期刊
MACROMOLECULAR CHEMISTRY AND PHYSICS
卷 219, 期 15, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/macp.201800210
关键词
multichain aggregates; prolate nanoassembly; random copolymers; single-chain self-assembly; small angle neutron scattering
资金
- University of Pisa (fondi Progetti di Ricerca di Ateneo) [PRA_2017_17]
Two amphiphilic random copolymers, PEGMAx-co-FAy (x=90 and 70mol%), are synthesized by ATRP and their solutions are investigated as a function of solvent, concentration, and temperature by DLS and SANS analyses. Both copolymers self-assemble in nanostructures by single-chain folding in water solutions over a wide range of temperatures. The values of the DLS hydrodynamic radius and the SANS radius of gyration are found to be approximate to 4nm and approximate to 3.4-3.7nm, respectively. Moreover, SANS shows the self-folded nanoassemblies to be prolated spheroids with a ratio of polar/equatorial axes of approximate to 5:1 for PEGMA90-co-FA10 and approximate to 2:1 for PEGMA70-co-FA30. On heating above a critical temperature T-c, multichain microassemblies are formed that revert back to nanoassemblies on cooling below T-c. This temperature-responsive transition is fully and sharply reversible.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据