Results 21 to 30 of about 149,499 (333)

Radical Chain End Chemical Transformation of SG1-Based Polystyrenes

open access: yes, 2010
International audienceRadical chain end functionalization of polystyrene previously prepared by NMP using the SG1 nitroxide was investigated. Hydroxy-functional polystyrenes were easily prepared by two different pathways: via an exchange with TEMPO ...
Y. Guillaneuf   +5 more
semanticscholar   +2 more sources

Overcoming Energy Storage‐Loss Trade‐Offs in Polymer Dielectrics Through the Synergistic Tuning of Electronic Effects in π‐Conjugated Polystyrenes [PDF]

open access: yesAdvanced Science
Achieving high‐performance dielectric materials remains a significant challenge due to the inherent trade‐offs between high energy storage density and low energy loss.
Yipin Cheng   +6 more
doaj   +2 more sources

A non-binding surface demonstrates increased thrombogenicity under plasma-free conditions [PDF]

open access: yesScientific Reports
Although the commercially available, non-binding microplate is characterised as a low-fouling material, its suitability for the study of platelet function in basic research has yet to be determined.
Cezary Watala   +3 more
doaj   +2 more sources

Positron annihilation spectroscopy of chain-end-functionalized polystyrenes with definite numbers of benzyl alcohol and perfluorooctyl groups [PDF]

open access: yesPolímeros, 2020
A series of well-defined chain-end-functionalized polystyrenes with a definite number of benzyl alcohol and perfluorooctyl groups [PS(BnOH)n & PS(BnORf)n, respectively] linearly aligned in a double line at the chain-ends were prepared and investigated ...
Kamal Reyad Mahmoud   +2 more
doaj   +1 more source

Upcycling Polystyrene

open access: yesPolymers, 2022
Several environmental and techno-economic assessments highlighted the advantage of placing polystyrene-based materials in a circular loop, from production to waste generation to product refabrication, either following the mechanical or thermochemical routes.
Jaworski C. Capricho   +4 more
openaire   +3 more sources

Utilization of Eggshell as Valuable Products for Sustainable Ecosystem and Agriculture (Review) [PDF]

open access: yesPoultry Science Journal, 2021
Discarded as waste with the production of several tonnes per day, eggshell is a solid waste from poultry industry. Eggshell waste disposal pollutes the ecosystem by being accumulated in landfills, invites insects,   which involves high management cost ...
Hana Burezq
doaj   +1 more source

Photochemical Upcycling/Modification of Polystyrene-based Plastic Waste

open access: yesCHIMIA, 2023
The escalating accumulation of plastic waste in landfills and marine environments has become a pressing concern to society. Among all plastic-based waste, polystyrenes are widely utilized as a commodity plastic and present very low recyclability.
Yuman Qin, Shoubhik Das
doaj   +1 more source

A short review of the photomechanical effect in azo-containing amorphous (glassy) polymers

open access: yeseXPRESS Polymer Letters, 2021
The photomechanical effect has been studied so far mainly in elastomers, but recently more and more publications, in which this effect is studied for other materials too, so-called glassy or amorphous polymers (in particular polyimides), have appeared ...
J. Konieczkowska   +2 more
doaj   +1 more source

Hybrid Pd-Nanoparticles within Polymeric Network in Selective Hydrogenation of Alkynols: Influence of Support Porosity

open access: yesMolecules, 2022
This work is addressing the selective hydrogenation of alkynols over hybrid catalysts containing Pd-nanoparticles, within newly synthesized hyper-cross-linked polystyrenes (HPS). Alkynols containing C5, C10, and C20 with a terminal triple bond, which are
Linda Z. Nikoshvili   +4 more
doaj   +1 more source

Preparation of Functional Long‐Subchain Hyperbranched Polystyrenes via Post‐polymerization Modification: Study on the Critical Role of Chemical Stability of Branching Linkage

open access: yesChemistryOpen, 2020
Post‐polymerization modification (PPM) is one of the most powerful strategy for preparing polymers with functional groups that cannot be synthesized by direct polymerization.
Mo Zhu   +4 more
doaj   +1 more source

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