Effect of PET Melt Spinning on TiO₂ Nanoparticle Aggregation and Friction Behavior of Fiber Surface

Abstract

Poly(ethylene terephthalate) (PET) was incorporated with different amounts of TiO2 nanoparticle and then spun into fibers of different diameters. Surface properties of these modified fibers were investigated by friction force, scanning electron microscopy, energy dispersive X-ray analysis, and electron spectroscopy for chemical analysis (ESCA). TiO2 nanoparticles showed aggregation on the fiber surface. The number of aggregates increased as the amount of TiO2 nanoparticle increased and/or the diameter of spun fiber decreased. These were evidenced from SEM and also from an increased C(1s)/O(1s) ratio in the ESCA spectra. The aggregates of TiO2 nanoparticle on the fiber surface cause unevenness, leading to a decreased friction-contact area between surface of the sliding fiber and its encountered surface. Thus, the friction force that arose from the interface reduced. In addition, on the basis of different amounts of TiO2, a broad range of fiber frictions could be formed. This would provide promise to potential performance in fiber industry.

Heat-regulating polylactic acid/silica aerogel composite fabric: Preparation and characterization

“…As global demand for textiles grows, the potential environmental effects resulting from their production, use, and disposal increase accordingly [1][2][3]. Textile fibers are primarily made from petrochemical materials, such as polyethylene terephthalate (PET) [4], nylon [5], and polypropylene [6]. Unused textile fibers are typically incinerated, which contributes to environmental pollution [7,8].…”

Preparation and Properties of Opaque Polyethylene Terephthalate/TiO2 Filaments

“…Surface morphology of the yarns with TiO2 differed from that without TiO2 additive. Huang et al [7] blended TiO2 into PET fibers at different proportions to make semifinished products by melt spinning. The structures of TiO2 on fiber surface were explored by the scanning electron microscopy and energy dispersive X-ray spectroscopy.…”

Preparation, Friction, and Wear Behaviors of Cerium-Doped Anatase Nanophases in Rapeseed Oil

“…Over the past decades, nanostructure materials have attracted much interest due to the special chemical and physical properties. − In the field of tribology, much effort has been paid to the development of inorganic nanoparticles as lubricant additives, such as sulfide, , fluoride, − oxide, − metal, and borate nanoparticles. , However, the poor dispersibility of inorganic nanoparticles in base oil has restricted their applications as lubricant additives. The surface modification technology has also been widely adopted to improve the dispersibility of lubricant additives in base oil. , Among various inorganic nanoparticles as lubricant additives, TiO 2 nanoparticles have obtained great attention owing to excellent tribological properties, nontoxicity, low cost, and high chemical stability. , Previous investigations about the tribological performance of TiO 2 mainly focused on that of rutile. − Relatively few reports are currently available about the tribological behaviors of anatase nanophases as lubricant additives.…”