CAJ | 학술논문

采用物理改性方法-溶剂沉淀法对壳聚糖基高吸水性树脂进行改性,并对产物的结构与性能进行表征.结果表明:改性后树脂的吸水速率有了较大幅度的提高;用扫描电镜对树脂的微观结构进行观察,发现改性后树脂由表面的小孔状结构(平均孔径为8.1±3.0μm)变成了松散的大孔状结构(平均孔径为38.3±16.0μm),这使得水更容易从树脂的表面进入其内部,树脂的吸水速率大幅度地提高;以0.02mol/L的MOPS水溶液为流动相(pH=5.70),采用高效液相色谱法对改性前后树脂中丙烯酸单体残留量的测定表明,通过改性可明显降低单体的残留量.
채용물리개성방법-용제침정법대각취당기고흡수성수지진행개성,병대산물적결구여성능진행표정.결과표명:개성후수지적흡수속솔유료교대폭도적제고;용소묘전경대수지적미관결구진행관찰,발현개성후수지유표면적소공상결구(평균공경위8.1±3.0μm)변성료송산적대공상결구(평균공경위38.3±16.0μm),저사득수경용역종수지적표면진입기내부,수지적흡수속솔대폭도지제고;이0.02mol/L적MOPS수용액위류동상(pH=5.70),채용고효액상색보법대개성전후수지중병희산단체잔류량적측정표명,통과개성가명현강저단체적잔류량.
The solvent deposition method, which is a kind of physical method, was introduced to modify the superabsorbent polymer prepared from chitosan. The water absorption rate of the polymer was promoted greatly after the modification. It was found that the microstructure of the polymer was changed from the small pores (8.1±3.0μm)to the loose macro pores (38.3±16.0μm). Therefore the water could enter the inner part of the network more easily and the water absorption rate of the polymer was increased greatly. The amount of the residual acrylic acid was decreased greatly after modification, that was determined by high performance liquid chromatography (HPLC) with the aqueous solution of MOPS of 0.02mol/L (pH=5.70) as the mobile phase.