Abstract
Two-dimensional (2-D) boron nitride (BN) nanomaterials have received intensive attention because of their attractive mechanical, thermal and chemical stability. Here we demonstrate, for the first time, the synthesis of ribbon-like hexagonal boron nitride nano-architectures (RLBN) through a simple self-sacrificed template method using the cheap boric acid and melamine as raw materials. After the freeze-drying and thermal decomposition process, uniform ultrathin RLBN with width of 200–500 nm and thick of a few nanometers can be obtained. The RLBN with high quality tremendously improves the mechanical and thermal properties of Polyhydroxyalkanoates (PHA) polymer. The decomposition temperature (Td) of PHA increases from 368 °C to 390 °C, while the thermal conductivity increases by 46.0% with RLBN doped. The ductility (strain at break), yield strength and tensile strength of PHA@RLBN composite are also enhanced by 52.3%, 49.4% and 6.01% respectively.
Highlights
Two-dimensional (2-D) boron nitride (BN) nanomaterials have received intensive attention because of their attractive mechanical, thermal and chemical stability
In this study we demonstrate, for the first time, the synthesis of a novel ribbon-like hexagonal boron nitride nano-architectures (RLBN) through a simple self-sacrificed template method using the cheap boric acid and melamine as raw materials
The ribbon-like M∙2B nanomaterials in-situ pyrolysis into RLBN, with the morphology remaining unchanged via a self-sacrificed heat treatment process
Summary
Two-dimensional (2-D) boron nitride (BN) nanomaterials have received intensive attention because of their attractive mechanical, thermal and chemical stability. For the first time, the synthesis of ribbon-like hexagonal boron nitride nano-architectures (RLBN) through a simple self-sacrificed template method using the cheap boric acid and melamine as raw materials. The RLBN with high quality tremendously improves the mechanical and thermal properties of Polyhydroxyalkanoates (PHA) polymer. The decomposition temperature (Td) of PHA increases from 368 °C to 390 °C, while the thermal conductivity increases by 46.0% with RLBN doped. Wang et al.[10] find a simple and novel “biomass-directed on site synthesis” method to fabricate large scale high quality boron nitride nanosheets. Decomposition temperatures of PHA composites increased by 12 °C, and the thermal conductivity increase by 27.3% at the same time
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