基于原位溶胶-凝胶法的木材-有机-无机杂化纳米复合材料可控制备规律与界面结合机制

项目名称： 基于原位溶胶-凝胶法的木材-有机-无机杂化纳米复合材料可控制备规律与界面结合机制

项目编号： No.31300479

项目类型： 青年科学基金项目

立项/批准年度： 2014

项目学科： 农业科学

项目作者： 李永峰

作者单位： 山东农业大学

项目金额： 22万元

中文摘要： 为克服传统有机聚合物改性的木材热稳定性差、脆性高和无机化合物改良木材难以有效赋予力学强度的不足，受有机-无机杂化纳米复合材料启发，本研究提出了"利用有机体和无机体在木材天然孔隙内与木材基质原位杂化纳米复合方法，探索制备兼具有机聚合物和无机化合物改性木材优点的高性能新型木材-有机-无机杂化纳米复合材料"的技术构思，拟通过分子结构设计理论构建有机功能性单体体系和无机体系，并采用原位溶胶-凝胶法，优化调控有机体与无机体的相分离程度及其与木材的复合界面，借助三者的均匀杂化纳米复合协同赋予木材高强力学性能和优异耐久性，及特定结构形态的功能性。利用现代分析手段结合材料性能测试，探明木材-有机-无机杂化纳米复合材料的可控制备规律及有机聚合物、无机体和木材彼此间的界面结合机制，为可控制备高性能与功能特性改良木材提供重要的科学依据，对探索木材性能改良新途径、丰富木质复合材料理论体系具有创新意义。

中文关键词： 木材；有机-无机纳米复合材料；溶胶-凝胶法；单体；纳米二氧化硅

英文摘要： Ordinarily, the organic polymer modified wood possesses poor thermal stability and higher brittleness, and the inorganic compounds are difficult to separately endow wood with satisfied mechanical strength. With the purpose of overcoming these disadvantages, and inspired from the organic-inorganic hybrid nanocomposites, the project proposes a novel scientific research proposal idea. It is investigating the preparation of a novel wood-organic-inorganic hybrid nanocomposite with excellent properties combined the advantages of both organic polymer and inorganic compounds modified wood via the in-situ uniform nanohybridizaiton of organic and inorganic moieties within the natural pores of wood. It intends to constitute the organic functional monomer system and the inorganic system by designing the molecular structure, and to optimizely control the degree of phase separation between organic and inorganic components and their bonding interfaces with wood by sol-gel process, and to synergisticly endow wood with high-strength mechanical properties and excellent durability as well as functions under specific structures and morphologies by homogeneous nanohybridization of the three phases. Modern analysis means and material properties evaluation are combined to reveal and highlight the controllable preparation law of the na

英文关键词： wood；organic-inorganic nanocomposite；sol-gel；monomer；nano SiO2