ORCID Profile
0000-0003-1473-0947
Current Organisation
The University of Auckland
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Publisher: Elsevier BV
Date: 2016
Publisher: Elsevier BV
Date: 2023
DOI: 10.1016/J.JCIS.2022.10.029
Abstract: Hydrogels made with semi-interpenetrating networks of the oligomerized polyphenol tannic acid, and poly(acrylamide), exhibit high stiffness and toughness. However, the structure property relationships that give rise to enhanced mechanical properties is not well understood. Herein, we systematically investigate the hydrogels using small angle X-ray scattering and small and Ultra-small angle neutron scattering within a wide length scale range (1 nm to 20 µm), polarized optical microscopy, and rheology. Small angle X-ray and neutron scattering reveal the presence of micron sized hydrogen bonded clusters in the hydrogels. Breaking of hydrogen bonded clusters above a critical solution temperature was clearly observed in the small angle neutron scattering data. Polarized optical microscopy show enhanced anisotropy for the gels with oligomerized tannic acid incorporated - when compared to gels with monomeric tannic acid. Rheological studies at varying temperatures nicely corroborate the structural changes observed at high temperatures and reveal a self-healing behavior of the gels. The knowledge gained from this study will aid in rational design of hydrogels for biomedical applications.
Publisher: SPIE
Date: 09-03-2015
DOI: 10.1117/12.2078638
Publisher: American Chemical Society (ACS)
Date: 12-08-2021
Publisher: Elsevier BV
Date: 03-2012
Publisher: Royal Society of Chemistry (RSC)
Date: 2015
DOI: 10.1039/C5TB02125A
Abstract: Salt- and temperature-responsive P(PEGMMA)-based brushes were grafted from conducting polymer films to produce electroactive surfaces with tailored switching behaviour.
Publisher: American Chemical Society (ACS)
Date: 13-06-2013
DOI: 10.1021/MA400803J
Publisher: American Chemical Society (ACS)
Date: 14-12-2020
No related grants have been discovered for Jenny Malmstrom.