Reactive modification and compatibilization of poly(lactide) and poly(butylene adipate-co-terephthalate) blends with epoxy functionalized-poly(lactide) for blown film applications

Jeff Schneider, Shilpa Manjure, Ramani Narayan

Research output: Contribution to journalArticle

  • 7 Citations

Abstract

Biodegradable blown films comprising of poly(lactide) (PLA) and poly(butylene adipate-co-terephthalate) (PBAT) were produced using epoxy functionalized-poly(lactide) (EF-PLA) reactive modifiers for rheological enhancement and compatibilization. The epoxy groups on the EF-PLA modifiers react with PBAT forming an in situ copolymer that localizes at the blend interphase resulting in compatibilization of the polymer blend components. The EF-PLA modified polymer blends have improved melt strength and the resultant films showed better processability as seen by increased bubbled stability. This allowed for blown films with higher PLA content (70%) compared to the unmodified control films (40%). The static charge build-up typically experienced with PLA film blowing was decreased with the inclusion of EF-PLA yielding films with better slip and softness. The compatibilization effect of the EF-PLA modifiers resulted in significant improvement in mechanical properties. For example, dart test performance was up to four times higher than the control, especially at higher PLA concentrations. Therefore, the rheological enhancement and compatibilization effects of the EF-PLA reactive modifiers make them ideally suited to create high PLA content films.

LanguageEnglish (US)
JournalJournal of Applied Polymer Science
DOIs
StateAccepted/In press - 2016

Profile

Compatibilizers
Polymer blends
Textile blends
Blow molding
butylene glycol adipic acid polyester
terephthalic acid
poly(lactide)
Copolymers
Mechanical properties

Keywords

  • Biodegradable
  • Biopolymers and renewable polymers
  • Compatibilization
  • Films
  • Functionalization of polymers

ASJC Scopus subject areas

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

Cite this

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title = "Reactive modification and compatibilization of poly(lactide) and poly(butylene adipate-co-terephthalate) blends with epoxy functionalized-poly(lactide) for blown film applications",
abstract = "Biodegradable blown films comprising of poly(lactide) (PLA) and poly(butylene adipate-co-terephthalate) (PBAT) were produced using epoxy functionalized-poly(lactide) (EF-PLA) reactive modifiers for rheological enhancement and compatibilization. The epoxy groups on the EF-PLA modifiers react with PBAT forming an in situ copolymer that localizes at the blend interphase resulting in compatibilization of the polymer blend components. The EF-PLA modified polymer blends have improved melt strength and the resultant films showed better processability as seen by increased bubbled stability. This allowed for blown films with higher PLA content (70{\%}) compared to the unmodified control films (40{\%}). The static charge build-up typically experienced with PLA film blowing was decreased with the inclusion of EF-PLA yielding films with better slip and softness. The compatibilization effect of the EF-PLA modifiers resulted in significant improvement in mechanical properties. For example, dart test performance was up to four times higher than the control, especially at higher PLA concentrations. Therefore, the rheological enhancement and compatibilization effects of the EF-PLA reactive modifiers make them ideally suited to create high PLA content films.",
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N2 - Biodegradable blown films comprising of poly(lactide) (PLA) and poly(butylene adipate-co-terephthalate) (PBAT) were produced using epoxy functionalized-poly(lactide) (EF-PLA) reactive modifiers for rheological enhancement and compatibilization. The epoxy groups on the EF-PLA modifiers react with PBAT forming an in situ copolymer that localizes at the blend interphase resulting in compatibilization of the polymer blend components. The EF-PLA modified polymer blends have improved melt strength and the resultant films showed better processability as seen by increased bubbled stability. This allowed for blown films with higher PLA content (70%) compared to the unmodified control films (40%). The static charge build-up typically experienced with PLA film blowing was decreased with the inclusion of EF-PLA yielding films with better slip and softness. The compatibilization effect of the EF-PLA modifiers resulted in significant improvement in mechanical properties. For example, dart test performance was up to four times higher than the control, especially at higher PLA concentrations. Therefore, the rheological enhancement and compatibilization effects of the EF-PLA reactive modifiers make them ideally suited to create high PLA content films.

AB - Biodegradable blown films comprising of poly(lactide) (PLA) and poly(butylene adipate-co-terephthalate) (PBAT) were produced using epoxy functionalized-poly(lactide) (EF-PLA) reactive modifiers for rheological enhancement and compatibilization. The epoxy groups on the EF-PLA modifiers react with PBAT forming an in situ copolymer that localizes at the blend interphase resulting in compatibilization of the polymer blend components. The EF-PLA modified polymer blends have improved melt strength and the resultant films showed better processability as seen by increased bubbled stability. This allowed for blown films with higher PLA content (70%) compared to the unmodified control films (40%). The static charge build-up typically experienced with PLA film blowing was decreased with the inclusion of EF-PLA yielding films with better slip and softness. The compatibilization effect of the EF-PLA modifiers resulted in significant improvement in mechanical properties. For example, dart test performance was up to four times higher than the control, especially at higher PLA concentrations. Therefore, the rheological enhancement and compatibilization effects of the EF-PLA reactive modifiers make them ideally suited to create high PLA content films.

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