Lignocellulose nanofiber/polylactic acid (LCNF/PLA) composite with internal lignin for enhanced performance as 3D printable filament

Zhang, Qing; Ma, Lisha; Zhang, Xiya; Zhang, Lili; Wang, Zhiguo

doi:10.1016/j.indcrop.2022.114590

Cited by 28 publications

(8 citation statements)

References 42 publications

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“…This occurred as a result of bre-bre interaction (interface), thereby reducing the strength of the material. A similar nding was reported by Zhang et al (2022) [73].…”

Section: Scanning Electron Microscope Image Of the Modi Ed Polymer Blendsupporting

confidence: 90%

Effect of Jute Nanofibre on the Properties of Waste Polypropylene/Polystyrene /Natural Rubber (wPP/PS/NR) Ter- Polymer Blend

Adamu

Bello

Shehu

et al. 2023

Preprint

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In this work, the effect of jute nanofibre on ter-blend of waste polypropylene (wPP), polystyrene (PS), and natural rubber (NR) nanocomposite was studied. The nanofibre was produced from jute fibre via a ball milling process after freezing with liquid nitrogen. The produced nanofibre was analyzed using Fourier Transform Infrared Spectroscopy (FTIR) and Dynamic Light Scattering (DLS). The ter-blend was modified with the nanofibre at different weight percentages (2–10 wt%) at 2wt% intervals. The modified polymer blends were characterized for mechanical, thermal, physical and morphological properties. FTIR revealed the removal of hemicellulose, lignin and other impurities from the jute fibre, due to the change in wave numbers observed. The DLS analysis showed that an average of 85.54 nm size distribution by the intensity and Polydispersity Index (PDI) of 0.353 was achieved. Also, the thermogravimetry analysis (TGA) showed that jute nanofibres proved to be thermally stable up to 282 oC. Polymer blends modified with 2 wt% nanofibres had the highest average impact and tensile strengths. While, the percentage water absorption (%WA), showed that sp10% absorbed the highest amount of water after 24 hrs. The weight losses of the modified blend at various temperatures were found to increase with the addition of nanofibre. The Scanning electron microscope (SEM) revealed cracks, voids and blend-separation as the amount of jute nanofibre was increased. While, Dynamic Mechanical Analysis (DMA) revealed that the Tg of the modified blend was improved, while the loss-factor improved greatly by 43%, but the storage and loss-moduli remained unchanged.

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“…This occurred as a result of bre-bre interaction (interface), thereby reducing the strength of the material. A similar nding was reported by Zhang et al (2022) [73].…”

Section: Scanning Electron Microscope Image Of the Modi Ed Polymer Blendsupporting

confidence: 90%

Effect of Jute Nanofibre on the Properties of Waste Polypropylene/Polystyrene /Natural Rubber (wPP/PS/NR) Ter- Polymer Blend

Adamu

Bello

Shehu

et al. 2023

Preprint

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“…In our previous work, polyethylene glycol (PEG) was used to moisten cellulose to break the hydrogen bond network of cellulose, and then through powerful mechanical processing to prepare cellulose micro ber (CMF) and CNF (Wang et al 2017). CNF or lignocellulose nano bers (LCNF) can also be prepared by the combination of glycerol and slight acid system swelling and mechanical treatment (Zhang et al 2022b).…”

Section: The Effect Of Hbd In Dess On Nano Brillation Of Cellulosementioning

confidence: 99%

Insights into the critical role of anions in nanofibrillation of cellulose in deep eutectic solvents

Zhang,

Dai,

Zhang

et al. 2023

Preprint

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Complex interactions between cellulose molecules and small molecules can lead to dramatic changes in the structure of the hydrogen bond network in cellulose in green sustainable deep eutectic solvents (DESs). However, the molecular and ionic evolution mechanism of DESs on cellulose nanofibrillation is still unclear. In this study, the mechanism and the critical role of action of ions in DESs on cellulose nanofibrillation were investigated. The results showed that cellulose nanofiber (CNF) with a diameter of less than 200 nm can be prepared directly by DES containing lactic acid (LA) and chloride (LA/ammonium chloride (NH4Cl) and LA/dodecyltrimethylammonium chloride (DTAC) with a diameter of less than 200 nm, and LA/zinc chloride (ZnCl2) with a diameter of less than 100 nm). The Kamlet-Abboud-Taft parameters (KAT value) showed that DESs containing LA have higher hydrogen bond acidity (α) than other systems (such as ethylene glycol and urea) without LA, which can provide more active protons to improve the proton mobility in the cellulose nanofibrillation. And DESs composed of LA and Cl− have high hydrogen bond alkalinity (β), which can lead to great changes in the original hydrogen bond network of cellulose and form a new hydrogen bond structure, thus making the deconstruction of cellulose easy. Thus, LA can be esterified with hydroxyl groups of cellulose under high-temperature moistening conditions, and the CNF prepared by DES system containing LA and Cl− had a highest degree of substitution (DS) (up to 0.73 in LA/ZnCl2 system) after high-temperature moistening.

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“…Indeed, compared to the production of conventional CNF, LCNF enhances the utilization efficiency of biomass while preserving the characteristics of lignin in the nanomaterial. Moreover, residual lignin imparts LCNF with thermal stability, lower hydrophilicity, UV-blocking capability, and antioxidant activity. − …”

Section: Introductionmentioning

confidence: 99%

Lignosulfonates Enable the Coproduction of Fibrillated Lignocellulose and Fermentable Sugars from Chemi-Thermomechanical Wood Fibers

Wang,

Song,

et al. 2024

ACS Sustainable Chem. Eng.

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Lignosulfonates (LS) are known to reduce the recalcitrance of wood fibers to enzymatic hydrolysis. This study furthers the use of LS for the bioconversion of chemithermomechanical pulp (CTMP, ca. 26% lignin) at high solids content (10%) using a cellulase and hemicellulase prehydrolysis complex combined with LS loading (dual treatment). The process (10% solids, 12 h) increases the sugar yield by 20% and produces high-quality lignin-containing cellulose nanofibrils (LCNF) by mechanical fibrillation. Moreover, the dual treatment yields nanofibrils of smaller lateral size and enables better colloidal stability compared with those obtained by enzyme treatment alone or by sequential application (LS addition after enzyme). Translucent films were produced with LCNF, which are shown for their reduced hydrophilicity, high mechanical strength, and UV shielding performance. The introduced approach for efficient utilization of lignocellulose resources to coproduce high-value fibrillated lignocellulose and sugars is expected to lead to new opportunities given the availability of CTMP under the persistent reduction in demand of newsprint and printing grades.

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Lignocellulose nanofiber/polylactic acid (LCNF/PLA) composite with internal lignin for enhanced performance as 3D printable filament

Cited by 28 publications

References 42 publications

Effect of Jute Nanofibre on the Properties of Waste Polypropylene/Polystyrene /Natural Rubber (wPP/PS/NR) Ter- Polymer Blend

Effect of Jute Nanofibre on the Properties of Waste Polypropylene/Polystyrene /Natural Rubber (wPP/PS/NR) Ter- Polymer Blend

Insights into the critical role of anions in nanofibrillation of cellulose in deep eutectic solvents

Lignosulfonates Enable the Coproduction of Fibrillated Lignocellulose and Fermentable Sugars from Chemi-Thermomechanical Wood Fibers

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