Buscar
Mostrando ítems 11-20 de 288
Molar mass distribution in binary homopolymer blends by single-step two-dimensional liquid chromatography: Operation and data treatment
(Elsevier, 2016-07)
A single-step two-dimensional liquid chromatography technique is employed for estimating the individual molar mass distributions in blends of polystyrene and poly(methyl methacrylate). It involves an initial separation of ...
Anomalous Slowdown of Polymer Detachment Dynamics on Carbon Nanotubes
(American Physical Society, 2019-05)
The "wrapping" of polymer chains on the surface of carbon nanotubes allows one to obtain multifunctional hybrid materials with unique properties for a wide range of applications in biomedicine, electronics, nanocomposites, ...
Characterization of nutrient status of Halamphora luciae (Bacillariophyceae) using matrix-assisted ultraviolet laser-desorption ionization time-of-flight mass spectrometry (MALDI-TOF MS)
(Taylor & Francis Ltd, 2018-07)
The effects of N and P depletion on the production and structural characterization of the cellular carbohydrate polymers of the estuarine diatom Halamphora luciae in batch culture were examined using matrix-assisted laser ...
Correlating pH and Swelling Degree Parameters to Understand the Sorption and Desorption Process of Diquat Herbicide from Nanocomposites Based on Polysaccharide and Clinoptilolite
(2021-01-01)
Zeolite-based nanocomposites have become an efficient option for application in herbicide removal and controlled release systems. Our group previously described the degree of swelling in water and salt solutions, spectroscopic ...
Equilibrium Isotherms Of A Biodegradable Polymer Polyhydroxybutyrate (phb):heat Of Desorption Determination 661
(Italian Association of Chemical Engineering - AIDIC, 2011)
Physicochemical Properties and Proposed Mechanism in the Obtainment of 4-Hidroxycoumarin Conjugated Polymers Using MALDI-Tof Analysis
(International Organization of Scientific Research, 2016-02)
The mechanism for the poly-condensation event of conjugated polymers with ending 4-hydroxycoumarin has been proposed. It happened under H2SO4 acidic conditions only using enolic-coumarins without any substituent at third ...
Benzalkonium Chloride Surface Adsorption and Release by Two Montmorillonites and Their Modified Organomontmorillonites
(Springer, 2017-01)
Benzalkonium chloride (BAC) loaded to montmorillonites (Mt) or organomontmorillonites (OMt) generates a functional material that can be incorporated to several systems (polymers, paints, etc) as a controlled release ...
Protonic conductivity and thermal properties of cross-linked PVA/TiO2 nanocomposite polymer membranes
(2019-10-15)
Nanocomposite polymer membranes based on PVA/TiO2 were prepared by a solution casting method. Glutaraldehyde solution (GA) was used as linking agent to improve the chemical, thermal and physical properties of the membranes. ...
Water sorption of CH3- and CF3-Bis-GMA based resins with additives
(UNIV SAO PAULO FAC ODONTOLOGIA BAURUBAURU-SP, 2012)
Objectives: To evaluate the effect of additives on the water sorption characteristics of Bis-GMA based copolymers and composites containing TEGDMA, CH(3)Bis-GMA or CF(3)Bis-GMA. Material and methods: Fifteen experimental ...