Evaluation of Polyester Resin as a New Compatibilizer for SBR/PVC Blends

Abstract

permittivité (ε permittivité ( ') augmentaient avec la teneur en polyester. Cette augmentation est suivie d'une diminution de ε" jusqu'à une teneur de polyester de 7,5 phr, après quoi aucun changement n'est remarqué.

Alkyd resins based on hyperbranched polyesters and PET waste for coating applications

“…In continuation of our study on either chemical recycling of PET [3][4][5]9,14] or preparation of hyperbranched polyesters [31,[35][36][37][38], the present study deals with the combination of these two research areas. Different alkyd resins based on glycolyzed PET together with hyperbranched polyesters and different vegetable oil fatty acids, that appear to have potential applications in coating industry, have been studied with respect to methods of preparation, their properties, advantages over conventional counterparts and applications.…”

“…Glycolysis, hydrolysis, methanolysis, aminolysis and ammonolysis are the most recycling strategies for this material [3][4][5][6][7][8]. Production of specialized products such as saturated and unsaturated polyester resins, polyurethanes, coating materials and additives, using PET waste, has been investigated [9][10][11][12][13][14][15][16][17].…”

Polyvinyl chloride/ styrene butadiene rubber polymeric blend filled with bismuth subcarbonate (BiO)2CO3as a shielding material for gamma rays

“…Figures show the frequency dependence of dielectric constant Ɛ ′, dielectric loss Ɛ ″ and AC conductivity of different (BiO) 2 CO 3 concentration. Figure shows a decrease in the dielectric constant Ɛ ′ with increasing in the (BiO) 2 CO 3 concentration, this may be due to lower dielectric constant of bismuth subcarbonate than the polymer blend (PVC/SBR) . It is clearly noticed that in almost all the samples, there is a slight decrease in the dielectric constant Ɛ ′ in the low frequency region and then almost remains constant which may be attributed to the fact that dipolar polarization of the matrix and the interfacial polarization (due to the fillers and polymer matrix) become less capable to orient themselves in the direction of the alternating field as the frequency raised .…”

Polyester resin as a compatibilizing agent for some polymeric blends

“…The effect of polyester resins as compatibilizing agents on the degree of compatibility of many types of polymers has been studied. 7,8 A variety of experimental methods have been used to study the blend compatibility. These methods include viscometric measurements, 9 dynamic mechanical analysis, electron microscopy, differential scanning calorimetry (DSC), [10][11][12] infrared (IR) spectroscopy, dielectric permittivity, 13,14 and ultrasonic measurements.…”