Nano-Micro Letters | |
High Oxygen Nanocomposite Barrier Films Based on Xylan and Nanocrystalline Cellulose | |
Amit Saxena11  Jeffrey Kenvin3 and Arthur J. Ragauskas1  Thomas J. Elder21  | |
关键词: Nanocomposites; Xylan; Nanocrystalline cellulose; Oxygen barrier; | |
DOI : 10.3786/nml.v2i4.p235-241 | |
来源: Open Access House of Science and Technology | |
【 摘 要 】
Thegoalofthisworkistoproducenanocompositefilmwithlowoxygenpermeabilitybycastinganaqueoussolutioncontainingxylan,sorbitolandnanocrystallinecellulose.Themorphologyoftheresultingnanocompositefilmswasexaminedbyscanningelectronmicroscopyandatomicforcemicroscopywhichshowedthatcontrolfilmscontainingxylanandsorbitolhadamoreopenstructureascomparedtoxylan-sorbitolfilmscontainingsulfonatednanocrystallinecellulose.Theaverageporediameter,bulkdensity,porosityandtortuosityfactormeasurementsofcontrolxylanfilmsandnanocompositexylanfilmswereexaminedbymercuryintrusionporosimetrytechniques.Xylanfilmsreinforcedwithnanocrystallinecelluloseweredenserandexhibitedhighertortuosityfactorthanthecontrolxylanfilms.Controlxylanfilmshadaverageporediameter,bulkdensity,porosityandtortuosityfactorof0.1730μm,0.6165g/ml,53.0161%and1.258,respectivelyascomparedtoxylanfilmsreinforcedwith50%nanocrystallinecellulosewithaverageporediameterof0.0581μm,bulkdensityof1.1513g/ml,porosityof22.8906%andtortuosityfactorof2.005.Oxygentransmissionratetestsdemonstratedthatfilmspreparedwithxylan,sorbitoland5%,10%,25%and50%sulfonatednanocrystallinecelluloseexhibitedasignificantlyreducedoxygenpermeabilityof1.1387,1.0933,0.8986and0.1799cm3×μm/m2×d×kParespectivelywithrespecttofilmspreparedsolelyfromxylanandsorbitolwithaoxygenpermeabilityof189.1665cm3×μm/m2×d×kPa.Thesepropertiessuggestedthesenanocompositefilmshavepromisingbarrierproperties.
【 授权许可】
Unknown
【 预 览 】
Files | Size | Format | View |
---|---|---|---|
RO201912090819708ZK.pdf | 532KB | download |