Buscar
Mostrando ítems 1-10 de 2854
Production and Characterization of the New Thermoplastic Polymer by Linseed Oil and Glycerol Following Green Chemistry Principles
(Brazilian Chemical Soc, 2017-01-01)
This paper presents the synthesis of polymer from biomass (linseed oil and glycerol) aiming at green chemistry, environmental sustainability with low cost. The polymer has thermoplastic characteristics. The thermal ...
Effect of stirring on photoinitiated polymerization
(1988)
The polymerization of methyl methacrylate photosensitized by benzion methyl ether over a wide range of initiator absorbances was investigated. Both the polymerization rate and the polymer molecular weight distribution are ...
The influence of the transition metal and the heteroatomic‐bridge on the action of metallocene/methyl aluminoxane catalysts in ethylene polymerization and on the properties of the polymer
(1995)
This work reports a comparative study of the catalytic behaviour for a series of metallocenes derived from Ti, Zr, Hf and Nb, which after activation with methylaluminoxane can polymerize ethylene. Results show that the Zr ...
Synthesis of polymeric organic-inorganic hybrid materials. Partially deacetylated chitin-silica hybrid
(Wiley-VCH Verlag, 1997)
This work reports the synthesis of a novel polymeric organic-inorganic hybrid. The inorganic component is a silica network obtained by controlled hydrolysis of tetraethyl orthosilicate via sol-gel process and the organic ...
Thermal degradation of chalcogenides containing poly(methacrylates)
(1990)
Thermogravimetric analysis of aromatic poly(methacrylates) containing heterocyclic side chains were carried out. The effect of the substituent introduced into the side chain on the thermal stability of the polymer was ...
AIE Effect by Oxygen Clustering in Vegetable Oil-Based Polymers
(2021-08-20)
Vegetable oil has been widely used to synthesize monomers and polymers in different fields. Some authors have found different polymers in maleinized vegetable oil; however, they have not described the luminescent properties ...
Dispersed lipid liquid crystalline phases stabilized by a hydrophobically modified cellulose
(2007-02-27)
Aqueous dispersions of monoolein (MO) with a commercial hydrophobically modified ethyl hydroxyethyl cellulose ether (HMEHEC) have been investigated with respect to the morphologies of the liquid crystalline nanoparticles. ...
Dispersed lipid liquid crystalline phases stabilized by a hydrophobically modified cellulose
(2007-02-27)
Aqueous dispersions of monoolein (MO) with a commercial hydrophobically modified ethyl hydroxyethyl cellulose ether (HMEHEC) have been investigated with respect to the morphologies of the liquid crystalline nanoparticles. ...
Binding of electrolytes to poly(ethylene oxide) in methanol
(1986)
The binding of potassium and sodium salts (thiocyanate and iodide as anions) to polyethylene
oxide) in methanol solutions has been studied. The study was performed by the use of fluorescence techniques
and ultrafiltration ...