scholarly journals From Polyethylene to Highly Graphitic and Magnetic Carbon Spheres Nanocomposites: Carbonization under Pressure

Nanomaterials ◽  
2019 ◽  
Vol 9 (4) ◽  
pp. 606 ◽  
Author(s):  
Jesica Castelo-Quibén ◽  
Luisa M. Pastrana-Martínez ◽  
Francisco Carrasco-Marín ◽  
Agustín F. Pérez-Cadenas
Keyword(s):  
Magnetic Properties ◽  
Oxidation Resistance ◽  
Solvent Free ◽  
Low Density Polyethylene ◽  
Low Density ◽  
Carbon Spheres ◽  
Carbon Nanocomposites ◽  
Solvent Free Conditions ◽  
One Step ◽  
Magnetic Carbon

Carbon nanocomposites microspheres were synthesized from Low-Density Polyethylene (LDPE) by a facile one-step strategy under solvent-free conditions. The synthesis of these materials was carried out in a closed Hastelloy® reactor at 700 °C. The treatment, during which autogenic pressure was generated, leads to highly graphitic materials with stunning properties, particularly concerning the oxidation resistance (compared to the graphite stability). The metallic doping triggers the growth of nanostructures with diverse morphologies around the spheres, obtaining samples with magnetic properties.

Calcium mediated efficient synthesis of N-arylamidines from organic nitriles and amines

2020 ◽  
Vol 18 (22) ◽  
pp. 4231-4237
Author(s):  
Indrani Banerjee ◽  
Shweta Sagar ◽  
Tarun K. Panda
Keyword(s):  
Solvent Free ◽  
Efficient Synthesis ◽  
Facile Synthesis ◽  
Solvent Free Conditions ◽  
One Step

An efficient one-step methodology for the facile synthesis of N-arylamidines from organic nitriles and amines by using calcium bis(hexamethyldisilazide) as a competent catalyst under solvent-free conditions is reported.

ChemInform Abstract: A Regiospecific Three-Component One-Step Cyclocondensation to 6-Cyano-5,8-dihydropyrido[2,3-d]pyrimidin-4(3H)-ones Using Microwaves under Solvent-Free Conditions.

ChemInform ◽  
2010 ◽  
Vol 33 (5) ◽  
pp. no-no
Author(s):  
Jairo Quiroga ◽  
Carlos Cisneros ◽  
Braulio Insuasty ◽  
Rodrigo Abonia ◽  
Manuel Nogueras ◽  
...  
Keyword(s):  
Solvent Free ◽  
Solvent Free Conditions ◽  
One Step

An Efficient One-Step Hantzsch Multicomponent Synthesis of 1,4- Dihydropyridines Via a Wells-Dawson Heteropolyacid Catalyst Under Solvent-Free Conditions

2010 ◽  
Vol 7 (7) ◽  
pp. 511-518 ◽  
Author(s):  
Angel G. Sathicq ◽  
Gustavo P. Romanelli ◽  
Agustin Ponzinibbio ◽  
Graciela T. Baronetti ◽  
Horacio J. Thomas
Keyword(s):  
Solvent Free ◽  
Multicomponent Synthesis ◽  
Heteropolyacid Catalyst ◽  
Solvent Free Conditions ◽  
One Step

Surface Modification of Low-Density Polyethylene Films via Photografting Polymerization Technique

2006 ◽  
Vol 11-12 ◽  
pp. 437-440 ◽  
Author(s):  
Wei Ning ◽  
Jian Ping Deng ◽  
Wan Tai Yang
Keyword(s):  
Surface Modification ◽  
Low Density Polyethylene ◽  
Low Density ◽  
Xps Analysis ◽  
Step Method ◽  
Grafting Polymerization ◽  
Polyethylene Films ◽  
Ldpe Film ◽  
One Step

Surface modification of low-density polyethylene (LDPE) films was carried out via a novel photografting polymerization technique with acrylamide (AAm) as the monomer. The photografting polymerization can be achieved via one-step method and two-step method. The photografting polymerization reactivity of AAm was examined with benzophenone (BP) as the photoinitiator and low-density polyethylene (LDPE) film as the substrate with “sandwich” assembly. Moreover, the occurrence and evolution of grafting polymerization of AAm on the substrate was demonstrated XPS analysis and SEM pictures.

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