Results 61 to 70 of about 210,290 (334)

Chemoselective Sequential Polymerization: An Approach Toward Mixed Plastic Waste Recycling

open access: yesAdvanced Functional Materials, EarlyView.
Inspired by biological protein metabolism, this study demonstrates the closed‐loop recycling of mixed synthetic polymers via ring‐closing depolymerization followed by a chemoselective sequential polymerizations process. The approach recovers pure polymers from mixed feedstocks, even in multilayer formats, highlighting a promising strategy to overcome a
Gadi Slor   +5 more
wiley   +1 more source

Helmet of a laminate construction of polycarbonate and polysulfone polymeric material [PDF]

open access: yes, 1991
An article of laminate construction is disclosed which is comprised of an underlayer of polycarbonate polymer material to which is applied a chemically resistant outer layer of polysulfone.
Dawn, Frederic S., Kosmo, Joseph J.
core   +1 more source

Influence of Interface Scattering on Shock Waves in Heterogeneous Solids [PDF]

open access: yes, 2002
In heterogeneous media, the scattering due to interfaces between dissimilar materials play an important role in shock wave dissipation and dispersion. In this work the influence of interface scattering effect on shock waves was studied by impacting flyer
Hodowany, Jon   +3 more
core   +2 more sources

Bio-based polycarbonate as synthetic toolbox

open access: yesNature Communications, 2016
Completely bio-based poly(limonene carbonate) is a thermoplastic polymer, which can be synthesized by copolymerization of limonene oxide (derived from limonene, which is found in orange peel) and CO2.
Oliver Hauenstein   +2 more
semanticscholar   +1 more source

Bioinspired Bromination Enables Extensible, Strain‐Stiffening Resilin Peptide Scaffolds with Tunable Degradation

open access: yesAdvanced Functional Materials, EarlyView.
Bioinspired bromination of a resilin‐derived peptide enables the fabrication of electrospun nanofibrous scaffolds that uniquely combine strain‐stiffening elasticity, proteolytic stability, and antioxidant functionality. These brominated peptide–gelatin hybrids mimic the extensibility of natural elastomers, demonstrating tunable mechanical resilience ...
Elisa Marelli   +6 more
wiley   +1 more source

Estabilidade de fases em blendas de policarbonato-poliestireno avaliada por micro-FTIR, análise térmica e microscopia eletrônica de varredura Phase stability of polycarbonate-polystyrene blends evaluated by micro-FTIR, thermal analyses and scanning electron microscopy

open access: yesPolímeros, 2004
Nos últimos anos tem-se verificado uma acentuada desaceleração no desenvolvimento de novos homopolímeros, e nota-se um crescente interesse no estudo e desenvolvimento de processos que misturam os polímeros já existentes, dando origem às blendas ...
Rodrigo L. Oréfice   +2 more
doaj   +1 more source

Electrosynthesis of Bioactive Chemicals, From Ions to Pharmaceuticals

open access: yesAdvanced Functional Materials, EarlyView.
This review discusses recent advances in electrosynthesis for biomedical and pharmaceutical applications. It covers key electrochemical materials enabling precise delivery of ions and small molecules for cellular modulation and disease treatment, alongside catalytic systems for pharmaceutical synthesis.
Gwangbin Lee   +4 more
wiley   +1 more source

Effectiveness and biocompatibility of tooth aligners made from polyethylene terephthalate glycol (PeT-G), Polypropylene (PP), Polycarbonate (PC), Thermoplastic Polyurethanes (TPUs), and Ethylene-Vinyl acetate (EVA): A systematic review

open access: yesJournal of Pharmacy and Bioallied Sciences
Objective: This systematic review examines the efficacy and biocompatibility of orthodontic clear aligner tooth aligners constructed from polyethylene terephthalate glycol (PeT-G), polypropylene (PP), polycarbonate (PC), thermoplastic polyurethanes (TPUs)
Preetham Ravuri   +6 more
doaj   +1 more source

Electrical noise properties in aging materials

open access: yes, 2004
The electric thermal noise has been measured in two aging materials, a colloidal suspension (Laponite) and a polymer (polycarbonate), presenting very slow relaxation towards equilibrium.
Bellon, L.   +3 more
core   +4 more sources

Preparation and characterization of polycarbonate/multiwalled carbon nanotube nanocomposites

open access: yesBeilstein Journal of Nanotechnology, 2017
A polymer nanocomposite was produced by ultrasonic-assisted dispersion of multiwalled carbon nanotubes (MWCNTs) in a polycarbonate matrix using p-xylene and dichloromethane as the solvents.
C. Larosa   +5 more
semanticscholar   +1 more source

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