Results 141 to 150 of about 744,512 (295)

Second‐Life Thermoset Manufacturing via Mild Solvolysis of Epoxy‐Matrix Composites and Wet‐Laid Mat Production

Polymer Composites, EarlyView.
From end‐of‐life pultruded CFRP profiles (1) to second life composites (7) through mild solvolysis (2,3), wet‐laid nonwoven mat fabrication (4), resin impregnation (5), and compression molding (6). ABSTRACT The growing use of carbon fiber–reinforced thermosets has led to the accumulation of significant composite waste, posing environmental and economic
Ehsan Zolfaghari, Fabian Rechsteiner, Violetta Schumm, Emanuela Muscolino, Sabina Alessi, Nadka Tz. Dintcheva, Clelia Dispenza   +6 more
wiley   +1 more source

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

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

Extração de óleo essencial de capim-limão com dióxido de carbono a altas pressões :: modelagem matemática, ajuste de parâmetros e scale-up do processo / [PDF]

, 2000
Dissertação (Mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico.Óleo essencial de capim-limão foi extraído com dióxido de carbono a diferentes condições de pressão e temperatura.
Carlson, Luiz Henrique Castelan
core  

Recent Advances in Microalgae‐Based Functional Coatings and Films for Food Packaging Applications: Opportunities and Challenges

Packaging Technology and Science, EarlyView.
Microalgae‐derived bioactive compounds exhibit strong antioxidant and antimicrobial properties and can be incorporated into edible coatings to enhance food quality and shelf life. These materials offer sustainable, biodegradable alternatives to conventional packaging, with promising potential for future scalable food applications.
Madhu Gaidher, Nidhi Bhardwaj, Sachin Sharma, Akanksha Singh, Kanika Dulta, P. K. Chauhan, Pooja Yadav, Hira Iqbal, Helen Onyeaka, Soumya Ghosh   +9 more
wiley   +1 more source

Solar‐Powered Water Depollution Through a Bioinspired Device Based on ZIF‐8 Loaded Macroporous Hydrogels Prepared via Ice‐Templating

Small, EarlyView.
ABSTRACT Water pollution poses a constant threat to the environment and is one of the central causes for global shortage of clean water. Metal–Organic Frameworks (MOFs) have emerged as highly efficient adsorbents; however, their application is limited by their common production as fine powders, which hinders recovery and reuse.
Katsuya Komiyama, Jonathan Bachir, Francisco M. Fernandes, Clémence Sicard   +3 more
wiley   +1 more source

A Versatile Heterometallic Microporous MOF for Photocatalytic Hydrogen Generation

Small, EarlyView.
This work describes a green and scalable approach to robust and flexible heterometallic MOFs, MIP‐215's, with tunable photoactivity for efficient, noble‐metal‐free solar hydrogen production. ABSTRACT Photocatalytic particulate systems offer a cost‐effective solar hydrogen production but are generally limited by narrow visiblelight absorption and poor ...
Xingze Wang, Juan José Ramírez‐Hernández, Iurii Dovgaliuk, Valentin Diez Cabanes, Debanjan Chakraborty, Herme G. Baldoví, Hermenegildo García, Guillaume Maurin, Sergio Navalon, Georges Mouchaham, Christian Serre   +10 more
wiley   +1 more source

Characterization of the Pore Environments in Covalent Organic Frameworks by Dynamic Spin Probe Exchange

Small, EarlyView.
Covalent organic frameworks (COFs) with alkyl or triethylene glycol pore linings are probed with water‐dissolved nitroxide radicals using CW EPR spectroscopy. Adsorption affinity, local polarity, and radical concentration inside the pores are quantified, revealing hydrogen bonding, dipolar, and π‐π interactions that govern guest binding, which ...
Sebastian Michler, Simona Bassoli, Luisa Voigt, Makhily Diaby, Dariush Hinderberger, Frederik Haase   +5 more
wiley   +1 more source

Downsize Effect on Photocatalytic Syngas Production of a 2D Metal Organic Framework—Tuning the Selectivity From HER to CO2RR via Dimensional Modulation and Mechanical Exfoliation of 2D Metal‐Organic Layers

Small Methods, EarlyView.
A cobalt(II) 2D MOF (2D) has been downsized by covalent bond breaking to form a 1D MOF (1D) and by sonication, to form a 2D exfoliated MOF (2D‐ex). Photocatalytic CO2 reduction shows that 2D and 1D lead to H2‐enriched syngas, whereas 2D‐ex leads to CO‐enriched syngas.
Rajat Saha, Manuel Molina‐Muriel, Fernando Déniz, Mahesh Eledath Changarath, Antonio Ribera, Samia Benmansour, Juan F. Sánchez‐Royo, Josep Canet‐Ferrer, Debmalya Ray, Hermenegildo García Gómez, Carlos J. Gómez García   +10 more
wiley   +1 more source

Biodiesel Production from Hevea brasiliensis Seeds: A Systematic Review

Vietnam Journal of Chemistry, EarlyView.
ABSTRACT The Hevea brasiliensis (HB) species, also called the rubber tree, is currently cultivated worldwide for the extraction of latex, an input for rubber production. In addition, its seeds currently have few productive applications, despite their high oil content.
Sara Lüneburger, Giovano Tochetto, Letiére Cabreira Soares, André Lazarin Gallina   +3 more
wiley   +1 more source