Type

Journal Article

Authors

Conor Boland
Jonathan Coleman

Subjects

Physics

Topics
polymer mechanical properties composite fibres stiffness boron nitride phase graphene nanosheet

High stiffness nano-composite fibres from polyvinylalcohol filled with graphene and boron nitride (2016)

Abstract 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, ?B, increased relatively slowly with volume fraction (dY/dVf ?160 GPa and d?B/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.
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Full list of authors on original publication

Conor Boland, Jonathan Coleman

Experts in our system

1
Conor Boland
Trinity College Dublin
Total Publications: 9
 
2
Jonathan Coleman
Trinity College Dublin
Total Publications: 217