木质素酚的结构调控及其对复合材料性能的影响

项目名称： 木质素酚的结构调控及其对复合材料性能的影响

项目编号： No.51203075

项目类型： 青年科学基金项目

立项/批准年度： 2013

项目学科： 有机高分子材料学科

项目作者： 任浩

作者单位： 南京林业大学

项目金额： 25万元

中文摘要： 在高分子材料需求量日益增长和石油资源日显紧缺的当前形势下，研究以木质纤维素资源部分取代石油高分子材料具有重要意义。目前，关于木质素如何在工程塑料中广泛应用的研究面临着如何改善和提高极性完全不同的木质素高分子和合成高分子之间的界面相容性差的难题。本研究拟采用相分离技术，分别以木质纤维素、工业木质素、酶解木质素为原料得到木质素基高分子木质素酚。通过对木质素酚的进一步结构调控，研究木质素酚及其不同改性产物与工程塑料的相容性以及对复合材料力学性能的影响。从而解决木质素目前尚未被广泛应用于材料领域所面临的熔融塑化加工困难、共混共聚相容性差等关键技术问题，以阐明天然高分子与合成高分子高效融合途径与机理，是材料科学与生命科学的交叉领域研究，研究成果将为开发新型生物质基工程塑料提供重要的基础数据，具有重大意义。

中文关键词： 木质素酚；结构调控；复合物；特性表征；细胞壁组分

英文摘要： Lignocellulosic polymers play an important role in the developments of bio-based fuels and products as substitutes for those derived from the petroleum. A recent emphasis has been on the isolation and utilization of the polysaccharide (cellulose and hemicelluloses) components. However, the resulting lignin residue being poor in chemical reactivity has rather limited polymer applications. On the other hand, it is well known that wood substrates, when mixed with phenol and strong acid under ambient conditions, can be readily separated into a carbohydrate and a lignin faction. The lignin isolated from the latter fraction is generally termed as Lignophenol and has unique chemical and physical properties differed distinctly from other technical lignin. Attempts to further understand and improve the reactivity of Lignophenols for enhanced polymer applications constitute the basis of this proposed project. In this study, major factors of the phase-separation process affecting the properties of resulting Lignophenol will be thoroughly investigated. These include the type of biomass, phenols, and reaction conditions. The potential application of Lignophenols in making common thermoplastic composites with Polypropylene/Polyethylene/Acrylonitrile butadiene styrene will be extensively evaluated and compared with those deriv

英文关键词： lignophenol；structrural control；Composites；Characterization；cell wall component