Results 41 to 50 of about 1,726,931 (142)

Ionic Conjugated Microporous Polymers for Cycloaddition of Carbon Dioxide to Epoxides

Macromolecular Materials and Engineering
Along the development of ionic porous organic polymers, simple and efficient synthetic methods are actively pursued. Herein, the Debus–Radziszewski reaction is applied to synthesize ionic conjugated microporous polymers (iCMPs) in one step.
Xiang Lin, Zhengjun Guo, Yongneng Wu, Jiayin Yuan, Yaozu Liao, Weiyi Zhang   +5 more
doaj   +1 more source

Optimization of components in development of polymeric coatings for restoration of transport vehicles

Қарағанды университетінің хабаршысы. Математика сериясы, 2018
It is proved, that for improving the performance characteristics of vehicle parts, including their corrosion resistance and wear resistance, it is advisable to use protective polymeric composite coatings.
А.V. Buketov, M.V. Brailo, D.P. Stukhlyak, S.V. Yakushchenko, О.О. Sapronov, V.V. Cherniavskyi, V.M. Husiev, D.А. Dmitriev, V.M. Yatsyuk, О.М. Bezbakh, R.Yu. Negrutsa   +10 more
doaj   +1 more source

Apolar Annonaceous Acetogenins from the Fruit Pulp of Annona muricata

Molecules, 2009
A methylene chloride extract of the pulp of Annona muricata L. was fractionated in search for scarcely functionalized Annonaceous acetogenins (type E).
Pierre Champy, Djibril Fall, Alice Melot, Christophe Gleye   +3 more
doaj   +1 more source

Benzoquinonas, hidroquinonas e sesquiterpenos de Auxemma glazioviana Benzoquinones, hydroquinones and sesquiterpenes of Auxemma glazioviana

Química Nova, 2005
Two new compounds, 5 and 8, and an epimeric mixture 4a/4b were isolated from hardwood of Auxemma glazioviana. Their structures and relative configurations were determined by modern spectroscopic analysis to be rel-10alpha,11alpha-epoxy-11beta-ethoxy ...
Jose Galberto M. Costa, Otília Deusdênia L. Pessoa, Francisco José Q. Monte, Eveline A. Menezes, Telma Leda G. Lemos, Raimundo Braz-Filho   +5 more
doaj   +1 more source

Mechanically robust, hydrothermal aging resistant, imine-containing epoxy thermoset for recyclable carbon fiber reinforced composites

Materials & Design, 2022
Imine compounds have been proved to possess great potential in the design and preparation of sustainable epoxy thermosets. However, it is still a great challenge to develop imine-containing hardener with definite structure due to the randomness of ...
Yingying Liu, Fei Lu, Ningdi Xu, Baolong Wang, Lei Yang, Yudong Huang, Zhen Hu   +6 more
doaj   +1 more source

Bimetallic synergy in supported Ni–Pd catalyst for selective hydrogenolysis of C–O bonds in epoxy resins

Nature Communications
Recycling of epoxy composites is of importance for achieving circular economy as demand for lightweight materials in the field of sustainable technologies is soaring.
Yanze Huang, Yukari Yamazaki, Katsutoshi Nomoto, Hiroki Miura, Tetsuya Shishido, Xiongjie Jin, Kyoko Nozaki   +6 more
doaj   +1 more source

Cytotoxic Dammarane-Type Triterpenoids from Aglaia cucullata Peel Fruit

Indonesian Journal of Chemistry
Four triterpenoids, known as dammarane-type, dammaradienone (1), 20(S),25-epoxy-5α-dammar-20-en-3-one (2), 20(S)-5α-dammar-24-en-3α,20-diol-3-acetate (3) and 3α-acetyl-20S,24S-epoxy-25-hydroxydammarane (4), were isolated from Aglaia cucullata peel fruit.
Intan Hawina Anjari, Desi Harneti, Kindi Farabi, Al Arofatus Naini, Ace Tatang Hidayat, Risyandi Anwar, Hadi Kuncoro, Mohamad Nurul Azmi, Unang Supratman   +8 more
doaj   +1 more source

Naturally occurring epoxy acids: i. detection and evaluation of epoxy fatty acids by paper, thin-layer, and gas-liquid chromatography*†

Journal of Lipid Research, 1961
Chromatographic procedures for the detection and evaluation of oxygenated fatty acids are described. Emphasis has been placed on epoxy acids, but these methods promise to be of great value in studies of all classes of oxygenated acids.
Lindsay J. Morris, Ralph T. Holman, Krister Fontell   +2 more
doaj   +1 more source

Temperature dependence of the interfacial shear strength in glass-fibre epoxy composites [PDF]

, 2014
The present work focuses on further investigation of the hypothesis that a significant fraction of apparent interfacial shear strength (IFSS) in fibre-reinforced composites can be attributed to a combination of residual radial compressive stress and ...
Thomason, James, Yang, Liu
core   +1 more source

Re-agglomeration of carbon nanotubes in two-part epoxy system; influence of the concentration [PDF]

, 2007
Carbon nanotubes, because of their exceptional mechanical properties, are one of the potential reinforcements for polymers in near future. Before substituting these nanocomposites in commercial applications, there are many problems, like dispersion ...
Inam, Fawad, Peijs, Ton
core