摘要
基于吸附动力学模型,以丙烯酸类树脂为研究对象进行吸附动力学分析。吸附动力学数据的拟合结果显示:无论静态吸湿还是动态吸湿,丙烯酸类树脂的吸湿均遵循准二级吸附动力学模型,即影响吸湿率的主要因素为湿度和树脂自身的吸附性能。静态吸湿平衡实验表明:在封闭空间内丙烯酸-甲基丙烯酸-丙烯酰胺三元共聚物P(AA-MA-AM)的饱和吸湿率最高达0.049 g/g;其静态吸附速率按快慢顺序排列为:聚丙烯酰胺(PAM),丙烯酸-甲基丙烯酸共聚物P(AA-MA),丙烯酸-丙烯酰胺共聚物P(AA-AM),P(AA-MA-AM),聚丙烯酸钠(PAA)。动态吸湿平衡实验表明:开放空间中P(AA-AM)吸湿性能最佳,其饱和吸湿率达0.92 g/g;其动态吸附速率按快慢顺序排列为:PAM,P(AA-AM),P(AA-MA),P(AA-MA-AM),PAA。再生试验表明,经再生处理有机高分子吸湿材料的平衡吸湿率下降不超过2%,性能依旧稳定。
Acrylic acid resins were analysed based on adsorption kinetics model.Under the circumstances of static moisture Absorption and dynamic moisture Absorption,the adsorption kinetics data showed the moisture adsorption process of organic moisture Absorbents could be better described by the pseudo-second-order model.The properties of organic moisture Absorbents were influenced by two main factors,which were relative moisture and adsorption properties of polymer resin itself.Equilibrium experiments of static moisture Absorption demonstrated that the maxmal moisture Absorbency of P（AA-MA-AM） reached 0.049 g/g in enclosed space.The sequence of static Absorption rate was as follows：PAM,P（AA-MA）,P（AA-AM）,P（AA-MA-AM）,PAA.Equilibrium experiments of dynamic moisture Absorption indicate that the highest moisture Absorbency of P（AA-AM） was 0.92 g/g.The sequence of dynamic Absorption rate was as follows： PAM,P（AA-AM）,P（AA-MA）,P（AA-MA-AM）,PAA.Regeneration experiments proved that equilibrium moisture Absorbency of organic moisture Absorbents decreased no more than 2% after regeneration treatment and its property was still steady.
出处
《吉林大学学报（工学版）》
EI
CAS
CSCD
北大核心
2011年第5期1317-1321,共5页
Journal of Jilin University:Engineering and Technology Edition
基金
国家自然科学基金项目(31070841)
关键词
有机高分子吸湿材料
静态吸湿
动态吸湿
吸附动力学
organic moisture Absorbents
static moisture Absorption
dynamic moisture Absorption
adsorption kinetics
