Nacre-Inspired Strong and Multifunctional Soy Protein-Based Nanocomposite Materials for Easy Heat-Dissipative Mobile Phone Shell

Abstract

Inspired by the hierarchically ordered “brick and mortar” (BM) architecture of natural nacre, in this study a rational assembly of boron nitride (BN) nanosheets was introduced into a mixture of trimethylolpropane triglycidyl ether (TTE) and soy protein isolate (SPI), and a strong and multifunctional SPI-based nanocomposite film with multinetwork structure was synthesized. At a low BN loading (<0.5%), the resulting multifunctional film was flexible, antiultraviolet, and nearly transparent and also displayed good thermal diffusion ability and exhibited an excellent combination of high tensile strength (36.4 MPa) and thermal conductivity (TC, 2.40 W·m–1·K–1), surpassing the performances of various types of petroleum-based plastics (displayed a tensile strength ranging from 1.9 to 21 MPa and TC ranging from 0.55–2.13 W·m–1·K–1), including nine different types of materials currently utilized for mobile phone shells, suggesting its vast potential in practical applications.

Development of a multifunctional nanocomposite film with record-high ultralow temperature toughness and unprecedented fatigue-resistance

“…Natural creations, such as nacre, bone, lobster cuticle, muscles, and spider silk 16,17 present outstanding mechanical properties with a high-level combination of stiffness and toughness 18 .Most of them are composites with orderly hierarchical architectures that arrest crack propagation to prevent catastrophic failure 19 . These natural materials provide endless inspiration for the fabrication of novel bioinspired structural materials 20 . One typical example is spider silk 21 , which exhibits a combination of high mechanical strength and high toughness at ultralow temperature.…”

A biosensor material with robust mechanical properties, fatigue-resistance, biocompatibility, biodegradability, and anti-freezing capabilities

“…3a, the SPI-based lm materials showed typical absorption peaks of amide I (C]O stretching), amide II (N-H bending) and amide III (C-N and N-H stretching). 22 Addition of BT@Ag to the SPI-based lm materials (Fig. 3a) blue-shied the peak at 3242 cm À1 to 3289 cm À1 .…”

“…18 Unfortunately, pure protein materials generally present poor mechanical properties and conductivity, 19,20 usually limiting their applications in wearable strain sensors. 21,22 As a result, a relatively high amount of the conductive ller has to be used to improve the conductivity and strength of the SPI-based lm material. 21 Ceramic llers such as BaTiO 3 (BT) are oen incompatible with the polymer matrix due to the signicant difference in surface energy and poor polymer-particle interfacial interactions.…”

“Green” Flexible Electronics: Biodegradable and Mechanically Strong Soy Protein-Based Nanocomposite Films for Human Motion Monitoring

“…However, there is always a trade-off between mechanical properties and flexibility of the composites; for example, aggregation of protein and excessive nanofillers could make the resulting composites stiff and brittle . Furthermore, nanoparticles are also prone to agglomeration due to their high surface energy, creating more resistance to their uniform dispersion in the soy protein substrate. , To date, it is still challenging to facilitate the dispersion of nanofillers for the development of a conductive soy protein-based material with good toughness and strength.…”

“…23 resistance to their uniform dispersion in the soy protein substrate. 25,26 To date, it is still challenging to facilitate the dispersion of nanofillers for the development of a conductive soy protein-based material with good toughness and strength. It has been found that multifunctional organic shell layers could be constructed on the surface of the nanofillers via electrostatic interaction or hydrogen bond to reduce the surface energy.…”