聚乙烯亚胺水溶液，Poly(ethyleneimine) solution [PEI]；average Mn ~1,800 by GPC, average Mw ~2,000 by LS, 50 wt. % in H2O

Poly(ethyleneimine) (PEI) is a positivelycharged polymeric amine with a linear or branched structure. It has chelating properties with a variety of metal ions. It is highlysoluble in water and behaves as an effective base in aqueous solutions. Due toits superior physicochemical properties, it is widely used in the field ofbiomedicine, water purification, bioimaging, gene delivery, and self-healingmaterials.

 

洗涤剂、粘合剂、水处理、印刷油墨、染料、化妆品和造纸业、助粘剂、层压底漆、固色剂、絮凝剂、阳离子分散剂、稳定增强剂、表面活性剂、螯合剂以及醛类和氧化物清除剂。

Poly(ethyleneimine) solution can be used for surface modification of cation exchange resins. The modified resins exhibited improved selectivity towards transition elements. Due to repulsion effects within the cationic layer, the selectivity for alkaline ions decreases. As a result, this resin can be applied to purify industrial waste by column sorption.

It can be used as a precursor to prepare polyelectrolyte multilayers for the promotion of cell adhesion and growth on implant surfaces.

PEI can act as a reactive template and stabilizing agent in the preparation of metal nanoparticles in aqueous media. The amino groups in the PEI can coordinate with metal ions dissolved in water and reduce their aggregation capability. This results in the formation of smaller nanoparticles.

 

支化聚合物