The effects of interfacial interactions on lamellar morphologies in thin and ultrathin films and nanocomposites of LLDPE

Avigail Hershkovits-Mezuman; Hannah Harel; Yantian Wang; Chunhua Li; Jonathan C. Sokolov; Miriam H. Rafailovich; Gad Marom

doi:10.1016/j.compositesa.2009.10.017

The effects of interfacial interactions on lamellar morphologies in thin and ultrathin films and nanocomposites of LLDPE

Avigail Hershkovits-Mezuman, Hannah Harel^*, Yantian Wang, Chunhua Li, Jonathan C. Sokolov, Miriam H. Rafailovich, Gad Marom

^*Corresponding author for this work

Institute of Chemistry

Research output: Contribution to journal › Article › peer-review

8 Scopus citations

Abstract

The transition from edge-on to flat-on morphology under confinement in spin-cast pristine and carbon nanofiber (CNF) or nanoclay (NC) filled linear low-density polyethylene thin films is investigated with emphasis on the surface interaction component. The morphology transition is observed by scanning probe microscopy and is linked to melting point depression and shear modulus decrease at the corresponding transition. A thermodynamic model, based on Gibbs' free energy of crystallization according to Hoffman's crystallization theory, is proposed to account for these phenomena. Particularly, the model can predict the confined film thickness at the morphology transition and, in part, the extent of melting point downshifting.

Original language	English
Pages (from-to)	1066-1071
Number of pages	6
Journal	Composites Part A: Applied Science and Manufacturing
Volume	41
Issue number	9
DOIs	https://doi.org/10.1016/j.compositesa.2009.10.017
State	Published - Sep 2010

Keywords

A. Nano-structures
A. Thin films
B. Surface properties
Confinement

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10.1016/j.compositesa.2009.10.017

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title = "The effects of interfacial interactions on lamellar morphologies in thin and ultrathin films and nanocomposites of LLDPE",

abstract = "The transition from edge-on to flat-on morphology under confinement in spin-cast pristine and carbon nanofiber (CNF) or nanoclay (NC) filled linear low-density polyethylene thin films is investigated with emphasis on the surface interaction component. The morphology transition is observed by scanning probe microscopy and is linked to melting point depression and shear modulus decrease at the corresponding transition. A thermodynamic model, based on Gibbs' free energy of crystallization according to Hoffman's crystallization theory, is proposed to account for these phenomena. Particularly, the model can predict the confined film thickness at the morphology transition and, in part, the extent of melting point downshifting.",

keywords = "A. Nano-structures, A. Thin films, B. Surface properties, Confinement",

author = "Avigail Hershkovits-Mezuman and Hannah Harel and Yantian Wang and Chunhua Li and Sokolov, {Jonathan C.} and Rafailovich, {Miriam H.} and Gad Marom",

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T1 - The effects of interfacial interactions on lamellar morphologies in thin and ultrathin films and nanocomposites of LLDPE

AU - Hershkovits-Mezuman, Avigail

AU - Harel, Hannah

AU - Wang, Yantian

AU - Li, Chunhua

AU - Sokolov, Jonathan C.

AU - Rafailovich, Miriam H.

AU - Marom, Gad

PY - 2010/9

Y1 - 2010/9

N2 - The transition from edge-on to flat-on morphology under confinement in spin-cast pristine and carbon nanofiber (CNF) or nanoclay (NC) filled linear low-density polyethylene thin films is investigated with emphasis on the surface interaction component. The morphology transition is observed by scanning probe microscopy and is linked to melting point depression and shear modulus decrease at the corresponding transition. A thermodynamic model, based on Gibbs' free energy of crystallization according to Hoffman's crystallization theory, is proposed to account for these phenomena. Particularly, the model can predict the confined film thickness at the morphology transition and, in part, the extent of melting point downshifting.

AB - The transition from edge-on to flat-on morphology under confinement in spin-cast pristine and carbon nanofiber (CNF) or nanoclay (NC) filled linear low-density polyethylene thin films is investigated with emphasis on the surface interaction component. The morphology transition is observed by scanning probe microscopy and is linked to melting point depression and shear modulus decrease at the corresponding transition. A thermodynamic model, based on Gibbs' free energy of crystallization according to Hoffman's crystallization theory, is proposed to account for these phenomena. Particularly, the model can predict the confined film thickness at the morphology transition and, in part, the extent of melting point downshifting.

KW - A. Nano-structures

KW - A. Thin films

KW - B. Surface properties

KW - Confinement

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The effects of interfacial interactions on lamellar morphologies in thin and ultrathin films and nanocomposites of LLDPE

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