TY - JOUR
T1 - Enhanced thermal conductivity in oriented polyvinyl alcohol/graphene oxide composites
AU - Pan, Xinglong
AU - Debije, Michael G.
AU - Schenning, Albert P.H.J.
AU - Bastiaansen, Cees W.M.
PY - 2021/6/8
Y1 - 2021/6/8
N2 - Polymer composites have attracted increasing interest as thermal management materials for use in devices owing to their ease of processing and potential lower costs. However, most polymer composites have only modest thermal conductivities, even at high concentrations of additives, resulting in high costs and reduced mechanical properties, which limit their applications. To achieve high thermally conductive polymer materials with a low concentration of additives, anisotropic, solid-state drawn composite films were prepared using water-soluble polyvinyl alcohol (PVA) and dispersible graphene oxide (GO). A co-additive (sodium dodecyl benzenesulfonate) was used to improve both the dispersion of GO and consequently the thermal conductivity. The hydrogen bonding between GO and PVA and the simultaneous alignment of GO and PVA in drawn composite films contribute to an improved thermal conductivity (∼25 W m–1 K–1), which is higher than most reported polymer composites and an approximately 50-fold enhancement over isotropic PVA (0.3–0.5 W m–1 K–1). This work provides a new method for preparing water-processable, drawn polymer composite films with high thermal conductivity, which may be useful for thermal management applications.
AB - Polymer composites have attracted increasing interest as thermal management materials for use in devices owing to their ease of processing and potential lower costs. However, most polymer composites have only modest thermal conductivities, even at high concentrations of additives, resulting in high costs and reduced mechanical properties, which limit their applications. To achieve high thermally conductive polymer materials with a low concentration of additives, anisotropic, solid-state drawn composite films were prepared using water-soluble polyvinyl alcohol (PVA) and dispersible graphene oxide (GO). A co-additive (sodium dodecyl benzenesulfonate) was used to improve both the dispersion of GO and consequently the thermal conductivity. The hydrogen bonding between GO and PVA and the simultaneous alignment of GO and PVA in drawn composite films contribute to an improved thermal conductivity (∼25 W m–1 K–1), which is higher than most reported polymer composites and an approximately 50-fold enhancement over isotropic PVA (0.3–0.5 W m–1 K–1). This work provides a new method for preparing water-processable, drawn polymer composite films with high thermal conductivity, which may be useful for thermal management applications.
KW - graphene oxide
KW - hydrogen bonding
KW - orientation
KW - polyvinyl alcohol
KW - thermal conductivity
UR - http://www.scopus.com/inward/record.url?scp=85108633140&partnerID=8YFLogxK
U2 - 10.1021/acsami.1c06415
DO - 10.1021/acsami.1c06415
M3 - Article
C2 - 34102056
SN - 1944-8244
VL - 13
SP - 28864
EP - 28869
JO - ACS Applied Materials & Interfaces
JF - ACS Applied Materials & Interfaces
IS - 24
ER -