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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。
Firstly, the seaweed (A) was treated by temperature difference and activated by biological enzyme, and then grafted with acrylic acid (AA) and acrylamide (AM) to prepare degradable salt-tolerant SAP. The optimal synthesis conditions were investigated, and the products were degraded with compound enzyme. The results showed that the water absorbency and salt tolerance of the product were the highest when the number of freeze-thaw cycles was 2, the mass of the enzyme (E) / algae was 1.0%, the mass of the acrylic acid (AA) / acrylamide (AM) Good, absorb the ionized water up to 409g / g, suck 0.9% NaCl solution up to 112.7g / g, dewatering 96h after degradation of seaweed reached 93.3%. IR shows the presence of product grafts, DSC shows that the product has good thermal properties and SEM shows that the product is porous.