A Study on the Modification of Polyacrylonitrile by Copolymerization with Diacetone Acrylamide

Diacetone Acrylamide를 공중합시킨 Polyacrylonitrile 의 개질에 관한 연구

To improve the dyeability and hygroscopicity of polyacrylonitrile, acrylonitrile monomer was copolymerized with diacetone acrylamide and the prepared copolymer was condensed with ethylene diamine to give Schiff's base-formed copolymer. The dyeability to acid dye of the modified copolymers was improved. And dye absorbed in copolymers was increased linearly in proportion to the mole percentage of diacetone acrylamide in the feed. The moisture regain of modified polyacrylonitrile was increased up to 5.4% when 10 mole percentage of diacetone acrylamide was copolymerized.

Polyacrylonitrile 의 염색성과 흡습성을 개선하기 위하여 diacetone acrylamide와 acrylonitrile을 공중합시키고 또 그 공중합체를 ethylene diamine과 반응시켜 Schiff's base 의 형성과 함께 측쇄말단에 primary amine group을 도입시켰다. 공중합체와 Schiff's base-formed copolymer의 산성염료에 대한 염색성을 고찰한 결과 산성염료에 대한 염색성이 증진되었으며 중합시 diacetone acrylamide monomer의 양이 증가함에 따라 염료흡착량이 직선적으로 증가하였다. 한편 흡습성은 중합시 diacetone acrylamide monomer의 양이 10%(몰분율)일 때 얻어진 공중합체의 수분율이 5.4%까지 증가하는 것을 보였다.