02263nas a2200361 4500008004100000022001400041245010900055210006900164260000800233300001300241490000800254520117500262653002201437653001301459653001201472653001401484653001701498653001301515653002901528653001401557653001201571653002101583653002401604653001701628653001301645653001401658100001801672700001901690700002501709700001701734700002101751856012901772 2017 eng d a0032-386100a Design and development of trivalent aluminum ions induced self healing polyacrylic acid novel hydrogels0 aDesign and development of trivalent aluminum ions induced self h cSEP a 196-2050 v1263 a
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.
10aAluminum chloride10aBehavior10aComplex10aComposite10acrosslinking10aDelivery10aHigh-Mechanical Strength10ahydrogels10aNetwork10aPolyacrylic acid10aPolymeric Materials10aSelf-healing10aswelling10aTough; pH1 aAnjum, Sadiya1 aGurave, Pramod1 aBadiger, Manohar, V.1 aTiwari, Neha1 aGupta, Bhuvanesh uhttp://library.ncl.res.in/content/design-and-development-trivalent-aluminum-ions-induced-self-healing-polyacrylic-acid-novel