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Development of waterborne epoxy-based resin incorporated with modified natural rubber latex for coating application.
Sci Rep
November 2024
Department of Chemistry, Faculty of Science, Mahidol University, Rama VI Road, Payathai, Bangkok, 10400, Thailand.
Water-based coating has gained much attention globally due to environmental issues. This work aims to develop a waterborne epoxy coating incorporated with modified natural rubber (NR) latex for improved performance. For this purpose, the NR latex was modified into three types of low molecular weight epoxidized natural rubber (LENR) latex.
View Article and Find Full Text PDFAmidation of carboxy groups in TEMPO-oxidized cellulose for improving surface hydrophobization and thermal stability of TEMPO-CNCs.
Carbohydr Polym
January 2025
Department of Biomaterial Sciences, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, 113-8657 Tokyo, Japan. Electronic address:
Article Synopsis
- - This study focuses on modifying cellulose nanomaterials (CNs) to make them more hydrophobic and thermally stable, which is important for creating strong and transparent epoxy nanocomposites.
- - Researchers explored amidation, a chemical process that alters carboxy groups on fibrous wood pulp, achieving high amidation rates of 88% and 91% and improving efficiency for industrial use.
- - After amidation, the thermal degradation point of the wood pulp increased significantly from 224°C to over 250°C, and the modified pulp was processed into transparent dispersions for further applications.
Sustainable Composites from Waste Polypropylene Added with Thermoset Composite Waste or Recovered Carbon Fibres.
Polymers (Basel)
October 2024
Dipartimento di Ingegneria, Università degli Studi di Palermo, Viale delle Scienze, ed. 6, 90128 Palermo, Italy.
In order to limit the ever-increasing consumption of new resources for material formulations, regulations and legislation require us to move from a linear to a circular economy and to find efficient ways to recycle, reuse and recover materials. Taking into account the principles of material circularity and waste reuse, this research study aims to produce thermoplastic composites using two types of industrial waste from neighbouring companies, namely waste polypropylene (wPP) from household production and carbon-fibre-reinforced epoxy composite scrap from a pultrusion company. The industrial scrap of the carbon-fibre-reinforced epoxy composites was either machined/ground to powder (pCFRC) and used directly as a reinforcement agent or subjected to a chemical digestion process to recover the carbon fibres (rCFs).
View Article and Find Full Text PDFMolecular dynamics investigation of IEPOX chemical behavior at the interface and in the bulk phase of acidic aerosols.
Chemosphere
November 2024
School of Environmental Engineering, Henan University of Technology, Zhengzhou, Henan, 450001, China.
Isoprene epoxydiol (IEPOX) is an important reactive gas-phase intermediate produced by the photooxidation of isoprene under low NO conditions, playing a key role in the formation of secondary organic aerosols (SOA). Previous studies have mostly focused on the liquid-phase reactions of IEPOX within aerosols; however, interfacial heterogeneous chemical reactions are equally important in SOA formation. This study systematically explores the reaction mechanisms of IEPOX at the acidic aerosol interface and in the bulk phase using classical molecular dynamics (MD) and ab initio molecular dynamics simulations (AIMD).
View Article and Find Full Text PDFSynthesis, Structure, and Actual Applications of Double Metal Cyanide Catalysts.
Int J Mol Sci
October 2024
A.V. Topchiev Institute of Petrochemical Synthesis RAS, 29 Leninsky Pr., 119991 Moscow, Russia.
Article Synopsis
- * A renewed focus on DMC complexes has arisen due to their effectiveness in the copolymerization of oxirane and CO2, addressing the challenge of fixing atmospheric carbon dioxide.
- * The review covers the synthesis, structure, and mechanisms of action of DMC complexes, highlighting recent advancements and their potential applications in creating new materials and fine chemicals.
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