Preparation And Research Of The Properties Of Copolyamide And Ethyl Cellulose Alloys Membrane Materials

In this paper, Membrane materials of copolyamide copolymer and cellulose alloys were prepared by means of solution blending and liquid-solid phase transformation . The compability and thermal stability of blending alloys were studied using viscometry ,FTIR, refractive index and TG. The interfacial seperation properties of alloys were characterized by means of the HPLC and Contact angle.The main contents of this article consist of following points:l.This paper introduces the situation of membrane separation technology, research of macromolecular membrane materials, the modification method of polymer and the theory of polymer compatibility. It also provide HPLC as a new method to token membrane materials which can extent HPLC application field.2.These membrane materials of PA-6/CA, PA-130/CA, PA-170/EC were prepared by the solution blending and liquid-solid transformation, The compability and thermal stability of blending alloys were studied using solubility parameter, viscometry, FTIR,refractive index and TG. The results show that PA-6/CA, PA-130/CA, PA-170/EC have a good compatibiltiy and in the PA-170/EC alloys , the thermal stability improved comparing to the pure PA-170.The interfacial separation properties and hydrophilicity of them were studied by means of HPLC and the contact angle.The result indicated that the hydrophilcity of these alloys increased, and PA-170/EC were superior to PA-170 at the hydrophilicity and the separation efficiency for nondissociable organic solute. 3.The miscibility and thermal stability of the EC/PVA blends were characterized by solubility parameter, viscometry , FTIR,refractive index...