Post-yield fracture behaviour of PA-6/LDPE-g-MA/nanoclay ternary nanocomposites: semiductile-to-ductile transition

Dayma, Naresh; Jaggi, Harjeet S.; Satapathy, Bhabani K.

doi:10.1007/s10965-012-0038-8

Cited by 9 publications

(5 citation statements)

References 37 publications

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Section: Introductionmentioning

confidence: 99%

“…The outcome in these mixtures is a decrease in triaxial stress by allowing the dispersed phase to efficiently function as a stress concentrator and cavitation agent. [14,15] As a result, the matrix loses a lot of impact energy due to plastic deformation and crack growth blunting, which greatly enhances the fracture toughness. [16][17][18] Poly(octene-ethylene) (POE) is a polyolefin elastomer and one of the special classes of functional polyolefin for polyamide due to its small elasticity-to-plasticity ratio, which uses as an impact modifier.…”

Section: Introductionmentioning

confidence: 99%

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Fracture toughness of PA6/POE‐g‐MA/TiO₂ ternary nanocomposites according to the essential work fracture method

et al. 2023

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Polymer‐based nanocomposites can be used in a wide variety of applications in the industrial, electronics, and energy segments. In order to attain the application‐specific properties that are desired, good mechanical and fracture efficiency is frequently required. Polyamide 6 (PA6)/polyethylene octene grafted with maleic anhydride (POE‐g‐MA)/titanium dioxide (TiO2) nanocomposites' fracture characteristics were investigated utilizing the essential work of fracture (EWF) approach in this work. Four levels of POE‐g‐MA (0, 10, 20, and 30 wt%) and three levels of TiO2 (0, 2, and 4 wt%) are therefore utilized. The reliability of the EWF theory is demonstrated via the self‐similarity of the force‐displacement curve and Hill's analysis. Results showed that EWF and non‐essential work of fracture (non‐EWF) were improved by 73% and 54%, respectively, by increasing POE‐g‐MA up to 30 wt%. The improvement of EWF value confirmed the role of POE‐g‐MA as an impact modifier. Nevertheless, by increasing TiO2 up to 4 wt%, EWF, and non‐EWF decrease by 20% and 25%, respectively. Adding 30 wt% POE‐g‐MA reduced tensile strength and enhanced strain at the break by 45% and 109%, respectively. Moreover, the tensile strength was enhanced up to 10% by adding 4 wt% of TiO2 content. However, the strain at break was decreased by 44% by increasing 4 wt% of TiO2 nanoparticle. In addition, the dominant fracture mechanism in polyamide‐based blends and nanocomposites is shear‐yielding and fibrillation structures.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Fracture toughness of PA6/POE‐g‐MA/TiO₂ ternary nanocomposites according to the essential work fracture method

et al. 2023

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“…The specific non‐EWF value signifies the quantitative measurement of the plastic deformation capability at the crack‐tip, which can be correlated to the fracture ductility . By correlating β B w p,B with the failure mode of EWF tests defined by the profile of load‐displacement curves in Fig.…”

Section: Resultsmentioning

confidence: 99%

Fracture characterization of recycled high density polyethylene/nanoclay composites using the essential work of fracture concept

Spatari

Hsuan

2015

Polym Eng Sci

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The effect of nanoclay on the plane-strain fracture behavior of pristine High density polyethylene (HDPE) and recycled HDPE blends was studied using the essential work of fracture (EWF) concept. The failure mode of EWF tested specimens was found to be associated with the specific non-EWF (b B w p,B ). Adding 6-wt% of nanoclay to pristine HDPE and 2-wt% to recycle-blends greatly decreased the b B w p,B values and led to a transition from ductile to brittle failure mode. A fractographic study revealed that the difference in failure modes was caused by the changes in micro and macro morphologies, which could be related with the specific EWF (w e,B ). In the ductile failure, w e,B is governed by the fibril size; adding nanoclay and recycled HDPE to pristine HDPE decreased the fibril size and subsequently lowered the w e,B value. In the brittle failure, the w e,B value was enhanced by creating a rough fracture surface. Adding nanoclay to pristine HDPE, a steadily decrease in w e,B was measured until 4-wt% after which the change was insignificant. Conversely, nanoclay content more than 2-wt% in recycle-blends greatly decreased the w e,B value. A transition map was constructed to illustrate the potential failure mode and the associated fracture morphology based on the tested material compositions. POLYM. ENG. SCI., 56:222-232, 2016.

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“…10,[13][14][15] Given this fact, it has been said that in polymer blends containing PA6 as the matrix, the mixing order does not effect on the mechanical properties and the procedure mixing of the phases results in an increase in the mechanical and rheological properties. [16][17][18][19][20] Effects of various parameters such as, blending sequence, chamber temperature, and rotor speed on nanocomposite mechanical properties and morphology were studied in prior reports. 21,22 In this paper, we investigate the advantages associated with the blend using the compatibilizer glycidyl methacrylate (GMA)-grafted XNBR (XNBR-g-GMA) reactive rubber in PA6/XNBR/nanoclay nanocomposites.…”

Section: Introductionmentioning

confidence: 99%

“…Reports indicate that the localization of nanoclay deeply affects all the characteristics of nanocomposites, which is why the researchers are very interested in research about the effects of the processing terms such as, rotational speed, temperature, blending sequence, and screw configuration, etc., on the mechanical properties of nanocomposites 10,13–15 . Given this fact, it has been said that in polymer blends containing PA6 as the matrix, the mixing order does not effect on the mechanical properties and the procedure mixing of the phases results in an increase in the mechanical and rheological properties 16–20 . Effects of various parameters such as, blending sequence, chamber temperature, and rotor speed on nanocomposite mechanical properties and morphology were studied in prior reports 21,22 .…”

Section: Introductionmentioning

confidence: 99%

Localization of different types of organoclay montmorillonite in the compatibilized polyamide 6/carboxylated acrylonitrile butadiene rubber nanocomposites: Morphology and rheological properties

Azizli

Barghamadi

Rezaeeparto³

et al. 2021

J of Applied Polymer Sci

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In this study, nanocomposites based on polyamide 6/carboxylated acrylonitrile butadiene rubber (PA6/XNBR) reinforced by the clay montmorillonite (OMMT) (Cloisite 20A and Cloisite 30B) were prepared by melt mixing. Glycidyl methacrylate-grafted XNBR (XNBR-g-GMA) compatibilizer was used for immiscible blends of PA6/XNBR. The results illustrated that OMMT wanted to be selectively present in the more hydrophilic PA6 phase. Also, by adding the XNBR-g-GMA compatibilizer and increasing OMMT content, tensile strength, rheological and dynamic mechanical properties of the nanocomposites improved. According to transmission electron microscopy (TEM) images, a few layers of OMMT (Cloisite 20A) in the XNBR-g-GMA compatibilizer phase was observed. The results of X-ray diffractometry and TEM analyses demonstrated that the formation of intercalated or exfoliated structures for both types of OMMT nanocomposites. In end of all analysis was found PA6/XNBR reinforced by the Cloisite 30B could be substantially improved by adding XNBR-g-GMA as a compatibilizer when compared to those reinforced by Cloisite 20A.

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Post-yield fracture behaviour of PA-6/LDPE-g-MA/nanoclay ternary nanocomposites: semiductile-to-ductile transition

Cited by 9 publications

References 37 publications

Fracture toughness of PA6/POE‐g‐MA/TiO₂ ternary nanocomposites according to the essential work fracture method

Fracture toughness of PA6/POE‐g‐MA/TiO₂ ternary nanocomposites according to the essential work fracture method

Fracture characterization of recycled high density polyethylene/nanoclay composites using the essential work of fracture concept

Localization of different types of organoclay montmorillonite in the compatibilized polyamide 6/carboxylated acrylonitrile butadiene rubber nanocomposites: Morphology and rheological properties

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Post-yield fracture behaviour of PA-6/LDPE-g-MA/nanoclay ternary nanocomposites: semiductile-to-ductile transition

Cited by 9 publications

References 37 publications

Fracture toughness of PA6/POE‐g‐MA/TiO2 ternary nanocomposites according to the essential work fracture method

Fracture toughness of PA6/POE‐g‐MA/TiO2 ternary nanocomposites according to the essential work fracture method

Fracture characterization of recycled high density polyethylene/nanoclay composites using the essential work of fracture concept

Localization of different types of organoclay montmorillonite in the compatibilized polyamide 6/carboxylated acrylonitrile butadiene rubber nanocomposites: Morphology and rheological properties

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Fracture toughness of PA6/POE‐g‐MA/TiO₂ ternary nanocomposites according to the essential work fracture method

Fracture toughness of PA6/POE‐g‐MA/TiO₂ ternary nanocomposites according to the essential work fracture method