TY - JOUR
T1 - Liquid crystalline texture and hydrogen bond on the thermal conductivities of intrinsic thermal conductive polymer films
AU - Li, Ying
AU - Gong, Changdan
AU - Li, Chenggong
AU - Ruan, Kunpeng
AU - Liu, Chao
AU - Liu, Huan
AU - Gu, Junwei
N1 - Publisher Copyright:
© 2021
PY - 2021/8/20
Y1 - 2021/8/20
N2 - Polymer-dispersed liquid crystal (PDLC) films comprising polyvinyl alcohol (PVA) and liquid crystal monomer (LCM) were successfully obtained by the method of solution casting & thermal compressing. LCM was distributed orderly in PVA matrix by hydrogen bond interaction, to form PVA-LCM interpenetrating-layered networks. When the mass fraction of LCM was up to 35 wt%, the corresponding in-plane thermal conductivity coefficient (λ//) of PDLC film was significantly increased to 1.41 W m−1 K−1, about 10.8 times that of neat PVA (0.13 W m−1 K−1). High intrinsic λ// values of PDLC films were mainly attributed to the formed microscopic-ordered structures from ordered stacking of LCM, ordered arrangement of PVA chains, and their hydrogen bond interaction. This work would offer a new way to design and prepare novel intrinsic high thermal conductive polymers.
AB - Polymer-dispersed liquid crystal (PDLC) films comprising polyvinyl alcohol (PVA) and liquid crystal monomer (LCM) were successfully obtained by the method of solution casting & thermal compressing. LCM was distributed orderly in PVA matrix by hydrogen bond interaction, to form PVA-LCM interpenetrating-layered networks. When the mass fraction of LCM was up to 35 wt%, the corresponding in-plane thermal conductivity coefficient (λ//) of PDLC film was significantly increased to 1.41 W m−1 K−1, about 10.8 times that of neat PVA (0.13 W m−1 K−1). High intrinsic λ// values of PDLC films were mainly attributed to the formed microscopic-ordered structures from ordered stacking of LCM, ordered arrangement of PVA chains, and their hydrogen bond interaction. This work would offer a new way to design and prepare novel intrinsic high thermal conductive polymers.
KW - Hydrogen bond interaction
KW - Intrinsic high thermal conductivity
KW - Liquid crystal monomer (LCM)
KW - Polyvinyl alcohol (PVA)
UR - https://www.scopus.com/pages/publications/85100433659
U2 - 10.1016/j.jmst.2021.01.017
DO - 10.1016/j.jmst.2021.01.017
M3 - 文章
AN - SCOPUS:85100433659
SN - 1005-0302
VL - 82
SP - 250
EP - 256
JO - Journal of Materials Science and Technology
JF - Journal of Materials Science and Technology
ER -