Effect of Mixing Strategy on the Structure-Properties of the PLA/PBAT Blends Incorporated with CNC

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

doi:10.32604/jrm.2022.017003

Cited by 12 publications

(5 citation statements)

References 50 publications

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“…Figure 2A,B show an increase in the dispersed PBAT droplet size of the 90/10/2/1HPB compared to the 90/10/2. The growth of the size of the dispersed phase droplets has been reported as a sign of nanofiller localization in the dispersed phase because of the increased viscosity and elasticity of the dispersed phase 23,35 . The dispersed droplet size begins to diminish when the nanosilica concentration is increased.…”

Section: Resultsmentioning

confidence: 99%

“…The growth of the size of the dispersed phase droplets has been reported as a sign of nanofiller localization in the dispersed phase because of the increased viscosity and elasticity of the dispersed phase. 23,35 The dispersed droplet size begins to diminish when the nanosilica concentration is increased. The finer PBAT micro-domains are shown in the 90/2/2/5HPB.…”

Section: Model-fitting Methodsmentioning

confidence: 99%

“…Further, incorporating nanofillers and nanoparticles into polymer blends could also enhance their physical characteristics. In recent years, characteristics of PLA/PBAT blends containing nanoparticles such as graphene and graphene oxide (GO), 18,19 nanoclay, 20,21 carbon nanotubes (CNTs), 19,22 cellulose nanocrystals (CNC), 23,24 and nanosilica 25,26 have been the subject of several investigations.…”

Section: Introductionmentioning

confidence: 99%

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An assessment of the role of nanosilica in thermal/thermo‐oxidative degradation mechanism of poly(lactic acid)/polybutylene adipate terephthalate blend nanocomposites

Khonakdar,

Khasraghi,

Yazdanbakhsh

et al. 2024

Polymers for Advanced Techs

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As a packaging materials candidate, based on a polylactic acid/ polybutylene adipate terephthalate (PLA/PBAT) blends (90/10 and 75/25 wt/wt) containing 1, 3, and 5 phr hydrophilic (HPL) and hydrophobic (HPB) nanosilica (NS) particles in the presence of a multifunctional epoxide compatibilizer were prepared by melt mixing, in a twin‐screw extruder. Scanning electron microscopic studies confirmed a matrix‐droplet morphology with finer dispersed domains at higher NS content. Energy dispersive spectroscopy mapping also indicated uniform dispersion of NS in blends, with some agglomerates at higher content of nanoparticles. Moreover, transmission electron microscope was applied to study the impact of nanofillers' localization on the systems' morphology. It was observed that NS particles localized at the PLA‐PBAT interface. In addition, thermogravimetric analysis (TGA) was used to investigate thermal stability and thermal degradation kinetics. Data indicates that hydrophobic NS improved thermal stability. The activation energy of degradation was calculated using several techniques of data modeling, including Friedman, Flynn‐Ozawa‐Wall, and Kissinger‐Akahira‐Sunose models. Among blend nanocomposites, 75/25 blend containing 5 phr HPB NS had the maximum degradation activation energy, suggesting that this sample had the most resistance to heat degradation. The intensity of the TGA/FTIR peaks of the evolved products was found to be correlated with the activation energy. The Criado's technique was also used to investigate the changes in the thermal degradation mechanism.

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Section: Resultsmentioning

confidence: 99%

Section: Model-fitting Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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An assessment of the role of nanosilica in thermal/thermo‐oxidative degradation mechanism of poly(lactic acid)/polybutylene adipate terephthalate blend nanocomposites

Khonakdar,

Khasraghi,

Yazdanbakhsh

et al. 2024

Polymers for Advanced Techs

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show abstract

“…2b, during the subsequent heating cycle, no cold crystallization peak is observed for PLA-, PLA-, and PLA-. This absence of a cold crystallization peak could potentially stem from the creation of more fully formed crystals during the cooling phase [20]. The X c of PLA-is 33.7%.…”

Section: Resultsmentioning

confidence: 99%

Effect of molecular weight on the properties and structure of biodegradable poly-lactic acid melt-blown nonwovens

Yu,

Tian,

Wang

et al. 2024

J Polym Res

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This work has successfully prepared biodegradable poly-lactic acid (PLA) melt-blown nonwovens with varying molecular weights through the process of melt spinning. To achieve a reduced molecular weight PLA, the Lewis acid Tin (II) 2-ethyl hexanoate (Sn(Oct) 2 ) was employed for degradation. The investigation encompassed the phase morphology, rheological behavior, hydrophobicity, and crystalline characteristics of the melt-blown nonwovens. The examination of crystallization characteristics revealed that PLA molecules with lower molecular weights, comprising shorter-chain segments, exhibit enhanced mobility. Consequently, these molecules tend to crystallize more readily, resulting in a higher degree of crystallinity. Polarized optical microscopy (POM) analysis demonstrates that PLA with lower molecular weights generates the largest spherical crystal size within the same time frame. The storage modulus (G′), loss modulus (G′′), and complex viscosity |η*| were increased with the increase in molecular weight from rheological measurement. The increase in viscosity led to an increase in the distribution of melt-blown nonwoven ber diameters, and the average diameter increased from 11.86 to 21.07 μm. Furthermore, it triggers a reduction in the water contact angle (WCA), causing it to drop from 128.9° to 114.9°.

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“…Nanofillers frequently cluster within the phase that has the least interfacial tension. When nanofillers are located in the dispersed phase, the droplet size increases due to the increase in the viscoelasticity of the phase [24]. The size of the dispersed phase decreases as the nanoparticles are concentrated in the matrix [25].…”

Section: Introductionmentioning

confidence: 99%

Combined Effect of Poly(lactic acid)-Grafted Maleic Anhydride Compatibilizer and Halloysite Nanotubes on Morphology and Properties of Polylactide/Poly(3-hydroxybutyrate-co-3-hydroxyhexanoate) Blends

Mokrane,

Kaci,

Lopez-Cuesta

et al. 2023

Materials

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Given the global challenge of plastic pollution, the development of new bioplastics to replace conventional polymers has become a priority. It is therefore essential to achieve a balance in the performances of biopolymers in order to improve their commercial availability. In this topic, this study aims to investigate the morphology and properties of poly(lactic acid) (PLA)/ poly(3-hydroxybutyrate-co-3-hydroxyhexanoate) (PHBHHx) (at a ratio of 75/25 (w/w)) blends reinforced with halloysite nanotubes (HNTs) and compatibilized with poly(lactic acid)-grafted maleic anhydride (PLA-g-MA). HNTs and PLA-g-MA were added to the polymer blend at 5 and 10 wt.%, respectively, and everything was processed via melt compounding. A scanning electron microscopy (SEM) analysis shows that HNTs are preferentially localized in PHBHHx nodules rather than in the PLA matrix due to its higher wettability. When HNTs are combined with PLA-g-MA, a finer and a more homogeneous morphology is observed, resulting in a reduction in the size of PHBHHx nodules. The presence of HNTs in the polymer blend improves the impact strength from 12.7 to 20.9 kJ/mm2. Further, with the addition of PLA-g-MA to PLA/PHBHHX/HNT nanocomposites, the tensile strength, elongation at break, and impact strength all improve significantly, rising from roughly 42 MPa, 14.5%, and 20.9 kJ/mm2 to nearly 46 MPa, 18.2%, and 31.2 kJ/mm2, respectively. This is consistent with the data obtained via dynamic mechanical analysis (DMA). The thermal stability of the compatibilized blend reinforced with HNTs is also improved compared to the non-compatibilized one. Overall, this study highlights the effectiveness of combining HNTs and PLA-g-AM for the properties enhancement of PLA/PHBHHx blends.

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Effect of Mixing Strategy on the Structure-Properties of the PLA/PBAT Blends Incorporated with CNC

Cited by 12 publications

References 50 publications

An assessment of the role of nanosilica in thermal/thermo‐oxidative degradation mechanism of poly(lactic acid)/polybutylene adipate terephthalate blend nanocomposites

An assessment of the role of nanosilica in thermal/thermo‐oxidative degradation mechanism of poly(lactic acid)/polybutylene adipate terephthalate blend nanocomposites

Effect of molecular weight on the properties and structure of biodegradable poly-lactic acid melt-blown nonwovens

Combined Effect of Poly(lactic acid)-Grafted Maleic Anhydride Compatibilizer and Halloysite Nanotubes on Morphology and Properties of Polylactide/Poly(3-hydroxybutyrate-co-3-hydroxyhexanoate) Blends

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