TY - JOUR AU - Saengiet, Buranin AU - Unob, Fuangfa AU - Srikulkit, Kawee PY - 2014/11/28 Y2 - 2024/03/29 TI - Effect of styrene-methyl methacrylate/styrene-butadiene rubber on properties of poly(vinyl chloride) JF - Journal of Metals, Materials and Minerals JA - J Met Mater Miner VL - 24 IS - 2 SE - Original Research Articles DO - UR - https://jmmm.material.chula.ac.th/index.php/jmmm/article/view/116 SP - AB - Generally, poly(vinyl chloride) (PVC) without the addition of plasticizer or impact modifiers is rigid and brittle. The aim of this research was to improve the mechanical properties of PVC using styrene-methyl methacrylate/styrene-butadiene compound (SMMA/SBR rubber) as an impact modifier. The compound was obtained commercially.  PVC containing SMMA/SBR rubber having SMMA/SBR phrs of 2.5, 5, 7.5 and 10 were prepared using two-roll mill set the conditions as follows: 170 <sup>o</sup>C and 5 min. Then, compression molding was carried out to prepare testing samples. FTIR analysis of SMMA/SBR rubber containing PVC samples showed the absorption band at 1732 cm<sup>-1</sup> (C=O stretching), 3025 cm<sup>-1</sup> (=C-H stretching) and 636.8 cm<sup>-1</sup> (C-Cl band). The effects of SMMA/SBR rubber on mechanical properties, including impact strength and tensile properties were evaluated by standard tests. The impact strength of SMMA/SBR rubber containing PVC increased significantly with an increase in the SMMA/SBR content (ex. SMMA/SBR 5 phr and 10 phr produced 3.30 and 6.38 kJ/m<sup>2</sup> respectively), resulting from the action of SMMA/SBR rubber phase as impact modifier as revealed by SEM images. Furthermore, modulus, tensile strength and elongation at break were investigated. ER -