Effect of nanofillers characteristics and their selective localization on morphology development and rheological properties of melt‐processed polylactide/poly(butylene adipate‐co‐terephthalate) blend composites

Salehiyan, Reza; Nofar, Mohammadreza; Malkappa, Kuruma; Ray, Suprakas Sinha

doi:10.1002/pen.25505

Cited by 42 publications

(32 citation statements)

References 86 publications

(131 reference statements)

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“…[ 24 ] Nanofillers can enhance the thermal, mechanical, and barrier performance significantly in polymers. In this context, PBAT has been reinforced with many fillers, such as cellulose nanocrystals, [ 29 ] bark flour of plane tree, [ 30 ] starch, [ 31 ] montmorillonites, [ 32 ] layered double hydroxides, [ 33 ] agar, [ 34 ] date seed powder, [ 35 ] silica, GO, CNT, [ 36 ] and so on. Among the reported fillers, some are insoluble with poor compatibility with the polymer matrix, which might be due to lack of active functional groups that can interact with the polymer backbone.…”

Section: Introductionmentioning

confidence: 99%

Hydrophobic nanocomposites of PBAT with Cl‐fn‐POSS nanofiller as compostable food packaging films

Balaji

Venkatesan

Mugeeth

et al. 2020

Polymer Engineering & Sci

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Antibacterial nanocomposite films of poly(butylene adipate‐co‐terephthalate) (PBAT) incorporated with different weight percentage of octakis(3‐chloropropyl)octasilsesquioxane (chloropropyl functionalized POSS [Cl‐fn‐POSS]) nanofiller were prepared. The mechanical, thermal, morphological, barrier, and antimicrobial properties were examined. The mechanical properties of the nanocomposite films were enhanced by the addition of Cl‐fn‐POSS nanofiller. An optimum filler loading of 3 wt% is identified to be best suited for maximum enhancement in tensile strength (24 MPa for 3 wt% filled PBAT vs 11 MPa for neat PBAT) while a 1 wt% filler loading was adequate to double the tensile strength. The barrier properties (WVTR and oxygen transmission rate) of PBAT was improved by the presence of Cl‐fn‐POSS. A volume of 3 wt% filler loading results in 50% reduction of water permeation and 10% reduction in oxygen transmission. The thermogravimetric analyses of the nanocomposites indicated that the filler enabled the enhancement of thermal stability of PBAT. The nanocomposite films revealed antimicrobial activity with this activity increasing with increasing filler content. PBAT is compostable under suitable conditions and with a low weight percentage of filler that is largely made of silicon dioxide these nanocomposite films can find application as biodegradable food packaging material given their flexibility.

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Section: Introductionmentioning

confidence: 99%

Hydrophobic nanocomposites of PBAT with Cl‐fn‐POSS nanofiller as compostable food packaging films

Balaji

Venkatesan

Mugeeth

et al. 2020

Polymer Engineering & Sci

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“…Similarly to thermodynamics predictions, the organoclay was located at the interface of the two phases, was found to act as a barrier against the coalescence of droplets and stabilized the blend morphology under shear flow. Salehiyan et al [ 25 ] also investigated the effects of selective localization of 1 wt% of carbon nanotubes, nano-silica, nano-clays, and graphene oxides on the morphology development and rheological properties of melt-processed PLA/PBAT blend nanocomposites.…”

Section: Introductionmentioning

confidence: 99%

Morphological and Rheological Properties of PLA, PBAT, and PLA/PBAT Blend Nanocomposites Containing CNCs

et al. 2021

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Morphological and rheological properties of poly(lactic acid), PLA (semicrystalline and amorphous), and poly(butylene adipate-co-terephthalate), PBAT, and their blends (75 wt%/25 wt%; PLA/PBAT) were investigated in the presence of cellulose nanocrystals (CNCs) prepared from solution casting followed by melt mixing. For the solution casting step, the CNCs were either incorporated into the matrix, the dispersed phase, or both. The dispersion and distribution of the CNCs in the neat polymers and localization in their blends were analyzed via scanning electron microscopy (SEM) and atomic force microscopy (AFM). The highly dispersed CNCs in the solution cast nanocomposites were agglomerated after melt mixing. In the blends with 1 wt% CNCs, the nanoparticles were mostly localized on the surface of the PBAT droplets irrespective of their initial localization. The rheological behavior of the single polymer matrix nanocomposites and their blends was determined in dynamic and transient shear flow in the molten state. Upon melt mixing the complex viscosity and storage modulus of the solution cast nanocomposites decreased markedly due to re-agglomeration of the CNCs. Under shearing at 0.1 s−1, a significant droplet coalescence was observed in the neat blends, but was prevented by the presence of the CNCs at the interface in the blend nanocomposites.

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“…Rosenberger et al used electrospun PLA/PBAT/MWCNTs nanocomposite fibers prepared by the dispersion of MWCNTs in the suspension of corresponding polymer blends to fabricate an electrochemical sensor 35 . Salehiyan et al studied the morphological and rheological properties of melt‐mixed PLA/PBAT/CNT composites and concluded the co‐continuous morphology with CNT localization in PBAT 36 . Gusmão et al used melt‐spun ecovio/MWCNTs microfibers to fabricate an electrochemical sensor and analyzed them by cyclic voltammetry 37 .…”

Section: Introductionmentioning

confidence: 99%

Electrically conductive nanocomposites based on poly(lactic acid)/flexible copolyester blends with multiwalled carbon nanotubes

Dhakal

Krause

Lach

et al. 2021

J of Applied Polymer Sci

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Nanocomposites of poly(lactic acid) (PLA)/poly(butylene adipate‐co‐terephthalate) (PBAT) blends with multiwalled carbon nanotubes (MWCNTs) were prepared and their morphology, as well as electrical, mechanical, and thermal properties were investigated. The motivation of this work is to prepare electrically conductive and environmentally benign polymer nanocomposites using biodegradable PLA/PBAT blends. The composites were characterized by Fourier transform infrared (FTIR) spectroscopy, scanning and transmission electron microscopy, tensile and microindentation tests, and thermogravimetric analyses (TGA). Volume resistivity and resistance to tensile deformation were measured for electrical characterization. The nanocomposites films were integrated into an electrical circuit to confirm their electrical conductivity. The FTIR spectra revealed the physical mixing between the polymer matrix and the filler. TEM micrographs suggested selective localization of MWCNTs in the PBAT phase with partial agglomeration forming a co‐continuous morphology. TGA and derivative thermogravimetric curves suggested the overall decreasing thermal stability of composites than pure polymer blends regardless of the effects on individual blend components. A relatively low electrical percolation threshold (around 1 wt% of the fillers) compared to the literature works was achieved. Increasing electrical resistance of nanocomposites upon tensile deformation suggested their possibility of piezoresistive properties. Furthermore, the overall mechanical performance (i.e., elastic modulus, tensile strength, and hardness) of the materials was found to improve with increasing filler content.

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Effect of nanofillers characteristics and their selective localization on morphology development and rheological properties of melt‐processed polylactide/poly(butylene adipate‐co‐terephthalate) blend composites

Cited by 42 publications

References 86 publications

Hydrophobic nanocomposites of PBAT with Cl‐fn‐POSS nanofiller as compostable food packaging films

Hydrophobic nanocomposites of PBAT with Cl‐fn‐POSS nanofiller as compostable food packaging films

Morphological and Rheological Properties of PLA, PBAT, and PLA/PBAT Blend Nanocomposites Containing CNCs

Electrically conductive nanocomposites based on poly(lactic acid)/flexible copolyester blends with multiwalled carbon nanotubes

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