Toroidal hollow-core microcavities produced by self-rolling of strained polymer bilayer films [PDF]
Journal of Micromechanics and Microengineering, 2008, 18 (3),
pp.035041, 2023 Hollow-core toroidal micro-cavities are obtained by self-rolling of double-layer (polyvinyl pyridine/polystyrole) polymer films. Rolling of the bilayer is due to preferential swelling of the polyvinyl pyridine in water solution of dodecyl benzene sulfonic acid.
arxiv +1 more source
Polyvinyl Alcohol-Few Layer Graphene Composite Films Prepared from Aqueous Colloids. Investigations of Mechanical, Conductive and Gas Barrier Properties [PDF]
Nanomaterials 2020, 10, 858, 2020 Quasi all water soluble composites use graphene oxide (GO) or reduced graphene oxide (rGO) as graphene based additives despite the long and harsh conditions required for their preparation. Herein, polyvinyl alcohol (PVA) films containing few layer graphene (FLG) are prepared by the co-mixing of aqueous colloids and casting, where the FLG colloid is ...
arxiv +1 more source
Evidence of local softening in glassy poly(vinyl alcohol)/poly(vinyl pyrrolidone) (1/1, w/w) nano-graphene platelets composites [PDF]
Materials Chemistry and Physics (2018), 2018 Complex permittivity studies on glassy poly(vinyl alcohol)/poly(vinyl pyrrolidone) (1/1) at proper pressure-temperature condition, provide the activation volume and energy values for both dc conductivity and \b{eta}-relaxation. The temperature dependence of the activation volume, which signatures volume-fluctuations accompanying a dynamic process ...
arxiv +1 more source
Complete depigmentation of a small aperture corneal inlay implanted for compensation of presbyopia [PDF]
, 2017 We describe a case of late-onset remarkable depigmentation of a small aperture corneal inlay implanted for presbyopia compensation. The patient was a participant in a clinical trial designed to evaluate the safety and efficacy of the AcuFocus (TM) ACU ...
Beer, Sandra Maria Canelas [UNIFESP] +5 more
core +3 more sources
Journal of Polymer and Biopolymer Physics Chemistry, 2021 Polyvinyl alkyl esters (PVAe) are a family of macromolecules in which the ester side chains (pendant groups) increase in molar mass and hydrophobicity and decrease in structural polarity as the number of carbons in the pendant group increases. These PVAe are commonly used in adhesives, industrial coatings, plasticizers, textile finishes, chewing gum ...
Ronald P. D’Amelia +1 more
openaire +2 more sources
Biomaterials for bone regeneration : an orthopedic and dentistry overview [PDF]
, 2021 Because bone-associated diseases are increasing, a variety of tissue engineering approaches with bone regeneration purposes have been proposed over the last years.
Baldin, Estela Knopp Kerstner +6 more
core
Food web transfer of plastics to an apex riverine predator [PDF]
, 2020 As a rapidly accelerating expression of global change, plastics now occur extensively in freshwater ecosystems, yet there is barely any evidence of their transfer through food webs. Following previous observations that plastics occur widely in their prey,
D'Souza, Joseph M. +3 more
core +2 more sources
Polyvinyl chloride pneumoconiosis. [PDF]
Thorax, 1978 A 53-year-old man, who had been exposed for 23 years to polyvinyl chloride (PVC) in the bagging area of a vinyl chloride polymerisation plant, presented with a diffuse micronodular infiltrate on his chest radiograph. Light microscopy of lung obtained by drill biopsy showed a diffuse infiltration with histiocytes and multinucleated giant cells, with ...
P Pommier de Santi +4 more
openaire +2 more sources
Mass Transfer and Reaction Characteristics of Homogeneously Catalyzed Aerobic Oxidation of 5-Hydroxymethylfurfural in Slug Flow Microreactors [PDF]
, 2021 Oxidation of 5-hydroxymethylfurfural (HMF) using air or pure oxygen was performed in polytetrafluoroethylene capillary microreactors under gas–liquid slug flow, with Co/Mn/Br as the homogeneous catalyst in the acetic acid solvent.
Disselhorst, Bas +5 more
core +1 more source
Crystal Templating with Mutually Miscible Solvents: A Simple Path to Hierarchical Porosity [PDF]
Journal of the American Ceramic Society, 97(7), 2020-2023, 2015 Ice templating, a route where ice crystals are used to template macroporosity, has been used to process a variety of materials with one level of macropores. We demonstrate here a variant of ice templating based on the solidification of mutually miscible solvents.
arxiv +1 more source