摘要
功能性超薄聚酰胺胶囊作为一类新型的合成仿生膜体,具有芯材体积大、膜壁强度高、表面积容易测定及双层膜稳定性好等优点.我们采用超薄聚酰胺作为支撑体,在多孔胶囊壁中含浸双亲分子P204[二-(2-乙基己基)磷酸酯],使P204分子在胶囊壁孔隙中形成复合双层结构,结果芯材的渗透速度呈现出受化学反应和外电场控制的功能性.
On soaking the ultrathin polyamine capsules in bis-(2-ethyl)phosphate(Abbraviated P204),we prepared the functional capsules with P204 in the porous film.P204 in the pores of the capsulewall existed in the form of bilayer structure.It acted as a prohibitor to the permeation of corematerial KCl and the permeable efficiency was decreased remarkbly.When we added Ca^(2+) to theexternal water phase,the hydrophilic headgroup of P204 reacted with Ca^(2+),and the multibilayerorder was spoiled.The permeable efficiency was increased.On treating with EDTA Ca^(2+)reactedwith EDTA,the permeable efficiency recovered its original value.Moreover,if the capsules wereput in an electric field,the permeable efficiency was increased because the multibilayer order wasspoiled with the orientation of the hydrophilic headgroup.On removing the electric field,thepermeable efficiency recovered its original value.Therefore,the capsules with P204 have reversiblefunctional permeation controlled by chemical reaction and electric field.
出处
《物理化学学报》
SCIE
CAS
CSCD
北大核心
1993年第6期832-835,共4页
Acta Physico-Chimica Sinica
基金
国家自然科学基金
关键词
聚酰胺
胶囊
膜
芯材渗透
功能性
Ultrathin polyamine capsule
Functional film
Permeation of core material