Semipermeable membrane consisting of a polymer, embodying I-S03-] groups; said [-SO3-] groups may be present in the continuous polymer chains or may be present in links between continuous polymer chains.
The membrane may have been formed either by in situ coagulation of a polymer solution in the pores of a porous substrate or by interfacial crosslinking of a water-soluble phenolic polymer with a sulphonyl halide compound to form an [-SO3-] groups embodying polymer in the pores of a substrate.
由聚合物组成的半透膜,含有 I-S03-] 基团;所述 [-SO3-] 基团可以存在于连续聚合物链中,也可以存在于连续聚合物链之间的链接中。
这种膜可以通过聚合物溶液在多孔基材孔隙中的原位凝结形成,也可以通过
水溶性
酚醛聚合物与磺
酰卤化合物的界面交联在基材孔隙中形成含有[-SO3-]基团的聚合物而形成。