Charmondusit K, Prasertpong P. Impact modification of styrene-methyl methacrylate copolymer cast sheet by using natural rubber. Environ. Nat. Resour. J. [Internet]. 2017 Apr. 20 [cited 2024 May 19];6(1):101-13. Available from: https://ph02.tci-thaijo.org/index.php/ennrj/article/view/83855