Please use this identifier to cite or link to this item:
Full metadata record
DC FieldValueLanguage
dc.contributor.authorGupta, Nupuren_US
dc.contributor.authorLiang, Yen Nanen_US
dc.contributor.authorChew, Jia Weien_US
dc.contributor.authorHu, Xiaoen_US
dc.identifier.citationGupta, N., Liang, Y. N., Chew, J. W. & Hu, X. (2021). Highly robust interfacially polymerized PA layer on thermally responsive semi-IPN hydrogel: toward on-demand tuning of porosity and surface charge. ACS Applied Materials and Interfaces, 13(50), 60590-60601.
dc.description.abstractHydrogel composites with skin layer that allows fast and selective rejection of molecules possess high potential for numerous applications, including sample preconcentration for point-of-use detection and analysis. The stimuli-responsive hydrogels are particularly promising due to facile regenerability. However, poor adhesion of the skin layer due to swelling-degree difference during continuous swelling/deswelling of the hydrogel hinders its further development. In this work, a polyamide skin layer with strong adhesion was fabricated via gel-liquid interfacial polymerization (GLIP) of branched polyethyleneimine (PEI) with trimesoyl chloride (TMC) on a cross-linked N-isopropyl acrylamide hydrogel network containing dispersed poly sodium acrylate (PSA), while the traditional m-phenylenediamine (MPD)-TMC polyamide layer readily delaminates. We investigated the mechanistic design principle, which not only resulted in strong anchoring of the polyamide layer to the hydrogel surface but also enabled manipulation of the surface morphology, porosity, and surface charge by tailoring interfacial reaction conditions. The polyamide/hydrogel composite was able to withstand 100 cycles of swelling/deswelling without any delamination or a significant decrease in its rejection performance of the model dye, i.e., methylene blue. Regeneration can be done by deswelling the swollen beads at 60 °C, which also releases any loosely bound molecules together with absorbed water. This work provides insights into the development of a physically and chemically robust skin layer on various types of hydrogels for applications such as preconcentration, antifouling-coating, selective compound extraction, etc.en_US
dc.description.sponsorshipNanyang Technological Universityen_US
dc.relation.ispartofACS Applied Materials and Interfacesen_US
dc.rights© 2021 American Chemical Society. All rights reserved.en_US
dc.titleHighly robust interfacially polymerized PA layer on thermally responsive semi-IPN hydrogel: toward on-demand tuning of porosity and surface chargeen_US
dc.typeJournal Articleen
dc.contributor.schoolSchool of Materials Science and Engineeringen_US
dc.contributor.schoolInterdisciplinary Graduate School (IGS)en_US
dc.contributor.schoolSchool of Chemical and Biomedical Engineeringen_US
dc.contributor.researchEnvironmental Chemistry and Materials Centreen_US
dc.contributor.researchNanyang Environment and Water Research Instituteen_US
dc.subject.keywordsN-Isopropyl Acrylamideen_US
dc.subject.keywordsPoly Sodium Acrylateen_US
dc.description.acknowledgementThe authors would like to thank Nanyang Technological University, Singapore, for the research scholarship via the Interdisciplinary Graduate Programme.en_US
item.fulltextNo Fulltext-
Appears in Collections:IGS Journal Articles
MSE Journal Articles
NEWRI Journal Articles
SCBE Journal Articles

Citations 50

Updated on Nov 27, 2023

Page view(s)

Updated on Nov 29, 2023

Google ScholarTM




Items in DR-NTU are protected by copyright, with all rights reserved, unless otherwise indicated.