Journal article
Tunable stimulus-responsive friction mechanisms of polyelectrolyte films and tube forests
Soft matter, v 8(33), pp 8642-8650
01 Jan 2012
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
The pH-responsive frictional behavior of layer-by-layer assembled poly(allylamine hydrochloride) and poly(acrylic acid) multilayers is quantified in different geometric forms of a continuous planar film and anisotropic tube forests. A mechanistic change from surface adhesion dominated frictional behavior to visco/poroelasticity-governed shear occurs for the planar film upon pH-stimulus. This pH-dependent friction can be further controlled by the discrete anisotropic geometry of the tube forest, which introduces additional friction due to asymmetric deformation of the discrete bending of the tubes during lateral motion. This study provides important insights into the design of polyelectrolyte-based coatings with a wide range of controllable surface frictional properties, tuned via interactions between the inherent stimulus-responsive material behavior and the microgeometry of the anisotropic tube forest.
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Details
- Title
- Tunable stimulus-responsive friction mechanisms of polyelectrolyte films and tube forests
- Creators
- Lin Han - MIT, Dept Mat Sci & Engn, Cambridge, MA 02139 USAJie Yin - Massachusetts Institute of TechnologyLifeng Wang - Clarkson UniversityKhek-Khiang Chia - Massachusetts Institute of TechnologyRobert E. Cohen - Massachusetts Institute of TechnologyMichael F. Rubner - Massachusetts Institute of TechnologyChristine Ortiz - Massachusetts Institute of TechnologyMary C. Boyce - Massachusetts Institute of Technology
- Publication Details
- Soft matter, v 8(33), pp 8642-8650
- Publisher
- Royal Soc Chemistry
- Number of pages
- 9
- Grant note
- DMR-0819762 / National Science Foundation MIT Center for Materials Science and Engineering W911NF-07-D-0004 / MIT Institute for Soldier Nanotechnologies (Army Research Office) N00244-09-1-0064 / National Security Science and Engineering Faculty Fellowship
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- School of Biomedical Engineering, Science, and Health Systems
- Web of Science ID
- WOS:000307021300013
- Scopus ID
- 2-s2.0-84864660418
- Other Identifier
- 991019176642504721
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InCites Highlights
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- Collaboration types
- Domestic collaboration
- Web of Science research areas
- Chemistry, Physical
- Materials Science, Multidisciplinary
- Physics, Multidisciplinary
- Polymer Science