Results 181 to 190 of about 109,133 (297)

The Effect of the Aging Process of Polyamide 11 Used in Flexible Pipelines and Its Influence on the Permeability of Carbon Dioxide

Polymer Engineering &Science, EarlyView.
Field degradation inducing changes in the Polyamide 11 permeability. ABSTRACT This study investigates how long‐term natural aging affects the CO2 permeability of polyamide 11 (PA11) pressure sheaths recovered from decommissioned flexible risers. PA11 samples were extracted from two 18‐year‐old risers—a gas‐lift line and an oil‐production line—and ...
Antônio Pedro Andrade da Cunha Ponciano Gomes, Frederico Gonçalves de Albuquerque Dias, Sijmon Van der Wal, Marysilvia Ferreira da Costa   +3 more
wiley   +1 more source

Comparative analysis using machine learning methods for determination of pharmaceutical solubility in supercritical CO₂ considering physical properties of drugs. [PDF]

Front Med (Lausanne)
Alshahrani SM.
europepmc   +1 more source

Electrospun conducting polymers: recent trends and the transition towards a sustainable future

Polymer International, EarlyView.
This review discusses the electrospinning of conducting polymers, detailing procedures, fibrous morphologies, improved properties, applications in electronics, and challenges, while outlining future directions for nanofibre‐based devices in various fields.
Xenofon Karagiorgis, Sofia Sandhu, Peter J. Skabara, Ravinder Dahiya   +3 more
wiley   +1 more source

Photoelectrochemically homogeneous nickel oxide photocathode composed of nanocrystals prepared by supercritical hydrothermal synthesis. [PDF]

Nanoscale Adv
Oshikiri T, Kawase T, Sato K, Ito H, Tomai T, Nakamura K, Shi X, Matsuo Y, Niinomi H, Nakagawa M.   +9 more
europepmc   +1 more source

Mechanically robust biochar‐modified polystyrene foam with enhanced flame retardancy using halogen‐free additives

Polymer International, EarlyView.
Halogen‐free biocomposite polystyrene foams were fabricated via pilot‐scale supercritical CO2 extrusion using expandable graphite, melamine polyphosphate, biochar, and recycled polymer. The optimized formulation exhibited refined cellular morphology, enhanced flame retardancy (limiting oxygen index of 25%, rapid self‐extinguishing), and improved ...
Apurv Gaidhani, Harasavardanan Velumani Jayaraman, Stephan Edwards, Lauren Tribe, Paul Charpentier   +4 more
wiley   +1 more source

Machine learning-based prediction of paracetamol solubility and CO₂ density in supercritical systems using artificial rabbits optimization. [PDF]

Sci Rep
Alotaibi HF, Khatib AOA, Hamid JA, Ganesan S, Shankhyan A, Panigrahi R, Sead FF, Sinha A.   +7 more
europepmc   +1 more source

Copolymer Synthesis of N‐Vinylacetamide and 2‐Methylene‐1,3‐Dioxepane Provides a New Degradable Polymer

Journal of Polymer Science, Volume 63, Issue 6, Page 1306-1318, 15 March 2025.
ABSTRACT N‐vinylamides, especially noncyclic N‐vinylacetamide (NVA), have been used in various applications such as biomaterials, surfactants, and hydrogels. However, their potential to copolymerize with cyclic ketene acetal (CKA) to create degradable polymers is underexplored.
Mukmin Sapto Pamungkas, Tsuyoshi Ando, Hiroharu Ajiro   +2 more
wiley   +1 more source

Supercritical CO₂ Extraction and Characterization of Lipophilic Natural Products from <i>Cornus mas</i> Fruits: Composition and Antimicrobial Activity. [PDF]

Molecules
Visentin E, De Zordi N, Cortesi A, Iseppi R, Pericolini E, Forzato C.   +5 more
europepmc   +1 more source

The continuing significance of chiral agrochemicals

Pest Management Science, Volume 81, Issue 4, Page 1697-1716, April 2025.
In the time frame 2018–2023, around 43% of the 35 chiral agrochemicals introduced to the market (herbicides, fungicides, insecticides, acaricides, and nematicides) contain one or more stereogenic centers in the molecule, and almost 69% of them have been marketed as racemic mixtures of enantiomers or stereoisomers.
Peter Jeschke
wiley   +1 more source

Efficient and green ultrasound-assisted supercritical carbon dioxide extraction of squalene from Amaranthus cruentus grains. [PDF]

Ultrason Sonochem
Liu XY, Zuo J, Li L, Ou H.
europepmc   +1 more source