Regenerated cellulose/layered double hydroxide nanocomposite films with improved mechanical property

Abstract

Construction of environment‐friendly biomass‐based nanocomposites with high performance is in great demand for developing of a sustainable low‐carbon society. Here, transparent and flexible regenerated cellulose (RC)/layered double hydroxide (LDH) nanocomposite films were prepared from aqueous NaOH/urea solutions. The obtained nanocomposite films were characterized using AFM, SEM, FTIR, XRD, tensile testing, water contact angle, and thermogravimetric analysis. The results show that LDH nanoplatelets were individually dispersed with a thickness of 1 nm and surface diameter of 100 nm after ultrasonic treatment. Strong interaction existed between LDH nanoplatelets and cellulose molecules, leading to the improved thermal stability and mechanical strength of RC together with the original good properties of LDH. In particular, the nanocomposite films with 10 wt% LDH showed a 135% and 234% increase in the tensile strength and Young's modulus than those of the neat RC film. Meanwhile, the nanocomposite films exhibited high transparency. Therefore, these RC/LDH nanocomposites are promising in the fields of high‐performance packaging materials, flexible display panels, and high‐temperature dielectric materials.

Guanidine-based protic ionic liquids as highly efficient intermolecular scissors for dissolving natural cellulose

“…Moreover, it maintained high tensile strength and Young's modulus of 114.6 MPa and 4.9 GPa, respectively, as shown in Fig. 7f, which is very attractive compared with other regenerated cellulose systems, [49][50][51][52][53][54][55][56][57][58][59][60][61][62][63][64] although the available data are limited. However, it is necessary to note that the regenerated cellulose film in this work is not regulated via a strict regeneration process.…”

Luminescent transparent wood from a woody cellulosic template treated with an optical brightener

“…The properties of TW are dependent on several factors including method of fabrication, kind of polymers used, orientation of wood, lamination, and density of wood. TW is considered a potential replacement for glass in commercial and residential buildings as thermally insulating windows and/or rooftops that reduce energy consumption to maintain indoor temperature while providing consistent and soothing lighting effect during day‐time 12–18 . In addition, optically functionalized TW finds application as an advanced engineering material in the field of optics, optoelectronics, photonics, fluidics, energy, architecture, and so forth 12,19–26 …”

“…TW is considered a potential replacement for glass in commercial and residential buildings as thermally insulating windows and/or rooftops that reduce energy consumption to maintain indoor temperature while providing consistent and soothing lighting effect during daytime. [12][13][14][15][16][17][18] In addition, optically functionalized TW finds application as an advanced engineering material in the field of optics, optoelectronics, photonics, fluidics, energy, architecture, and so forth. 12,[19][20][21][22][23][24][25][26] TW is prepared by removing lignin and resinous compounds from the wood substrate followed by impregnation of a polymer of matching refractive index into the resulting highly ordered cellulose framework.…”

Crystallization behavior of polyvinyl alcohol with inorganic nucleating agent talc and regulation mechanism analysis

“…It is a kind of polyhydroxy polymer with excellent comprehensive performance [1,2]. In recent times, due to the attention paid to environmental issues, biodegradable and environmentally friendly materials have attracted the attention of researchers [3][4][5][6][7]. PVA has been extensively studied as a material with excellent properties and is widely used in industrial, commercial, medical and food applications, including paper sheets, surgical threads, resins and food packaging [8][9][10][11].…”