Stress transfer in microfibrillated cellulose reinforced poly(vinyl alcohol) composites

Supachok Tanpichai; William W. Sampson; Stephen J. Eichhorn

doi:10.1016/j.compositesa.2014.06.014

Stress transfer in microfibrillated cellulose reinforced poly(vinyl alcohol) composites

Supachok Tanpichai, William W. Sampson, Stephen J. Eichhorn

Research output: Contribution to journal › Article › peer-review

Abstract

Combined homogenisation and sonication treatments of micron-sized lyocell fibres were used to generate microfibrillated cellulose (MFC) with fibril diameters of ∼350 nm. No further reduction in fibril diameter was observed after 30 min treatment. Poly(vinyl alcohol) (PVA) composites reinforced with these fibrils were fabricated using solvent casting and physical and mechanical properties were investigated. The presence of MFC in PVA increased the thermal degradation of the polymer. An increase in both the tensile strength and modulus of the composites was observed for up to 3 wt.% of fibrils; beyond this point no significant increases were observed. An estimate of ∼39 GPa is made for the fibril modulus based on this increase. Stress-transfer between the polymer resin and the fibrils was investigated using Raman spectroscopy. Stress transfer in the composite is shown to be greater than that of a pure network of fibres, indicating a good fibre-matrix bond. © 2014 Elsevier Ltd. All rights reserved.

Original language	English
Pages (from-to)	186-191
Number of pages	5
Journal	Composites Part A: Applied Science and Manufacturing
Volume	65
DOIs	https://doi.org/10.1016/j.compositesa.2014.06.014
Publication status	Published - 2014

Keywords

A. Nano-structures
B. Stress transfer
C. Micro-mechanics
D. Mechanical testing

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10.1016/j.compositesa.2014.06.014

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title = "Stress transfer in microfibrillated cellulose reinforced poly(vinyl alcohol) composites",

abstract = "Combined homogenisation and sonication treatments of micron-sized lyocell fibres were used to generate microfibrillated cellulose (MFC) with fibril diameters of ∼350 nm. No further reduction in fibril diameter was observed after 30 min treatment. Poly(vinyl alcohol) (PVA) composites reinforced with these fibrils were fabricated using solvent casting and physical and mechanical properties were investigated. The presence of MFC in PVA increased the thermal degradation of the polymer. An increase in both the tensile strength and modulus of the composites was observed for up to 3 wt.% of fibrils; beyond this point no significant increases were observed. An estimate of ∼39 GPa is made for the fibril modulus based on this increase. Stress-transfer between the polymer resin and the fibrils was investigated using Raman spectroscopy. Stress transfer in the composite is shown to be greater than that of a pure network of fibres, indicating a good fibre-matrix bond. {\textcopyright} 2014 Elsevier Ltd. All rights reserved.",

keywords = "A. Nano-structures, B. Stress transfer, C. Micro-mechanics, D. Mechanical testing",

author = "Supachok Tanpichai and Sampson, {William W.} and Eichhorn, {Stephen J.}",

year = "2014",

doi = "10.1016/j.compositesa.2014.06.014",

language = "English",

volume = "65",

pages = "186--191",

journal = "Composites Part A: Applied Science and Manufacturing",

issn = "1878-5840",

publisher = "Elsevier BV",

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TY - JOUR

T1 - Stress transfer in microfibrillated cellulose reinforced poly(vinyl alcohol) composites

AU - Tanpichai, Supachok

AU - Sampson, William W.

AU - Eichhorn, Stephen J.

PY - 2014

Y1 - 2014

N2 - Combined homogenisation and sonication treatments of micron-sized lyocell fibres were used to generate microfibrillated cellulose (MFC) with fibril diameters of ∼350 nm. No further reduction in fibril diameter was observed after 30 min treatment. Poly(vinyl alcohol) (PVA) composites reinforced with these fibrils were fabricated using solvent casting and physical and mechanical properties were investigated. The presence of MFC in PVA increased the thermal degradation of the polymer. An increase in both the tensile strength and modulus of the composites was observed for up to 3 wt.% of fibrils; beyond this point no significant increases were observed. An estimate of ∼39 GPa is made for the fibril modulus based on this increase. Stress-transfer between the polymer resin and the fibrils was investigated using Raman spectroscopy. Stress transfer in the composite is shown to be greater than that of a pure network of fibres, indicating a good fibre-matrix bond. © 2014 Elsevier Ltd. All rights reserved.

AB - Combined homogenisation and sonication treatments of micron-sized lyocell fibres were used to generate microfibrillated cellulose (MFC) with fibril diameters of ∼350 nm. No further reduction in fibril diameter was observed after 30 min treatment. Poly(vinyl alcohol) (PVA) composites reinforced with these fibrils were fabricated using solvent casting and physical and mechanical properties were investigated. The presence of MFC in PVA increased the thermal degradation of the polymer. An increase in both the tensile strength and modulus of the composites was observed for up to 3 wt.% of fibrils; beyond this point no significant increases were observed. An estimate of ∼39 GPa is made for the fibril modulus based on this increase. Stress-transfer between the polymer resin and the fibrils was investigated using Raman spectroscopy. Stress transfer in the composite is shown to be greater than that of a pure network of fibres, indicating a good fibre-matrix bond. © 2014 Elsevier Ltd. All rights reserved.

KW - A. Nano-structures

KW - B. Stress transfer

KW - C. Micro-mechanics

KW - D. Mechanical testing

U2 - 10.1016/j.compositesa.2014.06.014

DO - 10.1016/j.compositesa.2014.06.014

M3 - Article

SN - 1878-5840

VL - 65

SP - 186

EP - 191

JO - Composites Part A: Applied Science and Manufacturing

JF - Composites Part A: Applied Science and Manufacturing

ER -

Stress transfer in microfibrillated cellulose reinforced poly(vinyl alcohol) composites

Abstract

Keywords

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