聚苯乙烯-丙烯酸磁性高分子微球的制备

Polystyrene-acrylic Acid Copolymerization Magnetic Microspheres

磁性高分子微球兼具高分子微球的表面功能性和磁响应性,是一种新型生物高分子材料,在生物分离工程和生物医学工程中展现出独特的优势。聚苯乙烯-丙烯酸磁性高分子微球采用分散聚合法,以Fe3O4磁流体为磁核,苯乙烯-丙烯酸共聚物为高分子壳层,制备复合微球。通过形貌和粒径、分子量及固含量的分析,结果表明微球尺寸较小、粒径分布窄、化学稳定性好、表面含有丰富的功能基团,提高了磁性微球的极性。

Magnetic polymer microspheres have been new biopolymer materials with great advantages in bioseperating engineering, biomedicine engineering, as it has not only polymer functional groups, but also magnetic characteristics. Polystyrene-acrylic acid Copolymerization Magnetic Microspheres were synthesized by dispersion polymerization and Fe3O4 as cores and Polystyrene-acrylic acid copolymers as shells. The microspheres were characterized by SEM and size analysis, molecular weight and solid content measurement all indicate that microspheres are small in size, narrow in distribution, stable in chemistry construction and rich in functional groups on their surface, all of which increase the polarity of microspheres.