Development and characterisation of packaging film from Napier cellulose nanowhisker reinforced polylactic acid (PLA) bionanocomposites

Sucinda, E. F.; Majid, M.S. Abdul; Ridzuan, M.J.M.; Cheng, E. M.; Alshahrani, Hassan; Normahira, M.

doi:10.1016/j.ijbiomac.2021.07.069

Cited by 58 publications

(35 citation statements)

References 26 publications

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“…The FTIR spectra of the prepared films are presented in Figure 3, which includes the spectra of some selected compositions after baseline correction, normalization to the most intense band, and vertical shifting. As already observed in our previous works [26], neat PLA shows the stretching of C-H at 2950-3000 cm −1 , C=O (1751 cm −1 ), and C-O-C (1180 cm −1 ) [41], as well as the contributions of amorphous and crystalline regions, found at 869 and 755 cm −1 , respectively [42][43][44]. PDeF shows all bands of PAFs, i.e., the symmetrical and asymmetrical stretching of the furan ring (3119 and 3152 cm −1 ), the symmetrical and asymmetrical C-H stretching of the methylene groups of the alkyl chain (2920 and 2850 cm −1 ), the signals of the furan C=C (1574 and 1530 cm −1 ) [45,46], the ester C=O stretching (1717 cm −1 ) [47,48], the furan ring breathing (1018 cm −1 ) and bending (966, 820, and 772 cm −1 ).…”

Section: Resultssupporting

confidence: 85%

Improving the Thermomechanical Properties of Poly(lactic acid) via Reduced Graphene Oxide and Bioderived Poly(decamethylene 2,5-furandicarboxylate)

et al. 2022

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Polylactide (PLA) is the most widely used biopolymer, but its poor ductility and scarce gas barrier properties limit its applications in the packaging field. In this work, for the first time, the properties of PLA solvent-cast films are improved by the addition of a second biopolymer, i.e., poly(decamethylene 2,5-furandicarboxylate) (PDeF), added in a weight fraction of 10 wt%, and a carbon-based nanofiller, i.e., reduced graphene oxide (rGO), added in concentrations of 0.25–2 phr. PLA and PDeF are immiscible, as evidenced by scanning electron microscopy (SEM) and Fourier-transform infrared (FTIR) spectroscopy, with PDeF spheroidal domains showing poor adhesion to PLA. The addition of 0.25 phr of rGO, which preferentially segregates in the PDeF domains, makes them smaller and considerably rougher and improves the interfacial interaction. Differential scanning calorimetry (DSC) confirms the immiscibility of the two polymer phases and highlights that rGO enhances the crystallinity of both polymer phases (especially of PDeF). Thermogravimetric analysis (TGA) highlights the positive impact of rGO and PDeF on the thermal degradation resistance of PLA. Quasi-static tensile tests evidence that adding 10 wt% of PDeF and a small fraction of rGO (0.25 phr) to PLA considerably enhances the strain at break, which raises from 5.3% of neat PLA to 10.0% by adding 10 wt% of PDeF, up to 75.8% by adding also 0.25 phr of rGO, thereby highlighting the compatibilizing role of rGO on this blend. On the other hand, a further increase in rGO concentration decreases the strain at break due to agglomeration but enhances the mechanical stiffness and strength up to an rGO concentration of 1 phr. Overall, these results highlight the positive and synergistic contribution of PDeF and rGO in enhancing the thermomechanical properties of PLA, and the resulting nanocomposites are promising for packaging applications.

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Section: Resultssupporting

confidence: 85%

Improving the Thermomechanical Properties of Poly(lactic acid) via Reduced Graphene Oxide and Bioderived Poly(decamethylene 2,5-furandicarboxylate)

et al. 2022

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“…e onset weight loss temperature of the nanocomposites continued to decrease with the addition of the mNCC. e nanocomposite's lower thermal degradation performance was mostly related to the NCC's low thermal stability [51,52]. While the PLA nanocomposites demonstrated a lower thermal decomposition capability than pure PLA, their initial weight loss temperature remained above 300 °C, which meets the requirements for a wide variety of applications.…”

Section: 2mentioning

confidence: 93%

Preparation and Supercritical CO2 Foaming of Modified Nanocrystalline Cellulose Reinforced Polylactic Acid Bionanocomposites

Chen

Zhang

Wang

et al. 2022

Advances in Materials Science and Engineering

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The solution casting method was used to prepare polylactic acid/modified nanocrystalline cellulose (PLA/mNCC) composites, and the effects of the mNCC content on the morphology, thermal characteristics, and rheological properties of the PLA nanocomposite were examined. The PLA microcellular foaming nanocomposite was prepared using supercritical CO2 foaming. Furthermore, the foaming conditions were optimized, and the effect of NCC surface modification, as well as the content and interfacial force of nanoparticles, on the foaming efficiency and cell pattern of composites was examined. The results suggested that a sufficient number of nanoparticles increased the nucleation site for foaming and played a vital role in heterogeneous nucleation in the foaming system. An ideal microcellular foaming material with an average cell diameter of 6.97 μm and a cell density of 6.05 × 109 cells/cm3 was prepared when the foaming temperature was 110°C, the foaming pressure was 18 MPa, the incubation period was 2 h, and the mNCC content was 6%.

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“…Five samples for the same component were weighed to calculate its average value. The formula for calculating the water absorption rate of the sample is shown in Formula (2), which is as follows:

where W is the water absorption percentage (%); m 1 (g) and m 2 represent the quality of the sample before and after immersion, respectively [ 50 ].…”

Section: Methodsmentioning

confidence: 99%

Comparison of Properties of Poly(Lactic Acid) Composites Prepared from Different Components of Corn Straw Fiber

Wang

Sun

et al. 2022

IJMS

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In recent years, under the pressure of resource shortage and white pollution, the development and utilization of biodegradable wood-plastic composites (WPC) has become one of the hot spots for scholars’ research. Here, corn straw fiber (CSF) was chosen to reinforce a poly(lactic acid) (PLA) matrix with a mass ratio of 3:7, and the CSF/PLA composites were obtained by melt mixing. The results showed that the mechanical properties of the corn straw fiber core (CSFC) and corn straw fiber skin (CSFS) loaded PLA composites were stronger than those of the CSFS/PLA composites when the particle size of CSF was low. The tensile strength and bending strength of CSFS/CSFC/PLA are 54.08 MPa and 87.24 MPa, respectively, and the elongation at break is 4.60%. After soaking for 8 hours, the water absorption of CSF/PLA composite reached saturation. When the particle size of CSF is above 80 mesh, the saturated water absorption of the material is kept below 7%, and CSF/PLA composite has good hydrophobicity, which is mainly related to the interfacial compatibility between PLA and CSF. By observing the microstructure of the cross section of the CSF/PLA composite, the research found that the smaller the particle size of CSF, the smoother the cross section of the composite and the more unified the dispersion of CSF in PLA. Therefore, exploring the composites formed by different components of CSF and PLA can not only expand the application range of PLA, but also enhance the application value of CSF in the field of composites.

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Development and characterisation of packaging film from Napier cellulose nanowhisker reinforced polylactic acid (PLA) bionanocomposites

Cited by 58 publications

References 26 publications

Improving the Thermomechanical Properties of Poly(lactic acid) via Reduced Graphene Oxide and Bioderived Poly(decamethylene 2,5-furandicarboxylate)

Improving the Thermomechanical Properties of Poly(lactic acid) via Reduced Graphene Oxide and Bioderived Poly(decamethylene 2,5-furandicarboxylate)

Preparation and Supercritical CO2 Foaming of Modified Nanocrystalline Cellulose Reinforced Polylactic Acid Bionanocomposites

Comparison of Properties of Poly(Lactic Acid) Composites Prepared from Different Components of Corn Straw Fiber

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