Oxidation of HDPE in the Presence of PVC Grafted with Natural Polyphenols (Tannins) as Antioxidant
作者： Hussein A. Shnawa , Moayad I. Khaleel , Faise J. Muhamed
DOI: 10.4236/OJPCHEM.2015.52002
关键词:
摘要: In the current research study, an attempt is made to modification of polyvinyl chloride (PVC) by grafting with biologically based phenolic resin, namely, tannins. The reaction was carried out at 110°C in DMF solution. FTIR spectra show presence hydroxylic groups and other functional tannins into PVC-tannins derivative. Evaluation new PVC derivative as polymeric antioxidant for high density polyethylene (HDPE) main purpose this study. Samples HDPE containing (0.0, 0.5 2.0) %W/W from pure were exposed thermal program differential scanning calorimetry (DSC) temperature sweep 100°C 350°C. DSC scans oxidation process well exothermic stage started 195°C continues 285°C. samples contain more resistance reactions until 215°C sample stabilized 0.5% 221°C 2.0%. Faster initiation degradation rate observed when contained PVC-tannins. According analysis, can participate stabilization mechanism but limited performance.
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