Liquid crystalline texture and hydrogen bond on the thermal conductivities of intrinsic thermal conductive polymer films

Ying Li; Changdan Gong; Chenggong Li; Kunpeng Ruan; Chao Liu; Huan Liu; Junwei Gu

doi:10.1016/j.jmst.2021.01.017

Liquid crystalline texture and hydrogen bond on the thermal conductivities of intrinsic thermal conductive polymer films

Ying Li
, Changdan Gong
, Chenggong Li
, Kunpeng Ruan
, Chao Liu
, Huan Liu
, Junwei Gu

School of Chemistry and Chemical Engineering

Xi'an University of Science and Technology
Henan University of Science and Technology

Research output: Contribution to journal › Article › peer-review

112 Scopus citations

Abstract

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.

Original language	English
Pages (from-to)	250-256
Number of pages	7
Journal	Journal of Materials Science and Technology
Volume	82
DOIs	https://doi.org/10.1016/j.jmst.2021.01.017
State	Published - 20 Aug 2021

Keywords

Hydrogen bond interaction
Intrinsic high thermal conductivity
Liquid crystal monomer (LCM)
Polyvinyl alcohol (PVA)

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10.1016/j.jmst.2021.01.017

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@article{9823a1458f9b4a0e81321b9a8f99a5f5,

title = "Liquid crystalline texture and hydrogen bond on the thermal conductivities of intrinsic thermal conductive polymer films",

abstract = "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.",

keywords = "Hydrogen bond interaction, Intrinsic high thermal conductivity, Liquid crystal monomer (LCM), Polyvinyl alcohol (PVA)",

author = "Ying Li and Changdan Gong and Chenggong Li and Kunpeng Ruan and Chao Liu and Huan Liu and Junwei Gu",

note = "Publisher Copyright: {\textcopyright} 2021",

year = "2021",

month = aug,

day = "20",

doi = "10.1016/j.jmst.2021.01.017",

language = "英语",

volume = "82",

pages = "250--256",

journal = "Journal of Materials Science and Technology",

issn = "1005-0302",

publisher = "Chinese Society of Metals",

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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

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 -

Liquid crystalline texture and hydrogen bond on the thermal conductivities of intrinsic thermal conductive polymer films

Abstract

Keywords

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