Effect of shear rate and pressure on the crystallization of PP nanocomposites and PP/PET polymer blend nanocomposites

Leire Sangroniz; Martin van Drongelen; Ruth Cardinaels; Antxon Santamaria; Gerrit Peters; Alejandro Müller

doi:10.1016/j.polymer.2019.121950

Effect of shear rate and pressure on the crystallization of PP nanocomposites and PP/PET polymer blend nanocomposites

Leire Sangroniz
, Martin van Drongelen
, Ruth Cardinaels
, Antxon Santamaria
, Gerrit Peters (Corresponding author)
, Alejandro Müller (Corresponding author)

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

24 Citations (Scopus)

383 Downloads (Pure)

Abstract

The effect of shear flow on the crystallization of homopolymers has been widely studied, however more complex systems such as nanocomposites or polymer blends nanocomposites (PBNANOs) have received less attention. In this work, the effect of pressure and shear flow on the crystallization process of polypropylene-based nanocomposites and polypropylene/polyethylene terephthalate PBNANOs have been studied employing dilatometry (PVT), X-ray, rheology, and DSC. The material systems used allow studying the effect of shear in the presence of nanoparticles that do not have a nucleating effect, as well as the combined effect of shear and nucleating nanoparticles. Nucleating nanoparticles increase the crystallization temperature more significantly because of the combined effect of nucleation and flow. For carbon nanotubes, nucleation is more pronounced due to stronger interactions with PP chains, as demonstrated by rheological measurements. For PBNANOs the effect of shear on crystallization is more significant due to the higher amount of available surfaces.

Original language	English
Article number	121950
Number of pages	14
Journal	Polymer
Volume	186
Early online date	31 Oct 2019
DOIs	https://doi.org/10.1016/j.polymer.2019.121950
Publication status	Published - 9 Jan 2020

Funding

Financial support from “ Teknologia eta Berrikuntza Sarea 2017 ” (GFA/DFG) and Basque Government (GIC IT-309-19) is acknowledged. Projects POCTEFA REVALPET EFA064/15 (EU Interreg) and MINECO MAT2017-83014-C2-1-P are also gratefully acknowledged. L. S. thanks Spanish Ministry (FPU) for her PhD grant and the grant to do the internship in Eindhoven University of Technology for 3 months.

Funders	Funder number
Ministerio de Ciencia e Innovación	FPU
Eindhoven University of Technology
Ministerio de Economía y Competitividad	MAT2017-83014-C2-1-P

Keywords

Crystallization
Nanocomposites
Polymer blend nanocomposites
Pressure
Shear flow

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10.1016/j.polymer.2019.121950

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title = "Effect of shear rate and pressure on the crystallization of PP nanocomposites and PP/PET polymer blend nanocomposites",

abstract = "The effect of shear flow on the crystallization of homopolymers has been widely studied, however more complex systems such as nanocomposites or polymer blends nanocomposites (PBNANOs) have received less attention. In this work, the effect of pressure and shear flow on the crystallization process of polypropylene-based nanocomposites and polypropylene/polyethylene terephthalate PBNANOs have been studied employing dilatometry (PVT), X-ray, rheology, and DSC. The material systems used allow studying the effect of shear in the presence of nanoparticles that do not have a nucleating effect, as well as the combined effect of shear and nucleating nanoparticles. Nucleating nanoparticles increase the crystallization temperature more significantly because of the combined effect of nucleation and flow. For carbon nanotubes, nucleation is more pronounced due to stronger interactions with PP chains, as demonstrated by rheological measurements. For PBNANOs the effect of shear on crystallization is more significant due to the higher amount of available surfaces.",

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AU - Sangroniz, Leire

AU - van Drongelen, Martin

AU - Cardinaels, Ruth

AU - Santamaria, Antxon

AU - Peters, Gerrit

AU - Müller, Alejandro

PY - 2020/1/9

Y1 - 2020/1/9

N2 - The effect of shear flow on the crystallization of homopolymers has been widely studied, however more complex systems such as nanocomposites or polymer blends nanocomposites (PBNANOs) have received less attention. In this work, the effect of pressure and shear flow on the crystallization process of polypropylene-based nanocomposites and polypropylene/polyethylene terephthalate PBNANOs have been studied employing dilatometry (PVT), X-ray, rheology, and DSC. The material systems used allow studying the effect of shear in the presence of nanoparticles that do not have a nucleating effect, as well as the combined effect of shear and nucleating nanoparticles. Nucleating nanoparticles increase the crystallization temperature more significantly because of the combined effect of nucleation and flow. For carbon nanotubes, nucleation is more pronounced due to stronger interactions with PP chains, as demonstrated by rheological measurements. For PBNANOs the effect of shear on crystallization is more significant due to the higher amount of available surfaces.

AB - The effect of shear flow on the crystallization of homopolymers has been widely studied, however more complex systems such as nanocomposites or polymer blends nanocomposites (PBNANOs) have received less attention. In this work, the effect of pressure and shear flow on the crystallization process of polypropylene-based nanocomposites and polypropylene/polyethylene terephthalate PBNANOs have been studied employing dilatometry (PVT), X-ray, rheology, and DSC. The material systems used allow studying the effect of shear in the presence of nanoparticles that do not have a nucleating effect, as well as the combined effect of shear and nucleating nanoparticles. Nucleating nanoparticles increase the crystallization temperature more significantly because of the combined effect of nucleation and flow. For carbon nanotubes, nucleation is more pronounced due to stronger interactions with PP chains, as demonstrated by rheological measurements. For PBNANOs the effect of shear on crystallization is more significant due to the higher amount of available surfaces.

KW - Crystallization

KW - Nanocomposites

KW - Polymer blend nanocomposites

KW - Pressure

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Effect of shear rate and pressure on the crystallization of PP nanocomposites and PP/PET polymer blend nanocomposites

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