Download or read book Synthesis and Aggregation Behavior of Poly(propylene Oxide)-based Amphiphilic and Triphilic Block Copolymers written by Samuel Oppong Kyeremateng and published by . This book was released on 2010 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Novel PPO-based amphiphilic diblock copolymers and triphilic multiblock copolymer analogues of the architectures BA, CBA, CAB, and CABAC have been successfully synthesized by combination of atom transfer radical polymerization (ATRP) and copper(I)-catalyzed alkyne-azide cycloaddition (CuAAC) 'click' reaction. The A, B, and C components of the block copolymers comprise of hydrophilic poly(glycerol monomethacrylate) (PGMA), lipophilic poly(propylene oxide) (PPO), and perfluorocarbon segment, respectively. Molar mass values of the polymers were obtained from 1H and 19F NMR spectroscopy measurements. Size exclusion chromatography (SEC) analysis confirmed low polydispersities (1.2 ≤ Mw/Mn ≤ 1.5) of the polymers. The aggregation of the triphilic block copolymers analogues, CBA, CAB, and CABAC, in aqueous solution showed intriguing structures. The structures they formed were governed by the strong immiscibility between the lipophilic PPO blocks and the fluorophilic perfluorocarbon segments as well as the blocks sequence and length. Compartmentalized structures were observed due the strong immiscibility between the PPO block and the perfluorocarbon segment.