Investigation of cross-linked PVA/starch biocomposites reinforced by cellulose nanofibrils isolated from aspen wood sawdust

Heidarian, Pejman; Behzad, Tayebeh; Sadeghi, Meysam

doi:10.1007/s10570-017-1336-4

Cited by 42 publications

(21 citation statements)

References 44 publications

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“…This observation could be related to the agglomeration of nanofibers at high concentrations which decreases their reinforcing influence. This observation is also in agreement with some previous studies . Hydrophobic modification of CNFs using acetylation decreases the inner–outer molecular interactions of fibrils and increases the dispersion of nanofibers within a compound at high concentration.…”

Section: Resultssupporting

confidence: 93%

“…(a), higher values for UTS were observed in ACNF‐reinforced samples than in CNF‐assisted ones. UTS of ACNF‐reinforced blends similarly declined at 5 wt% concentration, proving the claim that aggregation always happens at a specific concentration in nanocomposites . After loading 5 wt% ACNFs, UTS of LDPE/TPS/PE‐ g ‐MA blend increased by almost 30 and 20% compared with the neat and 5 wt% CNF‐reinforced counterparts, respectively.…”

Section: Resultsmentioning

confidence: 54%

“…This observation is also in agreement with some previous studies. 1,39,40 Hydrophobic modification of CNFs using acetylation decreases the inner-outer molecular interactions of fibrils 28 and increases the dispersion of nanofibers within a compound at high concentration. Therefore, as can be seen in Fig.…”

Section: Mechanical Properties Of Nanocompositesmentioning

confidence: 99%

“…UTS of ACNF-reinforced blends similarly declined at 5 wt% concentration, proving the claim that aggregation always happens at a specific concentration in nanocomposites. 1,39,40 After loading 5 wt% ACNFs, UTS of LDPE/TPS/PE-g-MA blend increased by almost 30 and 20% compared with the neat and 5 wt% CNF-reinforced counterparts, respectively. This implies that ACNFs were more homogeneously dispersed into the matrix than CNFs.…”

Section: Mechanical Properties Of Nanocompositesmentioning

confidence: 99%

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Effect of cellulose nanofibers and acetylated cellulose nanofibers on the properties of low‐density polyethylene/thermoplastic starch blends

Ahmadi

Behzad

Bagheri

2018

Polymer International

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The aim of this study was to evaluate the effect of cellulose nanofibers (CNFs) and acetylated cellulose nanofibers (ACNFs) on the properties of low‐density polyethylene/thermoplastic starch/polyethylene‐grafted maleic anhydride (LDPE/TPS/PE‐g‐MA) blends. For this purpose, CNFs, isolated from wheat straw fibers, were first acetylated using acetic anhydride in order to modify their hydrophilicity. Afterwards, LDPE/TPS/PE‐g‐MA blends were reinforced using either CNFs or ACNFs at various concentrations (1–5 wt%) with a twin‐screw extruder. The mechanical results demonstrated that addition of ACNFs more significantly improved the ultimate tensile strength and Young's modulus of blends than addition of CNFs, albeit elongation at break of both reinforced blends decreased compared with the neat sample. Additionally, biodegradability and water absorption capacity of blends improved due to the incorporation of both nanofibers, these effects being more pronounced for CNF‐assisted blends than ACNF‐reinforced counterparts. © 2018 Society of Chemical Industry

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Section: Resultssupporting

confidence: 93%

Section: Resultsmentioning

confidence: 54%

Section: Mechanical Properties Of Nanocompositesmentioning

confidence: 99%

Section: Mechanical Properties Of Nanocompositesmentioning

confidence: 99%

See 2 more Smart Citations

Effect of cellulose nanofibers and acetylated cellulose nanofibers on the properties of low‐density polyethylene/thermoplastic starch blends

Ahmadi

Behzad

Bagheri

2018

Polymer International

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“…However, one of the most important issues that need to be addressed for the wide use of CNFs aerogels is the improvement of their mechanical properties. Strategies such as polymer blending or matrix cross‐linking have been applied, providing mechanically strong aerogels.…”

Section: Introductionmentioning

confidence: 99%

Boron/nitrogen flame retardant additives cross‐linked cellulose nanofibril/montmorillonite aerogels toward super‐low flammability and improved mechanical properties

Wang

Sánchez‐Soto

Fan

et al. 2019

Polymers for Advanced Techs

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Low‐flammability freeze‐dried cellulose nanofibril (CNF)/sodium montmorillonite (MMT) aerogels with improved mechanical properties were fabricated via a facile cross‐linking of boric acid (BA) and melamine‐formaldehyde (MF) resins. Scanning electron microscopy analysis showed that BA cross‐linking reduced the interspacing of layered CNF/MMT aerogels whereas introduction of MF formed polymeric fibrils that connected the layers. These changes on microstructures resulted in the improvement on compressive mechanical properties of the cross‐linked aerogels. Moreover, the boron (B)/nitrogen (N) containing flame retardant cross‐linkers greatly increased the limiting oxygen index values that could reach 85% and leveled the UL‐94 rating from no rating to V‐0. Cone calorimetric results suggested that BA and MF induced a synergistic effect on the flame retardant properties of the CNF/MMT aerogels. However, the thermal conductivity was little affected because pore structure and size was not substantially modified. This simple approach fabricated highly flame‐resistant and mechanically strong CNF‐based aerogels that could be used in various engineering fields.

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Development, physical‐chemical properties, and photodegradation of pectin film reinforced with malt bagasse fibers by continuous casting

Mendes

Norcino

Manrich

et al. 2020

J of Applied Polymer Sci

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This work aims to develop composite films from renewable sources and to use a residue from the brewing industry, malt bagasse, as a reinforcing agent. The composites were prepared with 0–15 wt%/wt% of malt bagasse, using the continuous casting process. All films were characterized in terms of their microstructure, physicochemical, mechanical, and photodegradation properties. The properties of the films were influenced by the concentration variation of the malt bagasse fiber, allowing the deformation of the films to increase by approximately 57%. The incorporation of 15 wt%/wt% of malt bagasse provided a reduction in the water vapor transmission rate and in the hygroscopicity of the pectin films. However, the fibers acted as UV light blockers, making it difficult to photodegradate the films. Therefore, the composite films based on pectin and malt bagasse presented adequate properties to be used in the packaging industry.

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Investigation of cross-linked PVA/starch biocomposites reinforced by cellulose nanofibrils isolated from aspen wood sawdust

Cited by 42 publications

References 44 publications

Effect of cellulose nanofibers and acetylated cellulose nanofibers on the properties of low‐density polyethylene/thermoplastic starch blends

Effect of cellulose nanofibers and acetylated cellulose nanofibers on the properties of low‐density polyethylene/thermoplastic starch blends

Boron/nitrogen flame retardant additives cross‐linked cellulose nanofibril/montmorillonite aerogels toward super‐low flammability and improved mechanical properties

Development, physical‐chemical properties, and photodegradation of pectin film reinforced with malt bagasse fibers by continuous casting

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