Water-borne and air-drying oil-based resins

Gündüz, Güngör
Khalid, AH
Mecidoglu, IA
Aras, L
New water-borne polyurethane resins were produced using maleinized monoglyceride (MMG), hydroxyl-terminated polybutadiene (HTPB), toluene di-isocyanate, and ethylene diamine (EDA). Maleinization was performed in order to insert hydrophilic groups in the fatty acid residues, which were then inserted to the backbone of polyurethane. The MMG was mixed with HTPB in different proportions, and the mixture was used as the polyol part of water-borne polyurethane resin. It was then reacted with toluene di-isocyanate, and the isocyanate end groups were blocked with methyl ethyl ketoxime (MEKO). The ratio of MMG to total polyol was changed between 40 and 70 mol%, while the [NCO]/[OH] ratio was kept at 1.5 in all samples. The carboxylic acid groups of MMG were then neutralized with triethyl amine. The formation of ionic groups imparts water dispersibility. Chain extension was performed by adding EDA and baking at 125 degreesC. Hardness, adhesion, impact resistance, bending, and abrasion resistance tests were applied to the specimens. The samples exhibited good physical and mechanical properties.


Preparation and Characterization of Polypropylene/Serpentine Composites
Tan, Semra; Tincer, İsmail Teoman (Wiley, 2011-07-15)
Composites of serpentine and polypropylene (PP) were prepared by twin-screw extrusion. Serpentine was collected as rocks from the Ankara-Beynam region and ground into powder with an average particle size of about 3 mu m for composite production. Both as-received (rock) and powdered serpentine were characterized. A silane coupling agent (SCA), gamma-aminopropyl triethoxy silane, was used for the surface treatment of serpentine. Mechanical properties of the composites were measured in terms of impact strength...
Structural, electrochemical and optical comparisons of tungsten oxide coatings derived from tungsten powder-based sols
Isik, Dilek; AK, METİN; Durucan, Caner (Elsevier BV, 2009-11-02)
Tungsten trioxide (WO3) electrochromic coatings have been formed on indium tin oxide-coated glass substrates by aqueous routes. Coating sols are obtained by dissolving tungsten powder in acetylated (APTA) or plain peroxotungstic acid (PTA) solutions. The structural evolution and electrochromic performance of the coatings as a function of calcination temperature (250 degrees C and 400 degrees C) have been reported. Differential scanning calorimetry and X-ray diffraction have shown that amorphous WO3 films ar...
Modification of glassy carbon electrode by the electrochemical oxidation of 3-aminophenylcalix[4]pyrrole in nonaqueous media
3-Aminophenylcalix[4]pyrrole (3APCP) was grafted to a glassy carbon (GC) surface during the electrochemical oxidation process in 0.1 M tetrabutylammoniumtetra-fluoroborate (TBATFB) containing acetonitrile solution. The presence of a surface film was confirmed electrochemically by comparing voltammograms of dopamine and ferricyanide redox probes at the bare and modified electrodes. Reflection-absorption infrared spectroscopy (RAIRS), XPS, atomic force microscopy (AFM), ellipsometry and the contact angle meas...
Green to highly transmissive switching multicolored electrochromes: Ferrocene pendant group effect on electrochromic properties
Ozdemir, Serife; BALAN, Abidin; BARAN, Derya; Doğan, Özdemir; Toppare, Levent Kamil (Elsevier BV, 2011-02-01)
Two new quinoxaline and ethylenedioxythiophene (EDOT) based polymers: poly(5,8-bis(2,3-dihydrothieno[3,4-b][1,4]dioxin-5-yl)-2-(phenyll)-3-ferrocenylquinoxaline) (P1) and poly(5,8-bis(2,3-dihydrothieno[3,4-b][1,4]dioxin-5-yl)-2,3-di(naphthalen-2-yl) quinoxaline) (P2) were synthesized and characterized in terms of their electrochemical and spectroelectrochemical properties. The polymers were both p and n-type dopable. The polymers can be switched between green and transparent states during p-doping/dedoping....
Compatibilization and characterization of blends of styrene-maleic anhydride copolymer with modified polyethylenes
Bayram, G; Yılmazer, Ülkü; Xanthos, M (Wiley, 2001-05-02)
Potentially reactive blends of styrene-maleic anhydride (SMAH) with ethylene/methyl acrylate/glycidyl methacrylate (E-MA-GMA) and nonreactive blends of SMAH with ethylene/methyl acrylate (E-MA) were produced in a Brabender batch mixer and in a corotating twin-screw extruder. The products were characterized in terms of rheology, morphology, and mechanical properties to understand the reaction characteristics between anhydride/epoxy functional groups. Storage modulus, G', loss modulus, G" and complex viscosit...
Citation Formats
G. Gündüz, A. Khalid, I. Mecidoglu, and L. Aras, “Water-borne and air-drying oil-based resins,” PROGRESS IN ORGANIC COATINGS, pp. 259–269, 2004, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/56770.