Quantitative and Mechanistic Analysis of Impact of Novel Cassava-Assisted Improved Processing on Fluid Transport Phenomenon in Humidity-Temperature-Stressed Bio-Derived Films
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Date
2016
Journal Title
Journal ISSN
Volume Title
Publisher
European Polymer Journal
Abstract
Bio-derived films’ realistic performance integrity is ascertained by their resilience in highly stressful storage conditions, a function of its ability to respond timely and manages fluid
barrier appropriately. Bio-derived films’ moisture and temperature sensitivity often posed
mass transport challenges, thus decreasing their lifespan. Quantifying bio-derived film mass
transport behaviour has been limited to mass transfer representations, which can be imperfect
to understand fully mass transport phenomenon. This study reported quantitative and
mechanistic analysis of fluid-phase mass transport phenomenon in Simultaneous Release
Recovery Cyanogenesis-produced intact bitter cassava (IBC) bio-derived films under
stressful conditions. Films were tested for solvent solubility, swelling ratio, sorption and
permeability to water vapour and oxygen at 10-40°C and 10-95% RH. Film’s structural
alterations were characterised by their thermal and chemical properties. Modified-BET,
Peleg, Oswin models best described sorption data. Temperature-dependence of film water
vapour permeability was simulated best by Arrhenius model, while oxygen permeability was
influenced highly by crystallinity and RH. Non-organic and organic film-solvent diffusion
followed case II and Fickian diffusional patterns respectively. Solvents induced structural
changes in IBC films with concentration-dependent diffusion. Cassava bio-derived films’
integrity will depend on the host environment, thus maximum care should be ensured to
minimise environment impact during applications. Nonetheless, IBC films hold potential as
biomaterials for broad range product use.
Description
This is a research article on Bio-derived films’ realistic performance integrity is ascertained by their resilience in highly stressful storage conditions, a function of their ability to respond timely and manages fluid barrier appropriately.
Keywords
Cassava film, Temperature-RH dependence, Mechanistic
Citation
Tumwesigye, K.S., Oliveira, J.C., Sousa-Gallagher, M.J., Quantitative and mechanistic analysis of impact of novel cassava-assisted improved processing on fluid transport phenomenon in humidity temperature-stressed bio-derived films, European Polymer Journal (2017), DOI: http://dx.doi.org/10.1016/j.eurpolymj.2017.04.027