Imperial College London

DrJanetWong

Faculty of EngineeringDepartment of Mechanical Engineering

Senior Lecturer
 
 
 
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Contact

 

+44 (0)20 7594 8991j.wong

 
 
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Location

 

671City and Guilds BuildingSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Wong:2014:10.1016/j.polymer.2014.12.039,
author = {Wong, JSP and Hu, M and Shi, D and Li, RKY and Wong, JSS},
doi = {10.1016/j.polymer.2014.12.039},
journal = {Polymer},
pages = {67--75},
title = {In-situ Monitoring on Dynamics of Solute Transport in Polymer Films},
url = {http://dx.doi.org/10.1016/j.polymer.2014.12.039},
volume = {58},
year = {2014}
}

RIS format (EndNote, RefMan)

TY  - JOUR
AB - A new and non-invasive technique based on confocal laser scanning microscopy (CLSM) that allows the visualization of penetrant diffusion in-situ has been developed and was applied to quantify local solute dynamics in polymeric films. The effectiveness of the proposed technique was demonstrated using a model penetrant, rhodamine-6G (Rh-6G), and a system of polyvinyl alcohol (PVA) films with different degree of cross-linking, and different content of montmorillonite (MMT) clay. The penetrant's transport across PVA films were monitored by measuring the time evolutions of through thickness fluorescence intensity profiles. These profiles were then converted to concentration profiles, which allow local diffusion coefficients of the model solute (i.e. Rh-6G) to be determined. The developed methodology was applied to both single layer and bilayers films and local diffusion heterogeneity was detected. Hence the technique developed can be applied to multi-layer films, and can be beneficial to film developments for packaging and filtration technology.
AU - Wong,JSP
AU - Hu,M
AU - Shi,D
AU - Li,RKY
AU - Wong,JSS
DO - 10.1016/j.polymer.2014.12.039
EP - 75
PY - 2014///
SN - 0032-3861
SP - 67
TI - In-situ Monitoring on Dynamics of Solute Transport in Polymer Films
T2 - Polymer
UR - http://dx.doi.org/10.1016/j.polymer.2014.12.039
UR - http://hdl.handle.net/10044/1/25552
VL - 58
ER -