Impact strength of polymer-clay nanocomposites

Chen, Biqiong; Evans, Julian

doi:10.1039/b902073j

Cited by 88 publications

(66 citation statements)

References 83 publications

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“…Ultimately, a combination of tensile modulus, tensile strength and elongation must be considered. 30 It was found in the current study that the best combination of these properties was obtained at 3% EC/PA12. As can be seen from the table in Fig.…”

Section: Testing the Mechanical Propertiesmentioning

confidence: 80%

Nanoclay/Polymer Composite Powders for Use in Laser Sintering Applications: Effects of Nanoclay Plasma Treatment

Almansoori

Majewski

Rodenburg

2017

JOM

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Plasma-etched nanoclay-reinforced Polyamide 12 (PA12) powder is prepared with its intended use in selective laser sintering (LS) applications. To replicate the LS process we present a downward heat sintering (DHS) process, carried out in a hot press, to fabricate tensile test specimens from the composite powders. The DHS parameters are optimized through hot stage microscopy, which reveal that the etched clay (EC)-based PA12 (EC/PA12) nanocomposite powder melts at a temperature 2°C higher than that of neat PA12, and 1-3°C lower than that of the nonetched clay-based nanocompsite (NEC/PA12 composite). We show that these temperature differences are critical to successful LS. The distribution of EC and NEC onto PA12 is investigated by scanning electron microscopy (SEM). SEM images show clearly that the plasma treatment prevents the micron-scale aggregation of the nanoclay, resulting in an improved elastic modulus of EC/PA12 when compared with neat PA12 and NEC/PA12. Moreover, the reduction in elongation at break for EC/PA12 is less pronounced than for NEC/PA12.

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Section: Testing the Mechanical Propertiesmentioning

confidence: 80%

Nanoclay/Polymer Composite Powders for Use in Laser Sintering Applications: Effects of Nanoclay Plasma Treatment

Almansoori

Majewski

Rodenburg

2017

JOM

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“…Adsorption on montmorillonite has been of interest for centuries due to the clay's high CEC, surface area, and swelling properties. Thus, numerous studies have been performed on interactions at the clay surface [3][4][5][6][7][8]. In addition to its superior surface properties, montmorillonite is widely used in a variety of industrial applications due to its low cost and low toxicity [9][10][11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Applying zeta potential measurements to characterize the adsorption on montmorillonite of organic cations as monomers, micelles, or polymers

Zadaka

Radian

Mishael

2010

Journal of Colloid and Interface Science

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“…The area under stress-strain curves, namely work or energy dissipated during tensile process, can be used to evaluate the toughness of a material (Chen & Evans, 2009;Monette, Anderson, & Grest, 1993). The work of each PHB/EVA/starch specimen was recorded automatically by the tensile tester and summarized in Fig.…”

Section: Mechanical Properties Of the Phb/eva/starch Blendsmentioning

confidence: 99%

Structure–property relationships of reactively compatibilized PHB/EVA/starch blends

Piming

Chen

et al. 2014

Carbohydrate Polymers

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a b s t r a c tA method is addressed to prepare poly(hydroxybutyrate)/poly(ethylene-co-vinyl acetate)/starch (PHB/EVA/starch) blends with fine dispersion of starch, i.e. by an in situ compatibilization in the presence of maleic anhydride (MA) and peroxide. The starch particle size is reduced from hundreds-m to sub-m after the compatibilization accompanied by an improvement in interfacial adhesion. Meanwhile, starch-in-EVA-type morphology is observed in the blends. The EVA and starch gradually changed into a (partially) co-continuous phase with increasing MA content. Consequently, toughness of the blends was improved as evidenced by an increase in elongation at break and tensile-fracture energy (work). Cavitation, fibrillation and matrix yielding are regarded as the toughening mechanism for the compatibilized blends. In addition, the T g of the EVA phase is dependent on its phase morphology in the blends while the thermal behavior of the PHB was only slightly affected by the compatibilization.

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Impact strength of polymer-clay nanocomposites

Cited by 88 publications

References 83 publications

Nanoclay/Polymer Composite Powders for Use in Laser Sintering Applications: Effects of Nanoclay Plasma Treatment

Nanoclay/Polymer Composite Powders for Use in Laser Sintering Applications: Effects of Nanoclay Plasma Treatment

Applying zeta potential measurements to characterize the adsorption on montmorillonite of organic cations as monomers, micelles, or polymers

Structure–property relationships of reactively compatibilized PHB/EVA/starch blends

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