UV-A Transmittance Research Articles

A sustainable strategy for promoting the colour strength and ultraviolet/oxidation resistance of polylactic acid fabric integrating quercetin and food-grade ester

The combination of green chemicals with biodegradable polymers is highly encouraged to enhance the sustainability of textiles and their manufacturing process. Polylactic acid (PLA) is a promising biodegradable polymer to replace petroleum-based fibres and fabrics. However, to enhance the compatibility between PLA and bio-based dyes or finishes is still a challenging issue. This study achieves a simultaneous bio-colouration/finishing on PLA using quercetin, especially focusing on the adsorption enhancement with a food-grade methyl cinnamate (MC). Results show that the exhaustion of quercetin on PLA is significantly enhanced from 26% to 64% using MC. At similar concentrations, MC enables much better colour depth (K/S) improvement on PLA than synthetic n-amyl acetate. The factorial significance follows the order: MC concentration > quercetin concentration > temperature. Under the optimal condition (0.97 g/L quercetin, 3.0 g/L MC, at 103.5 oC), a theoretical highest K/S of 6.15 can be achieved. PLA treated with quercetin/MC displays much higher b* value than that of the PLA only treated with quercetin. MC also increases colour uniformity of the PLA treated with quercetin. Quercetin/MC efficiently decreases UVB and UVA transmittance of PLA and reaches the UPF 50 + rating. Around 98% of free radicals were scavenged by 10%owf quercetin/MC treated PLA in 30 min. The marginal tensile loss (<5%) of PLA after treatment is acceptable in wet processing. In all, the strengthened colour shade and functionality of PLA using MC stemms from the adsorption enhancement, which expands the applicable area of PLA.

Chitosan Oligosaccharide Based Waterborne Polyurethane with UV Resistance and Oxidation Resistance for Functional Fabric

AbstractChitosan oligosaccharide (COS) is an abundant polysaccharide in nature, which has various functions such as antioxidant and antibacterial. The possibilities of using COS can be extended by applying it to polyurethane materials. Herein, Chitosan oligosaccharide‐based waterborne polyurethane (CWPU) with intramolecular crosslinking network is prepared by using COS as chain extender. The mechanical properties of CWPU are improved, with tensile strength and elongation at break reaching 14.83 MPa and 449.63%, respectively. The DPPH free radical scavenging rate of CWPU increases from 8.43% to 70.98%, indicating that CWPU has favorable antioxidant performance. The tensile strength of the CWPU‐treated fabrics obtained by the padding method improve from 542.77 to 605.33N and there is no significant change in the whiteness of the fabric. Furthermore, the CWPU‐treated fabrics, with the UV protection factor of 30.39 and the UVA transmittance below 3%, can be used as UV‐protective fabrics. This work introduces COS into the molecular structure of polyurethanes to obtain functional PUs, expanding the application of COS in polyurethanes.

Kevlar® and Nomex® modification via 2,4-dihydroxybenzophenone anchoring improves water repellency and induces antibacterial and UV protection properties

Aramid materials, such as Kevlar® and Nomex®, are aromatic polyamides exhibiting excellent chemical and mechanical properties. Because of their demanding applications, it is essential to enhance their water repellency, their endurance to UV radiation, as well as their antibacterial properties, while simultaneously preserving or even strengthening their durability. The present work describes the successful modification of aramid materials, in a way that improves the final product, by inducing the desired properties without significantly affecting the existing ones. The synthesis of a model compound simulating aramid materials is carried out followed by thorough studies, thus leading to a better understanding of the behavior of aramid materials at the molecular level, as well as to their optimal modification conditions. Subsequently, the attachment of 2,4-dihydroxybenzophenone to Kevlar® and Nomex® fabrics, using epichlorohydrin as the anchoring moiety, along with detailed characterization, via IR and Raman spectroscopies, thermogravimetric analysis, and SEM imaging, are implemented. The wettability of the modified materials is determined by the water contact angle test, to probe their hydrophilicity or hydrophobicity. The antibacterial protection of the modified aramid materials is determined qualitatively against the Gram-negative bacterium E. coli DH5α and quantitatively according to an in situ method, using cyanobacterium Synechococcus sp. PCC7942. Moreover, the UV protection properties of the modified fabrics are studied by using the UV protection factor (UPF) and average UV-A and UV-B transmittance, while their ultimate strength is found well-preserved.

Assessment of UV Protection for Children's Summer Clothing.

Excess ultraviolet (UV) radiation exposure during childhood poses a particular long-term risk of developing skin cancer later in life however recent studies have called attention to the absorption of chemical sunscreen ingredients into the bloodstream with unclear significance.This has led to recommendations to consider sun protection in the form of clothing to reduce the need for sunscreen products. Ten brands of routine summer clothing not labeled as sun protective from five distributors marketed for children were identified with varying price ranges.Summer clothing items consisting of T-shirts and tops were evaluated for fiber composition, cost, and UPF testing was performed to determine UVA and UVB transmittance. Results: Around 88.2% of blended textile compositions compared to 60% of 100% cotton textiles offered adequate UV protection with an Ultraviolet Protection Factor (UPF) greater than 15. 58% of blended fabrics compared to 50% of cotton textiles offered a UPF greater than 30. There was no correlation between brand and cost with UPF values. Conclusions: In the absence of regulations for testing and labeling of all children's garments for UV protection, guidelines for the pediatric population for choosing clothing for the summer should reflect the information available to consumers that is easy to understand and more likely to result in higher UPF values.Based on fiber composition, blended textiles are more likely to have adequate UV protection compared to 100% cotton or 100% polyester.

Preparation and Performance of Pueraria lobata Root Powder/Polylactic Acid Composite Films

Petroleum-based materials, such as plastic, are characterized by adverse environmental pollution; as a result, researchers have sought alternative degradable plastics that are environmentally friendly, such as polylactic acid (PLA). PLA has shown great potential to replace petroleum-based plastics. In this study, seven different samples of unmodified Pueraria lobata root powder (PRP) with different contents (i.e., 0, 5, 10, 15, 20, 25, and 30 wt%) and three different modified PRPs (i.e., treated with NaOH, NaOH-KH-550, and Formic) were used to reinforce polylactic acid (PLA) via solution casting process. These prepared PRP/PLA composite films were characterized using SEM, FTIR, UV-visible spectra analysis, TG, DSC, weight loss measurement (wt%), and mechanical measurements. The results showed that the PRP modified with KH-550 (PRPK) intensified the interaction in the interface region between the PRP and the PLA matrix, thus increasing the tensile strength (54.5 MPa), elongation at break (2.8%), and Young’s modulus (3310 MPa) of the PRPK/PLA biofilms. Contact angle measurement showed that the PRP treatments contributed to the hydrophobicity of films. The transparency of PRP-10/PLA film at λ800 was 11.09%, and its UVA and UVB transmittance were 3.28 and 1.16, respectively. After blending PLA with PRP, the PRP/PLA composite films exhibited excellent biodegradability. In summary, PRPK improved the mechanical properties of PLA and prevented the films from ultraviolet light, suggesting that PRPK-5/PLA film could be used as packaging materials.

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

Ultraviolet (UV) radiation is extremely dangerous to humans and can contribute to immunosuppression, erythema, early ageing and skin cancer. UV protection finishing may greatly influence the handling and permeability of fabrics, while UV-proof fibres can guarantee close contact between UV-resistant agents and fabric without affecting the handling of the fabric. In this study, polyacrylonitrile (PAN)/UV absorber 329 (UV329)/titanium dioxide (TiO2) composite nanofibrous membranes with complex, highly efficient UV resistance were fabricated via electrospinning. UV329 was included in the composite to further strengthen the UV resistance properties via absorption function, while TiO2 inorganic nanoparticles were added to provide UV shielding function. The presence of UV329 and TiO2 in the membranes was confirmed using Fourier-transform infrared spectroscopy, which also showed the absence of chemical bonds between PAN and the anti-UV agents. The PAN/UV329/TiO2 membranes exhibited a UV protection factor of 1352 and a UVA transmittance of 0.6%, which indicate their extraordinary UV resistance properties. Additionally, filtration performance was investigated in order to expand the application field of the UV-resistant PAN/UV329/TiO2 membranes, and the composite nanofibrous membranes showed a UV filtration efficiency of 99.57% and a pressure drop of 145 Pa. The proposed multi-functional nanofibrous membranes have broad application prospects in outdoor protective clothing and window air filters.

ATR-FTIR, SAXS and UV-Vis Studies of Silicone Hydrogel and Bio-Hydrogel Soft Contact Lenses

Aims: This study aimed to evaluate the effect of contact lens materials on the structural properties and to examine ultraviolet (UVA part) and visible (Vis) transmittance with and without UV filters of the commercially available silicone hydrogel (SiHy) and bio-hydrogel (bio-Hy) soft contact lenses (CLs) in vitro.&#x0D; Place and Duration of Study: Hacettepe University, Department of Physics, Ankara, Turkey, between May 2018 and May 2021.&#x0D; Methodology:Attenuated Total Reflectance Fourier Transform Infrared (ATR-FTIR) spectra of CLs were recorded (at removing from its package, after 10 min, 1 h and 1 day at room temperature) in the 4000-650 cm-1region to estimate water contents of CLs. Hierarchical Cluster Analysis (HCA) was performed to differentiate chemical structure of CLs based on the spectral differences. Ultraviolet (UVA) and visible light transmittance of (CLs) was measured in the 315 -800 nm region. Small Angle X-ray Scattering (SAXS) analyses were performed to obtain further structural information on nano-scale. &#x0D; Results: One of the key observations in this study is the large influence of lens water content. The HCA analysis grouped all the CLs of same brand in same cluster based on their chemical similarity. The UVA transmittance results showed that CLs with UV blockers almost met ClassI and ClassII standards. The size (11.8-39.9 nm) and differences in morphologies of the nano globules were determined and correlated with equilibrium water content (EWC).&#x0D; Conclusion: This work was designed to explain important characteristics of commercial CLs and results will have implications for future experimental and clinical research regarding hydration/ dehydration experiments with CL polymers.

Enhancing the thermostability, UV shielding and antimicrobial activity of transparent chitosan film by carbon quantum dots containing N/P

The chitosan (CS) transparent film has attracted much attention in food and medicine packaging areas due to their biodegradability and good availability. A novel carbon quantum dots compound containing nitrogen and phosphorus (NP-CQDs) was obtained by reacting citric acids, with urea and phytic acids. The density of the film was increased, and the water vapor permeation was reduced by the presence of NP-CQDs. The introduction of 4 wt% NP-CQDs increased the water contact angle of the CS film from 79.2° to 105.8°. The shielding on UV-A and UV-B transmittance was increased with the NP-CQDs loading. The film containing 4 wt% NP-CQDs blocked more than 90.2% UV-A and 96.5% UV-B; however, it only blocked 26.8% visible light. It also exhibited better antibacterial activity to both E. coli and S. aureus than the control CS film. This work provided a feasible way to prepare multifunctional bio-safe film.

Development and characterisation of packaging film from Napier cellulose nanowhisker reinforced polylactic acid (PLA) bionanocomposites

A packaging material that is environment-friendly with excellent mechanical and physicochemical properties, biodegradable and ultraviolet (UV) protection and thermal stability was prepared to reduce plastic waste. Six different concentrations of Pennisetum purpureum/Napier cellulose nanowhiskers (NWCs) (i.e. 0, 0.5, 1.0, 1.5, 2.0, and 3.0 wt%) were used to reinforce polylactic acid (PLA) by a solvent casting method. The resulting bionanocomposite film samples were characterised in terms of their morphology, chemical structure, crystallinity, thermal degradation and stability, light transmittance, water absorption, biodegradability, and physical and mechanical properties. Field-emission scanning electron microscopy showed the excellent dispersion of NWC in the PLA matrix occurred with NWC concentrations of 0.5–1.5 wt%. All the bionanocomposite film samples exhibited good thermal stability at approximately 343–359 °C. The highest water absorption was 1.94%. The lowest transparency at λ800 was 16.16% for the PLA/3.0% NWC bionanocomposite film, which also has the lowest UVA and UVB transmittance of 7.49% and 4.02%, respectively, making it suitable for packaging materials. The PLA/1.0% NWC film exhibited the highest crystallinity of 50.09% and high tensile strength and tensile modulus of 21.22 MPa and 11.35 MPa, respectively.

Evaluation of Enhanced UV Protection Property of Dyed Cotton Fabrics Based on Inclusion Complex of β-cyclodextrin with Natural Coumarin Extracted from Cortex fraxini

Inclusion complex formed between β-cyclodextrin (β-CD) and natural coumarins extracted from Cortex fraxini were utilized to dye and enhancing the UV protection properties of cotton fabric. Natural coumarins were extracted from Cortex fraxini and the total amount of natural coumarins was evaluated. The inclusion complex of natural coumarins with β-CD were formed and analyzed by ultraviolet-visible spectrum, fluorescence spectroscopy, FTIR and TGA. The obtained results showed that a stoichiometry of 1:1 inclusion complex was formed and the fluorescence intensities and ultraviolet absorption of the natural coumarins were both enhanced by incorporating into β-CD. β-CD was grafted onto cotton fabric based on esterification of citric acid with cellulose and cyclodextrin in the presence of sodium hypophosphite. The grafted cotton fabric was then dyed with natural coumarins extraction of Cortex fraxini as natural ultraviolet absorbent to form stable inclusion complex. UV protection factor (UPF), UVA transmittance (TUVA) and UVB transmittance (TUVB), wrinkle recovery and tensile strength of dyed fabrics were evaluated and demonstrated that graft modification of fabrics with β-CD resulted enhancement in UV protection property and durability accompanied with increasing in wrinkle recovery properties and decreasing in tensile strength. Furthermore, apparent morphology, FTIR and TGA analysis of inclusion complexes loaded cotton fabrics and the relationship between structure and properties were investigated.

UV-Protective, Self-Cleaning, and Antibacterial Nanofiber-Based Triboelectric Nanogenerators for Self-Powered Human Motion Monitoring.

Equipping wearable electronics with special functions will endow them with more additional values and more comprehensive practical performance. Here, we report an ultraviolet (UV)-protective, self-cleaning, antibacterial, and self-powered all-nanofiber-based triboelectric nanogenerator (TENG) for mechanical energy harvesting and self-powered sensing, which is fabricated with Ag nanowires (NWs)/TPU nanofibers and the TiO2@PAN networks through a facile electrospinning method. Due to the added TiO2 nanoparticles (NPs), the TENG presents excellent UV-protective performance, including the ultraviolet protection factor (UPF) of ∼204, the transmittance of UVA (TUVA) of ∼0.0574%, and the transmittance of UVB (TUVB) ∼0.107%. Furthermore, under solar lighting for 25 min, most surface contamination can be degraded, and the decreased power output would be recovered. Owing to the coupled effects of TiO2 NPs and Ag NWs, the TENG shows excellent antibacterial activity against Staphylococcus aureus. Due to the micro-to-nano hierarchical porous structure, the all-nanofiber-based TENG can serve as self-powered pedometers for detecting and tracking human motion behaviors. As a multifunctional self-powered device, the TENG prompts various applications in the fields of micro/nanopower sources, human movement monitoring, and human-machine interfaces, potentially providing an alternative energy solution and a multifunctional interactive platform for the next-generation wearable electronics.

UVB, UVA, and visible light (blue-violet range) transmittance of clothing used in Brazil

UVB, UVA, and visible light (blue-violet range) transmittance of clothing used in Brazil

Analysis on Transmittance by Material according to the Use Period of Spectacle Lens

Purpose : The purpose of this study were to investigate the transmittances of ultraviolet light and visible light according to materials used for spectacle lenses. Methods : A total of 118 transparent spectacle lenses of 5 companies being used were applied. The period of use was divided into three groups : less than 1 year, 1 year or more but less than 2 years and more than 2 years. The refractive index was also divided into the Medium refractive index(1.55~1.56), the High refractive index(1.60) and the Ultra High refractive index(1.67~ 1.74). The transmittance of UV(200~380) and visible light(380~780nm) of the spectacle lens was measured using the Topcon TM-1. Results : The UV, UVA, UVB and visible light transmittance measurements were compared according to the materials for each period of use. There was no significant difference in the transmittance measurements according to the material of the spectacle lens with the use period of less than 1 year (p=0.189, p=0.197, p=0.081, and p=0.073). The UV, UVA, and visible light transmittance measurements showed statistically significant differences according to the material of the spectacle lens with the use period of 1 year or more and less than 2 years(p=0.001, p=0.001, and p=0.003). There was no significant difference in the transmittance measurements according to the material of the spectacle lens with the use period of more than 2 years (p=0.673, p=0.674, p=0.982, and p=0.138). Conclusion : As a result of this study, there was a difference in the transmittance of each material according to the use period of the spectacle lens. Therefore, it may be helpful to select material and the use period of eyeglass lens.

Transmittance of UVB, UVA, and visible light (blue-violet) among the main Brazilian commercial opaque sunscreens

Transmittance of UVB, UVA, and visible light (blue-violet) among the main Brazilian commercial opaque sunscreens

Titanium dioxide/quaternary phosphonium salts/polyacrylonitrile composite nanofibrous membranes with high antibacterial properties and ultraviolet resistance efficiency

In this paper, titanium dioxide (TiO2)/quaternary phosphonium salts (QPS)/polyacrylonitrile (PAN) composite nanofibrous membranes were prepared through electrospinning to fabricate organic and inorganic complex highly efficient antibacterial and ultraviolet (UV)-resistant membranes. The composite material derived from QPS was designed effectively kill bacteria and improve quaternary ammonium salts’ drug-resistant problem, while the addition of TiO2 can absorb ultraviolet light to catalyze sterilization and decompose residues. The obtained membranes were characterized by scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), Fourier transfer infrared spectroscopy (FTIR), thermogravimetric analysis (TG), ultraviolet protection factor (UPF), and antibacterial tests. SEM images indicate slim and uniform morphology of fibers with a diameter of 0.1–0.2 um. FTIR and XPS tests confirm the existence of QPS and TiO2 compounds in the composite membranes, and there is no chemical bond between these substrates and PAN. TG test implies that the membranes have a good thermal stability. UPF of 1648.1 and UVA transmittance of 0.28% indicate that the TiO2/QPS/PAN membranes have an extraordinary UV resistance property. The antibacterial tests show that complex membranes have 99.99% antibacterial rate against both gram-negative Escherichia coli and gram-positive Staphylococcus aureus.

Superhydrophobic and Ultraviolet-Blocking Cotton Fabrics Based on TiO₂/SiO₂ Composite Nanoparticles.

Superhydrophobic and ultraviolet (UV)-blocking cotton fabrics were prepared by the incorporation of TiO2/SiO2 composite nanoparticles followed by hydrophobization with hexadecyltrimethoxysilane (HDTMS). The TiO2/SiO2 composite nanoparticles were synthesized via sol-gel reaction with tetraethyl orthosilicate (TEOS) as the precursor in the presence of TiO2. As for the resulting products, characterization by Fourier-transform infrared spectrometry (FTIR), X-ray diffractometer (XRD) and scanning electron microscope (SEM) were performed respectively. The hydrophobicity measurement and ultraviolet-blocking property measurement showed that the obtained cotton fabric had a water contact angle of 159.3°, a water shedding angle of 8° and a large ultraviolet protection factor (UPF = 115.42) with UVA transmittance of 3.35%. The introduction of TiO2/SiO2 composite nanostructures onto fibers made the textiles rougher, which were highly beneficial to the formation of superhydrophobic surfaces. The high UV absorbance property of TiO2 imparted excellent UV-shielding property to the treated textiles, and effective blocking of the photoactivity of TiO2 by SiO2 resulted in the UV-durability of the superhydrophobicity on the textiles.

UV Screening in Native and Non-native Plant Species in the Tropical Alpine: Implications for Climate Change-Driven Migration of Species to Higher Elevations.

Ongoing changes in Earth’s climate are shifting the elevation ranges of many plant species with non-native species often experiencing greater expansion into higher elevations than native species. These climate change-induced shifts in distributions inevitably expose plants to novel biotic and abiotic environments, including altered solar ultraviolet (UV)-B (280–315 nm) radiation regimes. Do the greater migration potentials of non-native species into higher elevations imply that they have more effective UV-protective mechanisms than native species? In this study, we surveyed leaf epidermal UV-A transmittance (TUV A) in a diversity of plant species representing different growth forms to test whether native and non-native species growing above 2800 m elevation on Mauna Kea, Hawaii differed in their UV screening capabilities. We further compared the degree to which TUV A varied along an elevation gradient in the native shrub Vaccinium reticulatum and the introduced forb Verbascum thapsus to evaluate whether these species differed in their abilities to adjust their levels of UV screening in response to elevation changes in UV-B. For plants growing in the Mauna Kea alpine/upper subalpine, we found that adaxial TUV A, measured with a UVA-PAM fluorometer, varied significantly among species but did not differ between native (mean = 6.0%; n = 8) and non-native (mean = 5.8%; n = 11) species. When data were pooled across native and non-native taxa, we also found no significant effect of growth form on TUV A, though woody plants (shrubs and trees) were represented solely by native species whereas herbaceous growth forms (grasses and forbs) were dominated by non-native species. Along an elevation gradient spanning 2600–3800 m, TUV A was variable (mean range = 6.0–11.2%) and strongly correlated with elevation and relative biologically effective UV-B in the exotic V. thapsus; however, TUV A was consistently low (3%) and did not vary with elevation in the native V. reticulatum. Results indicate that high levels of UV protection occur in both native and non-native species in this high UV-B tropical alpine environment, and that flexibility in UV screening is a mechanism employed by some, but not all species to cope with varying solar UV-B exposures along elevation gradients.

Non-ionising UV light increases the optical density of hygroscopic self assembled DNA crystal films

We report on ultraviolet (UV) light induced increases in the UV optical density of thin and optically transparent crystalline DNA films formed through self assembly. The films are comprised of closely packed, multi-faceted and sub micron sized crystals. UV-Vis spectrophotometry reveals that DNA films with surface densities up to 0.031 mg/mm2 can reduce the transmittance of incident UVC and UVB light by up to 90%, and UVA transmittance by up to 20%. Subsequent and independent film irradiation with either UVA or UVB dosages upwards of 80 J/cm2 both reduce UV transmittance, with reductions scaling monotonically with UV dosage. To date the induction of a hyperchromic effect has been demonstrated using heat, pH, high salt mediums, and high energy ionising radiation. Both hyperchromicity and increased light scattering could account for the increased film optical density after UV irradiation. Additional characterisation of the films reveal they are highly absorbent and hygroscopic. When coated on human skin, they are capable of slowing water evaporation and keeping the tissue hydrated for extended periods of time.

Contents of phenolics and carotenoids in tomato grown underpolytunnels with different UV-transmission rates

Tomato (Solanum lycopersicum L.) is among the economically most important vegetables in Europe, valued for its bioactive properties due to significant contents of vitamins, carotenoids, and phenolic compounds. In this study, the tomato cultivar Big Beef F1 was grown in the open field (OF) and under polytunnels in central Serbia during 3 years. Polytunnels were covered with two foils (both with 57% reduced photosynthetic active radiation, PAR) differing in UV-A and UV-B transmittance. The aim of our work was to determine the influence of light conditions on accumulation of phytonutrients (carotenoids and phenolics) in the peel and flesh of ripe tomato fruits. The amount of effective antioxidants, caffeic acid, and quercetin (phenolics with ortho-dihydroxy substitution) in the peel was the highest in tomato fruits grown in the OF (maximal PAR and UV-A and UV-B radiation). Moreover, the content of leaf epidermal flavonoids was the highest in the OF. The content of lycopene and β-carotene in the flesh of tomato fruit was higher under the polytunnel with higher UV-transmittance. Our results showed that selection of the right light conditions (quality and intensity) for tomato production has a significant effect on the accumulation of beneficial phenolics and carotenoids.

Incorporation of Rutin in Electrospun Pullulan/PVA Nanofibers for Novel UV-Resistant Properties.

This study aimed to investigate the incorporation of rutin into electrospun pullulan and poly(vinyl alcohol) (PVA) nanofibers to obtain ultraviolet (UV)-resistant properties. The effect of weight ratios between pullulan and PVA, and the addition of rutin on the nanofibers’ morphology and diameters were studied and characterized by scanning electron microscopy (SEM). Fourier transform infrared (FTIR) analysis was utilized to investigate the interaction between pullulan and PVA, as well as with rutin. The results showed that the inclusion of PVA results in the increase in the fiber’s diameter. The addition of rutin had no obvious effect on the fibers’ average diameters when the content of rutin was less than 7.41%. FTIR results indicated that a hydrogen bond formed between pullulan and PVA, also between these polymers and rutin. Moreover, the addition of rutin could enhance the mechanical properties due to its stiff structure and could decrease the transmittance of UVA and UVB to be fewer than 5%; meanwhile, the value of ultraviolet protection factor (UPF) reached more than 40 and 50 when the content of rutin was 4.46% and 5.67%, respectively. Therefore, the electrospun pullulan/PVA/rutin nanofibrous mats showed excellent UV resistance and have potential applications in anti-ultraviolet packaging and dressing materials.