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Great enhancement of mechanical features in PLA based composites containing aligned few layer graphene ( FLG ), the effect of FLG loading, size, and dispersion on mechanical and thermal properties
Author(s) -
El Marouazi Hamza,
Schueren Benoit,
Favier Damien,
Bolley Anaëlle,
Dagorne Samuel,
Dintzer Thierry,
Janowska Izabela
Publication year - 2021
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.51300
Subject(s) - materials science , composite material , composite number , ultimate tensile strength , graphene , elongation , dispersion (optics) , modulus , young's modulus , nanotechnology , physics , optics
Four series of polylactide (PLA) based composite films containing horizontally aligned few layer graphene (FLG) flakes of high aspect ratio and adsorbed albumin are prepared. The mechanical and thermal properties varies with percentage, dispersion degree and size of FLG flakes. Great improvement up to 290% and 360% of tensile modulus and strength respectively were obtained for the composite containing high lateral size of FLG at 0.17% wt, and up to 60% and 80% for the composite with very well dispersed 0.02% wt FLG. The composites of PLA and PEG‐PLLA containing very well dispersed FLG flakes at 0.07% wt are ductile showing enhancement of elongation at break up to respectively 80% and 88%. Relatively high electrical conductivity, 5 × 10 −3 S/cm, is measured for PLA film charged with 3% of FLG.