Research Development of Gradient Polymer Blend Materials

Gradient polymer blend material recently received much concern, because of its advantages, such as good combination properties and simple preparation. The research progress of gradient polymer blend material in the past decade is summarized in this paper. Methods of preparing gradient polymer blend material respectively in solution, melting and latex blend systems are introduced in detail, such as dissolution-diffusion method, electric induction method, temperature gradient method. Related theories of predicting how the dispersed phase or polymer compositions form gradient morphology in different blend systems are introduced, and the influencing factors of forming gradient structure are discussed. The development trend and main research topics of gradient polymer blend material in the future are also suggested.