In situ polymerized hyperbranched polymer reinforced poly(acrylic acid) hydrogels

Dehbari, N; Tavakoli, J; Singh Khatrao, S; Tang, Y

In situ polymerized hyperbranched polymer reinforced poly(acrylic acid) hydrogels

Dehbari, N Tavakoli, J

Singh Khatrao, S Tang, Y

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Publisher:: Royal Society of Chemistry
Publication Type:: Journal Article
Citation:: Materials Chemistry Frontiers, 2017, 1, (10), pp. 1995-2004
Issue Date:: 2017-10-01

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Field	Value	Language
dc.contributor.author	Dehbari, N
dc.contributor.author	Tavakoli, J https://orcid.org/0000-0002-0696-6530
dc.contributor.author	Singh Khatrao, S
dc.contributor.author	Tang, Y
dc.date.accessioned	2022-07-14T04:55:13Z
dc.date.available	2022-07-14T04:55:13Z
dc.date.issued	2017-10-01
dc.identifier.citation	Materials Chemistry Frontiers, 2017, 1, (10), pp. 1995-2004
dc.identifier.issn	2052-1537
dc.identifier.issn	2052-1537
dc.identifier.uri	http://hdl.handle.net/10453/158907
dc.description.abstract	Hydrogels have been extensively investigated for use in various applications. Poly acrylic acid (PAA) is a common example, which has been widely used due to its super hydrophilicity properties, biocompatibility and biodegradability characteristics. However its poor mechanical properties, which have been addressed in many research studies, are known as a drawback that limits its applications. So, enhancing PAA mechanical properties using a hyperbranched polymer (HB) is the key question to be addressed in this research. Investigations of the mechanical properties of the PAA-HB hydrogel revealed 130% improvement in the ultimate tensile strength, indicating a two times enhancement compared to that of PAA. Statistical analysis showed that the overall effect of introducing notches (with different depths) on the selected mechanical properties of both PAA and PAA-HB was significant. Mechanical characterization of PAA-HB networks showed that significant improvement in the mechanical properties was achieved as the capability of water uptake increased by 20%. Characterization of the physical properties confirmed that participation of HB may form a PAA based hybrid material with good swelling properties. Those findings are attributed to the supramolecular structure of the HB, which can introduce physical entanglement between the PAA network structure and increase the crystallinity of the final hydrogel as compared to those from the PAA hydrogel.
dc.language	English
dc.publisher	Royal Society of Chemistry
dc.relation.ispartof	Materials Chemistry Frontiers
dc.relation.isbasedon	10.1039/c7qm00028f
dc.rights	info:eu-repo/semantics/openAccess
dc.title	In situ polymerized hyperbranched polymer reinforced poly(acrylic acid) hydrogels
dc.type	Journal Article
utslib.citation.volume	1
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Strength - CHT - Health Technologies
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Biomedical Engineering
pubs.organisational-group	/University of Technology Sydney/Centre for Health Technologies (CHT)
utslib.copyright.status	open_access	*
pubs.consider-herdc	false
dc.date.updated	2022-07-14T04:55:10Z
pubs.issue	10
pubs.publication-status	Published
pubs.volume	1
utslib.citation.issue	10

Abstract:

Hydrogels have been extensively investigated for use in various applications. Poly acrylic acid (PAA) is a common example, which has been widely used due to its super hydrophilicity properties, biocompatibility and biodegradability characteristics. However its poor mechanical properties, which have been addressed in many research studies, are known as a drawback that limits its applications. So, enhancing PAA mechanical properties using a hyperbranched polymer (HB) is the key question to be addressed in this research. Investigations of the mechanical properties of the PAA-HB hydrogel revealed 130% improvement in the ultimate tensile strength, indicating a two times enhancement compared to that of PAA. Statistical analysis showed that the overall effect of introducing notches (with different depths) on the selected mechanical properties of both PAA and PAA-HB was significant. Mechanical characterization of PAA-HB networks showed that significant improvement in the mechanical properties was achieved as the capability of water uptake increased by 20%. Characterization of the physical properties confirmed that participation of HB may form a PAA based hybrid material with good swelling properties. Those findings are attributed to the supramolecular structure of the HB, which can introduce physical entanglement between the PAA network structure and increase the crystallinity of the final hydrogel as compared to those from the PAA hydrogel.

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http://hdl.handle.net/10453/158907