Graphene/polyethylene terephthalate nanocomposites with enhanced mechanical and thermal properties

Shabafrooz, Vahid; Bandla, Sudheer; Allahkarami, Masoud; Hanan, Jay C.

doi:10.1007/s10965-018-1621-4

Cited by 36 publications

(37 citation statements)

References 63 publications

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Section: Morphological Analysissupporting

confidence: 86%

“…% CATAS) the failure behavior changes, becoming partially brittle. This observation is consistent with the increasing content of amorphous fraction at higher concentrations: this fraction can act to prematurely fracture the composite, reducing the stiffness of the composite, due to CATAS role as stress concentration sites, facilitating crack initiation [34]. Semi-crystalline PET typically shows characteristic crystalline XRD peaks at 2θ = 17.3, 21.7, 22.8, 26.1 and 32.5°, corresponding to the (010), (111), (110), (100), (021), (002) and (101) crystal planes [32].…”

Section: Morphological Analysissupporting

confidence: 85%

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Thermomechanical and Morphological Properties of Poly(ethylene terephthalate)/Anhydrous Calcium Terephthalate Nanocomposites

et al. 2020

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Calcium terephthalate anhydrous salts (CATAS), synthetized by reaction of terephthalic acid with metal (Ca) oxide were incorporated at different weight contents (0–30 wt. %) in recycled Poly(ethylene terephthalate) (rPET) by melt processing. Their structure, morphology, thermal and mechanical properties (tensile and flexural behavior) were investigated. Results of tensile strength of the different formulations showed that when the CATAS content increased from 0.1 to 0.4 wt. %, tangible changes were observed (variation of tensile strength from 65.5 to 69.4 MPa, increasing value for E from 2887 up to 3131 MPa, respectively for neat rPET and rPET_0.4CATAS). A threshold weight amount (0.4 wt. %) of CATAS was also found, by formation at low loading, of a rigid amorphous fraction at the rPET/CATAS interface, due to the aromatic interactions (π−π conjugation) between the matrix and the filler. Above the threshold, a restriction of rPET/CATAS molecular chains mobility was detected, due to the formation of hybrid mechanical percolation networks. Additionally, enhanced thermal stability of CATAS filled rPET was registered at high content (Tmax shift from 426 to 441 °C, respectively, for rPET and rPET_30CATAS), essentially due to chemical compatibility between terephthalate salts and polymer molecules, rich in stable aromatic rings. The singularity of a cold crystallization event, identified at the same loading level, confirmed the presence of an equilibrium state between nucleation and blocking effect of amorphous phase, basically related to the characteristic common terephthalate structure of synthetized Ca–Metal Organic Framework and the rPET matrix.

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Section: Morphological Analysissupporting

confidence: 86%

Section: Morphological Analysissupporting

confidence: 85%

Thermomechanical and Morphological Properties of Poly(ethylene terephthalate)/Anhydrous Calcium Terephthalate Nanocomposites

et al. 2020

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“…ω is the weight fraction of PET in the composites, ΔH f is the heat of fusion, ΔH cc is the cold crystallization enthalpy, and ΔH 100 is the heat of fusion of 100% crystalline pure PET and PBT which was taken as between 140 and 145 J/g, 17,20 respectively. Tensile strength (stress at yield) and strain at break values of nanocomposites were measured at ambient conditions by using computer-controlled Instron universal testing machine according to ISO 527 standard.…”

Section: Characterizationmentioning

confidence: 99%

“…On the other hand, the processability of PET is difficult because of its slow crystallization and low melt strength. [19][20][21] Unlike PET, PBT has rapid crystallization and good moldability properties. In addition, its solvent resistance, dimensional stability makes it attractive for automotive, electronic applications.…”

Section: Introductionmentioning

confidence: 99%

“…There is the limited number of study about reinforcing of PET/PBT blend various fillers such as silica, 18 clay, 27 carbon nanotube, 26 carbon black. 30 Also, there are several studies in which graphene derivatives are added to PET 19,20,[31][32][33] and PBT [34][35][36] separately. To the best of our knowledge, Gr reinforced PET/PBT composite has not been studied.…”

Section: Introductionmentioning

confidence: 99%

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Reduced graphene oxide reinforced PET/PBT nanocomposites: Compatibilization and characterization

Durmaz

Öztürk

Aytaç

2020

Polymer Engineering & Sci

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This research work focused on the effects of different compatibilizers on the properties of reduced graphene oxide (rGO) reinforced poly(ethylene terephthalate) (PET)/poly(butylene terephthalate) (PBT) nanocomposites. The samples were prepared via melt compounding and injection molding methods. The Joncryl and glycidyl isooctyl polyhedral oligomeric silsesquioxane (GPOSS) were used as compatibilizers at different loading levels (0.5%-4%). The structural, thermal, mechanical, morphological, and electrical properties of the nanocomposites were investigated. The Fourier transform infrared analysis results revealed that no significant interaction was observed when GPOSS was added. On the other hand, there were more obvious changes in the peaks of the nanocomposite containing Joncryl. The thermal results showed that the compatibilizer addition caused small changes while rGO addition did not considerably affect the thermal stability of blend. The glass transition temperature of the nanocomposite significantly decreased with the addition of GPOSS. The tensile test indicated that compatibilizers improved the mechanical performance of PET/PBT/rGO nanocomposite.

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Biobased Materials

Salleh

Zulkifli

Mazlan

et al. 2022

Handbook of Bioplastics and Biocomposites Engineering Applications

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Graphene/polyethylene terephthalate nanocomposites with enhanced mechanical and thermal properties

Cited by 36 publications

References 63 publications

Thermomechanical and Morphological Properties of Poly(ethylene terephthalate)/Anhydrous Calcium Terephthalate Nanocomposites

Thermomechanical and Morphological Properties of Poly(ethylene terephthalate)/Anhydrous Calcium Terephthalate Nanocomposites

Reduced graphene oxide reinforced PET/PBT nanocomposites: Compatibilization and characterization

Biobased Materials

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