Essay topic:Through-thickness stressrelaxationinbacterial cellulose hydrogel
Ambit:Functional polymer
Author:Xing Gaoa, PiotrKus′mierczykb, ZhijunShic, ChangqingLiua, GuangYangc, Igor Sevostianovd, VadimV.Silb
Key words:Bacterial cellulosehydrogel Rheology, Fraction-exponentialoperators, Stress-relaxation test, Time-dependent behaviour
Source: journal
Specific source :ScienceDirect
Published:2016
Abstract:
Biologicalhydrogels,e.g.bacterialcellulose(BC)hydrogel,attractedincreasinginterestin recent decadessincetheyshowagoodpotentialforbiomedicalengineeringasreplace-
ments ofrealtissuesthanksmainlytotheirgoodbiocompatibilityand fibrous structure.To
select potentialcandidatesforsuchapplications,acomprehensiveunderstandingoftheir
performance underapplication-relevantconditionsisneeded.Mosthydrogelsdemon-
strate time-dependentbehaviourduetothecontributionoftheirliquidphaseand
reorientation of fibres inaprocessoftheirdeformation.Toquantifysuchtime-
dependent behaviouriscrucialduetotheirexposuretocomplicatedloadingconditions
in bodyenvironment.Somehydrogel-basedbiomaterialswithamulti-layered fibrous
structure demonstrateapromiseasartificial skinandbloodvessels.Tocharacteriseand
model time-dependentbehaviourofthesemulti-layeredhydrogelsalongtheirthrough-
thickness directionistherebyofvitalimportance.Hence,aholisticstudycombining