TY - GEN
T1 - Microfibrillated cellulose reinforced poly(vinyl alcohol) composites
AU - Tanpichai, Supachok
AU - Sampson, William W.
AU - Eichhorn, Stephen J.
PY - 2013/8
Y1 - 2013/8
N2 - Microfibrillated cellulose (MFC) was successfully prepared from lyocell fibers using combined homogenization and sonication treatments. MFC fibrils with a mean diameter of ~365 nm were observed, after the lyocell fibers with diameters of ~10 μm were mechanically treated for 60 min. Poly(vinyl alcohol) (PVA) composites reinforced with MFC were then fabricated using a solvent casting method. Physical and mechanical properties of the MFC reinforced PVA composites were investigated. An increase of ~13 and ~34% of tensile strength and Young's modulus was observed for the 3 wt% MFC reinforced composites, compared to those of the pure PVA. Raman spectroscopy was also employed to study the deformation micromechanics of the MFC reinforced PVA composites. The position of the Raman peak initially located at ~1095 cm-1, corresponding to the C-O ring stretching and C-O-C glycosidic bond stretching modes, was recorded. During tensile deformation, this peak was observed to shift towards a lower wavenumber position, indicating stress-transfer between the resin and the fibrils.
AB - Microfibrillated cellulose (MFC) was successfully prepared from lyocell fibers using combined homogenization and sonication treatments. MFC fibrils with a mean diameter of ~365 nm were observed, after the lyocell fibers with diameters of ~10 μm were mechanically treated for 60 min. Poly(vinyl alcohol) (PVA) composites reinforced with MFC were then fabricated using a solvent casting method. Physical and mechanical properties of the MFC reinforced PVA composites were investigated. An increase of ~13 and ~34% of tensile strength and Young's modulus was observed for the 3 wt% MFC reinforced composites, compared to those of the pure PVA. Raman spectroscopy was also employed to study the deformation micromechanics of the MFC reinforced PVA composites. The position of the Raman peak initially located at ~1095 cm-1, corresponding to the C-O ring stretching and C-O-C glycosidic bond stretching modes, was recorded. During tensile deformation, this peak was observed to shift towards a lower wavenumber position, indicating stress-transfer between the resin and the fibrils.
KW - Lyocell fibers
KW - Mechanical pretreatment
KW - Mechanical properties
KW - Nanocomposite
KW - Raman spectroscopy
UR - http://www.scopus.com/inward/record.url?scp=84884752494&partnerID=8YFLogxK
U2 - 10.4028/www.scientific.net/AMR.747.359
DO - 10.4028/www.scientific.net/AMR.747.359
M3 - Conference contribution
AN - SCOPUS:84884752494
SN - 9783037857717
VL - 747
T3 - Advanced Materials Research
SP - 359
EP - 362
BT - Advanced materials research
A2 - Sombatsompop, Narongrit
A2 - Bhattacharyya, Debes
A2 - Cheung, Karen Hoi-Yan
PB - Trans Tech Publications Ltd
CY - Switzerland
T2 - 4th International Conference on Multi-Functional Materials and Structures
Y2 - 14 July 2013 through 17 July 2013
ER -