欢迎您！东篱公司
退出
-
申报数据库
-
立项数据库
-
成果数据库
-
项目获奖数据库
中文摘要：
以海藻酸钠（SA）与钠化累托石（Na^＋REC）为原料通过水溶液法制备插层纳米复合材料（SA／Na^＋REC），再以此作为第二组分加入到部分中和的丙烯酸中进行接枝共聚制备SA／Na^＋REC-g—PAA复合高吸水性树脂。研究了SA／Na＋REC复合材料用量、引发荆用量、交联剂用量、中和度等影响高吸水性树脂吸水性能的主要因素。结果表明，产品吸水率达到657g／g，吸盐水率达到118g／g，与同工艺条件的SA-g—PAA高吸水性树脂相比，吸水率提高136g／g、吸盐水率提高，14g／g、凝胶模量提高0．5×10^-5Pa、干树脂在功率为320W紫外灯照射30d的失重率减少4．2％、水凝胶在70℃，8h后保水率提高4．6％，且吸水速率快，避免了在吸水过程中产生面团现象。XRD表明Na^＋REC在接枝共聚物基体中部分被剥离，形成插层型复合高吸水性树脂，SEM显示SA／Na^＋REC-g-PAA复合高吸水性树脂具有多孔的层状结构。
英文摘要：
Sodium alginate/Na-rectorite composite was synthesized by water solution processing. Then SA/Na^＋ REC-g-PAA superabsorbent composite was synthesized by graft copolymerization using SA/Na^＋REC and partially neutralized acrylicacid. The influence of amounts of SA/Na^＋REC, initiator, crosslinking agent, neutralization degree of acrylic acid and reaction temperature to the absorbency of the superabsorbent composite was discussed. The results showed that the distilled water absorbency of SA/Na^＋REC-g-PAA is 657g/g, and the saline water absorbency is 118g/g. Compared to SA-g-PAA with same process conditions, the water absorbency of SA/Na^＋REC-g-PAA increased by136g/g, the saline water absorbency increased by 14g/g, the gel modulus increased by 0.5 × 10^-5Pa, the mass loss ratio of dry resin by untraviolated radiation for 30 days, the radiated power was 320W, decreased by 4.2%, the retantion ability decreased by 4.6% after 8h heating at 70℃ and it absorbed water more quckly without dough phenomenon. XRD indicated that partial Na-rectorite were striped and the interaction was formed in SA/Na^＋ REC-g-PAA. SEM showed that SA/Na^＋ REC-g-PAA had microporous and laminate structure.
同期刊论文项目
同项目期刊论文
期刊信息
位置：