| 漆酶-ABTS介体体系活化木质素磺酸铵制备环保型纤维板及其性能表征 |
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| 引用本文： | 杜文鑫,张永明,郭明辉. 漆酶-ABTS介体体系活化木质素磺酸铵制备环保型纤维板及其性能表征[J]. 东北林业大学学报, 2017, 45(2) |
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| 作者姓名： | 杜文鑫 张永明 郭明辉 |
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| 作者单位： | 生物质材料科学与技术教育部重点实验室(东北林业大学),哈尔滨,150040 |
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| 基金项目： | 林业公益性行业科研专项资助 |
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| 摘 要： | 以木纤维为基体,漆酶-ABTS介体体系活化后的木质素磺酸铵(Lac+ABTS/ML)为黏结剂制备环保型纤维板(Lac+ABTS/MLF),利用傅里叶变换红外光谱(FT-IR)、紫外可见分光光度计(UV)、X射线衍射仪(XRD)和热重分析仪(TGA)分别分析材料的化学组分、酚羟基质量分数、结晶度和热稳定性;并通过单因素试验对漆酶用量、介体用量和活化时间3个工艺参数进行优化。结果表明,最佳的工艺参数为漆酶添加量为20 U/g、介体添加量为0.3%和活化时间为60 min,在此工艺下制备的纤维板的物理力学性能均已达到GB/T 11718—2009中干燥状态下使用的普通型中密度纤维板性能要求。
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| 关 键 词： | 漆酶介体体系 木质素磺酸铵 环保型纤维板 工艺参数 物理力学性能 |
Performances of Eco-friendly Fiberboard Prepared by Laccase-mediator System Modified Ammonium Lignosulfonate |
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| Du Wenxin,Zhang Yongming,Guo Minghui. Performances of Eco-friendly Fiberboard Prepared by Laccase-mediator System Modified Ammonium Lignosulfonate[J]. Journal of Northeast Forestry University, 2017, 45(2) |
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| Authors: | Du Wenxin Zhang Yongming Guo Minghui |
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| Abstract: | The eco-friendly fiberboard was manufactured by wood fiber as raw material and the ammonium lignosulfonate modified by laccase-ABTS mediator system(Lac+ABTS/ML)as wood adhesives.The Lac+ABTS/ML,MDF and the fractures in the bonded joints were analyzed via Fourier transform infrared spectroscopy(FTIR),X-ray diffraction(XRD),UV-Vis spectrophotometer(UV)and thermal gravimetric analyzer(TGA),and the optimal modifying parameters were measured by orthogonal test.The optimal modifying parameters were 20U/g of laccase dosage,0.3％of mediator dosage,60min of activation time,and the performance of MDF using Lac+ABTS/ML as adhesives improved significantly than that of MDF using ammonium lignosulfonate modified by laccase(Lac+ABTS/MLF)only as adhesives. |
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| Keywords: | Laccase-mediator system Ammonium lignosulfonate Environment-friendly fiberboard Processing parameters Physicochemical properties |
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