2011
DOI: 10.5755/j01.ms.17.3.589
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Thermal Analyses of Blends of Hyperbranched Linear Low-density Polyethylene (LLDPE) with High-density Polyethylene and LLDPE Prepared by Dissolving Method

Abstract: Blends of high-density polyethylene (HDPE), moderate and hyper-branched LLDPEs (LLDPE and HbPE, respectively) have attained widespread commercial applications, though the understanding of the mechanical and melt-flow properties of such blends has been handicapped by the absence of a consensus concerning the degrees of mixing of the components. Moreover, usually the blends are obtained by melt blending, which may not ensure the initial homogeneity of the components. In our work the mixtures were prepared by dis… Show more

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Cited by 8 publications
(5 citation statements)
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“…The diffusivities also show a surprisingly strong temperature dependence. The temperature dependence may be an artifact of the small data set, of the assumption that fL/k B T is small, or a consequence of crystalline polymer domain formation outside of the catalyst pore. , Note that the plateau values in Figure suggest that the polymer moves by ca. 20 nm in and out of the pore on typical excursions.…”
Section: Results and Analysis Of Nmr Datamentioning
confidence: 99%
“…The diffusivities also show a surprisingly strong temperature dependence. The temperature dependence may be an artifact of the small data set, of the assumption that fL/k B T is small, or a consequence of crystalline polymer domain formation outside of the catalyst pore. , Note that the plateau values in Figure suggest that the polymer moves by ca. 20 nm in and out of the pore on typical excursions.…”
Section: Results and Analysis Of Nmr Datamentioning
confidence: 99%
“…The crystallinity degree ( X c ) was calculated using ΔHm0, the 293 J/g melting enthalpy for 100% crystalline PE. 19,20…”
Section: Methodsmentioning
confidence: 99%
“…The crystallinity degree (X c ) was calculated using ΔH 0 m , the 293 J/g melting enthalpy for 100% crystalline PE. 19,20 Melt flow index. Before this test, the pellets were dried at 60°C for 4 hours.…”
Section: Thermal and Rheological Propertiesmentioning
confidence: 99%
“…Data were extracted from the first endothermic and the second exothermic transitions. The percentage crystallinity was calculated as the enthalpy of fusion taken from DSC divided by the enthalpy of 100% crystalline PE at 293 J g −1 …”
Section: Methodsmentioning
confidence: 99%