2016
DOI: 10.1016/j.polymer.2016.08.040
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Observation of constraint surface dynamics of polystyrene thin films by functionalization of a silsesquioxane cage

Abstract: The surface dynamics of polyhedral oligomeric silsesquioxane (POSS)-functionalized polystyrene (PS-POSS) thin films above the glass transition temperature were studied by grazing-incidence X-ray photon correlation spectroscopy in order to elucidate the effects of POSS at the end of the polystyrene chains. Much slower fluctuations were observed in the surface of PS-POSS thin films than in the polystyrene thin films, despite the negligible difference in their bulk viscosity. Quantitative analysis based on fluctu… Show more

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Cited by 8 publications
(3 citation statements)
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References 33 publications
(35 reference statements)
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“…Since the capillary waves in thin films with inhomogeneous viscosity behave differently from eqn (3), it is informative to collect and discuss the data at various thickness. 31,43 It should be also significant to distinguish between surface and internal dynamics by using a thin film with dispersed probe particles and tuning the incident angle. 44,45 Similar measurements can be performed under other conditions, such as ultraviolet light UV curing, and a deeper understanding of the curing mechanisms in various thin films is expected in the future.…”
Section: Discussionmentioning
confidence: 99%
See 1 more Smart Citation
“…Since the capillary waves in thin films with inhomogeneous viscosity behave differently from eqn (3), it is informative to collect and discuss the data at various thickness. 31,43 It should be also significant to distinguish between surface and internal dynamics by using a thin film with dispersed probe particles and tuning the incident angle. 44,45 Similar measurements can be performed under other conditions, such as ultraviolet light UV curing, and a deeper understanding of the curing mechanisms in various thin films is expected in the future.…”
Section: Discussionmentioning
confidence: 99%
“…The dynamical behaviour of surface fluctuations is described in relation with the surface tension, viscosity, viscoelasticity, and thickness. The dynamics of capillary waves has been experimentally studied using coherent surface scattering techniques, namely, light scattering spectroscopy (LSS) [26][27][28][29] and grazing incidence X-ray photon correlation spectroscopy (GI-XPCS), 30,31 whereby the capillary wave spectra with scattering wave vector dependence and dynamic properties are obtained. In this study, the dynamics of capillary waves during the thermal curing of spincoated thin films of diamine-based epoxy resin were investigated.…”
Section: Introductionmentioning
confidence: 99%
“…or any combination thereof). Both compounds have been used in the synthesis of thin films in combination with other materials like polymers by chemically binding to them or by physically blending them in, as well as on their own. , ,, The versatile nature of these compounds has led to the development of several hydrophobic surfaces. , Applications for these thin films include lowering the dielectric constant of the surface, improving the antibacterial performance, improving the fire protection behavior, and even producing membranes suitable for the desalination of water with reverse osmosis. ,,,,,, ,,,, …”
Section: Introductionmentioning
confidence: 99%