標題: Transformation of Polymer Nanofibers to Nanospheres Driven by the Rayleigh Instability
作者: Huang, Yu-Chieh
Fan, Ping-Wen
Lee, Chih-Wei
Chu, Chien-Wei
Tsai, Chia-Chan
Chen, Jiun-Tai
應用化學系
Department of Applied Chemistry
關鍵字: annealing;nanofibers;nanospheres;PMMA;templates
公開日期: 24-Apr-2013
摘要: We study the thermal annealing effect of poly(methyl methacrylate) (PMMA) nanofibers made from anodic aluminum oxide (AAO) templates and their transformation to PMMA nanospheres. The PMMA nanofibers are prepared by wetting an AAO template with a 30 wt % PMMA solution, followed by the evaporation of the solvent, After the AAO template is removed by a weak base, the PMMA nanofibers are thermally annealed in ethylene glycol, a nonsolvent for PMMA. The surfaces of the nanofibers undulate and transform into nanospheres, driven by the Rayleigh instability. The driving force for the transformation process is the minimization of the interfacial energy between PMMA nanofibers and ethylene glycol. The transformation times at higher annealing temperatures are shorter than those at lower annealing temperatures. This study provides a facile route to prepare polymer nanospheres which are not accessible by other traditional methods.
URI: http://dx.doi.org/10.1021/am400029j
http://hdl.handle.net/11536/21664
ISSN: 1944-8244
DOI: 10.1021/am400029j
期刊: ACS APPLIED MATERIALS & INTERFACES
Volume: 5
Issue: 8
起始頁: 3134
結束頁: 3142
Appears in Collections:Articles


Files in This Item:

  1. 000318205000042.pdf