摘要： For a variety of multicomponent polymers including simple blends, block copolymers, IPNs, lonomer blends, homopolymer/block copolymer blends and composites composed of Inorganic particles and polymer matrix, the current situation and trend of introducing specific Interactions and its effect on the misclbility and properties of the systems have been reviewed with emphasis on the recent results obtained in the author' s laboratory.