Characterization of stress softening and self-healing in a double network hydrogel

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dc.contributor.authorKülcü, İsmail Doğan
dc.date.accessioned2021-01-08T21:51:22Z
dc.date.available2021-01-08T21:51:22Z
dc.date.issued2019
dc.departmentTAÜ, Mühendislik Fakültesi, Makine Mühendisliği Bölümüen_US
dc.descriptionKulcu, Ismail Dogan/0000-0001-5431-7802en_US
dc.descriptionWOS:000460704700265en_US
dc.description.abstractIn this paper, a micro-mechanically based constitutive model is presented to describe stress softening and self-healing in alginate-polyacrylamide (PAAm) double network (DN) hydrogels. The stress softening phenomenon in alginate-PAAm DN hydrogels under cyclical deformation is assumed to be the result of the rupture of chain linkages. Therefore, the network evolution method [Dargazany and Itskov, International Journal of Solids and Structures, 2009, 46, 2967] is used to characterize stress softening. The polymer matrix is initially decomposed into reversible and irreversible polymer networks. To model stress softening, the entropic energy of a polymer chain and the chain distribution are taken into account for each network. Unlike conventional DN hydrogels, after deformation alginate-PAAm hydrogels show self-healing. The rate of self-healing is associated with both intermolecular forces and the duration of storage of the samples in a thermal chamber. Broken chain linkages are assumed to rebond due to intermolecular forces and heating. Chemical reaction kinetics and heat transfer equations are utilized to calculate the quantity of the reversible cross-linking rebonding. This model contains few material parameters and demonstrates good agreement with experimental data in stress softening and self-healing.
dc.identifier.doi10.1016/j.rinp.2019.01.078
dc.identifier.endpage1833en_US
dc.identifier.issn2211-3797
dc.identifier.scopus2-s2.0-85061370932
dc.identifier.scopusqualityQ2
dc.identifier.startpage1826en_US
dc.identifier.urihttp://doi.org/10.1016/j.rinp.2019.01.078
dc.identifier.urihttps://hdl.handle.net/20.500.12846/197
dc.identifier.volume12en_US
dc.identifier.wosWOS:000460704700265
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.institutionauthorKülcü, İsmail Doğan
dc.language.isoen
dc.publisherElsevier
dc.relation.ispartofResults In Physics
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/openAccess
dc.subjectConstitutive Modelingen_US
dc.subjectStress Softeningen_US
dc.subjectSelf Healingen_US
dc.subjectRubber-Like Materialsen_US
dc.subjectTough Hydrogelsen_US
dc.titleCharacterization of stress softening and self-healing in a double network hydrogel
dc.typeArticle

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