Synthesis and characterization of new poly(ethylene terephthalate)/poly(phenylene oxide) blends

Paszkiewicz, Sandra; Irska, Izabela; Piesowicz, Elżbieta; Pilawka, R.; Pawelec, I.; Szymczyk, Anna; Gorący, K.; Wielgosz, Zbigniew; Rosłaniec, Z.

doi:10.14314/polimery.2017.093

Cited by 2 publications

(2 citation statements)

References 4 publications

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“…The tendency to form heterogeneous structure depends on polymer-polymer miscibility and can be predicted according to their solubility parameters. Numerous studies have confirmed the validity of Hoy approach in determining miscibility between two polymers [47][48][49]. A similar comprehensive approach has been proposed by Hoftyzer and Van Krevelen [50].…”

Section: Theoretical Investigation On Miscibility Ofmentioning

confidence: 83%

Poly(butylene terephthalate)/polylactic acid based copolyesters and blends: miscibility-structure-property relationship

Irska¹,

Paszkiewicz²,

Gorący³

et al. 2020

Express Polym. Lett.

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A series of aliphatic-aromatic copolyesters based on poly(butylene terephthalate) (PBT) and poly(lactic acid) (PLA) have been synthesized by means of a novel reactive blending procedure coupled with polycondensation in melt. The obtained copolymers were further compared with PBT and PLA homopolymers and PBT/PLA non-compatibilized physical blends in order to investigate the effect of transesterification reactions on the structural, morphological, thermal and mechanical performance. Properties of the obtained materials have been found strictly dependent on the preparation process and blend/copolymer composition. The PBT/PLA physical blends appeared as highly crystalline, phase separated systems that exhibit brittle behavior. On the other hand, the applied method of reactive blending enhanced interfacial adhesion and promoted the arrangement of PBT and PLA in blocks of different lengths. Although the PBT-b-PLA copolyesters were found to be miscible in amorphous phase, the phase separation that has arisen from PBT crystalline domains occurs. Along with an increase in PLA weight fraction in copolymers, the length of aromatic sequences decreased which in turn resulted in shifting the values of melting temperatures (T m) toward lower ones and decreased the degree of crystallinity (x c). Moreover, PBT-b-PLA copolymer with 30 wt% of PLA units has been demonstrated as a promising thermoplastic shape memory polymer (SMP) with a switching temperature of 35°C.

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Section: Theoretical Investigation On Miscibility Ofmentioning

confidence: 83%

Poly(butylene terephthalate)/polylactic acid based copolyesters and blends: miscibility-structure-property relationship

Irska¹,

Paszkiewicz²,

Gorący³

et al. 2020

Express Polym. Lett.

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show abstract

“…The DSC was used to determine the glass transition temperature T g DSC [49,[57][58][59][60][61][62][63][64]. One sample per each heat treatment temperature was tested on Differential Scanning Calorimeter Netzsch Phoenix 204 F1 apparatus, in accordance with ISO 11357 standard [65].…”

Section: Differential Scanning Calorimetrymentioning

confidence: 99%

The effect of the heat treatment on the crosslinking of epoxy resin for aviation applications

Mucha¹,

Sterzyński

Krzyżak³

2020

Polimery

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We have investigated the MGS L285 epoxy laminating resin system, used in aviation applications. A number of tests were carried out, namely Dynamic Mechanical Analysis (DMA), Differential Scanning Calorimetry (DSC), tensile testing, three-point bending flexural testing, Charpy impact testing, Shore D hardness, density measurements and Fourier-Transform Infrared spectroscopy (FT-IR). Moreover, the tensile toughness U TT , the brittleness B and the linear isobaric thermal expansivity α L were calculated. The samples were subjected to heat treatment in the temperatures of 50, 60 and 80°C for 15 hours or were stored in room temperature. Glass transition temperature, hardness, density as well as other properties were observed to rise along with the increasing heat treatment temperature, suggesting the validity of applications of Voronoi-Delaunay structural analysis to polymer science. On the other hand, properties such as brittleness, toughness and impact strength exhibited a non-linear course of changes as a function of the heating temperature.

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Synthesis and characterization of new poly(ethylene terephthalate)/poly(phenylene oxide) blends

Cited by 2 publications

References 4 publications

Poly(butylene terephthalate)/polylactic acid based copolyesters and blends: miscibility-structure-property relationship

Poly(butylene terephthalate)/polylactic acid based copolyesters and blends: miscibility-structure-property relationship

The effect of the heat treatment on the crosslinking of epoxy resin for aviation applications

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