FTIR spectrum of ABS graft copolymers contained Irganox1076 aging at different temperatures

Fig.5 The dependence of the carbonyl index of ABS graft copolymers stabilized with different types of antioxidants on temperatures of oven aging

Fig.6 The dependence of the hydroxyl index of ABS graft copolymers stabilized with different types of antioxidants on temperatures of oven aging

Fig.7 The dependence of the elongation at break of ABS graft copolymers stabilized with different types of antioxidants on temperatures of oven aging

Fig.8 The forming of colored product

Fig.9 The dependence of the yellowness index of ABS graft copolymers stabilized with different types of antioxidants on temperatures of oven aging

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