Online citations, reference lists, and bibliographies.
← Back to Search

Micromechanical Properties Of “Smart” Gels: Studies By Scanning Force And Scanning Electron Microscopy Of PNIPAAm

T. Matzelle, D. Ivanov, D. Landwehr, L. Heinrich, Ch Herkt-Bruns, R. Reichelt, N. Kruse
Published 2001 · Chemistry

Cite This
Download PDF
Analyze on Scholarcy
Share
Mechanical properties of PNIPAAm [poly-(N-isopropylacrylamide)] gel surfaces were studied using scanning force microscopy (SFM) in air or in water at various temperatures below and above the reversible phase transition at ∼33 °C. SFM images of the gel surface were compared with those obtained in dry, swollen, and collapsed states using field emission scanning electron microscopy (FESEM). Images of SFM and FESEM of the dry gel surface revealed similar structural features. Force vs displacement curves were measured with both spherical (micrometer sized) and commercial probes. Indentation of the gel surface as a function of the probe load was evaluated to determine the local elastic modulus. For the swollen state at 10 °C, Young's modulus was found to be more than 100 times lower than for the collapsed state at 35 °C.



This paper is referenced by
10.1016/J.POLYMER.2003.07.006
Fast-responsive semi-interpenetrating hydrogel networks imaged with confocal fluorescence microscopy
Marianne E. Harmon (2003)
10.1039/C3SM27726G
Impact of solvation on equilibrium conformation of polymer brushes in solvent mixtures
R. Espinosa-Marzal (2013)
10.1021/MA200562K
Mechanically Tough Pluronic F127/Laponite Nanocomposite Hydrogels from Covalently and Physically Cross-Linked Networks
C. Wu (2011)
10.1016/J.ACTBIO.2006.08.009
Surface elastic properties of Ti alloys modified for medical implants: a force spectroscopy study.
C. Munuera (2007)
10.3762/bjnano.3.87
Growth behaviour and mechanical properties of PLL/HA multilayer films studied by AFM
Cagri Üzüm (2012)
Understanding the surface chemical and mechanical properties of hydrogel materials for contact lens applications
Yuchen Huo (2013)
10.1007/S10853-007-1806-4
Novel critical point drying (CPD) based preparation and transmission electron microscopy (TEM) imaging of protein specific molecularly imprinted polymers (HydroMIPs)
D. M. Hawkins (2007)
10.1002/mabi.201900360
Micromechanical Properties of Microstructured Elastomeric Hydrogels.
H. K. Lau (2020)
10.1201/B14900-11
Surface-Attached Polymeric Hydrogel Films
Ulrich Jonas (2013)
10.1016/j.biomaterials.2011.09.074
Hydrogel swelling as a trigger to release biodegradable polymer microneedles in skin.
M. Kim (2012)
10.1021/acs.langmuir.8b00183
Switchable Hydrogel-Gated Organic Field-Effect Transistors.
L. Fillaud (2018)
10.1002/9783527610419.NTLS0181
Stimuli-Responsive Polymer Nanocoatings
A. L. Cordeiro (2011)
10.1021/MA500972Y
Robust and Degradable Hydrogels from Poly(ethylene glycol) and Semi-Interpenetrating Collagen
Charles W. Peak (2014)
10.1007/S10856-007-3325-X
Preparation and mechanical characterization of a PNIPA hydrogel composite
Kaifeng Liu (2008)
10.1016/B978-0-85709-713-2.00006-7
Preparation and analysis of switchable copolymers for biomedical application
Moritz Nitschke (2015)
10.1002/9781119188896.CH4
4. Analytical Methods
Brigitte Voit (2016)
10.3390/membranes2010040
Thin Hydrogel Films for Optical Biosensor Applications
A. Mateescu (2012)
10.1016/J.BIOMATERIALS.2007.09.020
The structure and functionality of contractile forisome protein aggregates.
M. Jaeger (2008)
10.3390/jfb4040178
Tissue Engineering of the Corneal Endothelium: A Review of Carrier Materials
J. Teichmann (2013)
10.3389/fmech.2020.00002
Light-Driven Hydrogel Microactuators for On-Chip Cell Manipulations
Y. Koike (2020)
10.1021/acs.langmuir.6b02764
Separation of Storage and Loss Modulus of Polyelectrolyte Multilayers on a Nanoscale: A Dynamic AFM Study.
Johannes Hellwig (2016)
10.1002/mabi.201200234
Robust and semi-interpenetrating hydrogels from poly(ethylene glycol) and collagen for elastomeric tissue scaffolds.
Burke K. Chan (2012)
10.1039/c6nr09396e
Transfer printing gold nanoparticle arrays by tuning the surface hydrophilicity of thermo-responsive poly N-isopropylacrylamide (pNIPAAm).
S. Khabbaz Abkenar (2017)
10.1002/MACP.201100636
Investigation of Thermoresponsive Nano-Confined Polymer Brushes by AFM-Based Force Spectroscopy
Sadia Radji (2012)
Mechanical Characterization and Simulation of Biphasic Viscoelastic Gels
Kaifeng Liu (2009)
10.1039/c8cp02621a
Effect of environmental parameters on the nano mechanical properties of hyaluronic acid/poly(l-lysine) multilayers.
Johannes Hellwig (2018)
10.1016/B978-0-444-53349-4.00214-4
Stimuli-Responsive Polymer Systems
D. Kuckling (2012)
10.1016/S0032-3861(03)00413-0
Photo cross-linkable poly(N-isopropylacrylamide) copolymers III: micro-fabricated temperature responsive hydrogels
D. Kuckling (2003)
10.1016/S0006-3495(04)74375-1
Dynamic elastic modulus of porcine articular cartilage determined at two different levels of tissue organization by indentation-type atomic force microscopy.
M. Stolz (2004)
10.1016/j.cis.2016.11.003
Surface-bound microgels - From physicochemical properties to biomedical applications.
L. Nyström (2016)
10.1002/smll.201200417
Control of swelling of responsive nanogels by nanoconfinement.
S. Cuenot (2012)
10.1039/c6sm00782a
In situ characterization of structural dynamics in swelling hydrogels.
J. R. Guzman-Sepulveda (2016)
See more
Semantic Scholar Logo Some data provided by SemanticScholar