Micro-nano materials, products obtained by covalently modifying the surfaces of micro/nano materials with hydrophilic materials, and methods for making the same. The micro/nano materials on the surfaces have carboxyl groups or/and pro-carboxyl groups which are converted into their active esters. The products are covalently modified by forming amide bonds between the active esters on the surfaces and the modification agents; where the modification agents are hydrophilic compounds and/or hydrophilic polymers bearing primary and/or secondary aliphatic amines. Monomers bearing carboxyl groups and/or pro-carboxyl groups are used to produce an adequate number of carboxyl groups and/or pro-carboxyl groups on the surface of a polymer material to be modified. The carboxyl groups and/or pro-carboxyl groups are converted into active esters. A reasonably-sized modification agent bearing primary and/or secondary amines, zwitterions and hydrophilic linear spacer arms is used to form amide bonds and obtain a covalently modified surface layer.
微纳米材料,通过用亲
水材料共价修饰微/纳米材料表面获得的产品,以及制备这些产品的方法。表面上的微/纳米材料具有羧基或/和前羧基,这些羧基或前羧基被转化为它们的活性
酯。通过在表面上的活性
酯和修饰剂之间形成
酰胺键,共价修饰的产品;其中修饰剂是带有一次和/或二次
脂肪胺基的亲
水化合物和/或亲
水性
聚合物。使用带有羧基和/或前羧基的单体来产生足够数量的羧基和/或前羧基,以便在待修饰的
聚合物材料表面上形成。将羧基和/或前羧基转化为活性
酯。使用合理大小的带有一次和/或二次胺基、带有带电离子和亲
水性线性间隔臂的修饰剂来形成
酰胺键,并获得共价修饰的表面层。