Non-isothermal crystallization behavior of PLA/LLDPE/nanoclay hybrid: Synergistic role of LLDPE and clay

As’habi, L.; Jafari, Seyed Hassan; Khonakdar, Hossein Ali; Häußler, Liane; Wagenknecht, Udo; Heinrich, Gert

doi:10.1016/j.tca.2013.04.016

Cited by 55 publications

(15 citation statements)

References 43 publications

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“…In order to determine the crystallization enthalpy (DH c ), cold crystallization enthalpy (DH cc ) and melting enthalpy (DH m ), the cooling and second heating scans were used. The X c of samples was calculated using the following equation [29,30]:…”

Section: Differential Scanning Calorimetry (Dsc)mentioning

confidence: 99%

“…As shown in the thermograph of PLA-rich sample (Fig. 3b), the small area of the PP crystallization peak compared to that of PP-rich one implies crystal defects [29,30]. The mechanism of diffusion in the defects is analogous to gas diffusing in very small pores, so that diffusion through them is much easier than through amorphous regions in the polymer [39,41].…”

Section: Blend Morphology and Permeability Relationshipmentioning

confidence: 99%

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On O2 gas permeability of PP/PLA/clay nanocomposites: A molecular dynamic simulation approach

et al. 2015

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Section: Differential Scanning Calorimetry (Dsc)mentioning

confidence: 99%

Section: Blend Morphology and Permeability Relationshipmentioning

confidence: 99%

On O2 gas permeability of PP/PLA/clay nanocomposites: A molecular dynamic simulation approach

et al. 2015

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“…EVA 8430 (MFI = 2.2 g/10 min; 190 °C, 2.160 kg, vinyl acetate content = 18 wt%) from Hyundai Company, South Korea, were applied as received. Cloisite 15A with a CEC of 125 mequiv/100 g having dimethyl, dehydrogenated tallow, quaternary ammonium modifier were obtained from Southern Clay Products . Also, ammonium polyphosphate (APP) with a polymerization degree higher than 1000 from Sichuan company, China, along with pentaerythritol (PER) from Kita‐Ku company, (Japan), were applied as a intumescent halogen‐free flame retardant system.…”

Section: Methodsmentioning

confidence: 99%

Thermal stability and flammability of ethylene vinyl acetate copolymers in presence of nanoclay and a halogen‐free flame retardant

Entezam

Khonakdar

Jafari

et al. 2016

Vinyl Additive Technology

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In this study, thermal stability behavior and flammability of ethylene-vinyl-acetate (EVA) copolymers containing organo-modified nanoclay particles (Cloisite 15A) and ammonium polyphosphate (APP) along with pentaerythritol (PER), as halogen-free flame retardants, were investigated. Transmission electron microscopy (TEM) and small-angle X-ray scattering (SAXS) were employed for evaluation of the level of dispersion of nanosheets within the EVA matrix. Moreover, thermal stability behavior and flammability of the samples were studied using thermogravimetric analysis (TGA), cone calorimetry thermometer (CCT) and limiting oxygen index (LOI). The obtained results from TEM and SAXS showed that nanosheets exhibited a rather proper level of dispersion within the EVA matrix. According to TGA and CCT results, despite improving the thermal stability and flame retardancy of EVA due to incorporation of the individual additives, a considerable synergistic effect was observed upon simultaneous use of clay nanosheets and the flame retardants. Such synergistic effect was explained by the physical mechanism of the solid phase due to the increased residual ash resulted from combustion of the samples containing flame retardants and clay nanosheets. While clay nanosheets had no significant effect on the LOI of EVA, the halogen-free flame retardants substantially increased the LOI of EVA. J. VINYL ADDIT. TECHNOL., 23:E92-E98, 2017.

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“…The enhancement of mechanical and thermal properties of LLDPE/PLA nanocomposites were observed due to well‐dispersed MMT platelets. The nonisothermal crystallization behaviors of PLA and its blend nanocomposites with LLDPE were investigated in the presence of commercial grade nano‐clays . The results presented that nano‐clays have acted as a good nucleating agent in promoting the crystallization of LLDPE/PLA blends.…”

Section: Introductionmentioning

confidence: 99%

Rheology and morphology study of immiscible linear low‐density polyethylene/poly(lactic acid) blends filled with nanosilica particles

Hoseini

Haghtalab

Famili

2017

J of Applied Polymer Sci

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The objectives of this study are to investigate the effect of silica nanoparticles on the morphology and rheological behavior of immiscible linear low‐density polyethylene/poly(lactic acid) (LLDPE/PLA) blends. Melt blending method is applied to prepare the blends and their nanocomposites. Scanning electron microscope and parallel plate rheometer were used to investigate morphology and rheological behavior of the blend nanocomposites. Scanning electron microscope results demonstrated a significant change in morphology behavior by incorporation of silica nanoparticles. A significant reduction in the PLA droplet for LLDPE/PLA (75/25) with 8 wt % silica was observed. The rheological studies illustrated that for all samples storage modulus and complex viscosity of blend nanocomposites are higher than neat blends. Finally, melt rigidity of blend nanocomposites was estimated by measurement of rheological properties using a rotational rheometer through small amplitude oscillatory shear experiments. As a result, through the shear data, a high value quantity as a criteria for melt rigidity is obtained for the LLDPE/PLA (75/25) with 8 wt % silica in comparing to the other samples. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017, 134, 45526.

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Non-isothermal crystallization behavior of PLA/LLDPE/nanoclay hybrid: Synergistic role of LLDPE and clay

Cited by 55 publications

References 43 publications

On O2 gas permeability of PP/PLA/clay nanocomposites: A molecular dynamic simulation approach

On O2 gas permeability of PP/PLA/clay nanocomposites: A molecular dynamic simulation approach

Thermal stability and flammability of ethylene vinyl acetate copolymers in presence of nanoclay and a halogen‐free flame retardant

Rheology and morphology study of immiscible linear low‐density polyethylene/poly(lactic acid) blends filled with nanosilica particles

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