Optimization of Lactide synthesis from Lactic Acid in biorefinery of palm oil waste using Response Surface Methodology

3rd International Conference on Chemical Engineering Sciences and Applications 2017

Gozan, M.^1 ; Kamilah, F.^1 ; Whulanza, Y.^2 ; Rahmayetty, R.^3

Department of Chemical Engineering, Universitas Indonesia, Kampus UI, Depok

16424, Indonesia^1

Department of Mechanical Engineering, Universitas Indonesia, Kampus UI, Depok

16424, Indonesia^2

Department of Chemical Engineering, Faculty of Industrial Technology, Universitas Sultan Ageng Tirtayasa, Banten, Indonesia^3

关键词: Biorefineries;    Optimum conditions;    Palm oil wastes;    Poly lactic acid;    Response surface methodology;    Ring open polymerization;    Vacuum pressure;    Zinc acetate;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/334/1/012058/pdf
DOI  :  10.1088/1757-899X/334/1/012058

来源: IOP

【 摘 要 】

Ring open polymerization is one of the production polylactic acid by formation of monomer before. Lactic acid is converted into lactide in two stages, polycondensation and depolymerization. Yield lactide will determine the molecular weight which produced. This study is to optimize the lactide production from lactic acid 90% by the variations of temperature (190-220°C), vacuum pressure (5-15 cmHg), and zinc acetate catalyst (0,3-0,6% w/w). As the temperature, vacuum pressure, and catalyst is increased, lactide that is produced also increases. Optimum condition of lactide production is obtained by Response surface methodology at the temperature 220°C, catalyst 0,45%w/w, and 10 cmHg in vacuum pressure. Equation or model from this study by using RSM is yield lactide = -258,75 + 7,79A + 2,90B + 3,51C + 0,48AB - 0,06AC - 3,97x10-3BC - 105,42A2- 7,17B2- 0,10C2(A:catalyst; B:temperature; C:pressure).