Design and development of trivalent aluminum ions induced self healing polyacrylic acid novel hydrogels

Title Design and development of trivalent aluminum ions induced self healing polyacrylic acid novel hydrogels
Publication TypeJournal Article
Year of Publication2017
AuthorsAnjum, S, Gurave, P, Badiger, MV, Tiwari, N, Gupta, B
JournalPOLYMER
Volume126
Start Page196-205
Pagination 196-205
Date PublishedSEP
Type of ArticleJournal Article
ISSN0032-3861
KeywordsAluminum chloride, Behavior, Complex, Composite, crosslinking, Delivery, High-Mechanical Strength, hydrogels, Network, Polyacrylic acid, Polymeric Materials, Self-healing, swelling, Tough; pH
Abstract

Development of ionically crosslinked superabsorbent polyacrylic acid (PAA) self-healing hydrogels using trivalent aluminum ions was investigated. The PAA hydrogels exhibited excellent self-healing behavior depending on the amount of the aluminum within the matrix. The migration of these ions within the polymer matrix was responsible for the physical crosslinking of the hydrogel and the origin of self healing ability. The PAA-Al hydrogels were insoluble in water and exhibited significantly high degree of swelling (similar to 4000%). Hydrogel also exhibited good mechanical properties with high level of elongation. Excellent self-healing efficiency was observed under dynamic as well as oscillatory Theological measurements. The presence of Al ions within PAA hydrogel facilitated the self-healing ability because of the ionic interaction in these gels which plays the key role of dynamic reversible sacrificial bonds which reforms upon reversal of the deformative force. (C) 2017 Elsevier Ltd. All rights reserved.

DOI10.1016/j.polymer.2017.08.045
Type of Journal (Indian or Foreign)

Foreign

Impact Factor (IF)

3.586

Divison category: 
Polymer Science & Engineering