The suppression of strain induced crystallization in PET through sub micron TiO2 particle incorporation

Taniguchi, Atsushi; Çakmak, Mükerrem

doi:10.1016/j.polymer.2004.06.056

Cited by 69 publications

(72 citation statements)

References 21 publications

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“…We hypothesize that the presence of graphene acts to reinforce the stress-induced crystallites leading them to fail later than would otherwise be the case. This has been previously reported in the literature and attributed to the presence of graphene which inhibits the strain induced crystallization [9,50]. This is consistent with the observed increase in strain at break ( Figure 3C).…”

Section: Resultssupporting

confidence: 92%

Reinforcement in melt-processed polymer–graphene composites at extremely low graphene loading level

Istrate

Paton

Khan

et al. 2014

Carbon

140

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We have prepared polymer nanocomposites reinforced with exfoliated graphene layers solely via melt blending. For this study polyethylene terephthalate (PET) was chosen as the polymer matrix due to its myriad of current and potential applications. PET and PET/graphene nanocomposites were melt compounded on an internal mixer and the resulting materials were compression molded into films. Transmission electron microscopy and scanning electron microscopy revealed that the graphene flakes were randomly orientated and well dispersed inside the polymer matrix. The PET/graphene nanocomposites were found to be characterized by superior mechanical properties as opposed to the neat PET. Thus, at a nanofiller load as low as 0.07 wt%, the novel materials presented an increase in the elastic modulus higher than 10% and an enhancement in the tensile strength of more than 40% compared to pristine PET.The improvements in the tensile strength were directly correlated to changes in elongation at break and indirectly correlated to the fracture initiation area. The enhancements observed in the mechanical properties of polymer/graphene nanocomposites achieved at low exfoliated graphene loadings and manufactured exclusively via melt mixing may open the door to industrial manufacturing of economical novel materials with superior stiffness, strength and ductility.3

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Section: Resultssupporting

confidence: 92%

Reinforcement in melt-processed polymer–graphene composites at extremely low graphene loading level

Istrate

Paton

Khan

et al. 2014

Carbon

140

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“…Nevertheless, that does not agree with the results obtained with the amide wax. Taniguchi and Cakmak [22] described that the addition of TiO 2 nanoparticles could play the role of antinucleating agents during deformation from the amorphous precursors, by preventing the formation of the crystalline nodes that eventually develop into threedimensional network structures. They described that this phenomenon can be attributed to the disruption of strain induced crystallization process in the presence of particles that have poor surface interaction with the polymer at the rubbery temperature range.…”

Section: Avrami Methodsmentioning

confidence: 99%

Effect of different dispersing agents in the non-isothermal kinetics and thermomechanical behavior of PET/TiO₂ composites

Cayuela

Cot

Algaba

et al. 2016

Journal of Macromolecular Science, Part A

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This work is based on the analysis of the influence of dispersing agents on the non-isothermal kinetics, thermomechanical behaviour and dispersing action of PET/TiO 2 nanocomposites. The influence of two montanic waxes and an amide wax used as dispersing agents in the nucleating effect of the nanoparticles is studied. The dispersing agents are the following: a) a partly saponified ester of montanic acids (PSEMA), b) an ester of montanic acids with multifunctional alcohols (MAWMA) and c) an amide wax based on N,N'-Bisstearoyl ethylenediamine (AW). The non-isothermal kinetics based on the Avrami method revealed that MAWMA and PSEMA favours the nucleating effect of the nanoparticles when are included in PET. Birefringence microscopy points out the good dispersing capacity of MAWMA and AW and the termomechanical analysis confirmed that the ester of montanic acids with multifunctional alcohols MAWMA shows the best dispersing properties and best promotes the nucleating effect of the TiO 2 nanoparticles when used for PET/TiO 2 nanocomposites production.

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“…Taniguchi and Cakmak [23] described that the addition of TiO 2 nanoparticles could play the role of antinucleating agents during deformation from the amorphous precursors, by preventing the formation of the crystalline nodes that eventually develop into threedimensional network structures. They described that this phenomenon can be attributed to the disruption of strain induced crystallization process in the presence of particles that have poor surface interaction with the polymer at the rubbery temperature range.…”

Section: Crystallizationmentioning

confidence: 99%

Effect of the Presence of an Ester of Montanic Acids With Multifunctional Alcohols in the Composites of Titanium Dioxide Nanoparticles With Poly (Ethylene Terephthalate) in Their Non-Isothermal Crystallization

Manich¹,

Cot²,

Algaba³

et al. 2015

Journal of Macromolecular Science, Part A

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The effect of the addition of an ester of montanic acid with multifunctional alcohols in the effectiveness of the dispersion and compatibility of TiO 2 nanoparticles when included as filler in poly(ethyleneterephthalate) for composite production is studied through the study of the non-isothermal crystallization behaviour by differential scanning calorimetry (DSC). The application of the Avrami method enables to evaluate the compatibility and the level of dispersion/aggregation of the nanofiller in the poly (ethyleneterephthalate) by the analysis of the temperature and enthalpy of crystallization, the kinetic parameters and the half-crystallization time.

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The suppression of strain induced crystallization in PET through sub micron TiO2 particle incorporation

Cited by 69 publications

References 21 publications

Reinforcement in melt-processed polymer–graphene composites at extremely low graphene loading level

Reinforcement in melt-processed polymer–graphene composites at extremely low graphene loading level

Effect of different dispersing agents in the non-isothermal kinetics and thermomechanical behavior of PET/TiO₂ composites

Effect of the Presence of an Ester of Montanic Acids With Multifunctional Alcohols in the Composites of Titanium Dioxide Nanoparticles With Poly (Ethylene Terephthalate) in Their Non-Isothermal Crystallization

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The suppression of strain induced crystallization in PET through sub micron TiO2 particle incorporation

Cited by 69 publications

References 21 publications

Reinforcement in melt-processed polymer–graphene composites at extremely low graphene loading level

Reinforcement in melt-processed polymer–graphene composites at extremely low graphene loading level

Effect of different dispersing agents in the non-isothermal kinetics and thermomechanical behavior of PET/TiO2 composites

Effect of the Presence of an Ester of Montanic Acids With Multifunctional Alcohols in the Composites of Titanium Dioxide Nanoparticles With Poly (Ethylene Terephthalate) in Their Non-Isothermal Crystallization

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Effect of different dispersing agents in the non-isothermal kinetics and thermomechanical behavior of PET/TiO₂ composites