Results 91 to 100 of about 22,510 (245)

Reusable Polyphenol Building Blocks Enable Recyclable Epoxy‐Amine Thermosets via Methanolysis

Angewandte Chemie, EarlyView.
A biobased epoxy–amine platform was developed using functional building blocks derived from polyphenols. These thermosets exhibited tunable mechanical and thermal properties, together with efficient, catalyst‐free chemical recycling via methanolysis. Beyond the recovery of reusable building blocks, the recycled polyols could be further upcycled into ...
Yi‐Min Tu, Yuhang Jiang, Kun Li, Qing Cao, Yizhe Pan, Christoph Tzschucke, Andreas J. Achazi, Rainer Haag   +7 more
wiley   +2 more sources

The Correlation Between the Chemical Composition and the Microstructure of the Polysaccharides of Two Varieties of Mexican Red Prickly Pear Fruits

Foods
The red prickly pear fruit (Opuntia ficus-indica L. Mill), endemic from Mexico’s semi-desert regions and present in North Africa and Southern Europe, particularly Italy and Spain, is a valuable source of nutrients, bioactive compounds, and ...
Yvonne Roman Maldonado, Socorro Josefina Villanueva-Rodríguez, Hilda María Hernández-Hernández, Eduardo Terrés, Jesus Cervantes Martinez   +4 more
doaj   +1 more source

Multi‐Property Machine Learning Models to Accelerate the Transition Toward Bio‐Based Emulsion Polymers

Advanced Intelligent Discovery, EarlyView.
A machine learning framework simultaneously predicts four critical properties of monomers for emulsion polymerization: propagation rate constant, reactivity ratios, glass transition temperature, and water solubility. These tools can be used to systematically identify viable bio‐based monomer pairs as replacements for conventional formulations, with ...
Kiarash Farajzadehahary, Nicholas Ballard   +1 more
wiley   +1 more source

Closed‐Loop Recyclable Solid Polymer Electrolytes via Dynamic Lipoate Cross‐Linking

Angewandte Chemie, EarlyView.
A visible‐light‐driven, closed‐loop recyclable solid polymer electrolyte is built from a bio‐derived lipoate cross‐linker, poly(ethylene glycol) bis(lipoate) (PEG‐LP2), synthesized from α‐lipoic acid. Dynamic disulfide exchange enables efficient DBU‐catalyzed depolymerization and photo‐repolymerization, regenerating membranes that retain high ionic ...
Qian Huang, Jeet Sharma, Yingna Ding, Kenny Lee, Craig J. Hawker, Dipan Kundu, Cyrille Boyer   +6 more
wiley   +2 more sources

Pectin Extraction Process from Cocoa Pod Husk (Theobroma cacao L.) and Characterization by Fourier Transform Infrared Spectroscopy

ChemEngineering
The Cocoa Pod Husk (CPH) accounts for 67–76% of the total cocoa fruit weight, making it its main agro-industrial waste of cocoa production. A valorization of this waste is possible through the extraction of pectin.
Ismael Santiago-Gómez, Areli Carrera-Lanestosa, Fanny Adabel González-Alejo, Zenaida Guerra-Que, Ricardo García-Alamilla, José Luis Rivera-Armenta, Pedro García-Alamilla   +6 more
doaj   +1 more source

pH‐Responsive Ultrasmall Iron Oxide Nanoassemblies for Activatable T2/T1 Magnetic Resonance Imaging

Advanced NanoBiomed Research, EarlyView.
This research reports a pH‐responsive ultrasmall iron oxide nanoparticle (USIONs)/polymer nanoassemblies for activatable magnetic resonance imaging. Amphiphilic diphosphonic acid block copolymers compactly encapsulate USIONs to generate T2‐weighted contrast at physiological pH, while acidic conditions trigger disassembly, activating T1‐weighted ...
Xumin Huang, Liwei Liu, Jiayuan Zhu, Xinghao Hu, Changkui Fu, Yao Wang, Lining Arnold Ju, Thomas P. Davis, Andriansjah Rukmana, Shaohua Ma, Zheng Zhang, Ruirui Qiao   +11 more
wiley   +1 more source

White‐Light‐Mediated Imidazole Catalysis Toward Terpene‐Based Thermosets

Angewandte Chemie, EarlyView.
White‐light irradiation enables the photoinitiator‐free curing of fully bio‐based terpene epoxy–anhydride systems. A light‐induced switch in epoxide ring‐opening selectivity leads to colorless, transparent thermosets with enhanced thermomechanical performance, revealing an unexpected pathway for sustainable terpene‐based network formation.
Chenxi Zhang, Sandra Olivero, Alice Mija, Véronique Michelet   +3 more
wiley   +2 more sources

Exploring value-adding components from different varieties of arabica coffee pulps for sustainable resource utilisation

Circular Agricultural Systems
Coffee processing produces substantial agricultural byproducts, notably pulp, which is known to harbour valuable bioactive compounds. Nevertheless, a considerable knowledge gap remains concerning the phyto-compositions of the extracts from the diverse ...
Titita Bunyarit, Kiattisak Huanhong, Tibet Tangpao, Piyachat Sunanta, Jiraporn Sangta, Anurak Muangsanguan, Warintorn Ruksiriwanich, Shashanka K Prasad, Sarana Rose Sommano, Malaiporn Wongkaew   +9 more
doaj   +1 more source

A Tert‐Alkyl Terephthalate Derivative as a Universal Degradable Unit for Condensation Polymers

Angewandte Chemie, EarlyView.
A sterically bulky dicarboxylic acid core bearing a tertiary alkyl ester enables photocatalytic C─O bond cleavage via generation of a stabilized tertiary alkyl radical. Incorporated into polyarylate, polyurethane, and polyester, this universal trigger facilitates efficient degradation under identical conditions (up to 99% within 2–4 h). Remarkably, the
Yasuyuki Nitta, Ryosuke Nishikuma, Souya Kouda, Masatoshi Ohyama, Meiki Shinoda, Tsuyoshi Taniguchi, Takashi Koike, Takashi Nishikata   +7 more
wiley   +2 more sources

Methyl-Esterification, Degree of Polymerization and ∆4,5-Unsaturation of Galacturonic Acid Oligosaccharides as Determinants of Immunomodulation

Carbohydrate Polymers
In recent years, immunomodulation by pectin and pectin-derived galacturonic acid oligosaccharides has been the subject of wide-spread scientific research due to the potential of different pectin structures as bioactive biomolecules. Yet, gaps remain in understanding the structure-dependent immunomodulation of galacturonic acid.
Zwolschen, J.W., Tomassen, M.M.M., Vos, A.P., Schols, H.A.   +3 more
openaire   +2 more sources