中文摘要：

通过分子复合，结合固相剪切碾磨技术（S^3M）制备了热塑性聚乙烯醇（PVA）／纳米羟基磷灰石（n-HA）复合材料，系统研究了复合材料的结构与性能．结果表明，磨盘力化学反应器强大的混合和力活化功能，增强了n-HA与PVA基体间氢键和配位作用，实现了n-HA粒子在PVA基体中的良好分散，提高了PVA的初始热分解温度，使复合材料具较宽热塑加工窗口，并在一定程度上阻碍了水分子渗透进入材料内部，降低了复合材料达到平衡溶胀所需时间和平衡溶胀率，提高了复合材料的耐水性；良好分散的n-HA粒子可在材料受外力作用时起到很好的应力分散，有效增强PVA基体，提高了复合材料的力学性能．

英文摘要：

The poly （vinyl alcohol）/nano-hydroxyapatite （mPVA/n-HA） composites were prepared by thermal processing of PVA, and the solid state shear milling technology （S3M） developed in SKLPME was adopted to improve the dispersion of n-HA in PVA matrix. The structure and properties of the composites were also studied. The results showed that the hydrogen bonds or [ HO-]-Ca2＋[-OH ] between n-HA and PVA were enhanced under the strong effects of mixture, dispersion and activation of pan-milling equipment, which could effectively improve the interracial strength between n-HA and PVA, and increased the dispersion of n-HA particles in PVA matrix. The strong interactions between n-HA and PVA largely increased the initial thermal decomposition temperature of PVA, and endowed the composites with large thermal processing windows. These interactions could also act as the physical crosslinking points in system,thus inhibited the penetration of water into the composites, and shortened the time to the equilibrium swelling, i. e. the water resistance of the composites was improved. The well dispersion of n-HA particles in matrix could efficiently exert their reinforcement effect on PVA,thus improved the tensile strength and elongation of the composites at break,e. g. ,the tensile strength and elongation of the composite with 20 wt% n-HA were 27.7 MPa and 569.7% , respectively increased by 110% and 76% compared with mPVA.