中文摘要：

以聚乙烯醇（PVA）为分散剂，过氧化苯甲酰（BPO）为引发剂，采用水相悬浮聚合法合成甲基丙烯酸正丁酯（BMA）均聚物；在双螺杆挤出机中，基于反应挤出机理，使BMA均聚物熔体与含引发剂（BPO）的单体甲基丙烯酸β羟乙酯（HEMA）发生反应，利用HEMA结构单元的氢键作用于大分子间构建物理交联结构，同时采用熔融纺丝法将反应熔体制备成具有三维网状交联结构的甲基丙烯酸酯系共聚物纤维；借助傅立叶变换红外光谱仪（FTIR）、扫描电子显微镜（SEM）、差示扫描量热仪（DSC）等测试仪器以及吸附性能、凝胶分率测试，研究纤维样品的结构与相关性能。结果表明，HEMA与BMA均聚物的质量比为3：7时所得纤维综合性能最佳，对有机液体如三氯乙烯和三氯甲烷的饱和吸附量分别可达12．16和10．97g／g。

英文摘要：

N-butyl methacrylate （BMA） homopolymer was synthesized by aqueous suspension polymerization using polyvinyl alcohol as a dispersing agent and benzoyl peroxide （BPO） as an initiator. BMA homopolymer melt and hydroxyethyl methacrylate （HEMA） monomer containing the initiator （BPO） were reacted in the twin-screw extruder by means of the reactive extrusion. Polymethacrylate fiber with three-dimensional network crosslink structure which was built by hydrogen bonding interactions of hydroxyl groups of HEMA in the mac romolecules was prepared via melt spinning. The microstructure and related properties of the fiber samples were characterized through absorption performance test, gel fraction test, Fourier transform infrared spectros- copy （FT-IR）, field emission scanning electron microscopy （FESEM） and differential scanning calorimetry （DSC）. The results show that the comprehensive properties of the obtained fiber are best when the mass ratio of HEMA monomer to BMA homopolymer was equal to 3 ： 7, and the saturated absorbency for trichloroethyl- ene and chloroform are 12.16 and 10.97g/g, respectively.