Results 11 to 20 of about 19,174 (263)

Sustainable Dielectric Films with Ultralow Permittivity from Soluble Fluorinated Polyimide

Molecules, 2023
In the rapidly growing area of high-frequency communications, polyimide films with ultralow dielectric constant and dielectric loss, adequate insulating strength, and recyclability are in high demand.
Hejian Li, Xiangyi Kong, Shixiao Wang, Min Gong, Xiang Lin, Liang Zhang, Dongrui Wang   +6 more
doaj   +1 more source

Highly adsorption of alginate/bentonite impregnated TiO2 beads for wastewater treatment: Optimization, kinetics, and regeneration studies [PDF]

Caspian Journal of Environmental Sciences, 2023
In this work, we prepared an eco-friendly, simple, stable new adsorbent SA-Bn-TiO2 NPs hydrogel and Comparative between SA-Bn-TiO2 NPs, SA-Bn, and TiO2 NPs surfaces as adsorbents.
Zainab D. Alhattab, Aseel M. Aljeboree, Mohammed Abed Jawad, Fatime Satar Sheri, Ahmed Kareem Obaid Aldulaim, Ayad F. Alkaim   +5 more
doaj   +1 more source

Molecular design of recyclable thermosetting polyimide and its composite with excellent mechanical and tribological properties

Friction, 2023
Recyclability of thermosetting polymers and their composites is a challenge for alleviating environmental pollution and resource waste. In this study, solvent-recyclable thermosetting polyimide (PI) and its composite were successfully synthesized.
Xiaoyue Wang, Zenghui Yang, Tingmei Wang, Qihua Wang, Xinrui Zhang, Song Li   +5 more
doaj   +1 more source

Unlocking the Potential of Deep Eutectic Solvents for C–H Activation and Cross-Coupling Reactions: A Review

Molecules, 2023
Green chemistry principles have underpinned the development of deep eutectic solvents (DESs). In this brief overview, we discuss the potential of DESs as a greener alternative to volatile organic solvents for cross-coupling and C–H activation reactions ...
Yassine El Baraka, Ghanem Hamdoun, Nabil El Brahmi, Saïd El Kazzouli   +3 more
doaj   +1 more source

An Improvement on the End-of-Life of High-Speed Rail Rolling Stocks Considering CFRP Composite Material Replacement

Frontiers in Built Environment, 2019
It is undeniably true that transportation systems positively impact human life but, the use of transportation systems also emits greenhouse gasses in the environment which leads to global warming.
Panrawee Rungskunroch, Panrawee Rungskunroch, Sakdirat Kaewunruen, Zuo-Jun Shen   +3 more
doaj   +1 more source

Sustainable and recyclable thermosets with performances for high technology sectors. An environmental friendly alternative to toxic derivatives

Frontiers in Materials, 2023
This study focuses on the development of environmentally friendly and chemically recyclable thermosets using or a renewable based monomer, the triglycidyl ether of phloroglucinol (TGPh), or a commercial non-toxic tris(4-hydroxyphenyl) methane triglycidyl
Roxana Dinu, Ugo Lafont, Olivier Damiano, Alice Mija   +3 more
doaj   +1 more source

Study of the occurrence law of iron in different types of sorting tailings of Anshan-type low-grade hematite

工程科学学报, 2021
Anshan-type low-grade hematite ore is one of the most important types of iron ore in China. It is usually separated by a combined process of gravity concentration-magnetic separation-reverse flotation.
Rui-yang ZHANG, Yu-yu MAO, Zheng-yao LI, Dong LI, Xue-jin ZHANG   +4 more
doaj   +1 more source

Recycling. Lead Recycling.

Shigen-to-Sozai, 1997
Because of the steady increase in car population and the mounting of enviromental concern, lead consumption ratio for lead-acid batteries is tending to gradually increase. As a result of this fact, itis important to establish new reliable collection, treatment, and recycling system of used lead-acidbatteries that would not to be effected by the ...
Masao HIRANO, Fumitaka SAKURAI
openaire   +2 more sources

Design, Fabrication and Characterization of Multi‐Yolk@Shell NiCuFe2O4@mSiO2 Mesoporous Nanocomposite Spheres for the Synthesis of Pyrimido‐Quinolines under Solvent‐Free Conditions

ChemistryOpen, 2023
Multi‐yolk@shell mesoporous silica spheres are becoming more and more attractive as high‐performance catalysts because of their high surface areas, variable pore sizes, and low densities. In this work, a NiCuFe2O4 magnetic core with a shell of mesoporous
Somayeh Kazempour, Prof. Dr. Hossein Naeimi   +1 more
doaj   +1 more source

Dynamic covalent chemistries of thermosetting polymer for recyclability and intelligent lubrication

Friction
Recently, the focus of materials research has shifted toward intelligent materials and structures with customizable properties and stimulus-responsive functions.
Qihua Wang, Nan Zhang, Xinrui Zhang, Liming Tao, Yaoming Zhang, Zenghui Yang, Tingmei Wang   +6 more
doaj   +1 more source