Preparation and characterization of PLA/PBAT/CNC blend nanocomposites

Deniz Sema Sarul; Dogan Arslan; Emre Vatansever; Yusuf Kahraman; Ali Durmus; Reza Salehiyan; Mohammadreza Nofar

doi:10.1007/s00396-021-04822-9

Preparation and characterization of PLA/PBAT/CNC blend nanocomposites

Deniz Sema Sarul, Dogan Arslan, Emre Vatansever, Yusuf Kahraman, Ali Durmus, Reza Salehiyan, Mohammadreza Nofar^*

^*Corresponding author for this work

Department of Metallurgical and Materials Engineering

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

44 Citations (Scopus)

Abstract

In this study, the effect of cellulose nanocrystals (CNCs) on the properties of polylactide (PLA)/poly(butylene adipate-co-terephthalate) (PBAT) blends was investigated. Samples were prepared via (i) solution casting (SC) and (ii) combination of solution casting and melt mixing through twin-screw extruder (mTSE). Scanning electron microscopy images revealed the effect of CNC content on the droplet morphology of PBAT dispersed phase. Rheological analysis showed that 3 wt% of CNC formed a strong network in PLA by SC method. Differential scanning calorimetry results depicted the heterogeneous nucleation effect of CNC on PLA’s crystallization in samples prepared by mTSE. Dynamic mechanical analysis illustrated that CNC enhanced the modulus beyond the glass transition temperature of PLA regardless of the preparation method. The tensile and impact properties also elucidated that the existence of any possible residual solvent in blends could dramatically avoid achievement of improvements in ductility and impact properties.

Original language	English
Pages (from-to)	987-998
Number of pages	12
Journal	Colloid and Polymer Science
Volume	299
Issue number	6
DOIs	https://doi.org/10.1007/s00396-021-04822-9
Publication status	Published - Jun 2021

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Publisher Copyright:
© 2021, The Author(s), under exclusive licence to Springer-Verlag GmbH, DE part of Springer Nature.

Keywords

Blend
CNC
Morphology
Nanocomposite
PBAT
PLA
Processing
Rheology

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title = "Preparation and characterization of PLA/PBAT/CNC blend nanocomposites",

abstract = "In this study, the effect of cellulose nanocrystals (CNCs) on the properties of polylactide (PLA)/poly(butylene adipate-co-terephthalate) (PBAT) blends was investigated. Samples were prepared via (i) solution casting (SC) and (ii) combination of solution casting and melt mixing through twin-screw extruder (mTSE). Scanning electron microscopy images revealed the effect of CNC content on the droplet morphology of PBAT dispersed phase. Rheological analysis showed that 3 wt% of CNC formed a strong network in PLA by SC method. Differential scanning calorimetry results depicted the heterogeneous nucleation effect of CNC on PLA{\textquoteright}s crystallization in samples prepared by mTSE. Dynamic mechanical analysis illustrated that CNC enhanced the modulus beyond the glass transition temperature of PLA regardless of the preparation method. The tensile and impact properties also elucidated that the existence of any possible residual solvent in blends could dramatically avoid achievement of improvements in ductility and impact properties.",

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AU - Sarul, Deniz Sema

AU - Arslan, Dogan

AU - Vatansever, Emre

AU - Kahraman, Yusuf

AU - Durmus, Ali

AU - Salehiyan, Reza

AU - Nofar, Mohammadreza

PY - 2021/6

Y1 - 2021/6

N2 - In this study, the effect of cellulose nanocrystals (CNCs) on the properties of polylactide (PLA)/poly(butylene adipate-co-terephthalate) (PBAT) blends was investigated. Samples were prepared via (i) solution casting (SC) and (ii) combination of solution casting and melt mixing through twin-screw extruder (mTSE). Scanning electron microscopy images revealed the effect of CNC content on the droplet morphology of PBAT dispersed phase. Rheological analysis showed that 3 wt% of CNC formed a strong network in PLA by SC method. Differential scanning calorimetry results depicted the heterogeneous nucleation effect of CNC on PLA’s crystallization in samples prepared by mTSE. Dynamic mechanical analysis illustrated that CNC enhanced the modulus beyond the glass transition temperature of PLA regardless of the preparation method. The tensile and impact properties also elucidated that the existence of any possible residual solvent in blends could dramatically avoid achievement of improvements in ductility and impact properties.

AB - In this study, the effect of cellulose nanocrystals (CNCs) on the properties of polylactide (PLA)/poly(butylene adipate-co-terephthalate) (PBAT) blends was investigated. Samples were prepared via (i) solution casting (SC) and (ii) combination of solution casting and melt mixing through twin-screw extruder (mTSE). Scanning electron microscopy images revealed the effect of CNC content on the droplet morphology of PBAT dispersed phase. Rheological analysis showed that 3 wt% of CNC formed a strong network in PLA by SC method. Differential scanning calorimetry results depicted the heterogeneous nucleation effect of CNC on PLA’s crystallization in samples prepared by mTSE. Dynamic mechanical analysis illustrated that CNC enhanced the modulus beyond the glass transition temperature of PLA regardless of the preparation method. The tensile and impact properties also elucidated that the existence of any possible residual solvent in blends could dramatically avoid achievement of improvements in ductility and impact properties.

KW - Blend

KW - CNC

KW - Morphology

KW - Nanocomposite

KW - PBAT

KW - PLA

KW - Processing

KW - Rheology

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JO - Colloid and Polymer Science

JF - Colloid and Polymer Science

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ER -

Preparation and characterization of PLA/PBAT/CNC blend nanocomposites

Abstract

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Keywords

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