Epoxy functionalized poly(lactide) reactive modifier for blown film applications

Jeff Schneider, Xiangke Shi, Shilpa Manjure, Daniel Gravier, Ramani Narayan

Research output: Contribution to journalArticle

  • 4 Citations

Abstract

Epoxy functionalized poly(lactide) (EF-PLA) was synthesized by reacting PLA with a multifunctional epoxy polymer (MEP) using reactive extrusion processing. These polymers can function as a rheology modifier for PLA and a compatibilizer for other biopolyesters in blown film and foam applications. Model compound studies show that the epoxy functional group on the MEP reacts selectively with the carboxylic acid chain-ends of PLA at processing temperatures below 200°C. An EF-PLA containing up to 10% MEP was prepared without gel formation and reactively extruded with neat PLA to obtain three different product formulations containing MEP (0.25, 0.5, and 1.0%). These products showed significantly enhanced rheological properties compared to what has been reported by other groups and is currently used in the PLA blown film industry, the blending of MEP with PLA in a single step. These benefits are a result of how the MEP gets distributed in the material, and can lead to improved properties even at lower MEP concentrations. Our new materials showed significant strain hardening rheological behavior demonstrating that they can be readily blown into films and foams. A statistical simulation was developed to provide a fundamental understanding of the reaction as well as provide information on the molecular weight characteristics and reactivity of the EF-PLA. The EF-PLA molecule shows good potential for use as a rheology modifier and compatibilizer.

LanguageEnglish (US)
Article number42243
JournalJournal of Applied Polymer Science
Volume132
Issue number28
DOIs
StatePublished - Jul 1 2015

Profile

Polymers
Compatibilizers
Rheology
Foams
Functional polymers
Processing
Carboxylic Acids
poly(lactide)
Carboxylic acids
Strain hardening
Functional groups
Extrusion
Gels
Molecular weight
Molecules
Industry
Temperature

Keywords

  • biopolymers and renewable polymers
  • extrusion
  • functionalization of polymers
  • structure-property relations
  • viscosity and viscoelasticity

ASJC Scopus subject areas

  • Materials Chemistry
  • Polymers and Plastics
  • Surfaces, Coatings and Films
  • Chemistry(all)

Cite this

Epoxy functionalized poly(lactide) reactive modifier for blown film applications. / Schneider, Jeff; Shi, Xiangke; Manjure, Shilpa; Gravier, Daniel; Narayan, Ramani.

In: Journal of Applied Polymer Science, Vol. 132, No. 28, 42243, 01.07.2015.

Research output: Contribution to journalArticle

Schneider, Jeff ; Shi, Xiangke ; Manjure, Shilpa ; Gravier, Daniel ; Narayan, Ramani. / Epoxy functionalized poly(lactide) reactive modifier for blown film applications. In: Journal of Applied Polymer Science. 2015 ; Vol. 132, No. 28.
@article{73902570e8de4a8fb57926b402c08aa3,
title = "Epoxy functionalized poly(lactide) reactive modifier for blown film applications",
abstract = "Epoxy functionalized poly(lactide) (EF-PLA) was synthesized by reacting PLA with a multifunctional epoxy polymer (MEP) using reactive extrusion processing. These polymers can function as a rheology modifier for PLA and a compatibilizer for other biopolyesters in blown film and foam applications. Model compound studies show that the epoxy functional group on the MEP reacts selectively with the carboxylic acid chain-ends of PLA at processing temperatures below 200°C. An EF-PLA containing up to 10{\%} MEP was prepared without gel formation and reactively extruded with neat PLA to obtain three different product formulations containing MEP (0.25, 0.5, and 1.0{\%}). These products showed significantly enhanced rheological properties compared to what has been reported by other groups and is currently used in the PLA blown film industry, the blending of MEP with PLA in a single step. These benefits are a result of how the MEP gets distributed in the material, and can lead to improved properties even at lower MEP concentrations. Our new materials showed significant strain hardening rheological behavior demonstrating that they can be readily blown into films and foams. A statistical simulation was developed to provide a fundamental understanding of the reaction as well as provide information on the molecular weight characteristics and reactivity of the EF-PLA. The EF-PLA molecule shows good potential for use as a rheology modifier and compatibilizer.",
keywords = "biopolymers and renewable polymers, extrusion, functionalization of polymers, structure-property relations, viscosity and viscoelasticity",
author = "Jeff Schneider and Xiangke Shi and Shilpa Manjure and Daniel Gravier and Ramani Narayan",
year = "2015",
month = "7",
day = "1",
doi = "10.1002/app.42243",
language = "English (US)",
volume = "132",
journal = "Journal of Applied Polymer Science",
issn = "0021-8995",
publisher = "John Wiley and Sons Inc.",
number = "28",

}

TY - JOUR

T1 - Epoxy functionalized poly(lactide) reactive modifier for blown film applications

AU - Schneider,Jeff

AU - Shi,Xiangke

AU - Manjure,Shilpa

AU - Gravier,Daniel

AU - Narayan,Ramani

PY - 2015/7/1

Y1 - 2015/7/1

N2 - Epoxy functionalized poly(lactide) (EF-PLA) was synthesized by reacting PLA with a multifunctional epoxy polymer (MEP) using reactive extrusion processing. These polymers can function as a rheology modifier for PLA and a compatibilizer for other biopolyesters in blown film and foam applications. Model compound studies show that the epoxy functional group on the MEP reacts selectively with the carboxylic acid chain-ends of PLA at processing temperatures below 200°C. An EF-PLA containing up to 10% MEP was prepared without gel formation and reactively extruded with neat PLA to obtain three different product formulations containing MEP (0.25, 0.5, and 1.0%). These products showed significantly enhanced rheological properties compared to what has been reported by other groups and is currently used in the PLA blown film industry, the blending of MEP with PLA in a single step. These benefits are a result of how the MEP gets distributed in the material, and can lead to improved properties even at lower MEP concentrations. Our new materials showed significant strain hardening rheological behavior demonstrating that they can be readily blown into films and foams. A statistical simulation was developed to provide a fundamental understanding of the reaction as well as provide information on the molecular weight characteristics and reactivity of the EF-PLA. The EF-PLA molecule shows good potential for use as a rheology modifier and compatibilizer.

AB - Epoxy functionalized poly(lactide) (EF-PLA) was synthesized by reacting PLA with a multifunctional epoxy polymer (MEP) using reactive extrusion processing. These polymers can function as a rheology modifier for PLA and a compatibilizer for other biopolyesters in blown film and foam applications. Model compound studies show that the epoxy functional group on the MEP reacts selectively with the carboxylic acid chain-ends of PLA at processing temperatures below 200°C. An EF-PLA containing up to 10% MEP was prepared without gel formation and reactively extruded with neat PLA to obtain three different product formulations containing MEP (0.25, 0.5, and 1.0%). These products showed significantly enhanced rheological properties compared to what has been reported by other groups and is currently used in the PLA blown film industry, the blending of MEP with PLA in a single step. These benefits are a result of how the MEP gets distributed in the material, and can lead to improved properties even at lower MEP concentrations. Our new materials showed significant strain hardening rheological behavior demonstrating that they can be readily blown into films and foams. A statistical simulation was developed to provide a fundamental understanding of the reaction as well as provide information on the molecular weight characteristics and reactivity of the EF-PLA. The EF-PLA molecule shows good potential for use as a rheology modifier and compatibilizer.

KW - biopolymers and renewable polymers

KW - extrusion

KW - functionalization of polymers

KW - structure-property relations

KW - viscosity and viscoelasticity

UR - http://www.scopus.com/inward/record.url?scp=84928365129&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84928365129&partnerID=8YFLogxK

U2 - 10.1002/app.42243

DO - 10.1002/app.42243

M3 - Article

VL - 132

JO - Journal of Applied Polymer Science

T2 - Journal of Applied Polymer Science

JF - Journal of Applied Polymer Science

SN - 0021-8995

IS - 28

M1 - 42243

ER -