采用悬浮聚合方法合成了多孔交联聚苯乙烯微球,研究发现微球的粒径与分散剂含量、水油比、搅拌速度和成孔剂有关,而微球的孔径与成孔剂的种类和含量有关.增加分散剂的用量,提高水油比和加快搅拌速度都能导致微球的粒径减小.微球的孔径和粒径均随着成孔剂与聚合物溶度参数差值变大而增加.通过改变以上条件得到粒径为100～300 μm和孔径为8～36 nm的交联度为27％的多孔交联聚苯乙烯微球,并利用光学显微镜、场发射扫描电子显微镜(SEM)和氮气吸附解吸法对微球进行了相应的表征.得到的微球在固相合成载体中有一定的应用前景.
参考文献
| [1] | Cesare Gennari;Chiara Longari;Stefano Ressel;Barbara Salom;Umberto Piarulli;Simona Ceccarelli;Antonia Mielgo.Synthesis of Combinatorial Libraries of Vinylogous Sulfonamidopeptides (vs-Peptides)[J].European journal of organic chemistry,199811(11):2437-2449. |
| [2] | C.T.Lima Luz;F.M.B.Coutinho.The influence of the diluent system on the porous structure formation of copolymers based on 2-vinylpyridine and divinylbenzene.Diluent system:II-n-heptane/tolene[J].Polymer: The International Journal for the Science and Technology of Polymers,200111(11):4931-4938. |
| [3] | Coutinho FMB.;Rabelo D.;La Torre ML..Cosolvency effect on the porous structure formation of styrene divinylbenzene copolymers[J].European Polymer Journal,19985/6(5/6):805-808. |
| [4] | Ahmed M;Malik MA;Pervez S;Raffiq M.Effect of porosity on sulfonation of macroporous styrene-divinylbenzene beads[J].European Polymer Journal,20048(8):1609-1613. |
| [5] | Okay O..Macroporous copolymer networks[J].Progress in Polymer Science,20005(5):711-779. |
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