TY - JOUR
T1 - High stiffness nano-composite fibres from polyvinylalcohol filled with graphene and boron nitride
AU - Boland, Conor S.
AU - Barwich, Sebastian
AU - Khan, Umar
AU - Coleman, Jonathan N.
N1 - Publisher Copyright:
© 2015 Elsevier Ltd. All rights reserved.
PY - 2016/4/1
Y1 - 2016/4/1
N2 - Here we describe using nanosheets of both graphene and boron nitride, produced by liquid phase exfoliation, as fillers in composite fibres. The fibres were prepared by coagulation spinning using polyvinylalcohol as a matrix. We obtained good quality fibres with diameter and nanosheet volume fraction which could be controlled via the ratio of nanosheet to polymer injection rates. The mechanical stiffness (modulus, Y) and strength, σB, increased relatively slowly with volume fraction (dY/dVf ≤ 160 GPa and dσB/dVf ≤ 0.8 GPa). However, both stiffness and strength continued increasing with nanosheet content to loading levels of ∼20vol%, after which the properties fell off. Such relatively high loading levels result in impressive mechanical properties with stiffness and strength of up to 30 GPa and 260 MPa observed. In addition, we found the graphene-filled fibres to be electrically conducting with conductivities of up to 3 S/m.
AB - Here we describe using nanosheets of both graphene and boron nitride, produced by liquid phase exfoliation, as fillers in composite fibres. The fibres were prepared by coagulation spinning using polyvinylalcohol as a matrix. We obtained good quality fibres with diameter and nanosheet volume fraction which could be controlled via the ratio of nanosheet to polymer injection rates. The mechanical stiffness (modulus, Y) and strength, σB, increased relatively slowly with volume fraction (dY/dVf ≤ 160 GPa and dσB/dVf ≤ 0.8 GPa). However, both stiffness and strength continued increasing with nanosheet content to loading levels of ∼20vol%, after which the properties fell off. Such relatively high loading levels result in impressive mechanical properties with stiffness and strength of up to 30 GPa and 260 MPa observed. In addition, we found the graphene-filled fibres to be electrically conducting with conductivities of up to 3 S/m.
UR - http://www.scopus.com/inward/record.url?scp=84959352768&partnerID=8YFLogxK
U2 - 10.1016/j.carbon.2015.12.023
DO - 10.1016/j.carbon.2015.12.023
M3 - Article
AN - SCOPUS:84959352768
SN - 0008-6223
VL - 99
SP - 280
EP - 288
JO - Carbon
JF - Carbon
ER -