Boron nitride nanotubes enhance mechanical properties of fibers from nanotube/polyvinyl alcohol dispersions

Abstract

BNNTs/PVA fibers with improved mechanical properties are produced from the wet spinning of dispersions containing as low as 0.1 mass% of nanotube concentration.

Influence of the graft-copolymerized hydrophilic lignin content on the structure and mechanical properties of gel-spun poly(vinyl alcohol) composite fibers

“…To effectively demonstrate the influence of modified hydrophilic lignin on the mechanical performance of composite fibers, Figure S3(b) has been plotted to compare the mechanical properties of composite fibers with similar fibers from the literature. 31–34 The 5% and 10% OL 24 /PVA composite fibers had a tensile strength in the range of 0.9–1.14 GPa and Young’s modulus in the range of 16–21 GPa. These values are obviously higher than those of lignin/PAN fibers (tensile strength of 650–830 MPa, modulus of 16–18 GPa) 32 and PVA fibers containing different fillers, such as cellulose nanocrystals (CNCs) (tensile strength of 273–356 MPa, modulus of 15–18 GPa), 33 multiwall carbon nanotubes (MWNTs) (tensile strength of 490–740 MPa, modulus of 7.8–12.8 GPa) 34 and boron nitride nanotubes (BNNTs) (tensile strength of 740–835 MPa, modulus of 10.6–7.4 GPa).…”

“…These values are obviously higher than those of lignin/PAN fibers (tensile strength of 650-830 MPa, modulus of 16-18 GPa) 32 and PVA fibers containing different fillers, such as cellulose nanocrystals (CNCs) (tensile strength of 273-356 MPa, modulus of 15-18 GPa), 33 multiwall carbon nanotubes (MWNTs) (tensile strength of 490-740 MPa, modulus of 7.8-12.8 GPa) 34 and boron nitride nanotubes (BNNTs) (tensile strength of 740-835 MPa, modulus of 10.6-7.4 GPa). 31 Thus, modified hydrophilic lignin in this work is effective in improving the mechanical performance of polymeric fibers.…”

Trilateral Multi-Functional Polyamide 12 Nanocomposites with Binary Inclusions for Medical Grade Material Extrusion 3D Printing: The Effect of Titanium Nitride in Mechanical Reinforcement and Copper/Cuprous Oxide as Antibacterial Agents

“…Carbides and nitrides are known for their advanced mechanical properties, and therefore they are used in various forms as parts. They operate in demanding environments, such as in cutting tools [ 36 ], as coatings [ 37 ], due to their hardness [ 38 ], in titanium implants to enhance the mechanical properties of the implant [ 39 ], and in nanoscale and nanofiber form as an additive to enhance the mechanical properties of the materials [ 40 , 41 ]. Titanium nitride (TiN) is a nitride used in different types of applications, such as optical applications [ 42 , 43 , 44 , 45 , 46 ], coatings and films due to its wear resistance capabilities [ 47 , 48 , 49 ], energy and electrical applications [ 50 , 51 ], and in healthcare applications [ 52 ].…”

Polymer Fibers Highly Filled with Styrene Maleic Anhydride-Modified PbWO4 for Improved Wear Comfort of γ-ray-Shielding Articles

“…Importantly, PVA main chains with a mass of hydroxy groups offer sufficient promise to achieve uniform dispersion of fillers and good compatibility of interfaces in composites . Thus, it is important to develop rich hydrogen-bond interactions between PVA and functional fillers. − Generally, inorganic particles such as multiwalled carbon nanotubes, boron nitride, and nano-hydroxyapatite with plain surface modification tend to intensify the interaction with PVA for spinning stability. − However, agglomeration of fillers and defects such as voids tend to form in highly filled PVA-based composites. , This is because lack of intense interfacial interactions allows for the uniform dispersion of fillers and good compatibility of interfaces in the composites.…”