Files in this item



application/pdf3202178.pdf (3MB)Restricted to U of Illinois
(no description provided)PDF


Title:Polymer Brushes for Molecular Transport
Author(s):Tu, Huilin
Doctoral Committee Chair(s):Paul Braun
Department / Program:Materials Science and Engineering
Discipline:Materials Science and Engineering
Degree Granting Institution:University of Illinois at Urbana-Champaign
Subject(s):Biology, Molecular
Abstract:PNIPAAm chains are tethered onto silica particles via surface-initiated polymerization. Thermal annealing slightly improved the crystallinity of the colloidal assembly. Video microscopy of the two-dimensional diffusion of these colloids suggested that PNIPAAm brushes greatly improve the stability of the colloidal system. A three-fold increase in diffusion coefficient is observed when the temperature is increased from 22°C to 39°C. The LCST transition of PNIPAAm plays an important role in the diffusion of the colloids, and the interdigitation between PNIPAAm chains may have slowed down the colloidal diffusion at room temperature.
Issue Date:2005
Description:106 p.
Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 2005.
Other Identifier(s):(MiAaPQ)AAI3202178
Date Available in IDEALS:2015-09-25
Date Deposited:2005

This item appears in the following Collection(s)

Item Statistics