ACS Applied Polymer Materials
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2026
·
IF 5.2
Xin Tian,Yibo Sun,Tianyu Wang,Tingxuan Duan,Hongli Guo,Huibin Su,Xiaoyang Zhang,Xuhan Kou,Fei Jia,Guanghui Gao
In recent years, flexible strain sensors fabricated by using ultraviolet light-curing technologies have garnered significant attention for wearable devices and human motion monitoring. However, developing hydrophobic flexible sensors with good mechanical strength and environmental stability remains a great challenge. Herein, an ultraviolet-curable silane side-chain-modified polyurethane acrylate material was fabricated for flexible sensing applications. A hydroxyl-terminated silane coupling agent (APIP) was synthesized to modify polyurethane acrylate (PUA). The results indicate that the amount and structure of APIP affect the polymerization performance, thermodynamic properties, tensile properties, and hydrophobicity of PUA. When 20 wt % APIP was added, the sample (PUA-APIP/20%) exhibited a water contact angle of 104°, which represents a significant increase from the 74° of the original PUA. The tensile strength and elongation at break of PUA-APIP/20% increased to 8.67 MPa and 378.84%, respectively. The composite of PUA-APIP and lithium bis(trifluoromethane sulfonyl) imide (LiTFSI) could be instantly cured under UV irradiation to produce a flexible thin-film strain sensor. This composite strain sensor was used to detect large-amplitude human movements (such as finger, elbow, and knee flexion) as well as subtle muscle contractions and can yield stable strain responses. This work offers strategies for the development and sustainable production of wearable, flexible electronic devices.
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JOURNAL OF NON-CRYSTALLINE SOLIDS
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2026
·
IF 3.6
Yanhe Wang,Jiao Xu,Huanlin Zhang,Miao Liu,Zhi Li
High-performance HPSA/ATiO 2 composite aerogels are successfully fabricated. • HPSA/ATiO 2 aerogels show significantly improved flame retardancy and thermal stability. • HPSA/ATiO 2 aerogels exhibit low thermal conductivity, low density, and strong hydrophobicity. The coexistence of long-term low temperature and strong ultraviolet (UV) radiation in cold and high-altitude regions put forward stringent requirements for the thermal insulation and durability of building envelopes. However, conventional thermal insulation materials often struggle to simultaneously achieve low thermal conductivity and stable long-term performance. Therefore, it is critical to develop high-performance thermal insulation materials to improve indoor thermal comfort and reduce building energy consumption. In this work, surface modified titanium dioxide (ATiO 2 ) was incorporated to enhance the UV resistance of hydrophobic silica aerogel (HSA), and then used hypophosphorous acid as the acid catalyst to prepare flame retardant HSA composite aerogels (HPSA/ATiO 2 ). The aerogel exhibited outstanding UV resistance and flame retardancy while maintaining favorable comprehensive properties. For instance, HPSA/ATiO 2 – 0.50 containing 0.5 g ATiO 2 has low density (0.1594 g/cm 3 ), low thermal conductivity (24.9 mW·m –1 ·K –1 ), high specific surface area (654.3 m 2 /g), and high water contact angle (131.2°). Compared with the pristine sample, its total heat release and gross calorific value decreased by 44.7% and 26.39%, respectively. Moreover, the thermal stability of HPSA/ATiO 2 – 0.5 is also significantly improved compared with pure HSA. This study provides a valuable strategy for constructing high-performance HSA and broadens its potential applications in cold and high-altitude environments.
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INDUSTRIAL CROPS AND PRODUCTS
·
2026
·
IF 6.4
Wenhui Niu,Liujun Pei,Xiaohua Feng,Jiping Wang
A composite film with synergistic UV-shielding, antioxidant and enhanced mechanical properties. • UV absorption mechanism of quercetin, confirming its intrinsic π→π* and n→π* electronic transitions in the UV region. • A great application potential in sustainable food packaging for mitigating photooxidative degradation of packaged products. With the escalating severity of environmental issues and the surging demand for bio-based alternatives to petroleum-based plastics, polylactic acid (PLA) has garnered extensive attention as a renewable polymer. However, its poor ultraviolet (UV) resistance restricts long-term applications in outdoor scenarios and food packaging-two critical fields requiring prolonged material stability. To address this inherent limitation, quercetin, a natural flavonoid renowned for its exceptional UV absorption and antioxidant properties, was successfully incorporated into PLA via a solution-casting technique for the fabrication of functional UV-shielding films tailored specifically for food packaging applications. Density functional theory (DFT) calculations confirmed quercetin’s superior UV-absorbing capacity via intense π→π* and n→π* transitions (200–400 nm). The composite films exhibited homogeneous surface morphology and high visible transparency, while significantly reducing transmittance at 280 nm (T₂₈₀) to as low as 1.18%. Furthermore, the films retained robust UV-shielding efficiency even after 7 h of continuous UV irradiation, demonstrating excellent photostability. Mechanical analysis showed that moderate quercetin incorporation improved PLA’s tensile strength by mitigating inherent brittleness, while antioxidant assays (DPPH and ABTS) demonstrated over 90% free-radical scavenging efficiency. These findings validate quercetin's synergistic effect in simultaneously enhancing the UV protection and oxidative stability of PLA. Migration tests showed negligible release in 10% ethanol (simulating aqueous foods), but higher release in 50% and 95% ethanol due to enhanced matrix swelling. This controlled release behavior highlights the films' suitability for fresh produce packaging, where minimal migration in high-moisture environments is desired. Collectively, this work presents an efficient strategy to improve the UV resistance of bio-based polymers, advancing their practical utility in active food packaging to mitigate photooxidative degradation. Download: Download high-res image (149KB) Download: Download full-size image
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Energy & Environmental Materials
·
2026
·
IF 13.8
Xiyue Zhu,Mingshuo Zhang,Jun Chen,Chen Hu,Jinshuo Zhang,Xin Liu,Xichao Dong,Laifei Cheng,Xingang Luan
High-temperature energy systems require robust functional coatings and sensing materials capable of operating under extreme thermal and oxidative environments. The polymer-derived SiHfBCN ceramics system shows strong potential owing to their outstanding thermal stability and oxidation resistance. However, achieving compatibility with high-resolution patterning remains challenging due to the lack of suitable photosensitive precursors. Herein, a photoresponsive quinary SiHfBCN preceramic resin is rationally designed via sequential grafting of acrylate photosensitive units onto the polymer backbone, enabling efficient photolithography and dense ceramic film formation. Compared with conventional thermal processes, UV curing significantly enhances microstructural order and promotes the formation of conductive networks, yielding a low resistivity of 0.087 Ω·m at 1200 °C. Further incorporation of carboxylated multi-walled carbon nanotubes reduces the resistivity to 4.49 × 10 −3 Ω·m by constructing chemically coupled conductive networks. The ceramic films exhibit a Young's modulus of 93.38 ± 0.50 GPa and a hardness of 9.34 ± 0.09 GPa. Notably, negligible changes in internal resistivity are observed after 50 h oxidation at 1200 °C in air, owing to a self-sealing oxide layer reinforced by carbon nanotube–oxide nano-pinning interfaces. This work elucidates the synergistic roles of UV curing and carbon nanotube incorporation in tailoring phase evolution, electrical transport, and oxidation stability in complex polymer-derived ceramic systems, highlighting the strong potential of photo-induced SiHfBCN ceramic films as integrated conductive and self-sensing coatings for high-temperature energy applications.
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ADVANCED FUNCTIONAL MATERIALS
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2026
·
IF 19.9
Yu He,Zhi Liang,Zitan Yang,Zhangcheng Li,Pan Xiong,Chong Hou
Effective thermal management is essential for maintaining habitable conditions and system reliability in environments with extreme diurnal temperature variations. However, conventional thermoregulatory materials fail to deliver bidirectional thermal regulation under such conditions. Radiative coolers often cause excessive nocturnal overcooling due to continuous heat loss. Conversely, pure thermal insulators cannot actively dissipate accumulated heat during the day. Prolonged UV exposure further accelerates material degradation, compromising long-term performance stability. Overcoming these compounding environmental challenges necessitates a unified design strategy. Here, we present UV-resistant hierarchical structured thermoregulatory (HiST) coatings that synergistically integrate high-performance radiative cooling and superior thermal insulation within a scalable architecture. The coatings show outstanding thermal-optical properties: 97.58% solar reflectance with robust UV rejection, 97.34% infrared emissivity, and 35 mW m −1 K −1 thermal conductivity. Field tests in extreme environments reveal ∼19.8°C temperature reduction relative to an uncoated control and ∼4.1°C peak nighttime interior temperature elevation above the ambient, buffering interiors against thermal shocks. This work establishes a robust materials platform for effective thermal management in applications ranging from energy-efficient buildings to spacecraft and habitats for extreme terrestrial and space environments.
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Advanced Optical Materials
·
2026
·
IF 7.2
Wenbin Zhang,Wenqi Jin,Xiangcong Ma,Zhihua Yang,Fangfang Zhang,Shujuan Han,Shilie Pan
Nonlinear optical (NLO) crystals operating in the short‑wavelength ultraviolet (UV) region are essential for all‑solid‑state lasers. For such materials, a moderate birefringence represents a key requirement. Borates with planar π‑conjugated [B 3 O 6 ] rings are promising candidates for short‑wavelength UV NLO crystals, yet their tendency to adopt parallel alignment often leads to excessive birefringence and detrimental beam walk‑off. Herein, we propose a charge‑compensation strategy mediated by heterovalent cation occupation to rationally tailor the arrangement of [B 3 O 6 ] units. Finally, a new noncentrosymmetric crystal that adopts a unique zigzag packing of [B 3 O 6 ] groups distinct from previously reported structural types, RbBaB 3 O 6 , was designed and synthesized. This configuration yields a balanced set of optical properties: a birefringence of 0.075@532 nm, a moderate phase‑matching SHG response, a short UV cutoff edge below 196 nm, and the shortest type‑I phase‑matching wavelength of 236 nm, confirming its potential as a viable UV NLO crystal. This work demonstrates a practical route for fine‑tuning birefringence in borate‑based UV NLO materials, offering a viable candidate for all‑solid‑state laser systems operating in the UV region.
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CHINESE JOURNAL OF POLYMER SCIENCE
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2026
·
IF 4.6
Cai Meng-Yuan,Su Sao,Du Wen-Tao,Xu Rui-Jie,Xiang Hong-Ping
Self-healing polyurethane (PU) elastomers will greatly extend the service life of key components, reduce maintenance costs, and promote sustainability. However, dense hydrogen bonds cannot quickly recover after stretching, causing permanent deformation, while high-temperature and long-duration curing are required for their crosslinking. Therefore, dual crosslinked networks are designed herein to achieve self-healable, high-resilience and UV-curable polyurethane-urea elastomers (PUU-SS-Zn), using polycarbonate diol (PCDL) as the soft segment for entropic elasticity, cystamine (Cy) as a chain extender for disulfide bonds and urea-linked hydrogen bonds, 2-hydroxyethyl acrylate (HEA) as end-capping groups for rapid UV-curing, ZnCl 2 for metal coordination bonds. The resultant elastomers are UV-cured within 100 s, exhibit a transmittance >92%, tensile strength of 11.8 MPa, and elongation at break of 2423%. More importantly, it achieves nearly 100% resilience at 500% strain within 5 s, realizes 99.6% resilience at 1000% strain within 5 min, and maintains 90.2% after multiple cycles. Surface scratches disappear within 30 min at 60 °C, and the self-healing efficiency reaches 93% after 8 h at 80 °C. This self-healable, high-resilience and UV-curable polyurethane-urea elastomer shows great application potentials in flexible sensors and wearable devices.
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Nature Communications
·
2026
·
IF 18.1
Li Pingping,Zhang Ming,Hu Yubin,Dai Xiangcheng,Asif Muhammad Mohtashim,Zhao Junjie,Kim Donghun,Celebi Kemal
Zeolite nanosheets offer promising opportunities to fabricate ultrathin molecular sieving platforms for energy-efficient and cost-effective gas separation. However, activating these nanosheets requires a high-temperature calcination process that opens the pores, causing drying and subsequent irreversible aggregation. Once aggregated, most nanosheets cannot be well-aligned to form a continuous thin membrane, which is a persistent bottleneck for mixed matrix membrane fabrication. In this study, we present a facile ultraviolet (UV)-ozone treatment that activates zeolite nanosheets (MFI and SAPO-34) in aqueous solution. This treatment prevents the drying and aggregation of the nanosheets, thereby ensuring high yields of solvent dispersion for open-pore nanosheets. Furthermore, the UV-ozone treatment also introduces hydroxyl groups on the nanosheet surface that enhance both CO 2 adsorption and interfacial compatibility with the polymer matrix. The activated nanosheets are then used to fabricate micrometer-thick, highly b -oriented MFI mixed matrix membranes on polymer substrates via solution casting. These membranes demonstrate high CO 2 /N 2 selectivity of 40 ± 6, with permeance of 194 ± 50 GPU (at 25 °C, ambient pressure). This method is thus substantiated as an effective and scalable approach for activating zeolite nanosheets and can be a cost-efficient approach for the fabrication of thin, flexible zeolite-nanosheet-based gas separation membranes.
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PROGRESS IN ORGANIC COATINGS
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2023
·
IF 6.6
Junhua Chen,Qiuping Ke,Shiting Li,Xuan Wang,Zhihao Zeng,Can Liu,Ruli Mo,Pran Gopal Karmaker,Zhihui Xie,Qiwen Yong
In this study, a UV-curable anti-smudge cathodic electrophoretic coating was developed by free radical copolymerization of various acrylic monomers using heptadecafluorodecyl acrylate (FOEA) as a functional monomer to provide a low surface energy structure to the acrylate precursor. The precursor was then grafted with the synthetic double-bond terminated IPDI-HEA on the precursor, and finally dipentaerythritol penta/hexaacrylate (5-Acl) was introduced as a crosslinker for the subsequent cathodic electrophoresis and UV-curing process. The chemical structure and surface fluorine content of the fluorinated waterborne polyacrylate (FWPA) were confirmed by 1 H NMR, FT-IR, and XPS , respectively. The surface morphology and roughness of the coating were assessed using SEM and AFM instruments. The contact and sliding angles of water, diiodomethane, and hexadecane were determined. The self-cleaning capability was demonstrated by measuring the oil-based and aqueous epoxy paints, as well as carbon powder sliding on the coated tinplate surface. The anti-graffiti property was also integrated with a red marker. The resistance to strong acid, salt spray, impact, friction, and bending were characterized. All these results showed remarkable self-cleaning and anti-graffiti capabilities of the as-prepared UV-curable electrophoretic coating. Meanwhile, the coating displayed exceptional robustness in resisting chemical corrosion and mechanical damage. This newly developed UV-curable anti-smudge cathodic electrophoretic coating has great application potential in various metal protection industries.
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ACS Applied Materials & Interfaces
·
2023
·
IF 9.5
Gaoshang Huang,Chenxin Yao,Miaoming Huang,Junjie Zhou,Xiuge Hao,Xiaojuan Ma,Suqin He,Hao Liu,Wentao Liu,Chengshen Zhu
Polyurethane (PU) is a widely used polymer material that will age under prolonged exposure to ultraviolet (UV) light, shortening the service life. Several methods have been used to prepare the anti-UV PU, including adding nonreactive anti-UV additives, functional fillers, and biological antioxidant molecules. However, the nonreactive anti-UV additives may migrate during long-term use, the functional fillers may damage the mechanical properties and seriously reduce the light transmittance of the sample, and the biological antioxidant molecules will inevitably color the sample. To solve these problems, in this work, a benzotriazole UV absorber (Chiguard R-455) was introduced into the PU molecular chains by in situ polymerization to prepare the nonmigrating intrinsic anti-UV PU sample with high performance and colorless transparency. The anti-UV PU samples exhibit light transmittance of over 88% in the visible range and superior mechanical properties with tensile strength higher than 65 MPa and elongation at break higher than 900%. After 24 h UV irradiation (200 W, 365 nm), the tensile strength and elongation at break of pure PU sample are significantly reduced to only 8.9 and 15.8% of the original one, respectively. On the contrary, the addition of Chiguard R-455 will endow the PU sample with excellent anti-UV performance. After 24 h UV irradiation, the tensile strength (67.2 ± 1.6 MPa) and elongation at break (917.4 ± 30.0%) of PU-0.5% (the content of Chiguard R-455 is only 0.5 wt %) have changed little compared with the sample without irradiation (67.4 ± 3.5 MPa and 919.4 ± 26.5%). Additionally, the anti-UV mechanism of the PU sample is systematically studied. This work provides a feasible method for preparing colorless, transparent, high-performance, nonmigrating intrinsic UV-shielding PU samples, which can be used as a UV light-shielding material in various fields with visible and aesthetic requirements, such as protection fields and wearable products.
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Biomedicines
·
2023
·Vol. 11
·期 6
·1649
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IF 4.7
Yuan Xie,Jingping Ye,Yaqi Ouyang,Jianing Gong,Chujie Li,Yang Deng,Yang Mai,Yang Liu,Wenbin Deng
Ultraviolet (UV) radiation can penetrate the basal layer of the skin and induce profound alterations in the underlying dermal tissues, including skin pigmentation, oxidative stress, photoaging, glycation, and skin cancer. Idebenone (IDB), an effective antioxidant that suppresses melanin biosynthesis and glycation, can protect the skin from UV-induced damage, accounting for its use in commercial anti-aging formulations. Ideally, IDB formulations should retain IDB inside the skin for a sufficient period, despite disturbances such as sweating or swimming. Herein, we present an IDB topical formulation based on Tris (tris(hydroxymethyl)-aminomethane)-modified bioadhesive nanoparticles (Tris-BNPs) and microneedle-assisted delivery. We found that Tris-BNPs loaded with IDB (IDB/Tris-BNPs) effectively reached the basal layer of the skin and were retained for at least 4 days with a slow and continuous drug release profile, unlike non-bioadhesive nanoparticles (NNPs) and bioadhesive nanoparticles (BNPs) of similar sizes (ranging from 120–142 nm) and zeta-potentials (above −20 mV), which experienced a significant reduction in concentration within 24 h. Notably, IDB/Tris-BNPs showed superior performance against UV-induced damage relative to IDB/NNPs and IDB/BNPs. This effect was demonstrated by lower levels of reactive oxygen species and advanced glycation end-products in skin tissues, as well as suppressed melanogenesis. Therefore, the proposed IDB delivery strategy provided long-term protective effects against UV-induced skin damage.Keywords:UV-induced skin damage;idebenone;bioadhesive nanoparticles;microneedle
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PROGRESS IN ORGANIC COATINGS
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2023
·
IF 6.6
Junhao Zhou,Haoxiang Xu,Liming Tang
In this article, high performance hydrophilic anti-icing coatings with carboxyl groups were facilely fabricated via UV curing polyurethane methacrylate prepolymers , which were prepared through polyaddition of isophorone diisocyanate (IPDI), poly(propylene glycol) (PPG), dimethylolpropionic acid (DMPA) and 2-hydroxypropyl methacrylate (HPMA) gradually in acetone (A series prepolymer) or isobornyl acrylate (IBOA) (B series prepolymer), and finally treated with triethylamine (TEA). The structures of A series prepolymer and the corresponding cured coating were confirmed via various techniques. The anti-icing performance of the cured coatings was investigated by ice freezing delay test, ice adhesion strength test, water contact angle and water absorption tests, and DSC test. Based on the testing results, the anti-icing behavior was defined as the incomplete icing of water on hydrophilic surface to weaken the interface adhesion. The ice adhesion strength firstly decreased as the DMPA content increased. At DMPA content of 5 %, the coating displayed a stable and very low ice adhesion strength of 40 kPa even after 25 times of icing (at −12 °C) and de-icing (at 25 °C) cycling. At even higher DMPA content, the ice adhesion strength improved because of the anchoring effect of the ice. Moreover, when IBOA was used as reactive diluent and participated in the polymerization with the prepolymers, the obtained B series coatings could have much improved mechanical properties, together with low ice adhesion strength. The facile fabrication process, excellent anti-icing performance and adjustable mechanical properties should make the coatings suitable for various purposes.
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