生物酶活化海藻制备可降解型保水剂

Enzyme activated alga and preparated degradable super absorbent polymer

首先对海藻(A)进行温差破壁及生物酶活化处理,再接枝丙烯酸(AA)、丙烯酰胺(AM)制备可降解耐盐型保水剂。考察合成最佳条件,用复配酶对产品进行降解试验。结果表明:当冷冻-融熔次数是2,酶质量(E)/海藻质量(A)=1.0%,丙烯酸质量(AA)/丙烯酰胺质量(AM)=4时产品吸水能力及耐盐性最佳,吸去离子水可达409g/g、吸0.9%NaCl溶液可达112.7g/g,保水剂降解96h后海藻降解率达93.3%。IR表明产品接枝性的存在,DSC表明产品热性能良好,SEM表明产品呈多孔性。

First, alga was activated through breaking cell wall technic by varying temperature and biologic zyme technic. Then haloduric and degradable superabsorbent polymer was synthesized through acrylic acid and acrylamide grafting with alga. The optimal synthesis condition was seeked. The superabsorbent polymer was degraded by built zyme with starch zyme and cellulose zyme. The optimal condition is that the times of freezing-melting is 2, E/A= 1.0%, AA/AM= 4. The absorption of product to distilled water is 409g/g , absorption to 0. 9%NaCl solution is 112.7g/g , degradation ratio of alga in polymer is 93. 3% in 96h. The grafting structure was characterized by IR , thermal stability was indicated by DSC and porousness and sponginess was reflected by SEM.