Page 67 - 《精细化工》2020年第3期

第 3 期 白毓黎，等: 酶解秸秆残渣中木质素的提取及应用 ·485·

升。这主要是由于葡萄糖改性后的聚氨酯交联密度 参考文献：
增大，结构中的氢键缔合，生成网状结构，热解过 [1] RASS-HANSEN J, FALSIG H, JORGENSEN B, et al. Bioethanol:
程中需要更多的能量来解离氢键和分子间的交联结 Fuel or feedstock? [J]. Journal of Chemical Technology and
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构，提高了聚氨酯薄膜的耐热性。 [2] KUMAR R, TABATABAEI M, KARIMI K, et al. Recent updates on
lignocellulosic biomass derived ethanol — A review[J]. Biofuel
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[3] CHEN Lizhu (陈丽珠), HUANG Hong (黄洪), CHEN Huanqin (陈
焕钦). Progress of waterborne polyurethane and its application [J].
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[4] GURUSAMY-THANGAVELU S A, EMOND S J, KULSHRESTHA
A, et al. Polyurethanes based on renewable polyols from bioderived
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[5] JEON H T, JANG M K, KIMA B K. Synthesis and characterizations
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[6] ANDA F, ULDIS S, BRIGITA L, et al. Characterization of polyurethane
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[7] ZHU Changchun (朱长春), WENG Hanyuan (翁汉元), LÜ Guohui
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[8] HUANG Chendi (黄晨笛), LIU Yu (刘昱), JIN Youwen (金又文), et
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[9] LU Yao (路瑶), WEI Xianyong (魏贤勇), ZONG Zhimin (宗志敏).
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图 5 不同葡萄糖质量分数 glu-PU 薄膜的 TGA（a）和 Synthetic conditions and performance of lignin Based polyurethane
film [J]. Biomass Chemical Engineering (生物质化学工程), 2007,
DTG（b）曲线 41(4): 27-30.
Fig. 5 TGA and DTG curves of polyurethane films with [11] WANG Fei (王飞). Preparation and characterization of the degradable
different glucose content composites of lignin and PCL[D]. Mianyang: Southwest University
of Science and Technology (西南科技大学), 2015.
[12] WANG Zhimin ( 王治民 ), YANG Xiaohui ( 杨晓慧 ), ZHOU
3 结论 Yonghong (周永红). Research progress of lignin-based polyurethane
film[J]. New Chemical Materials (化工新型材料), 2013, 41(7):
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（1）通过正交实验探索并确定了碱性乙醇法从 [13] YANG Xiaohui (杨晓慧), ZHOU Yonghong (周永红), GUO Xiaoxin
酶解玉米秸秆残渣中提取木质素的较佳条件：乙醇 (郭晓昕). Application of lignin in synthesis of polyurethane [J].
Chemistry and Industry of Forest Products (林产化学与工业) ,
体积分数为 50%（体积分数），温度 220 ℃，固液比
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1∶20 和 NaOH 质量分数 1%。在该条件下，提取的 [14] Standardization Administration of the People's Republic of China (中
产品中木质素质量分数为 94.1%，木质素的提取率 国国家标准化管理委员会). Fibrous raw material-Determination of
acid-insoluble lignin：GB/T 2677.8—1994 [S]. Beijing: Standards
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达到 93.5%；FTIR、HNMR 和 CNMR 谱图中均显 Press of China (中国标准出版社), 1994:1-3.
示出木质素的特征吸收峰和信号峰，木质素结构中 [15] Standardization Administration of the People's Republic of China (中
国国家标准化管理委员会). Raw material and pulp-Determination
的羟基含量为 66.5 mg KOH/g。 of acid-soluble lignin：GB/T 10337—2008[S]. Beijing: Standards
（2）用提取的木质素部分代替聚己内酯二醇和 Press of China (中国标准出版社), 2008:1-2.
[16] Standardization Administration of the People's Republic of China (中
六亚甲基二异氰酸酯反应制备木质素基聚氨酯薄 国国家标准化管理委员会). Test method for gas permeability of
膜，木质素质量分数为 27%时，薄膜的拉伸强度为 plastic films and sheeting：GB/T 1038—2000[S]. Beijing: Standards
Press of China(中国标准出版社), 2000:1-3.
24.0 MPa，断裂伸长率为 224%。 [17] Standardization Administration of the People's Republic of China (中
（3）选择葡萄糖作为提高木质素基聚氨酯薄膜 国国家标准化管理委员会). Determination of hydroxyl number (羟
值的测定): GB/T 12008.3—2009[S]. Beijing: Standards Press of
降解性能的助剂，当葡萄糖质量分数为 3%时，制备
China (中国标准出版社), 2009:1-6.
的 glu-PU 薄膜 60 d 的土壤自然降解率为 11.0%，吸 [18] Standardization Administration of the People's Republic of China (中
3
2
水性为 1.1%，透气性为 0.0016 cm /(m ·d·Pa)，而且 国国家标准化管理委员会). Determination of acidity as acid numbe
(酸值的测定): GB/T 12008.5—2010[S]. Beijing: Standards Press of
葡萄糖的引入还进一步提高了聚氨酯薄膜的热稳定性。 China (中国标准出版社), 2010:1-2.