Modeling elastic, viscous and creep characteristics of cellulose Electro-Active Paper

Kim, Jaehwan; Ampofo, Joshua; Craft, William J.; Kim, Heung Soo

doi:10.1016/j.mechmat.2008.07.001

Cited by 20 publications

(11 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A spring/dashpot combination model is often used to depict creep and stress-relaxation behaviour. Kim et al (2008) used a model formed by parallel spring-dashpot combinations and a dashpot in series to describe cyclic creep behaviour of cellulose electro-active paper at various temperatures. Frensemeier et al (2010) used the Burgers viscoelastic model that accounts for water release to decreibe a visocelastic response of a BC hydrogel.…”

Section: Introductionmentioning

confidence: 99%

Time-dependent rheological behaviour of bacterial cellulose hydrogel

Gao

Shi

Kuśmierczyk

et al. 2016

Materials Science and Engineering: C

View full text Add to dashboard Cite

Present work focuses on time-dependent rheological behaviour of bacterial cellulose (BC) hydrogel. Due to its ideal biocompatibility, BC hydrogel could be employed in biomedical applications. Considering the complexity of loading conditions in human body environment, time-dependent behaviour under relevant conditions should be understood. BC specimens are produced by Gluconacetobacter xylinus ATCC 53582 at static-culture conditions. Time-dependent behaviour of specimens at several stress levels is experimentally determined by uniaxial tensile creep tests. We use fraction-exponential operators to model the rheological behaviour. Such a representation allows combination of good accuracy in analytical description of viscoelastic behaviour of real materials and simplicity in solving boundary value problems. The obtained material parameters allow us to identify time-dependent behaviour of BC hydrogel at high stress level with sufficient accuracy.

show abstract

Section: Introductionmentioning

confidence: 99%

Time-dependent rheological behaviour of bacterial cellulose hydrogel

Gao

Shi

Kuśmierczyk

et al. 2016

Materials Science and Engineering: C

View full text Add to dashboard Cite

show abstract

“…A classic generalized Maxwell viscoelastic model with a spring/dashpot combination is widely used for this. A modified model combining parallel sets spring/dashpot and a dashpot in series was developed to describe cyclic creep behaviour of a cellulose-based material [19].…”

Section: Introductionmentioning

confidence: 99%

Through-thickness stress relaxation in bacterial cellulose hydrogel

Gao

Kuśmierczyk

Shi

et al. 2016

Journal of the Mechanical Behavior of Biomedical Materials

View full text Add to dashboard Cite

Biological hydrogels, e.g. bacterial cellulose (BC) hydrogel, attracted increasing interest in recent decades since they show a good potential for biomedical engineering as replacements of real tissues thanks mainly to their good biocompatibility and fibrous structure. To select potential candidates for such applications, a comprehensive understanding of their performance under application-relevant conditions is needed. Most hydrogels demonstrate time-dependent behaviour due to the contribution of their liquid phase and reorientation of fibres in a process of their deformation. To quantify such time-dependent behaviour is crucial due to their exposure to complicated loading conditions in body environment. Some hydrogel-based biomaterials with a multi-layered fibrous structure demonstrate a promise as artificial skin and blood vessels. The results show a good potential to use a fraction-exponential model to describe such behaviour of multi-layered hydrogels, especially at stages of stress decay at low forces and of stress equilibrium at high forces.

show abstract

“…EAPap creeps at elevated temperature, the elastic behavior varies inversely with temperature and with the bias angle tested. However, the overall viscous behavior of the EAPap tested was relatively complex (Kim et al, 2008c;Lee et al, 2009a). Hydrothermal behavior of EAPap showed that the creep resistance varied by changing the orientation of EAPap samples ).…”

Section: Electromechanical Behavior and Propertiesmentioning

confidence: 99%