Thermoplastic vulcanizates based on highly compatible blends of isotactic poly(propylene) and copolymers of atactic poly(propylene) and 5-ethylidene-2-norbornene

R.M.A. L'Abee, R.J. Sablong, J.G.P. Goossens, M. Duin, van, A.B. Spoelstra, R. Duchateau

Research output: Contribution to journalArticleAcademicpeer-review

2 Citations (Scopus)

Abstract

Highly compatible thermoplastic/elastomer blends were used to prepare thermoplastic vulcanizates (TPVs) with refined morphologies and improved mechanical properties. Copolymers of atactic poly(propylene) (aPP) and 5-ethylidene-2-norbornene (ENB) (aPP-co-ENB)were prepared via metallocene catalysis. Blends of isotactic poly(propylene) (iPP) and the aPPco-ENB rubbers are immiscible in the melt, but the very high compatibility leads to a refinement of the morphology in comparison to blends based on iPP and ethylene-propylenediene (EPDM) rubber. The aPP-co-ENB-based blends show improved tensile properties, while the relatively high Tg of the rubber phase retards the elastic recovery at room temperature. Dilution of the TPVs with oil broadens the temperature window for applications by a signification reduction of the Tg and improves the elasticity of the TPVs. This study demonstrates that the lower limit of the rubber particle size of TPVs that is attainable via dynamic vulcanization of immiscible blends is in the order of 300–500 nm.
Original languageEnglish
Pages (from-to)334-344
JournalMacromolecular Chemistry and Physics
Volume211
Issue number3
DOIs
Publication statusPublished - 2010

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vulcanized elastomers
Rubber
polypropylene
Thermoplastics
Polypropylenes
copolymers
rubber
Copolymers
Thermoplastic elastomers
Vulcanization
Tensile properties
Catalysis
Dilution
tensile properties
elastomers
Elasticity
Ethylene
Oils
Particle size
compatibility

Cite this

@article{8f714b8f4c434698908f767d917b68a9,
title = "Thermoplastic vulcanizates based on highly compatible blends of isotactic poly(propylene) and copolymers of atactic poly(propylene) and 5-ethylidene-2-norbornene",
abstract = "Highly compatible thermoplastic/elastomer blends were used to prepare thermoplastic vulcanizates (TPVs) with refined morphologies and improved mechanical properties. Copolymers of atactic poly(propylene) (aPP) and 5-ethylidene-2-norbornene (ENB) (aPP-co-ENB)were prepared via metallocene catalysis. Blends of isotactic poly(propylene) (iPP) and the aPPco-ENB rubbers are immiscible in the melt, but the very high compatibility leads to a refinement of the morphology in comparison to blends based on iPP and ethylene-propylenediene (EPDM) rubber. The aPP-co-ENB-based blends show improved tensile properties, while the relatively high Tg of the rubber phase retards the elastic recovery at room temperature. Dilution of the TPVs with oil broadens the temperature window for applications by a signification reduction of the Tg and improves the elasticity of the TPVs. This study demonstrates that the lower limit of the rubber particle size of TPVs that is attainable via dynamic vulcanization of immiscible blends is in the order of 300–500 nm.",
author = "R.M.A. L'Abee and R.J. Sablong and J.G.P. Goossens and {Duin, van}, M. and A.B. Spoelstra and R. Duchateau",
year = "2010",
doi = "10.1002/macp.200900362",
language = "English",
volume = "211",
pages = "334--344",
journal = "Macromolecular Chemistry and Physics",
issn = "1022-1352",
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Thermoplastic vulcanizates based on highly compatible blends of isotactic poly(propylene) and copolymers of atactic poly(propylene) and 5-ethylidene-2-norbornene. / L'Abee, R.M.A.; Sablong, R.J.; Goossens, J.G.P.; Duin, van, M.; Spoelstra, A.B.; Duchateau, R.

In: Macromolecular Chemistry and Physics, Vol. 211, No. 3, 2010, p. 334-344.

Research output: Contribution to journalArticleAcademicpeer-review

TY - JOUR

T1 - Thermoplastic vulcanizates based on highly compatible blends of isotactic poly(propylene) and copolymers of atactic poly(propylene) and 5-ethylidene-2-norbornene

AU - L'Abee, R.M.A.

AU - Sablong, R.J.

AU - Goossens, J.G.P.

AU - Duin, van, M.

AU - Spoelstra, A.B.

AU - Duchateau, R.

PY - 2010

Y1 - 2010

N2 - Highly compatible thermoplastic/elastomer blends were used to prepare thermoplastic vulcanizates (TPVs) with refined morphologies and improved mechanical properties. Copolymers of atactic poly(propylene) (aPP) and 5-ethylidene-2-norbornene (ENB) (aPP-co-ENB)were prepared via metallocene catalysis. Blends of isotactic poly(propylene) (iPP) and the aPPco-ENB rubbers are immiscible in the melt, but the very high compatibility leads to a refinement of the morphology in comparison to blends based on iPP and ethylene-propylenediene (EPDM) rubber. The aPP-co-ENB-based blends show improved tensile properties, while the relatively high Tg of the rubber phase retards the elastic recovery at room temperature. Dilution of the TPVs with oil broadens the temperature window for applications by a signification reduction of the Tg and improves the elasticity of the TPVs. This study demonstrates that the lower limit of the rubber particle size of TPVs that is attainable via dynamic vulcanization of immiscible blends is in the order of 300–500 nm.

AB - Highly compatible thermoplastic/elastomer blends were used to prepare thermoplastic vulcanizates (TPVs) with refined morphologies and improved mechanical properties. Copolymers of atactic poly(propylene) (aPP) and 5-ethylidene-2-norbornene (ENB) (aPP-co-ENB)were prepared via metallocene catalysis. Blends of isotactic poly(propylene) (iPP) and the aPPco-ENB rubbers are immiscible in the melt, but the very high compatibility leads to a refinement of the morphology in comparison to blends based on iPP and ethylene-propylenediene (EPDM) rubber. The aPP-co-ENB-based blends show improved tensile properties, while the relatively high Tg of the rubber phase retards the elastic recovery at room temperature. Dilution of the TPVs with oil broadens the temperature window for applications by a signification reduction of the Tg and improves the elasticity of the TPVs. This study demonstrates that the lower limit of the rubber particle size of TPVs that is attainable via dynamic vulcanization of immiscible blends is in the order of 300–500 nm.

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DO - 10.1002/macp.200900362

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