Ag2O nanoparticle clusters coated with porous gelatin-g-PMMA copolymer

作者：Liu Ying; Liu Xiaoheng; Wang Xin^*; Wu Xiaodong; Yang Xujie; Lu Lude

来源：Current Applied Physics, 2010, 10(3): 776-782.

DOI：10.1016/j.cap.2009.09.014

• Ordered porous copolymers
• Ag2O/gelatin-g-PMMA
• Controlled releasing

Herein a special nanoparticle cluster coated with a porous copolymer is designed and prepared. At first, Ag2O nanoparticles (secondary particles) were fabricated in gelatin solution by a facile chemical approach. Then these nanoparticles were entrapped in a copolymerization system containing gelatin, methyl methacrylate (MMA), an initiator, and using water as a solvent. The nanoparticle clusters coated with porous gelatin-g-PMMA copolymer (Ag2O/gelatin-g-PMMA) were prepared by grafting methyl methacrylate onto gelatin, followed by coating solidification. One significant feature for our approach is that every Ag2O aggregated cluster has been coated with porous gelatin-g-PMMA copolymer film in a unique way, and the Ag2O nanoparticle could penetrate and escape from the coating freely in water by ultrasonication. As a result, this study provides a new approach to prepare monodispersed nanoparticles by ordered porous copolymers with controlled releasing.

• 出版日期2010-5
• 单位南京理工大学