摘要
以吸水倍率为指标,研究了水中矿化度对具有互传网络结构的复合吸水材料吸水膨胀的影响。结果表明,在研究范围内,水中矿化度越高,外界电解质溶液中可动离子的浓度增加,材料内部与水体中离子浓度差降低,作为吸水膨胀动力的渗透压减弱,吸水倍率下降;阳离子对材料吸水膨胀的影响显著,碱土金属离子(二价)可以与吸水聚合物网络上的阴离子反应,因此对吸水膨胀的影响远大于碱金属离子(一价),同族阳离子对吸水膨胀的影响相差不大;同族阴离子对吸水膨胀的抑制作用相当,二价阴离子由于电离等因素,对复合吸水材料吸水膨胀的影响存在差异。
The effects of mineralization of water on the swelling of complex absorbing materials were studied by researching swelling multiple. The experiment results indicate that the mineralization of water is more, and then the swelling multiple is less for the reducing of osmotic as expansibility. The effect of the cation to the absorbing swelling of materials is more notable than the anion. The alkaline-earth metals ion can react with the anion linking on the absorbing polymers networks. So its effeot to swelling is more notable than alkali metals ions. For the agnate cations or anions, the effect to swelling is almost accordant. To the diatomie anion, for the ionization etc factors, the effect to swelling is different.
出处
《应用化工》
CAS
CSCD
2010年第1期96-98,共3页
Applied Chemical Industry
关键词
矿化度
吸水膨胀
复合吸水材料
阳离子
阴离子
mineralization
absorbing swelling
complex absorbing materials
cation
anion
