Annealing and saponification of electrospun cellulose-acetate nanofibers used as reinforcement materials for composites

Inukai, Shunya; Kurokawa, Naruki; Hotta, Atsushi

doi:10.1016/j.compositesa.2018.07.028

Cited by 25 publications

(8 citation statements)

References 38 publications

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“…Additionally, the elongation at break of PCL significantly decreased from ~1400 to ~10% by compounding RC‐NF and RC‐NF‐APS. In our previous study, such drastic decrease in the elongation at break was also observed for the composites containing electrospun nanofibers, resulting from the rigidity effects by the relatively brittle reinforcing fibers . Both RC‐NF/PCL and RC‐NF‐APS/PCL presented such decrease in the elongation at break.…”

Section: Resultsmentioning

confidence: 52%

“…A high voltage of 12.0 kV was applied to the needle with a power resource (1639, Imoto Machinery Co., Ltd., Kyoto, Japan). The distance between the needle and the collector and the flow rate of the solution were set at 15 cm and 0.6 mL/h, respectively, according to the previous studies …”

Section: Methodsmentioning

confidence: 99%

“…After the electrospinning, the obtained CA‐NF were annealed at 50 °C for 24 h under vacuum before saponification, because the annealing of CA‐NF was effective method to enhance the mechanical properties of RC‐NF . The annealed CA‐NF were then immersed in 0.05 M NaOH/ethanol solution for 24 h to obtain RC‐NF.…”

Section: Methodsmentioning

confidence: 99%

“…fabricated regenerated cellulose nanofibers (RC‐NF) by the saponification of electrospun cellulose–acetate nanofibers (CA‐NF) . Our group has also reported that the Young's modulus of PVA or PLA composites was increased by compounding RC‐NF . It is, therefore, considered that RC‐NF are promising materials to enhance the Young's modulus of PCL.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Mechanical properties of poly(ε‐caprolactone) composites with electrospun cellulose nanofibers surface modified by 3‐aminopropyltriethoxysilane

Inukai

Kurokawa

Hotta

2019

J of Applied Polymer Sci

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To enhance the reinforcement effects of regenerated cellulose nanofibers (RC-NF) in poly(ε-caprolactone) (PCL), we synthesized RC-NF-3-aminopropyltriethoxysilane (APS), the surface-modified RC-NF by APS. The RC-NF were fabricated by the saponification of electrospun cellulose-acetate nanofibers. The surface modification by APS was confirmed by the X-ray photoelectron spectroscopy (XPS). To enhance the mechanical property of PCL, the RC-NF and the RC-NF-APS were separately compounded into PCL by compression molding. It was found that, when the fiber concentration of RC-NF-APS was 17 wt %, the Young's modulus at room temperature increased from 698.0 to 744.7 MPa, whereas the storage modulus at 55 C almost increased from 180 to 220 MPa. The micrographs of the fracture surface of the composites revealed that the surface modification prevented the pull-out of RC-NF from PCL. It was concluded that the mechanical properties of the composites were enhanced due to the improvement of the compatibility between RC-NF and PCL by the surface modification with APS.

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Section: Resultsmentioning

confidence: 52%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Mechanical properties of poly(ε‐caprolactone) composites with electrospun cellulose nanofibers surface modified by 3‐aminopropyltriethoxysilane

Inukai

Kurokawa

Hotta

2019

J of Applied Polymer Sci

Self Cite

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show abstract

“…In this case, the products can show poor performance and, therefore, require some post-treatment processes such as thermal treatment (or annealing) above the glass transition. As a result, the crystallinity, the morphology, the mechanical properties and the piezoelectricity of the nanofibers are greatly improved [23][24][25][26].…”

Section: Introductionmentioning

confidence: 99%

On the Nanoscale Mapping of the Mechanical and Piezoelectric Properties of Poly (L-Lactic Acid) Electrospun Nanofibers

et al. 2020

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The effect of the post-annealing process on different properties of poly (L-lactic acid) (PLLA) nanofibers has been investigated in view of their use in energy-harvesting devices. Polymeric PLLA nanofibers were prepared by using electrospinning and then were thermally treated above their glass transition. A detailed comparison between as-spun (amorphous) and annealed (semi-crystalline) samples was performed in terms of the crystallinity, morphology and mechanical as well as piezoelectric properties using a multi-technique approach combining DSC, XRD, FTIR, and AFM measurements. A significant increase in the crystallinity of PLLA nanofibers has been observed after the post-annealing process, together with a major improvement of the mechanical and piezoelectric properties.

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Polyvinyl Alcohol/Cellulose‐Based Biocomposites and Bionanocomposites

Awang

Mohamed

Salleh

2023

Polyvinyl Alcohol‐Based Biocomposites and Bionanocomposites

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Annealing and saponification of electrospun cellulose-acetate nanofibers used as reinforcement materials for composites

Cited by 25 publications

References 38 publications

Mechanical properties of poly(ε‐caprolactone) composites with electrospun cellulose nanofibers surface modified by 3‐aminopropyltriethoxysilane

Mechanical properties of poly(ε‐caprolactone) composites with electrospun cellulose nanofibers surface modified by 3‐aminopropyltriethoxysilane

On the Nanoscale Mapping of the Mechanical and Piezoelectric Properties of Poly (L-Lactic Acid) Electrospun Nanofibers

Polyvinyl Alcohol/Cellulose‐Based Biocomposites and Bionanocomposites

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