Thermally conductive poly(lactic acid)/boron nitride composites via regenerated cellulose assisted Pickering emulsion approach

作     者：Yating Wang Hong Jin Jiajun Shen Bijia Wang Xueling Feng Zhiping Mao Yumei Zhang Xiaofeng Sui Yating Wang;Hong Jin;Jiajun Shen;Bijia Wang;Xueling Feng;Zhiping Mao;Yumei Zhang;Xiaofeng Sui

作者机构：Key Lab of Science and Technology of Eco-TextileMinistry of EducationCollege of ChemistryChemical Engineering and BiotechnologyDonghua UniversityNo.2999North Renmin RoadSongjiang DistrictShanghai 201620China Innovation Center for Textile Science and Technology of DHUDonghua UniversityNo.2999North Renmin RoadSongjiang DistrictShanghai 201620China State Key Laboratory for Modification of Chemical Fibers and Polymer MaterialsCollege of Materials Science and EngineeringDonghua UniversityNo.2999North Renmin RoadSongjiang DistrictShanghai 201620China 

出 版 物：《Journal of Materials Science & Technology》 (材料科学技术（英文版）)

年 卷 期：2022年第101卷第6期

页      面：146-154页

核心收录：

学科分类：08[工学] 0817[工学-化学工程与技术] 0806[工学-冶金工程] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 0802[工学-机械工程] 0801[工学-力学（可授工学、理学学位）] 0702[理学-物理学] 

基　　金：supported by the One Belt and One Road Innovative Talent Exchange Program for Foreign Experts[Grant No.DL20200009005] the Fundamental Research Funds for the Central Universities[Grant No.2232021G-02] Fundamental Research Funds for the Central Universities[Grant No.2232020G-04]。 

主　　题：Boron nitride Regenerated cellulose Emulsion Noncovalent interaction Thermal conductivity 

摘      要：Polymer-based thermally conductive composites have attracted tremendous interest in thermal management of electronics.However,it remains challenging to achieve high thermal conductivity partly because the difficulty to obtain favorable distribution and orientation of conductive fillers within the polymer matrix.Herein,networked boron nitride(BN)conductive pathway was realized within the poly(lactic acid)(PLA)matrix,via regenerated cellulose(RC)-assisted assembly of BN on Pickering emulsion interface based on the noncovalent interaction,followed by solvent evaporation and hot-compressing.The strong noncovalent interactions between BN and RC were found critical to enhance the wettability and stability of BN in aqueous media with a lowest mass ratio of 1:40 of RC and BN.The obtained PLA/BN composites feature a thermal conductivity of 1.06 W/(m K)at 28.4 wt%BN loading,representing an enhancement of 430%comparing to neat PLA,and the crystallinity of the composites could increase significantly from11.7%(neat PLA)to 43.7%.This simple,environmentally friendly and effective strategy could be easily extended for effective construction of thermally conductive composites.