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Effect of Styrene-Methyl Methacrylate/Styrene-Butadiene Rubber on Properties of Poly(vinyl chloride) |
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| รหัสดีโอไอ | |
| Creator | Buranin SAENGIET,Fuangfa UNOB,Kawee SRIKULKIT |
| Title | Effect of Styrene-Methyl Methacrylate/Styrene-Butadiene Rubber on Properties of Poly(vinyl chloride) |
| Publisher | Metallurgy and Materials Science Research Institute, Chulalongkorn University |
| Publication Year | 2557 |
| Journal Title | Journal of Metals, Materials and Minerals |
| Journal Vol. | 24 |
| Journal No. | 2 |
| Page no. | 9 -13 |
| Keyword | SMMA/SBR rubber compound,Impact modifier,PVC |
| ISSN | 8576149 |
| Abstract | Generally, poly(vinyl chloride) (PVC) without the addition of plasticizer or impact modifiers is rigidand brittle. The aim of this research was to improve the mechanical properties of PVC using styrene-methylmethacrylate/styrene-butadiene compound (SMMA/SBR rubber) as an impact modifier. The compound wasobtained commercially. PVC containing SMMA/SBR rubber having SMMA/SBR contents of 2.5, 5, 7.5 and10 phrs were prepared using two-roll mill set the conditions as follows: 170?C and 5 minutes. Then, compressionmolding was carried out to prepare testing samples. FTIR analysis of SMMA/SBR rubber containing PVCsamples showed the absorption band at 1732 cm-1 (C=O stretching), 3025 cm-1 (=C-H stretching) and 636.8 cm-1(C-Cl band). The PVC and SMMA/SBR rubber were compatible due to the specific interaction betweencarbonyl groups (C=O) of methyl methacrylate and hydrogen atom of PVC CH-Cl group that was confirmedby a slight shift of absorption band of methyl methacrylate carbonyl groups to lower wave number. The effectsof SMMA/SBR rubber on mechanical properties, including impact strength and tensile properties wereevaluated by standard tests. The impact strength of SMMA/SBR rubber containing PVC increased significantlywith an increase in the SMMA/SBR content (ex. SMMA/SBR 5 phr and 10 phr produced impact strengths of3.30 and 6.38 kJ/m2 respectively), resulting from the action of SMMA/SBR rubber phase as impact modifier asrevealed by SEM images. Furthermore, modulus, tensile strength and elongation at break and plasticizermigration ability were investigated. |
