Reactive extrusion of styrene maleic anhydride copolymer and polyol blends

Bayram, G
Yılmazer, Ülkü
Xanthos, M
The reaction of styrene-maleic anhydride with a low molecular weight polytetramethylene ether glycol was studied in an intensive batch mixer and in a corotating twin screw extruder. The reaction mixtures were later compression molded in the form of films. The films analyzed by FTIR spectroscopy showed the presence of both carboxylic acid and ester groups. Physical and mechanical properties of the materials were evaluated at different reactive processing conditions. The glass transition temperature of the mixed products and the tensile modulus of the prepared films decreased with increasing PTMEG concentration due to the plasticization effect of the polyol.


Anhydride/epoxy functionalized blends: Mechanical, rheological and thermal properties
Bayram, G; Yılmazer, Ülkü (2001-11-30)
Blends of styrene-maleic anhydride (SMAH) and polyethylene-methyl acrylate-glycidyl methacrylate (E-MA-GMA) were produced in a batch mixer and in a corotating twin screw extruder. E-MA-GMA concentration was varied from 0% to 50%. Batch mixing indicated that the blend system was reactive. Extruded blends were characterized in terms of rheological, thermal and mechanical properties, and their morphology was observed. Rheological properties such as the storage modulus, loss modulus and complex viscosity exhibi...
Reactive processing of styrene-maleic anhydride and epoxy functionalized polymer blends
Bayram, G; Yılmazer, Ülkü; Xanthos, M (1999-05-06)
The reaction of styrene-maleic anhydride (SMA) with polyethylene/methyl acrylate/glycidyl methacrylate (E-MA-GMA) was studied in a batch mixer and in a corotating twin screw extruder. Also, the mixing of a nonreactive blend of SMA with polyethylene/methyl acrylate (E-MA), with similar rheological properties to E-MAG-MA, was studied under the same processing conditions. The mixing products of reactive and nonreactive systems exhibited drastically different properties. Reactive blends showed higher tensile mo...
Flame retardancy of polyamide compounds and micro/nano composites
Gündüz, Hüseyin Özgür; Kaynak, Cevdet; Department of Polymer Science and Technology (2009)
In the first part of this dissertation, glass fiber reinforced/unreinforced polyamide 6 (PA6) and polyamide 66 (PA66) were compounded with three different flame retardants, which were melamine cyanurate, red phosphorus and brominated epoxy with antimony trioxide, by using an industrial scale twin screw extruder. Then, to investigate flame retardancy of these specimens, UL-94, Limiting Oxygen Index (LOI) and Mass Loss Cone Calorimeter (MLC) tests were carried out. In addition to flammability tests, thermogra...
Electrochemical synthesis of crowned conducting polymers : nature of radical cations in polymerization and mechanism of conductivity
Cihaner, Atilla; Önal, Ahmet Muhtar; Department of Chemistry (2004)
Poly(dibenzo-18-crown-6) (Poly(DB18C6)) was synthesized by electrochemical oxidation of dibenzo-18-crown-6 (DB18C6) using a mixture of acetonitrile and dichloromethane as solvent and tetrabutylammonium tetrafluoroborate (TBABF4) or tetrabutylammonium hexafluorophosphate (TBAPF6) as supporting electrolyte. The anodic polymerization of DB18C6 was investigated using in-situ ESR and in-situ UV-VIS spectroscopic techniques. Spectroelectrochemical (SPEL) properties and thermal analysis of the resulting polymers h...
Electrochemical polymerization and characterization of polyether-substituted aniline derivatives
Tirkeş, Süha; Oenal, Ahmet M. (Wiley, 2007-08-01)
New compounds consisting of aniline units linked by polyether bridges have been synthesized and their electrochemical polymerization was performed via constant potential electrolysis and cyclic voltammetry in an aqueous solution containing 3.0 moI L-1 H2SO4. Chemical polymerization was carried out using (NH4)(2)S2O8 as oxidizing agent. It was found that both methods gave the same polymer product without any cleavage of the polyether bridge between aniline rings. The polymers were characterized using the Fou...
Citation Formats
G. Bayram, Ü. Yılmazer, and M. Xanthos, “Reactive extrusion of styrene maleic anhydride copolymer and polyol blends,” 1998, vol. 44, Accessed: 00, 2020. [Online]. Available: