|About this Abstract
||Materials Science & Technology 2019
||Metal and Polymer Matrix Composites IV
||Hydroxylated Boron Nitride Nanotube Reinforced Polyvinyl Alcohol Nanocomposite Films with Simultaneous Improvement of Mechanical and Thermal Properties
||Xiaolong Lu, Jenniffer Bustillos, Pranjal Nautiyal, Tyler Dolmetsch, Cheng Zhang, Tony Thomas, Yao Chen, Benjamin Boesl, Arvind Agarwal
|On-Site Speaker (Planned)
Hydroxylated boron nitride nanotube (OH-BNNT) aqueous dispersions were obtained by tip sonicating BNNTs in water without using any surfactants. Due to the high stability and good dispersibility of OH-BNNT aqueous dispersions, we successfully prepared transparent, flexible, strong and ductile OH-BNNT reinforced polyvinyl alcohol (PVA) multifunctional nanocomposite films through an aqueous solution casting technique. Tensile fracture strength, Young’s modulus and elongation at failure of PVA-1.0wt.%OH-BNNT nanocomposite film were increased by 46%, 55% and 45% respectively in comparison with pure PVA. Meanwhile, the addition of OH-BNNT contributed to an exciting improvement in thermal diffusivity (29%) and thermal conductivity (25%). These simultaneous enhanced mechanical and thermal properties were attributed to the intrinsic superior properties of homogenous dispersed OH-BNNTs and strong interfacial interactions between the OH-BNNT and PVA chains. This study suggests that BNNT reinforced polymer composites can be successfully synthesized for multifunctional applications, if homogeneous dispersion of BNNTs can be achieved.
||Definite: At-meeting proceedings