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Resistant starch/pectin free-standing films reinforced with nanocellulose intended for colonic methotrexate release
(2017-02-10)
Although resistant starch/pectin (RS/P) films have previously displayed suitable properties for colon-specific drug delivery, nanocomposite films were developed aiming to enhance physicochemical, thermal, mechanical and ...
Homeotropic surface anchoring and the layer-thinning transition in free-standing films
(AMER PHYSICAL SOC, 2008)
In this work, we investigate the interplay between surface anchoring and finite-size effects on the smectic-isotropic transition in free-standing smectic films. Using an extended McMillan model, we study how a homeotropic ...
Martensitic transformation in freestanding and supported Cu–Al–Ni thin films obtained at low deposition temperatures
(Elsevier Science, 2016-12-01)
In order to use the shape memory alloy Cu-Al-Ni in micro-actuators, freestanding thin films with martensitic transformation are required. Here we show that freestanding Cu-Al-Ni thin films with L21 structure, martensitic ...
PVDF-PAni blend: a free-standing film with variable electrical resistance
(Springer, 2017-05-01)
Films made of a blend of polyaniline (PAni) and a nonpolar polyvinylidene fluoride (PVDF) polymer matrix were obtained by the mechanical mixing of both, with subsequent melting and quenching. Using the current versus voltage ...
Optical, vibrational and fluorescence recombination pathway properties of nano SiO2-PVA composite films
(Elsevier, 2019)
We report optical and spectroscopic investigations on polyvinyl alcohol (PVA)/silica composite free standing films. Amorphous silica nanoparticles are synthesized from rice husk ash using pyrolysis technique. PVA/silica ...
Hydrogen effects on the mechanical properties of nanocrystalline free-standing Palladium thin films
(Elsevier Ltd., 2020-05)
Pd membranes are used both in hydrogen detection and hydrogen separation devices. Their properties can be improved at the nanometer scale. We simulate atomistically the tensile properties of Pd mono and polycrystalline ...
Strain-gradient-induced switching of nanoscale domains in free-standing ultrathin films
(American Physical Society, 2014-04)
We report first-principle atomistic simulations of the effect of local strain gradients on the nanoscale domain morphology of free-standing PbTiO3 ultrathin films. First, the ferroelectric properties of free films at the ...
Energetics of the phase transition in free-standing versus supported lipid membranes
(American Chemical Society, 2015-07)
We compared the thermodynamic behavior of supported and free-standing films of phospholipids with different chain length and showed that the change in free energy for the phase transition to a denser state was greater in ...
Evidence of weak ferromagnetism in doped plasticized polyaniline (PANI-DDoESSA)0.5 from electron spin resonance measurements
(2013-03-20)
X-band electron spin resonance (ESR) measurements have been performed on a conducting free-standing film of polyaniline plasticized and protonated with di-n-dodecyl ester of sulfosuccinic acid (DDoESSA). The magnetic field ...
Evidence of weak ferromagnetism in doped plasticized polyaniline (PANI-DDoESSA)0.5 from electron spin resonance measurements
(2013-03-20)
X-band electron spin resonance (ESR) measurements have been performed on a conducting free-standing film of polyaniline plasticized and protonated with di-n-dodecyl ester of sulfosuccinic acid (DDoESSA). The magnetic field ...