Surfactant softening of plant leaf cuticle model wax : a Differential Scanning Calorimetry (DSC) and Quartz Crystal Microbalance with Dissipation (QCM-D) study

DSpace Repository

Surfactant softening of plant leaf cuticle model wax : a Differential Scanning Calorimetry (DSC) and Quartz Crystal Microbalance with Dissipation (QCM-D) study

Show full item record

Files for download

Find Full text There are no files associated with this item.

Facebook

Simple item record

Publication Article, peer reviewed scientific
Title Surfactant softening of plant leaf cuticle model wax : a Differential Scanning Calorimetry (DSC) and Quartz Crystal Microbalance with Dissipation (QCM-D) study
Author(s) Fagerström, Anton ; Kocherbitov, Vitaly ; Westbye, Peter ; Bergström, Karin ; Arnebrant, Thomas ; Engblom, Johan
Date 2014
English abstract
The aim was to quantify the softening effect that two surfactants (C10EO7 and C8G1.6) have on a plant leaf cuticle model wax. Effects on the thermotropic phase behavior and fluidity of the wax (C22H45OH/C32H66/H2O) were determined. The model wax is crystalline at ambient conditions, yet it is clearly softened by the surfactants. Both surfactants decreased the transition temperatures in the wax and the G″/G' ratio of the wax film increased in irreversible steps following surfactant exposure. C10EO7 has a stronger fluidizing effect than C8G1.6 due to stronger interaction with the hydrophobic waxes. Intracuticular waxes (IW) comprise both crystalline and amorphous domains and it has previously been proposed that the fluidizing effects of surfactants are due to interactions with the amorphous parts. New data suggests that this may be a simplification. Surfactants may also absorb in crevices between crystalline domains. This causes an irreversible effect and a softer cuticle wax.
DOI http://dx.doi.org/10.1016/j.jcis.2014.03.064 (link to publisher's fulltext)
Publisher Elsevier
Host/Issue Journal of Colloid and Interface Science;
Volume 426
ISSN 0021-9797
Pages 22-30
Language eng (iso)
Subject(s) Crystalline domains
Differential Scanning Calorimetry (DSC
Fluidizing effect
Plant leaf cuticle
Quartz Crystal Microbalance with Dissipation (QCM-D)
Surfactant softening
Wax film
Sciences
Research Subject Categories::NATURAL SCIENCES
Handle http://hdl.handle.net/2043/18357 (link to this page)

This item appears in the following Collection(s)

Show full item record

Search


Browse

My Account

Statistics