采用“预聚-扩链-中和”法合成的松香基聚氨酯（RPU）作为载体，以5-氟尿嘧啶（5-Fu）为模型药物，通过悬浮聚合法制备了负载5-Fu的松香基聚氨......

Linear or cross linked aqueous polyurethane dispersions with carboxyl Ag salt were prepared. TEM photos show that Ag +......