基于响应面法的酶活化玉米秸秆碎料板工艺
Process research of particleboards using corn stalk pretreated with laccase based on response surface methodology.
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摘要: 不添加胶黏剂,热压漆酶鄄香草醛体系活化玉米秸秆碎料制备碎料板,研究香草醛浓度、漆酶用量和活化时间 对玉米秸秆碎料板力学性能的影响;同时采用响应面法建立二次回归模型,优化碎料板的制备工艺。结果表明:活 化时间对玉米秸秆碎料板的静曲强度和内结合强度影响较大,漆酶用量次之;而香草醛浓度以及因子间相互作用 对玉米秸秆碎料板的弹性模量影响较大。最优工艺条件为香草醛浓度4 mmol/ L、漆酶用量95 U/ mL、活化时间150 min。Abstract: Corn stalk pretreated with laccase-vanillin system was used to produce particleboard by hot pressing without adhesive. The objective of this study was to investigate the effects of vanillin concentration, laccase dosage and activation time on mechanical properties of corn-stalk-based particleboard. The test results were statistically analyzed and optimized by using response surface methodology ( RSM). A quadratic regression model was developed between the influencing factors and board performance. The results showed that activation time was the greatest dominant influencing factor for modulus of rupture (MOR) and internal bond (IB) strength,and second was laccase dosage. Modulus of elasticity (MOE) was prominently affected by vanillin concentration and some interactions among the influencing factors. The suggested optimal conditions were about 4 mmol/ L for vanillin concentration, 95 U/ mL for laccase dosage, and 150 min for activation time.
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期刊类型引用(6)
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