Synthesis and Characterization of Chitosan/Boron Nitride Composites

Abstract

Chitosan/Boron nitride (BN) composites were prepared by solution method using CuSO4/glycine chelate complex as the catalysis with variable percentage of boron nitride loading. The dispersion of BN with the chitosan polymer was achieved with sonication at power of 120 W and frequency of 80 kHz. The chemical interactions of chitosan and BN were studied by Fourier transform infrared spectroscopy. The structure of chitosan and BN composites were investigated by XRD and TEM. It was observed that the BN were dispersed with chitosan matrix through intercalation. The quantitative identification of composites was investigated by Energy Dispersive X‐ray Spectroscopy and Selected Area Electron Diffraction. Thermal stabilities of chitosan/BN composites were studied by thermogravimetric analysis. It was found that, the thermal stability of the chitosan/BN composites was increased compare with virgin chitosan. The oxygen barrier properties of chitosan/BN composites were measured using gas permeameter. A substantial reduction in oxygen permeability was observed increasing boron nitride concentrations by which the synthesized composite materials may applicable in packaging industry.

Effect of SiC Nanoparticles on Thermal and Oxygen Barrier Properties of Albumin Bovine Protein

“…Albumin=SiC nanobiocomposites were prepared by a solution method using CuSO 4 =glycine chelate complex as per our earlier method [28] with different percentages of silicon carbide. A 1% (w=v) stock solution of albumin bovine was prepared in double-distilled water.…”

Boron nitride nanosheets as barrier enhancing fillers in melt processed composites

“…38,[43][44][45] One of the most important applications of 2D fillers in polymer-based composites are as barrier materials to reduce the permeability of the material to gases. 53 Recently, it has been reported that solution processing can be used to mix h-BN with a range of materials, including gelatin, cellulose, chitosan and soy protein, [54][55][56][57] resulting in improvements in their barrier properties. 46 Due to their low cost, high aspect ratio and low toxicity, nanoclays have been well-studied as barrier-enhancing fillers for polymers.…”

Dielectric Properties of Boron Nitride in THz Region Synthesized with Nonenergetic CVD

“…[1][2][3][4][5][6] For instance, the hBN has its analogue in graphite; it is white, insulating, soft, and lubricating. There are four known different modifications, cubic boron nitride (cBN), wurtzite boron nitride (wBN), hexagonal boron nitride (hBN), and rhombohedral boron nitride (rBN).…”

“…The hBN and rBN have layered structures with lower density than cBN and wBN. [1][2][3][4][5][6] For instance, the hBN has its analogue in graphite; it is white, insulating, soft, and lubricating. It has a density comparable to graphite and a high degree of anisotropy; for example, the conductivity in the "a" direction is higher than in the "c" direction by a factor of about 20.…”