Results 61 to 70 of about 22,200,452 (296)

Evaluation of decomposition kinetics of poly (ether-ether-ketone) by thermogravimetric analysis [PDF]

open access: yesMaterials Research, 2013
The non-isothermal thermogravimetric methods have been used extensively for the determination of kinetic parameters in polymers. The poly (ether ketones) are used as matrix in advanced high performance composites due its high thermal stability, excellent
Gibran da Cunha Vasconcelos   +4 more
doaj   +1 more source

Thermogravimetric analysis of commercial thermally modified wood [PDF]

open access: yes, 2015
In the article the results are shown of a thermogravimetric analysis of four thermally modified wood species. Thermally modified wood before and after the extraction process was used for the tests.
Grzeskowiak, W.L., Bartkowiak, M.
core   +1 more source

Dimensionality‐Driven Interfacial Electronic Coupling in Carbon‐Supported Gd‐CuO Catalysts for Selective CO2 Electroreduction to Ethylene

open access: yesAdvanced Functional Materials, EarlyView.
The 2D carbon‐supported Gd–CuO exhibits strong interfacial electronic coupling, abundant oxygen vacancies, and highly exposed active sites, enabling efficient CO enrichment and C─C coupling toward selective and durable CO2‐to‐C2H4 conversion. ABSTRACT Copper‐based catalysts are promising for electrochemical CO2 reduction toward value‐added chemicals ...
Xueya Zhu   +11 more
wiley   +1 more source

Photo‐Switchable Molecular Module Programming PET Biodegradation in Aquatic Environments

open access: yesAdvanced Functional Materials, EarlyView.
We address the plastic durability paradox by integrating an itaconic acid–derived pyrrolidone module into polymer backbones. Sunlight in water triggers Norrish Type I ring‐opening and hydrophilization, enabling rapid biodegradation into nontoxic minerals.
Mohammad Asif Ali   +16 more
wiley   +1 more source

Thermogravimetric analysis of wheatleyite Na2Cu2+(C2O4)2.2H2O [PDF]

open access: yes, 2008
Evidence for the existence of primitive life forms such as lichens and fungi can be based upon the formation of oxalates. These oxalates form as a film like deposit on rocks and other host matrices.
Locke, Ashley J.   +5 more
core   +1 more source

Oligoethylene Glycol Side‐Chain Engineering of Y6‐Derived Nonfullerene Acceptors for Thermally Induced Spontaneous Pseudo‐Planar Heterojunction Organic Photodetectors

open access: yesAdvanced Functional Materials, EarlyView.
OEG‐functionalized Y6‐derived acceptors induce thermally driven vertical phase separation, enabling pseudo‐planar heterojunction organic photodetectors. The resulting PM6:YTEG‐4F and PM6:YTEG‐4Cl organic photodetectors suppress dark current density by approximately 260‐fold and 210‐fold, respectively, while maintaining efficient photoresponse ...
Se Jeong Park   +11 more
wiley   +1 more source

Thermogravimetric analysis and non-isothermal kinetics of hydrocarbon-rich petroleum residues

open access: yesSustainable Chemistry for Climate Action
Hydrocarbon-rich petroleum residues (HRPR), often obtained from the middle-and downstream processing of crude oil, present significant disposal and environmental challenge.
May Ali Alsaffar   +2 more
doaj   +1 more source

A Non-isothermal Thermogravimetric Kinetic Analysis of Malaysian Sewage Sludge

open access: yesMATEC Web of Conferences, 2014
Dewatered sewage sludge is one of the largest contributors of waste material in Malaysia and it indirectly elevates local environmental problems. Previous studies have indicated sewage sludge as a potential alternative fuel based on its higher heating ...
Abbas A.H   +3 more
doaj   +1 more source

Thermogravimetric analysis of vinylacetate‐vinylbutyrate copolymers [PDF]

open access: yesDie Angewandte Makromolekulare Chemie, 1976
AbstractThe composition of copolymers of vinylacetate (VAc) and vinylbutyrate (VB) can be determined rapidly and satisfactorily by dynamic thermogravimetric analysis (TGA), in spite of the fact that both acetic and butyric acid are abstracted simultaneously and incompletely from their respective segments.
Meer, van der, R., German, A.L.
openaire   +1 more source

Graded Metallopolymer Structures with Shape‐Memory Abilities via DLP‐Based 3D‐Printing

open access: yesAdvanced Functional Materials, EarlyView.
This study presents the digital light processing (DLP) based 3D printing of graded metallopolymers featuring shape‐memory abilities. The permanent shape can be recovered in two distinct steps with excellent rates. The obtained graded prints range from simple rod‐like structures to complex hollow materials.
Michael Klein   +6 more
wiley   +1 more source

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