Fiber Orientation Control by Stretching in Cellulose Nanofiber Green Composites

Hitoshi Takagi; Antonio Norio Nakagaito; Yuya Sakaguchi

doi:10.4028/www.scientific.net/KEM.754.135

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Analysis of the Three-Dimensional Zone around the Interfacial Crack Tip: The K-Influence Domain Range in the Plane Stress State
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Analysis of Residual Stress around Semi-Circular Surface Notches due to Excessive Pressure
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Using Numerical Simulation in the Optimization of the Finishing Phases in Ceramic Tiles Manufacturing
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Hydrogen-Assisted Micro-Damage in Cold-Drawn Pearlitic Steels: Resembling Donatello Wooden Sculpture Texture
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Fiber Orientation Control by Stretching in Cellulose Nanofiber Green Composites
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Prediction of Fatigue Crack Path Based upon Green’s Function Theory
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Numerical Analysis for Cracked Functionally Graded Materials by Finite Block Method
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HomeKey Engineering MaterialsKey Engineering Materials Vol. 754Fiber Orientation Control by Stretching in...

Fiber Orientation Control by Stretching in Cellulose Nanofiber Green Composites

Abstract:

The presence of nanoscale cellulosic fiber; namely cellulose nanofiber, increases year by year because the mechanical and physical properties are believed to be comparable to those of common glass fibers. On the other hand, most of the reported strength data for the cellulose nanofiber-reinforced polymeric composite materials was not as high as expected. In order to obtain high-strength cellulose nanofiber-reinforced polymer composites, we tried to optimize the fiber orientation of cellulose nanofibers in poly (vinyl alcohol)-based polymer matrix by using a repeated mechanical stretching treatment. The fiber orientation of cellulose nanofibers in the poly (vinyl alcohol) matrix can be modified by changing the total amount of stretching strain applied during the multiple stretching treatments. The degree of fiber alignment was directly evaluated by observing the cellulose nanofibers on the sample surface with a digital microscope. The efficacy of proposed nanofiber alignment control has been explored experimentally and theoretically. The tensile strength and modulus of the cellulosic nanocomposites after applying the multiple stretching treatments increased by approximately 80% and 40% respectively, as compared with those of the untreated nanocomposites.

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Periodical:

Key Engineering Materials (Volume 754)

Pages:

135-138

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.754.135

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Online since:

September 2017

Authors:

Hitoshi Takagi*, Antonio Norio Nakagaito, Yuya Sakaguchi

Keywords:

Cellulose Nanofiber, Green Composites, Stretching

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