Abstract: Cellulose triacetate (CTA) is successfully synthesized from spent corrugated cardboard boxes to realize the recycling.The synthesis process is optimized by response surface analysis.CTA is synthesized via homogeneous acetylation reaction by using the treated box fibers as feedstocks, with acetic anhydride as acetyl donor, acetic acid as solvent and sulfuric acid as catalyst.The impacts of the concentrations of acetic acid, acetic anhydride and catalyst, and reaction time on the yield of cellulose triacetate are explored.Combining with response surface analysis, the optimum reaction conditions are obtained that the mass ratio of sulfuric acid to cellulose is 0.21:1, the mass ratio of acetic anhydride to cellulose is 5.5:1, the mass ratio of acetic acid to cellulose is 20:1, the reaction lasts for 6.2 h, and the reaction temperature is at 60℃.CTA substitution degree reaches 2.94 and the yield of CTA reaches 81.03% under the optimal conditions.
袁璐璇, 康菡子, 王彦博, 蒋文伟. 响应面法优化三醋酸纤维素合成工艺的研究[J]. 现代化工, 2021, 41(12): 175-179.
YUAN Lu-xuan, KANG Han-zi, WANG Yan-bo, JIANG Wen-wei. Optimization on synthesis of cellulose triacetate by using response surface methodology. Modern Chemical Industry, 2021, 41(12): 175-179.
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