Sandwich-Architectured Poly(lactic acid)-Graphene Composite Food Packaging Films

Kunli Goh, Jenneke K. Heising, Yang Yuan, Huseyin E. Karahan, Li Wei, Shengli Zhai, Jia Xuan Koh, Nanda M. Htin, Feimo Zhang, Rong Wang, Anthony G. Fane, Matthijs Dekker, Fariba Dehghani, Yuan Chen*

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

44 Citations (Scopus)

Abstract

Biodegradable food packaging promises a more sustainable future. Among the many different biopolymers used, poly(lactic acid) (PLA) possesses the good mechanical property and cost-effectiveness necessary of a biodegradable food packaging. However, PLA food packaging suffers from poor water vapor and oxygen barrier properties compared to many petroleum-derived ones. A key challenge is, therefore, to simultaneously enhance both the water vapor and oxygen barrier properties of the PLA food packaging. To address this issue, we design a sandwich-architectured PLA-graphene composite film, which utilizes an impermeable reduced graphene oxide (rGO) as the core barrier and commercial PLA films as the outer protective encapsulation. The synergy between the barrier and the protective encapsulation results in a significant 87.6% reduction in the water vapor permeability. At the same time, the oxygen permeability is reduced by two orders of magnitude when evaluated under both dry and humid conditions. The excellent barrier properties can be attributed to the compact lamellar microstructure and the hydrophobicity of the rGO core barrier. Mechanistic analysis shows that the large rGO lateral dimension and the small interlayer spacing between the rGO sheets have created an extensive and tortuous diffusion pathway, which is up to 1450-times the thickness of the rGO barrier. In addition, the sandwiched architecture has imbued the PLA-rGO composite film with good processability, which increases the manageability of the film and its competency to be tailored. Simulations using the PLA-rGO composite food packaging film for edible oil and potato chips also exhibit at least eight-fold extension in the shelf life of these oxygen and moisture sensitive food products. Overall, these qualities have demonstrated the high potential of a sandwich-architectured PLA-graphene composite film for food packaging applications. (Figure Presented).

Original languageEnglish
Pages (from-to)9994-10004
JournalACS Applied Materials and Interfaces
Volume8
Issue number15
DOIs
Publication statusPublished - 2016

Fingerprint

Graphite
Lactic acid
Graphene
Packaging
Oxides
Composite materials
Steam
Composite films
Water vapor
Oxygen
Encapsulation
poly(lactic acid)
Biopolymers
Petroleum
Hydrophobicity
Cost effectiveness
Oils and fats
Oxide films
Moisture
Crude oil

Keywords

  • food packaging
  • graphene oxide
  • oxygen permeability
  • poly(lactic acid)
  • shelf-life simulations
  • water vapor permeability

Cite this

Goh, Kunli ; Heising, Jenneke K. ; Yuan, Yang ; Karahan, Huseyin E. ; Wei, Li ; Zhai, Shengli ; Koh, Jia Xuan ; Htin, Nanda M. ; Zhang, Feimo ; Wang, Rong ; Fane, Anthony G. ; Dekker, Matthijs ; Dehghani, Fariba ; Chen, Yuan. / Sandwich-Architectured Poly(lactic acid)-Graphene Composite Food Packaging Films. In: ACS Applied Materials and Interfaces. 2016 ; Vol. 8, No. 15. pp. 9994-10004.
@article{a3276c2e2a2a4782abb0f224149a391b,
title = "Sandwich-Architectured Poly(lactic acid)-Graphene Composite Food Packaging Films",
abstract = "Biodegradable food packaging promises a more sustainable future. Among the many different biopolymers used, poly(lactic acid) (PLA) possesses the good mechanical property and cost-effectiveness necessary of a biodegradable food packaging. However, PLA food packaging suffers from poor water vapor and oxygen barrier properties compared to many petroleum-derived ones. A key challenge is, therefore, to simultaneously enhance both the water vapor and oxygen barrier properties of the PLA food packaging. To address this issue, we design a sandwich-architectured PLA-graphene composite film, which utilizes an impermeable reduced graphene oxide (rGO) as the core barrier and commercial PLA films as the outer protective encapsulation. The synergy between the barrier and the protective encapsulation results in a significant 87.6{\%} reduction in the water vapor permeability. At the same time, the oxygen permeability is reduced by two orders of magnitude when evaluated under both dry and humid conditions. The excellent barrier properties can be attributed to the compact lamellar microstructure and the hydrophobicity of the rGO core barrier. Mechanistic analysis shows that the large rGO lateral dimension and the small interlayer spacing between the rGO sheets have created an extensive and tortuous diffusion pathway, which is up to 1450-times the thickness of the rGO barrier. In addition, the sandwiched architecture has imbued the PLA-rGO composite film with good processability, which increases the manageability of the film and its competency to be tailored. Simulations using the PLA-rGO composite food packaging film for edible oil and potato chips also exhibit at least eight-fold extension in the shelf life of these oxygen and moisture sensitive food products. Overall, these qualities have demonstrated the high potential of a sandwich-architectured PLA-graphene composite film for food packaging applications. (Figure Presented).",
keywords = "food packaging, graphene oxide, oxygen permeability, poly(lactic acid), shelf-life simulations, water vapor permeability",
author = "Kunli Goh and Heising, {Jenneke K.} and Yang Yuan and Karahan, {Huseyin E.} and Li Wei and Shengli Zhai and Koh, {Jia Xuan} and Htin, {Nanda M.} and Feimo Zhang and Rong Wang and Fane, {Anthony G.} and Matthijs Dekker and Fariba Dehghani and Yuan Chen",
year = "2016",
doi = "10.1021/acsami.6b02498",
language = "English",
volume = "8",
pages = "9994--10004",
journal = "ACS Applied Materials and Interfaces",
issn = "1944-8244",
publisher = "American Chemical Society",
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Goh, K, Heising, JK, Yuan, Y, Karahan, HE, Wei, L, Zhai, S, Koh, JX, Htin, NM, Zhang, F, Wang, R, Fane, AG, Dekker, M, Dehghani, F & Chen, Y 2016, 'Sandwich-Architectured Poly(lactic acid)-Graphene Composite Food Packaging Films', ACS Applied Materials and Interfaces, vol. 8, no. 15, pp. 9994-10004. https://doi.org/10.1021/acsami.6b02498

Sandwich-Architectured Poly(lactic acid)-Graphene Composite Food Packaging Films. / Goh, Kunli; Heising, Jenneke K.; Yuan, Yang; Karahan, Huseyin E.; Wei, Li; Zhai, Shengli; Koh, Jia Xuan; Htin, Nanda M.; Zhang, Feimo; Wang, Rong; Fane, Anthony G.; Dekker, Matthijs; Dehghani, Fariba; Chen, Yuan.

In: ACS Applied Materials and Interfaces, Vol. 8, No. 15, 2016, p. 9994-10004.

Research output: Contribution to journalArticleAcademicpeer-review

TY - JOUR

T1 - Sandwich-Architectured Poly(lactic acid)-Graphene Composite Food Packaging Films

AU - Goh, Kunli

AU - Heising, Jenneke K.

AU - Yuan, Yang

AU - Karahan, Huseyin E.

AU - Wei, Li

AU - Zhai, Shengli

AU - Koh, Jia Xuan

AU - Htin, Nanda M.

AU - Zhang, Feimo

AU - Wang, Rong

AU - Fane, Anthony G.

AU - Dekker, Matthijs

AU - Dehghani, Fariba

AU - Chen, Yuan

PY - 2016

Y1 - 2016

N2 - Biodegradable food packaging promises a more sustainable future. Among the many different biopolymers used, poly(lactic acid) (PLA) possesses the good mechanical property and cost-effectiveness necessary of a biodegradable food packaging. However, PLA food packaging suffers from poor water vapor and oxygen barrier properties compared to many petroleum-derived ones. A key challenge is, therefore, to simultaneously enhance both the water vapor and oxygen barrier properties of the PLA food packaging. To address this issue, we design a sandwich-architectured PLA-graphene composite film, which utilizes an impermeable reduced graphene oxide (rGO) as the core barrier and commercial PLA films as the outer protective encapsulation. The synergy between the barrier and the protective encapsulation results in a significant 87.6% reduction in the water vapor permeability. At the same time, the oxygen permeability is reduced by two orders of magnitude when evaluated under both dry and humid conditions. The excellent barrier properties can be attributed to the compact lamellar microstructure and the hydrophobicity of the rGO core barrier. Mechanistic analysis shows that the large rGO lateral dimension and the small interlayer spacing between the rGO sheets have created an extensive and tortuous diffusion pathway, which is up to 1450-times the thickness of the rGO barrier. In addition, the sandwiched architecture has imbued the PLA-rGO composite film with good processability, which increases the manageability of the film and its competency to be tailored. Simulations using the PLA-rGO composite food packaging film for edible oil and potato chips also exhibit at least eight-fold extension in the shelf life of these oxygen and moisture sensitive food products. Overall, these qualities have demonstrated the high potential of a sandwich-architectured PLA-graphene composite film for food packaging applications. (Figure Presented).

AB - Biodegradable food packaging promises a more sustainable future. Among the many different biopolymers used, poly(lactic acid) (PLA) possesses the good mechanical property and cost-effectiveness necessary of a biodegradable food packaging. However, PLA food packaging suffers from poor water vapor and oxygen barrier properties compared to many petroleum-derived ones. A key challenge is, therefore, to simultaneously enhance both the water vapor and oxygen barrier properties of the PLA food packaging. To address this issue, we design a sandwich-architectured PLA-graphene composite film, which utilizes an impermeable reduced graphene oxide (rGO) as the core barrier and commercial PLA films as the outer protective encapsulation. The synergy between the barrier and the protective encapsulation results in a significant 87.6% reduction in the water vapor permeability. At the same time, the oxygen permeability is reduced by two orders of magnitude when evaluated under both dry and humid conditions. The excellent barrier properties can be attributed to the compact lamellar microstructure and the hydrophobicity of the rGO core barrier. Mechanistic analysis shows that the large rGO lateral dimension and the small interlayer spacing between the rGO sheets have created an extensive and tortuous diffusion pathway, which is up to 1450-times the thickness of the rGO barrier. In addition, the sandwiched architecture has imbued the PLA-rGO composite film with good processability, which increases the manageability of the film and its competency to be tailored. Simulations using the PLA-rGO composite food packaging film for edible oil and potato chips also exhibit at least eight-fold extension in the shelf life of these oxygen and moisture sensitive food products. Overall, these qualities have demonstrated the high potential of a sandwich-architectured PLA-graphene composite film for food packaging applications. (Figure Presented).

KW - food packaging

KW - graphene oxide

KW - oxygen permeability

KW - poly(lactic acid)

KW - shelf-life simulations

KW - water vapor permeability

U2 - 10.1021/acsami.6b02498

DO - 10.1021/acsami.6b02498

M3 - Article

VL - 8

SP - 9994

EP - 10004

JO - ACS Applied Materials and Interfaces

JF - ACS Applied Materials and Interfaces

SN - 1944-8244

IS - 15

ER -