Mechanical Properties of Linear Low‐density Polyethylene (LLDPE)/clay Nanocomposites: Estimation of Aspect Ratio and İnterfacial Strength by Composite Models

Durmuş, Ali; Kaşgöz, Ahmet; Macosko, Christopher W.

doi:10.1080/00222340801957780

Cited by 51 publications

(51 citation statements)

References 22 publications

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“…The yield stress increases slowly with increasing GO content but strain at yield slightly increases at low GO loading then decreases at the highest (0.7 wt%) GO content. Similar results were obtained by Durmus et al [43] for polyethylene (LLDPE)/clay nanocomposites.…”

Section: Thermal Properties Of Nanocompositessupporting

confidence: 79%

Structure and properties of nanocomposites based on PTT-block-PTMO copolymer and graphene oxide prepared by in situ polymerization

Paszkiewicz¹,

Szymczyk²,

Špitálský³

et al. 2014

European Polymer Journal

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a b s t r a c tPoly(trimethylene terephthalate-block-tetramethylene oxide) (PTT-PTMO) copolymer/ graphene oxide nanocomposites were prepared by in situ polymerization. From the SEM and TEM images of PTT-PTMO/GO nanocomposite, it can be seen that GO sheets are clearly well-dispersed in the PTT-PTMO matrix. TEM images also showed that graphene was well exfoliated into individual sheets, suggesting that in situ polymerization is a highly efficient method for preparing nanocomposites. The influence of GO on the two-phase structure, melt viscosity and mechanical properties of PTT-PTMO block copolymer was examined by using DSC, ARES rheometer and tensile tests. The DSC results imply that the introduction of GO did not affect the glass transition temperature of PTMO-rich soft phase, melting temperature of PTT hard phase and degree of crystallinity of the nanocomposites. As the graphene oxide loading in the nanocomposites increase, the enhanced Young's modulus and yield stress was observed. The tensile strength slightly increased with the increase of GO from 0 to 0.5 wt% when elongation at break was higher or comparable to the value of neat PTT-PTMO copolymer.

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Section: Thermal Properties Of Nanocompositessupporting

confidence: 79%

Structure and properties of nanocomposites based on PTT-block-PTMO copolymer and graphene oxide prepared by in situ polymerization

Paszkiewicz¹,

Szymczyk²,

Špitálský³

et al. 2014

European Polymer Journal

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“…Microscopic studies revealed that the presence of clay modified the micro-mechanisms of deformation compared to the pure matrix, favoring multiple crazing and shear yielding. In the field of polyethylene/clay composites, most studies reported a decrease in elongation at break [6][7][8][9][10][11][12][13][14][15], at the exception of two studies involving LLDPE matrices [16,17]. Zhang and Sundararaj [16] observed an increase of 50% in elongation at break for LLDPE/ LLDPE-g-MA/clay (5 wt.%) nanocomposites.…”

Section: Introductionmentioning

confidence: 99%

Micro-mechanisms of deformation in polyethylene/clay micro- and nanocomposites

Stoeffler

Lafleur

Perrin‐Sarazin

et al. 2011

Composites Part A: Applied Science and Manufacturing

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“…In particular, considerable resources have been dedicated in the research of thermoplastic matrices modified with polar nanofillers (such as silicas, metal oxides, metal salts, layered silicates, etc…) in order to enhanced their thermal, mechanical and rheological performances [4][5][6][7][8]. On the other hand, these nanofillers are generally poorly dispersed in apolar thermoplastics (such as polyolefins), thus limiting their beneficial effects on the target thermo-mechanical properties.…”

Section: Introductionmentioning

confidence: 99%

Thermal, viscoelastic and mechanical behavior of polypropylene with synthetic boehmite alumina nanoparticles

Pedrazzoli¹,

Khumalo²,

Karger‐Kocsis³

et al. 2014

Polymer Testing

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Effects of nanofiller concentration and surface treatments on the morphology, thermal, viscoelastic and mechanical behaviors of polypropylene copolymer (PP)/boehmite alumina (BA) nanocomposites were investigated. Both untreated and treated BA particles with octylsilane (OS) and with sulphonic acid compound (OS2) were added up to 10 wt% to produce nanocomposites by melt mixing followed by film blow molding and hot pressing. Dispersion of BA was studied by scanning electron microscopy. Differential scanning calorimetry and wide-angle X-ray scattering were adopted to detect changes in the crystalline structure of PP. Thermooxidative degradation of the nanocomposites was assessed by thermogravimetrical analysis. Dynamic mechanical analysis served for studying the viscoelastic, whereas quasi-static tensile, creep and Elmendorf tear tests were used to detect changes in the mechanical performance. BA nanoparticles were finely dispersed in PP up to 10 wt%, even when they were not surface modified. The resistance to thermal degradation was markedly improved by BA nanomodification. Changes observed in the mechanical properties were attributed to BA dispersion, filler/matrix interactions and related effects because the crystalline characteristics of the PP matrix practically did not change with BA modification.

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Mechanical Properties of Linear Low‐density Polyethylene (LLDPE)/clay Nanocomposites: Estimation of Aspect Ratio and İnterfacial Strength by Composite Models

Cited by 51 publications

References 22 publications

Structure and properties of nanocomposites based on PTT-block-PTMO copolymer and graphene oxide prepared by in situ polymerization

Structure and properties of nanocomposites based on PTT-block-PTMO copolymer and graphene oxide prepared by in situ polymerization

Micro-mechanisms of deformation in polyethylene/clay micro- and nanocomposites

Thermal, viscoelastic and mechanical behavior of polypropylene with synthetic boehmite alumina nanoparticles

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