Improved polypropylene thermoformability through polyethylene layering

Laryssa Meyer; Alex Jordan; Kyungtae Kim; Bongjoon Lee; Frank S. Bates; Chris Macosko; Ehsan Behzedfar; Olivier Lhost

Improved polypropylene thermoformability through polyethylene layering

Laryssa Meyer, Alex Jordan, Kyungtae Kim, Bongjoon Lee, Frank S. Bates, Chris Macosko, Ehsan Behzedfar, Olivier Lhost

Chemical Engineering and Materials Science

Research output: Contribution to conference › Paper › peer-review

Abstract

While the flow forces governing primary melt-based polymer processing techniques, such as extrusion and injection molding, have been extensively studied, characterization of forces in secondary processes such as thermoforming is limited. In this work we utilize multilayer coextrusion to create an extruded film with 100s of alternating linear low density polyethylene (LLDPE) and isotactic polypropylene (iPP) layers; and by extension, 100s of interfaces. The combination of LLDPE, iPP, and these interfaces decreases the elastic storage modulus (E') and broadens the rubbery plateau observed via dynamic mechanical analysis (DMA). The broadening of the rubber plateau is correlated with an observed improvement in LLDPE/iPP multilayer thermoformability compared to the homopolymer LLDPE and iPP films.

Original language	English (US)
State	Published - 2021
Event	2021 SPE Annual Technical Conference, ANTEC 2021 - Virtual, Online Duration: May 10 2021 → May 21 2021

Conference

Conference	2021 SPE Annual Technical Conference, ANTEC 2021
City	Virtual, Online
Period	5/10/21 → 5/21/21

Bibliographical note

Funding Information:
This research was supported by a grant from Total S. A. with partial support by the Industrial Partnership for Research in Interfacial & Materials Engineering (IPRIME). Polymers were graciously provided by Total S. A. and ExxonMobil Corporation.

Publisher Copyright:
© 2021 Society of Plastics Engineers. All rights reserved.

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title = "Improved polypropylene thermoformability through polyethylene layering",

abstract = "While the flow forces governing primary melt-based polymer processing techniques, such as extrusion and injection molding, have been extensively studied, characterization of forces in secondary processes such as thermoforming is limited. In this work we utilize multilayer coextrusion to create an extruded film with 100s of alternating linear low density polyethylene (LLDPE) and isotactic polypropylene (iPP) layers; and by extension, 100s of interfaces. The combination of LLDPE, iPP, and these interfaces decreases the elastic storage modulus (E') and broadens the rubbery plateau observed via dynamic mechanical analysis (DMA). The broadening of the rubber plateau is correlated with an observed improvement in LLDPE/iPP multilayer thermoformability compared to the homopolymer LLDPE and iPP films.",

author = "Laryssa Meyer and Alex Jordan and Kyungtae Kim and Bongjoon Lee and Bates, {Frank S.} and Chris Macosko and Ehsan Behzedfar and Olivier Lhost",

note = "Funding Information: This research was supported by a grant from Total S. A. with partial support by the Industrial Partnership for Research in Interfacial & Materials Engineering (IPRIME). Polymers were graciously provided by Total S. A. and ExxonMobil Corporation. Publisher Copyright: {\textcopyright} 2021 Society of Plastics Engineers. All rights reserved.; 2021 SPE Annual Technical Conference, ANTEC 2021 ; Conference date: 10-05-2021 Through 21-05-2021",

year = "2021",

language = "English (US)",

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TY - CONF

T1 - Improved polypropylene thermoformability through polyethylene layering

AU - Meyer, Laryssa

AU - Jordan, Alex

AU - Kim, Kyungtae

AU - Lee, Bongjoon

AU - Bates, Frank S.

AU - Macosko, Chris

AU - Behzedfar, Ehsan

AU - Lhost, Olivier

N1 - Funding Information: This research was supported by a grant from Total S. A. with partial support by the Industrial Partnership for Research in Interfacial & Materials Engineering (IPRIME). Polymers were graciously provided by Total S. A. and ExxonMobil Corporation. Publisher Copyright: © 2021 Society of Plastics Engineers. All rights reserved.

PY - 2021

Y1 - 2021

N2 - While the flow forces governing primary melt-based polymer processing techniques, such as extrusion and injection molding, have been extensively studied, characterization of forces in secondary processes such as thermoforming is limited. In this work we utilize multilayer coextrusion to create an extruded film with 100s of alternating linear low density polyethylene (LLDPE) and isotactic polypropylene (iPP) layers; and by extension, 100s of interfaces. The combination of LLDPE, iPP, and these interfaces decreases the elastic storage modulus (E') and broadens the rubbery plateau observed via dynamic mechanical analysis (DMA). The broadening of the rubber plateau is correlated with an observed improvement in LLDPE/iPP multilayer thermoformability compared to the homopolymer LLDPE and iPP films.

AB - While the flow forces governing primary melt-based polymer processing techniques, such as extrusion and injection molding, have been extensively studied, characterization of forces in secondary processes such as thermoforming is limited. In this work we utilize multilayer coextrusion to create an extruded film with 100s of alternating linear low density polyethylene (LLDPE) and isotactic polypropylene (iPP) layers; and by extension, 100s of interfaces. The combination of LLDPE, iPP, and these interfaces decreases the elastic storage modulus (E') and broadens the rubbery plateau observed via dynamic mechanical analysis (DMA). The broadening of the rubber plateau is correlated with an observed improvement in LLDPE/iPP multilayer thermoformability compared to the homopolymer LLDPE and iPP films.

UR - http://www.scopus.com/inward/record.url?scp=85111557423&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85111557423&partnerID=8YFLogxK

M3 - Paper

AN - SCOPUS:85111557423

T2 - 2021 SPE Annual Technical Conference, ANTEC 2021

Y2 - 10 May 2021 through 21 May 2021

ER -

Improved polypropylene thermoformability through polyethylene layering

Abstract

Conference

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