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Performance and synergistic effect of phenolic and thio antioxidants in ABS graft copolymers |
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| Authors: | Gongsheng LI Xuhong GUO Wang NA Diancheng HAO Mingyao ZHANG Huixuan ZHANG Jun XU |
| Affiliation: | 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 |
| 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 |
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