摘要：Silica sol,called silica hydrosol,is a water sol system contained silicon dioxide,with particle size from 1 nm to more than 10 nm The present paper focuses on the preparation of silica sol of high surface area and good stability by resin exchange,and its performance.

摘要：高分子与药物偶联是靶向药物研究中的重要方向之一。此项研究探讨了高分子偶联药物的设计原则 ,并对近年高分子偶联药物的研究现状进行了综述。