Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 19 of 19 for “"Gas barrier"”.
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Polyelectrolyte complexes as building blocks for gas barrier coatings and fire-safe lightweight materials
L'abstract è presente nell'allegato / the abstract is in the attachment
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Finishing Processes for Zein Biodegradable Films
… provided films with range of tensile properties, gas barrier properties, and thermal properties. The range could make zein-based films potentially useful in packaging applications for fresh produce of different respiration rates.
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Engineering approaches to study lung mechanobiology
… the regulation of the pulmonary blood-gas barrier, and endothelial barrier function in particular. The pulmonary blood-gas barrier consists of airway epithelial cells, which are exposed to the inhaled air, and vascular endothelial cells, which line the blood vessels. In Chapter 2 of …
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CONFINED LAYERED POLYMERIC SYSTEMS FOR PACKAGING ANDCAPACITOR APPLICATIONS
… including confined crystallization for high gas barrier applications and multilayer dielectric films for high energy density capacitors.CHAPTER 1: A review of recent progress of confined polymer crystallization using forced assembly nanolayer coextrusion is described. Confinement of …
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Improved Properties of Poly (Lactic Acid) with Incorporation of Carbon Hybrid Nanostructure
… it has low glass transition temperature and poor gas barrier properties to restrict the application on hot contents packaging and long-term food packaging. The objectives of this research are: (a) to reduce coagulation of graphene oxide/single-walled carbon nanotube (GOCNT) nanocomposite in …
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Green synthesis and characterization of gold nanoparticles from capparis sepiaria-tabernaemontana elegans cocktail and investigation of their biological effects in vitro.
… dressings that possess antimicrobial properties, gas barrier, and absorbency. these nms might fall into two categories: those with inherent wound-healing properties and those serving as delivery vehicles for therapeutic agents. gold nanoparticles (aunps) have more consideration due to their …
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Fundamental Studies of Various Poly(L-lactide)/clay Nanocomposite Systems by in-situ Polymerization
… commodity polymers, mechanical, thermal, and gas barrier properties must be improved. This can be achieved by dispersing inorganic fillers into the polymer matrix, thus forming an exfoliated polymer nanocomposite. In this study, in situ polymerizations ofpoly(L-lactide)-clay nanocomposites …
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Accessing Model, Functional Polyolefins and Polyolefin Copolymers with Ring-Opening Metathesis Polymerization
… Chapters 3 and 4 describe the synthesis of a gas barrier polymer, an ethylene vinyl alcohol (EVOH) copolymer, made by ROMP of 3-functional cyclooctene. Chapter 3 explores the effect of regioregularity, given by ROMP of cyclooctenes with substituents in the 3 position, on the barrier properties …
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RAC1-Mediated Actin Cytoskeleton Remodeling and Monolayer Barrier Properties of Stretched Alveolar Epithelial Cells
… due to basement membrane deformation and reduced barrier function. AECs maintain integrity of the blood-gas barrier with gasket like intercellular tight junctions (TJ) which are anchored internally to the actin cytoskeleton. Our goal was to evaluate the effect of physiologically relevant, high …
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Drying Oils Treated by Irradiation as Coatings for Biobased Films
… their performance with respect to water and gas barrier properties is inferior to current packaging products on market. Drying oils are promising as film coatings to improve water barrier properties of protein-based films. Drying oils undergo autoxidation after a period exposure to air to …
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Template-directed Assembly of Silk in Advanced Materials for Food Security
… and as packaging materials with improved gas barrier properties.
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Manufacture and Characterization of Micro-/Nano-fibrillated Composites and their Applications
… as next-generation materials for construction, gas barrier packaging, and foaming applications. However, it is still not fully understood how the fibrils’ development during processing and their final morphology are impacted by the manufacturing and material parameters. Moreover, the …
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Reliability of the Acetylene Single-Breath Method For Measuring Cardiac Output
… of the disappearance of a soluble inert gas as it diffuses across the blood-gas barrier in the lungs. The rate of disappearance of the gas is directly proportional to the flow of blood past the lungs and subsequently provides an estimate of pulmonary capillary blood flow (Qc), or Q. The …
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Schichtsilicate als effiziente Bausteine für funktionelle Nanokomposite
… yielding a nanocomposite coating with ultra-high gas barrier. Extremely low oxygen transmission rates, high transparency and flexibility ena-ble an application for efficient packaging of sensitive and flexible OLEDs. Furthermore, due to the high charge homogeneity of the synthesized layered …
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Towards Mechanical Reinforcement in Polymer Layered Silicates Nanocomposites of the Second Generation
… compounding and solution blending, respectively. Gas barrier measurements proved to be an additional independent and very sensitive probe for the dispersion quality. The solution blended samples and melt compounded samples showed permeation reductions by 60% and 30%, respectively. Maximizing the …
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Study of Hybrid Cellulose Nanocrystals in Polymeric Nanocomposites
… effects on the mechanical, thermal, moisture barrier, gas barrier, physicochemical, and optical properties was investigated. Overall, the study will support the development of innovative biobased materials.
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Structured polymer thin films: self-assembly and forced-assembly
… internal film structure, optical transparency, barrier properties, and mechanical flexibility. The focus of this thesis is on fabrication and characterization of polymer/filler composite and functional network-forming block copolymer (BCPs) thin films, utilizing both forced-assembly and …
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Respiratory behaviour and quality attributes of fresh apple slices in modified atmosphere systems
… chambers with 21.5% O₂ + 78.5% N₂ as the initial gas mixture. Secondly, the respiratory behaviour and quality changes of sliced Newtown apples of the same stock were studied for six weeks, at 1°C, in sealed flexible polymer film pouches made of high gas barrier (CL804), medium high barrier (6 mil …
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Dynamic 129Xe Magnetic Resonance Spectroscopy: Development and Application in Diverse Cardiopulmonary Diseases
… are insensitive to the underlying cause of gas exchange impairment, are unable to differentiate between phenotypes, and have limited utility in assessing disease progression or therapy response. The primary diagnostic tools for assessing pulmonary function are collectively referred to as …