Method for preparing polyamide composite membrane containing hyperbranched polyamide

• Main Authors: WEN HAIMENG, LI SHENGLAN
• Format: Patent
• Language: Chinese; English
• Published: 18.06.2024
• Subjects: CHEMISTRY; METALLURGY; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; SEPARATION; TRANSPORTING; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

The invention relates to a preparation method of a polyamide composite membrane, in particular to a preparation method of a polyamide composite membrane containing hyperbranched polyamide. Specifically, the invention provides the method for preparing the polyamide composite membrane containing the amino-terminated hyperbranched polyamide, the amino-terminated hyperbranched polyamide and a sulfonated polymer are subjected to blending phase inversion to prepare a support body, and the surface of the support body is modified by a modification solution of multi-acyl chloride, so that the polyamide composite membrane containing the amino-terminated hyperbranched polyamide is obtained. And performing interfacial polymerization again to form the polyamide composite membrane. 本发明涉及一种聚酰胺复合膜的制备方法，尤其涉及一种以含超支化聚酰胺的聚酰胺复合膜的制备方法。具体的，本发明提出了一种制备含端氨基超支化聚酰胺的聚酰胺复合膜的方法，通过将端氨基超支化聚酰胺和磺化聚合物进行共混相转化制备成支撑体，并通过多元酰氯的改性溶液对支撑体表面进行修饰，继而再次界面聚合形成聚酰胺复合膜。