Imperial College London
Alternate

ProfessorDarylWilliams

Faculty of Engineering, Department of Chemical Engineering

Professor of Particle Science
 
 
 
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Contact

 

+44 (0)20 7594 5611d.r.williams Website

 
 
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Location

 

439ACE ExtensionSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Ngeow:2020:10.1021/acsomega.9b03920,
author = {Ngeow, YW and Williams, DR and Chapman, A and Heng, JYY},
doi = {10.1021/acsomega.9b03920},
journal = {ACS Omega},
pages = {10266--10275},
title = {Surface energy mapping of modified silica using IGC technique at inite dilution},
url = {http://dx.doi.org/10.1021/acsomega.9b03920},
volume = {5},
year = {2020}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - The reinforcing silica filler, which can be more than 40% of an elastomer composite, plays a key role to achieve the desired mechanical properties in elastomer vulcanizates. However, the highly hydrophilic nature of silica surface causes silica particle aggregation. It remained a challenge for many tire manufacturers when using silica-filled elastomer compounds. Here, the silica surface energy changes when the surface is modified with coupling or noncoupling silanes; coupling silanes can covalently bond the silica to the elastomers. The surface energy of silica was determined using inverse gas chromatography (IGC) at finite dilution (FD-IGC) and found to be reduced by up to 50% when the silica surface was silanized. The spatial distribution of silica aggregates within the tire matrix is determined by transmission electron microscopy (TEM) and a direct correlation between aggregate size (silica microdispersion) and work of cohesion from IGC is reported, highlighting surface energy and work of cohesion being excellent indicators of the degree of dispersion of silica aggregates.
AU  - Ngeow,YW
AU  - Williams,DR
AU  - Chapman,A
AU  - Heng,JYY
DO  - 10.1021/acsomega.9b03920
EP  - 10275
PY  - 2020///
SN  - 2470-1343
SP  - 10266
TI  - Surface energy mapping of modified silica using IGC technique at inite dilution
T2  - ACS Omega
UR  - http://dx.doi.org/10.1021/acsomega.9b03920
UR  - http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000535224700006&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
UR  - https://pubs.acs.org/doi/10.1021/acsomega.9b03920
UR  - http://hdl.handle.net/10044/1/84645
VL  - 5
ER  -
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