丙烯腈系大孔螯合树脂的合成及研究——Ⅰ.大孔PSA树脂的制备及结构研究

The macroreticular acrylonitrile-styrene-divinylbenzene copolymers (MR-PSA resins) have-been synthesized successfully by the suspension polymerization，using the linear polystyrene (PS)：linear pre-polystyrene (PPS) and mixture of PPS-cyclohexane as pore-creating agents．The morphological structure and porous structure of the MR-PSA resins have been studied by using scanning electron microscopy (SEM)，BET method and density-bottle method．From the micrography and porous-parameters of the MR-PSA resins．we found：When the crosslink-ing degree is same，the morphol9gical structure of the MR-PSA resins change from“gel—flake”into“gel-granule” with the increasing of the content of polymeric pore—creating agents ap-plied，and their porous structures are improved in the meantime．The morphological structure and porous structure of the MR—PSA resins are also dependent on the sort of polymeric pore—creating system，PPS—cyclohexane is the best in the three sorts of polymeric pore-creating sys-tem used．The copolymeric compositions and other properties of the MR—PSA resins have been studied by the FT-IR，TG-DTG and Kjeldahod’s method．     

丙烯腈系大孔螯合树脂的合成及研究——Ⅰ.大孔PSA树脂的制备及结构研究

氰基树脂是氮配位及氮氧协同配位型螯合树脂的重要母体之一,也可制备专一性吸附树脂和弱酸树脂,故丙烯腈系大孔树脂的合成及结构研究具有一定的理论与实际意义。线型高分子致孔时可得更大孔径的树脂,但因丙烯腈(AN)的沉淀聚合特性,聚丙烯腈(PAN)不能用于丙烯腈系树脂的致孔。 本文选用线型聚苯乙烯(PS)、PS-环己