Results 1 to 10 of about 23,945 (314)

Physicochemical Characterization of Polyvinyl Pyrrolidone: A Tale of Two Polyvinyl Pyrrolidones [PDF]

open access: yesACS Omega, 2020
Of several samples of polyvinyl pyrrolidone (PVP) used to coat and stabilize freshly manufactured aqueous dispersions of silver nanoparticles, one batch gave anomalous results: the dispersion maintained continued stability, even on extensive dilution. Our efforts to understand this desirable feature concluded that the generally used spectral method of ...
Laura Karina Mireles   +4 more
openaire   +3 more sources

Preparation and characterization of innovative poly(butylene adipate terephthalate)-based biocomposites for agri-food packaging application [PDF]

open access: yes, 2022
The present work reports on the preparation and subsequent mechanical, morphological and thermal characterization of composites based on poly(butylene adipate terephthalate) (PBAT), reinforced with micro-particles of inorganic bioabsorbable calcium ...
Alberto Giubilini   +6 more
core   +5 more sources

Sediment grain size determines microplastic exposure landscapes for sandy beach macroinfauna [PDF]

open access: yes, 2021
Despite the global occurrence of microplastic contamination on sandy beaches, evidence of microplastic distribution within beaches remains contradictory.
Celentano, Eleonora   +6 more
core   +1 more source

Accuracy of different impression materials in parallel and nonparallel implants

open access: yesDental Research Journal, 2015
Background: A precise impression is mandatory to obtain passive fit in implant-supported prostheses. The aim of this study was to compare the accuracy of three impression materials in both parallel and nonparallel implant positions.
Mahroo Vojdani   +2 more
doaj   +1 more source

Elevação da taxa de estruturação de concretos para impressão 3D: o efeito de aditivos modificadores de viscosidade [PDF]

open access: yes, 2020
In the last decades, 3D printing has emerged as a promising new paradigm for manufacturing. Even in the civil construction industry, it has gained attention from companies and researchers around the world.
Hasse, J. A.   +3 more
core   +2 more sources

Microplastics and synthetic particles ingested by deep-sea amphipods in six of the deepest marine ecosystems on Earth [PDF]

open access: yes, 2019
Funding Funding for the laboratory work and analysis was from Newcastle University internal support. This work was supported by the 2007–2010 HADEEP project, funded by the Nippon Foundation (2009765188) and the Natural Environmental Research Council (NE ...
Brooks, L. S.R.   +5 more
core   +2 more sources

Green process intensification using microreactor technology for the synthesis of biobased chemicals and fuels [PDF]

open access: yes, 2022
Microreactor technology as an important means of process intensification has opened vast opportunities for green and sustainable chemical synthesis. Over the past decade, a promising research direction has been seen in the utilization of microreactors ...
Yue, Jun
core   +1 more source

Effect of Polyvinyl Pyrrolidone on Polyvinyl Chloride-Graft-Acrylamide Membranes [PDF]

open access: yesEngineering and Technology Journal, 2020
Polyvinyl-chloride (PVC) was dehydrochlorinated by alkaline-solution (NaOH) in determining molarity (3.0 M) followed by grafting with acrylamide (AM) monomer onto dehydrochlorinated PVC (DHPVC) backbone by free-radical graft copolymerization to produce new grafted polymer referred as graft 3M. Then investigated the effect of polyvinyl pyrrolidone (PVP)
Maha J. M. Al-Bahate   +2 more
openaire   +2 more sources

Gas separations using mixed matrix membranes [PDF]

open access: yes, 2000
Mixed matrix membranes capable of separating carbon dioxide from mixtures including carbon dioxide and methane, and processes for purifying methane using the membranes, are disclosed.
De Q. Vu   +3 more
core   +1 more source

Bio-based aliphatic/aromatic poly(trimethylene furanoate/sebacate) random copolymers:Correlation between mechanical, gas barrier performances and compostability and copolymer composition [PDF]

open access: yes, 2022
Highly promising fully biobased random copolyesters, poly(trimethylene 2,5-furandicarboxylate-co-trimethylene sebacate) (PTFcoPTSeb), were synthesized by using bio derived 1,3-propanediol, dimethyl ester of 2,5- furandicarboxylic acid, and sebacic acid ...
Guidotti, Giulia   +6 more
core   +1 more source

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