Thermomechanical Assessment of Plastic Deformation in Model Amorphous Polyamide/Clay Nanocomposites

Tulsyan, Kunal; Toshniwal, Saurabh; Dorairaju, Gowri; Schmidt, Daniel F.; Reynaud, Emmanuelle

doi:10.1155/2010/679786

Cited by 6 publications

(2 citation statements)

References 27 publications

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“…The cyclo-olefin polymer (COP) Zeonor® 1020R from Zeon Chemicals L.P. and the co-polyamide (CoPA) Grilamid® TR 90 from EMS-CHEMIE AG were used to produce melt-spun filaments. The chemical structures of these two polymers as reported in the literature are shown in Figure 1 [25][26][27].…”

Section: Methodsmentioning

confidence: 99%

Spectroscopic elucidation of structure-property relations in filaments melt-spun from amorphous polymers

Leal

Best

Rentsch

et al. 2017

European Polymer Journal

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Melt spinning and drawing of amorphous cyclo-olefin and co-polyamide polymeric materials were performed to develop mono-component continuous filaments. Raman spectroscopy was employed to assess the effect of a static bending deformation on the microstructure of the filaments. Spectra stemming from the fiber regions under tensile and compressive loading do not show any appreciable shift of their vibrational bands as a function of applied strain. The bent filaments manage to redistribute strains without any stretching or buckling of polymer chains associated with peak shifting in the Raman spectrum. The influence of fiber draw ratio on the degree of molecular ordering was demonstrated by means of polarized Raman spectroscopy. An increase in draw ratio leads to a variation of the polarization ratio for spectroscopic bands located along the polymer backbone. We observed a correlation between the polarization ratio of these vibrational bands and the macroscopic tensile modulus of the material.

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Section: Methodsmentioning

confidence: 99%

Spectroscopic elucidation of structure-property relations in filaments melt-spun from amorphous polymers

Leal

Best

Rentsch

et al. 2017

European Polymer Journal

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“…Type-I sample specifications were selected with a thickness of 3.2 mm. Testing speed was selected according to the sample specifications and ASTM standards for polyamides (43)(44)(45).…”

Section: Sample Preparationmentioning

confidence: 99%

Enhancing tribo-mechanical properties and thermal stability of nylon 6 by hexagonal boron nitride fillers

Randhawa

Patel

2020

E-Polymers

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Mechanical and tribological properties of nylon 6 and nylon 6/h-BN composites were investigated in this paper. Tensile, hardness, and impact tests were carried out for mechanical properties, while wear tests on pin-on-disc were carried out for tribological properties identification. Abrasion resistance tests were carried out on the TABER apparatus to analyze the abrasive wear of materials. SEM, XRD, and TGA were used to characterize the materials and to understand the distinctive features of nylon 6 and nylon 6/h-BN composites. Experimental results show that the mechanical properties and tribological behavior of nylon 6 got enhanced by the h-BN fillers. Tensile strength and modulus of elasticity were enhanced by 15.2% and 64.5%, respectively, while hardness and impact strength were enhanced by 3.45% and 6%, respectively. COF and wear rate of composites decreased up to 4 wt% filler reinforcement due to smooth transfer film formation. Coefficient of friction (COF) and wear resistance were improved by 10–15% and 8–10%, respectively, at various testing conditions. h-BN reinforcement in the matrix resulted in more weight loss due to abrasion and it reduced the abrasion resistance of nylon 6 by 5.5 times. Thermal stability was slightly increased, and crystallinity was little affected by the h-BN fillers.

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Critical assessment of structural changes in some copolyamide‐clay hybrid materials in correlation with the filler characteristics

Zănoagă¹,

Airinei²,

Fifere³

et al. 2021

Polymer Composites

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A series of three copolyamide‐clay hybrid nanocomposites were prepared using three different smectite clays (bentonite, montmorillonite K10, and Nanomer I.30P) by a solventless melt mixing process. The influence of the nature of clays on the structural changes was critically assessed by comparison with the neat copolyamide. Nanocomposite samples were analyzed by scanning electron microscopy (SEM), wide angle X‐ray diffractometry (WAXD), UV–vis spectrometry and differential scanning calorimetry (DSC). The testing yielded in direct and indirect evidences of structural changes induced by the presence of clays in correlation with their characteristics, as nature of the clay, particle size, granulometric distribution, and particle dispersion into the matrix.

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Thermomechanical Assessment of Plastic Deformation in Model Amorphous Polyamide/Clay Nanocomposites

Cited by 6 publications

References 27 publications

Spectroscopic elucidation of structure-property relations in filaments melt-spun from amorphous polymers

Spectroscopic elucidation of structure-property relations in filaments melt-spun from amorphous polymers

Enhancing tribo-mechanical properties and thermal stability of nylon 6 by hexagonal boron nitride fillers

Critical assessment of structural changes in some copolyamide‐clay hybrid materials in correlation with the filler characteristics

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