Comparison between structure and some properties of methacrylonitrile and acrylonitrile macroporous copolymers

Reactive Polymers Pub Date : 1994-10-01 DOI:10.1016/0923-1137(94)90011-6

Bożena N. Kolarz , Maria Wojaczyńska , Jolanta Bryjak , Barbara Pawłów

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引用次数: 11

Abstract

The structure and properties of macroporous methacrylonitrile (MAN) copolymers are compared with those of acrylonitrile (AN) copolymers. These copolymers are crosslinked with divinylbenzene (DVB) or trimethylolpropane triacrylate (TMPA). All these copolymers were obtained by suspension polymerization from the monomer mixtures containing a good solvent — cyclohexanol and hexadecane. The copolymers are porous and their porosity in the dry state is much higher than in the swollen one. The swelling of these copolymers causes the average pore size to decrease. The kind of crosslinking agent is the most significant factor influencing the porous structure of the copolymers. MAN and TMPA copolymers (MAN-T) have the smallest average pore size and the narrowest pore distribution. Methacrylonitrile copolymers are better sorbents than acrylonitrile copolymers. Their aminolysis by ethylenediamine is much more difficult than that of the latter, but they are both suitable for lipase immobilization.

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甲基丙烯腈与丙烯腈大孔共聚物的结构与性能比较

比较了大孔甲基丙烯腈(MAN)共聚物与丙烯腈(AN)共聚物的结构和性能。这些共聚物与二乙烯基苯(DVB)或三甲基丙烷三丙烯酸酯(TMPA)交联。所有这些共聚物都是由含有良好溶剂环己醇和十六烷的单体混合物通过悬浮聚合得到的。该共聚物具有多孔性，其在干燥状态下的孔隙率远高于膨胀状态。这些共聚物的膨胀导致平均孔径减小。交联剂的种类是影响共聚物多孔结构的最重要因素。MAN和TMPA共聚物(MAN- t)的平均孔径最小，孔分布最窄。甲基丙烯腈共聚物是比丙烯腈共聚物更好的吸附剂。乙二胺对它们的氨解要比后者困难得多，但它们都适合于脂肪酶固定化。

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