Synergistic effect of hybrid hydroxylated boron nitride and cellulose nanocrystals for enhancing the thermal, mechanical, and hydrophobic properties of composite film

Abstract

Hybrid composite films are largely preferred over neat films because of their superior thermal, mechanical, chemical, and hydrophobic properties. The hybrid composite film has a wide range of use, including space, defense, electronics, packaging, and engineering applications. Fabricating multifunctional hybrid composite films with biodegradable polymer and biodegradable filler such as cellulose nanocrystals has become popular in recent years as an alternative to conventional plastics. In this paper, hybrid hydroxylated boron nitride (BN) nanoparticles with CNC nano‐filer reinforced composite PVA films were fabricated. The obtained composite films were characterized for morphological, chemical, physical, thermal, and hydrophobic properties. The morphological analysis indicates that the hybrid nano‐filler was well dispersed in the poly(vinyl alcohol) (PVA) matrix. The reaction and hydrogen bond interactions between CNC and BN in composite films are confirmed by the Fourier transform infrared spectroscopy and x‐ray diffraction pattern. The contact angle method is used to confirm the enhancement of the hydrophobic property. The physical properties of the composite films and neat PVA film were analyzed by tensile test method using a universal testing machine. The thermal stability of the neat PVA film and the composite films were analyzed by the thermo‐gravimetric analysis method. The effect of hybridization of nanoparticles on the thermal, mechanical, and hydrophobic properties was studied. The hybrid composite film with enhanced properties allows it for multifunctional applications.

Preparation and properties of three‐dimensional boron nitride submicron tube/epoxy resin composites with high thermal conductivity

“…There was a strong peak at 1378.8 cm −1 , which corresponds to the in‐plane stretching vibration peak of the BN bond, and the characteristic absorption peak at 809.9 cm −1 corresponds to the out‐plane bending vibration peak of the BN bond. [ 31 ] The weak absorption peak at 3440.2 cm −1 was due to the adsorption of moisture in the air on the BNST surface, which leads to the tensile vibration peak of the O‐H bond. [ 32 ] Figure 3C was the Raman spectra of BNST.…”

Investigating thermal conductivity and mechanical properties of a hybrid material based on cellulose nanofibers and boron nitride nanotubes using molecular dynamics simulations

“…This research calls for further studies to fabricate cellulose and BNNTs-based composites and obtain functional materials having increased thermal conductivity and superior mechanics. Such novel hybrids might be utilized in numerous future applications [47][48][49][50][51][52][53][54][55] pertaining to separators, flexible electronics, sensing, and thermal management.…”

Recent advances in cellulose nanocrystals-based sensors: a review

“…8,36,[57][58][59][60][61][62][63][64][65] Recently, there has been growing interest in nano-cellulosic materials due to their versatile applications and unique properties. 7,36,[66][67][68] Consequently, cellulose is a promising material for developing sensors that exhibit enhanced sensing sensitivity. 69 The cellulose structure is characterized by a polymer with a linear chain consisting of 1,4-glycosidic linkages between D-glucopyranose subunits.…”