Polyacrylonitrile/UV329/titanium oxide composite nanofibrous membranes with enhanced UV protection and filtration performance

Abstract

Multifunctional polyacrylonitrile/UV329/TiO2 membranes were synthesised. An easy one-step electrospinning process was adopted. Composite membranes exhibited UV protection and air-filtering properties.

Poly(3-hydroxybutyrate)/Poly(lactic acid) Composite Nanofibrous Membrane with Outstanding Photochromic and Antibacterial Performances for Multifunctional Applications

“…This exceptional filtration performance was attributed to multiple mechanisms including gravitational settling, interception effect, diffusion deposition, electrostatic deposition, and inertial deposition . The increased thickness also contributed to the notable filtration efficiency by providing more nanofiber content per unit area and enhancing the separation and trapping effect of the particles . However, as the spinning time increased, so did the pressure drop corresponding to the thickness of the OA-PHB/PLA NFM@PLA composites.…”

“…37 The increased thickness also contributed to the notable filtration efficiency by providing more nanofiber content per unit area and enhancing the separation and trapping effect of the particles. 38 However, as the spinning time increased, so did the pressure drop corresponding to the thickness of the OA-PHB/PLA NFM@PLA composites. After spinning for more than 3 h, there was a decrease in QF at a flow rate of 32 L/min, indicating a decline in filtration performance (Figure 5k).…”

Extremophilic Solutions: The Role of Deinoxanthin in Counteracting UV-Induced Skin Harm

“…UVB radiation predominantly targets the skin's superficial layers, causing noteworthy damage. Studies have corroborated that it results in erythema and direct modifications to DNA, consequently augmenting the susceptibility to skin cancers, predominantly basal cell and squamous cell carcinomas [46][47][48][49][50]. In contrast, UVA radiation, while considered less damaging superficially than UVB, penetrates deeper into skin tissues, influencing collagen synthesis and structural integrity [50,51].…”

Nanodiamond-Reinforced Polyurethane Micro/Nanofiber Membrane for UV Protection in Multifunctional Textiles

“…To improve the UV protection of wearable fabrics, complex after treatments are normally applied to fabrics before forming, and some UV absorbers 13 or UV shields are used to provide excellent UV protection to fabrics through the exhaust process, coating process, 14−17 and immersion and binding process. 18,19 Lu et al 20 used poly(dopamine) (dPDA) oligomer as the active UV absorber, which was doped into poly(vinyl alcohol) (PVA) matrix by solvent casting to prepare a highly transparent UV shielding membrane.…”

“…To improve the UV protection of wearable fabrics, complex after treatments are normally applied to fabrics before forming, and some UV absorbers or UV shields are used to provide excellent UV protection to fabrics through the exhaust process, coating process, − and immersion and binding process. , Lu et al used poly­(dopamine) (dPDA) oligomer as the active UV absorber, which was doped into poly­(vinyl alcohol) (PVA) matrix by solvent casting to prepare a highly transparent UV shielding membrane. Cheng et al successfully prepared multilayer micro/nanocomposite membranes with excellent UV protection properties by depositing negatively and positively charged TiO 2 nanoparticles on poly­(ethylene terephthalate) (PET) membranes.…”