马来酸酐等离子体聚合改性聚丙烯多孔膜的表面结构与亲水性  

Surface Structure and Hydrophilicity of Polypropylene Porous Membranes Modified by Maleic Anhydride Plasma Polymerization

作　　者：马骏[1] 王伟[1] 黄健[1] 王晓琳[2] 

机构地区：[1]南京工业大学材料学院,江苏南京210009 [2]清华大学化学工程系,北京100084

出　　处：《高分子材料科学与工程》2009年第1期16-18,共3页Polymer Materials Science & Engineering

基　　金：973资助项目(2003CB615701);国家自然科学基金资助项目(20476045)

摘　　要：以马来酸酐为单体,采用低温等离子体聚合的方法对聚丙烯(PP)多孔膜的表面进行改性。红外光谱(FT-IR)和扫描电镜(SEM)等结果表明,马来酸酐以双键聚合,同时伴随着酸酐的开环。低处理功率时以表面聚合为主,酸酐结构破坏较轻,延长聚合时间可以提高聚合量;高处理功率时以气相聚合为主,酸酐结构的破坏加剧,易产生交联结构。马来酸酐等离子体聚合物水解后可产生羧基,但水解作用并不完全,膜表面的亲水性与等离子体聚合条件及聚合物结构紧密相关。Polypropylene porous membranes were surface modified by the low-temperature plasma polymerization technique with maleic anhydride as the monomer. The surface structure and hydrophilicity were analyzed by fourier transform infrared spectroscopic （ FT- IR）, scanning electron microscope （SEM） and contact angle methods. Maleic anhydride is found to polymerize via double bond opening under plasma treatment, accompanied by the ring-opening of anhydride ring.Surface polymerization phenomenon is observed under the lower plasma power, when most of anhydride structures are maintained and the polymer amount increases with the plasma time. However, gaseous polymerization occurs under the higher plasma power, when anhydride structures tends to be destroyed and cross- linking structures are induced in plasma polymers. Carboxyl groups are produced on the hydrolyzed surfaces of modified membrane although the hydrolysis reactions are not complete. The surface hydrophilicity of the modified membrane is found depending on both plasma conditions and surface structures.

关 键 词：等离子体聚合 马来酸酐 聚丙烯多孔膜 亲水化改性 

分 类 号：TB383[一般工业技术—材料科学与工程]