超分散剂分子结构设计的研究

A Study on Molecular Structure Design of Hyperdispersants

在对超分散剂的分子结构、链段种类和分子量等结构参数进行了合理分析的基础上 ,结合高分子有机化学、固体表面化学、胶体化学等多学科知识 ,总结出一套进行超分散剂分子结构设计的原则与方法。结果表明 ,A- B嵌段型超分散剂是一种最有效的超分散剂 ,在选择超分散剂的 A段时应根据纳米微粒的表面特征来进行选择 ,且 A段的结构单元长度应与纳米微粒的晶格大小接近 ,超分散剂的

In this paper,after rational analyzing the structural parameters of the hyperdispersants such as molecular structure,polymeric type and molecular weight,and considering the knowledge of high polymer chemistry,solid surface chemistry and colloidal chemistry,provides the basic principle and methods of the molecular structure design of the hyperdispersants.It is shown that the A-block-B hyperdispersants are the most efficacious hyperdispersants,the choice of A segment must base on the surface characteristic of the nano-particulates,and the length of A segment′s structure cell ought to close to the crystal lattice′s size of the nano-particulates,B segment of the hyperdispersants must be flexible and have enough molecular weight in order to pose the adsorption layer of enough thick at surface of the nano-particulates.