Witthayaprapakorn, Chinanat, Kamonchanok Thananukul, Nuchada Suttenun, Patchara Punyamoonwongsa, and Robert Molloy. 2015. “Composition Optimization and Characterizations of poly(L-Lactic acid)/Cellulose Acetate Blends Films in Solvent Mixture System”. Progress in Applied Science and Technology 5 (1). Thailand:9-21. https://ph02.tci-thaijo.org/index.php/past/article/view/243194.