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Meeting Materials Science & Technology 2019
Symposium Metal and Polymer Matrix Composites IV
Presentation Title Hydroxylated Boron Nitride Nanotube Reinforced Polyvinyl Alcohol Nanocomposite Films with Simultaneous Improvement of Mechanical and Thermal Properties
Author(s) Xiaolong Lu, Jenniffer Bustillos, Pranjal Nautiyal, Tyler Dolmetsch, Cheng Zhang, Tony Thomas, Yao Chen, Benjamin Boesl, Arvind Agarwal
On-Site Speaker (Planned) Xiaolong Lu
Abstract Scope 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.
Proceedings Inclusion? Definite: At-meeting proceedings

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Hydroxylated Boron Nitride Nanotube Reinforced Polyvinyl Alcohol Nanocomposite Films with Simultaneous Improvement of Mechanical and Thermal Properties
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