Results 71 to 80 of about 74,679 (236)

Partially Biobased Polyurethanes With Reversibly Crosslinkable Furan Units Toward Recyclable Thermosetting Textile Fibres

Chemistry – A European Journal, EarlyView.
A molecular design strategy combines lignin‐derived aromatic units, sugar‐derived furan groups, and flexible glycol segments to create wet‐spinnable polyurethanes. Thermally reversible Diels–Alder crosslinking chemistry enables formation of crosslinked thermosetting fibers, repeated de‐crosslinking/re‐crosslinking cycles, and tunable fiber properties ...
Rafael N. L. Menezes, Fredrik Bäcklund, Tam T. Nguyen, Maria Maukonen, Zengwei Guo, Olga Gordivska, Cecilia Hansson, Baozhong Zhang   +7 more
wiley   +1 more source

Synthesis of new derivatives of 1-[1-(2-pyridyl)-imidazolidine-2-ylidene]-3-aryl(arylakyl)ureas

Current Issues in Pharmacy and Medical Sciences, 2012
The synthesis and physicochemical properties of new 1-[1-(2-pirydyl)imidazoline-2-ylidene]-3-aryl(arylalkyl)ureas [I-VIII]. The title compounds were obtained by condensation of 1-(2-pirydyl)-2-aminoimidazoline-2 with aryl isocyanate or arylalkyl ...
Elżbieta Szacoń, Marzena Rządkowska, Dariusz Matosiuk   +2 more
doaj   +1 more source

Learning Strategies from Nature's Blueprint to Cyclic Carbonate Synthesis

ChemSusChem, Volume 18, Issue 6, March 15, 2025.
The development of sustainable synthetic methods for cyclic carbonates draws inspiration from nature, focusing on eco‐friendly processes and renewable resources like CO2 and biomass. This review explore various CO2 activation mechanisms, green chemistry principles, and green catalysts.
Erika Saccullo, Vincenzo Patamia, Chiara Zagni, Antonio Rescifina, Giuseppe Floresta   +4 more
wiley   +1 more source

Circular and Bio‐Sourced Polymers for Energy Applications: Natural Feedstocks, Recycling, and Upcycling Routes

EcoEnergy, EarlyView.
This review provides a critical comparative analysis of circular and bio‐sourced polymers for energy storage, systematically evaluating natural feedstocks alongside recycling and upcycling strategies for battery components. Key structure–property–performance relationships and inherent trade‐offs between sustainability metrics and electrochemical ...
Priyank Sinha, Amul Jain, Koushik Mahata, Sanjib Banerjee   +3 more
wiley   +1 more source

Modification of polyester fiber by blocked isocyanate impregnating solution and its adhesion to styrene-butadiene rubber

Hecheng xiangjiao gongye
Polyester fiber was modified by blocked isocyanate impregnation system instead of resorcinol-formaldehyde-latex impregnation system. The effects of the amount of 2,2-dimethylolbutyric acid (DMBA) and the mass ratio of blocked isocyanate to butadiene ...
YANG Xue-qi, LIU Yao-wei, SHEN Mei, LIU Li, LI Lin
doaj   +1 more source

Vegetable oils: a source of polyols for polyurethane materials

Oilseeds and fats, crops and lipids, 2016
This manuscript is dedicated to the literature on vegetable oil-based polyurethanes via the isocyanate/alcohol route. A lot of efforts have been made to replace petroleum-based resources.
Maisonneuve Lise, Chollet Guillaume, Grau Etienne, Cramail Henri   +3 more
doaj   +1 more source

Nonthermal Plasma–Enabled Cascade N2 Activation and Electroreduction

EcoEnergy, EarlyView.
Integrating plasma‐assisted NOx synthesis with subsequent electrochemical reduction enables the sustainable synthesis of high‐value N‐containing chemicals under ambient conditions. ABSTRACT The development of sustainable nitrogen fixation technologies operating under ambient conditions is critical for reducing the energy intensity and carbon footprint ...
Shijia Li, Wei Gao, Ziyun Wang
wiley   +1 more source

Flexible Phase Change Bandage Incorporated With Zeolite for Temperature‐Controlled Wound Hemostasis

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
A novel flexible hemostatic phase change bandage (HPB) was designed and constructed through chemical cross‐linking and electrospinning to mitigate thermal injury and broaden the application of PCMs in the medical field. Furthermore, the flexible HPB shows thermal stability, strong mechanical strength, excellent infiltration, and reliable thermal ...
Xinyu Zhang, Keyan Sun, Hanqing Liu, Shihui Zhang, Yan Kou, Haocheng Fu, Zicheng Lu, Yongfei Zhao, Quan Shi   +8 more
wiley   +1 more source

Exploring the Impact of the Synthesis Variables Involved in the Polyurethane Aerogels-like Materials Design

Gels
This research presents a novel approach to synthesising polyurethane (PUR)-based aerogels at the pilot scale, optimizing synthesis variables such as the gelation solvent, solids content, chain extender/isocyanate ratio, and dispersion mode.
Esther Pinilla-Peñalver, Darío Cantero, Amaya Romero, Luz Sánchez-Silva   +3 more
doaj   +1 more source

Photoreversible Polyurea Actuators With Spatiotemporal Control and Adaptive Mechanics

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
A light–thermal responsive polyurea network incorporating reversibly dimerizable anthracene units enables spatiotemporal modulation of cross‐linking density and nearly 400‐fold stiffness tuning. Integrating programmable anisotropy, photopatterning, self‐healing, and photowelding within a single framework, this bioinspired “one network–multifunction ...
Zhiwen Song, Wang Li, Xinru Guo, Rui Pu, Wenxin Wang, Yujun Cheng, Liang Shen, Fei Gao   +7 more
wiley   +1 more source