Properties and semicrystalline structure evolution of polypropylene/ montmorillonite nanocomposites under mechanical load

Norbert Stribeck; Ahmad Zeinolebadi; Morteza Ganjaee Sari; Stephan Botta; Katja Jankova; Søren Hvilsted; Aleksey Drozdov; Rasmus Klitkou; Catalina Gabriela Potarniche; Jesper Declaville Christiansen; Valentina Ermini

doi:10.1021/ma202004f

Properties and semicrystalline structure evolution of polypropylene/ montmorillonite nanocomposites under mechanical load

Norbert Stribeck, Ahmad Zeinolebadi, Morteza Ganjaee Sari, Stephan Botta, Katja Jankova, Søren Hvilsted, Aleksey Drozdov, Rasmus Klitkou, Catalina Gabriela Potarniche, Jesper Declaville Christiansen, Valentina Ermini

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

30 Scopus citations

Abstract

Small-angle X-ray scattering (SAXS) monitors tensile and load-cycling tests of metallocene isotactic polypropylene (PP), a blend of PP and montmorillonite (MMT), and two block copolymer compatibilized PP/MMT nanocomposites. Mechanical properties of the materials are similar, but the semicrystalline nanostructure of the PP differs. This is explained by a nucleation effect of the MMT. Competitive crystal growth diminishes crystallite sizes. The reinforcing effect of the MMT filler appears consumed by weakening the PP matrix. Decays of mechanical and nanostructure response in dynamic load cycling indicate materials fatigue. Lifetimes describe the reinforcing and weakening effects. Addition of 3% MMT halves the fortifying effect of the PP nanostructure. A net gain of reinforcement (11%) is observed with the highly compatibilized composite in which the strength of the semicrystalline PP is reduced to 25%. Other results concern the evolution of Strobl's block structure and void formation during tensile loading.

Original language	English
Pages (from-to)	962-973
Number of pages	12
Journal	Macromolecules
Volume	45
Issue number	2
DOIs	https://doi.org/10.1021/ma202004f
State	Published - 24 Jan 2012
Externally published	Yes

ASJC Scopus subject areas

Organic Chemistry
Polymers and Plastics
Inorganic Chemistry
Materials Chemistry

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10.1021/ma202004f

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title = "Properties and semicrystalline structure evolution of polypropylene/ montmorillonite nanocomposites under mechanical load",

abstract = "Small-angle X-ray scattering (SAXS) monitors tensile and load-cycling tests of metallocene isotactic polypropylene (PP), a blend of PP and montmorillonite (MMT), and two block copolymer compatibilized PP/MMT nanocomposites. Mechanical properties of the materials are similar, but the semicrystalline nanostructure of the PP differs. This is explained by a nucleation effect of the MMT. Competitive crystal growth diminishes crystallite sizes. The reinforcing effect of the MMT filler appears consumed by weakening the PP matrix. Decays of mechanical and nanostructure response in dynamic load cycling indicate materials fatigue. Lifetimes describe the reinforcing and weakening effects. Addition of 3% MMT halves the fortifying effect of the PP nanostructure. A net gain of reinforcement (11%) is observed with the highly compatibilized composite in which the strength of the semicrystalline PP is reduced to 25%. Other results concern the evolution of Strobl's block structure and void formation during tensile loading.",

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doi = "10.1021/ma202004f",

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T1 - Properties and semicrystalline structure evolution of polypropylene/ montmorillonite nanocomposites under mechanical load

AU - Stribeck, Norbert

AU - Zeinolebadi, Ahmad

AU - Ganjaee Sari, Morteza

AU - Botta, Stephan

AU - Jankova, Katja

AU - Hvilsted, Søren

AU - Drozdov, Aleksey

AU - Klitkou, Rasmus

AU - Potarniche, Catalina Gabriela

AU - Christiansen, Jesper Declaville

AU - Ermini, Valentina

PY - 2012/1/24

Y1 - 2012/1/24

N2 - Small-angle X-ray scattering (SAXS) monitors tensile and load-cycling tests of metallocene isotactic polypropylene (PP), a blend of PP and montmorillonite (MMT), and two block copolymer compatibilized PP/MMT nanocomposites. Mechanical properties of the materials are similar, but the semicrystalline nanostructure of the PP differs. This is explained by a nucleation effect of the MMT. Competitive crystal growth diminishes crystallite sizes. The reinforcing effect of the MMT filler appears consumed by weakening the PP matrix. Decays of mechanical and nanostructure response in dynamic load cycling indicate materials fatigue. Lifetimes describe the reinforcing and weakening effects. Addition of 3% MMT halves the fortifying effect of the PP nanostructure. A net gain of reinforcement (11%) is observed with the highly compatibilized composite in which the strength of the semicrystalline PP is reduced to 25%. Other results concern the evolution of Strobl's block structure and void formation during tensile loading.

AB - Small-angle X-ray scattering (SAXS) monitors tensile and load-cycling tests of metallocene isotactic polypropylene (PP), a blend of PP and montmorillonite (MMT), and two block copolymer compatibilized PP/MMT nanocomposites. Mechanical properties of the materials are similar, but the semicrystalline nanostructure of the PP differs. This is explained by a nucleation effect of the MMT. Competitive crystal growth diminishes crystallite sizes. The reinforcing effect of the MMT filler appears consumed by weakening the PP matrix. Decays of mechanical and nanostructure response in dynamic load cycling indicate materials fatigue. Lifetimes describe the reinforcing and weakening effects. Addition of 3% MMT halves the fortifying effect of the PP nanostructure. A net gain of reinforcement (11%) is observed with the highly compatibilized composite in which the strength of the semicrystalline PP is reduced to 25%. Other results concern the evolution of Strobl's block structure and void formation during tensile loading.

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DO - 10.1021/ma202004f

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SN - 0024-9297

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JO - Macromolecules

JF - Macromolecules

IS - 2

ER -

Properties and semicrystalline structure evolution of polypropylene/ montmorillonite nanocomposites under mechanical load

Abstract

ASJC Scopus subject areas

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