CARBOHYDRATE POLYMERS
·
2024
·
IF 10.7
Jiaxing Zhao,Yongfang Chen,Xuejie Yue,Tao Zhang,Yuqi Li
Designing of a green and multifunctionally integrated cellulose-based flexible wearable material with personal thermoregulation , water and ultraviolet (UV) resistance is essential for the development of personal thermal management and smart textiles. Herein, a hydrophobic silver nanoparticles cellulose-based membrane (H-AgNPs/CEPCM) was prepared through simple solution blending, spin-coating process and chemical vapor modification. The prepared membrane exhibited excellent UV resistance due to the synergistic effect of carbon quantum dots (CQDs) as well as UV-absorbing functional groups. The spin-coated AgNPs layer with high infrared reflectivity has great radiant insulation, and temperature was reduced by 3.4 °C compared with H-CEPCM in indoor environment. Furthermore, the mechanical properties of H-AgNPs/CEPCM were significantly improved by the introduction of amide and ether bonds, as well as a large number of hydrogen bonds . This led to a tensile strength of 23.21 MPa and an elongation at break of 16.57 %, while also providing water resistance. Additionally, the H-AgNPs/CEPCM exhibited outstanding thermal stability and hydrophobicity . This work may provide a feasible and promising strategy for the construction of multifunctional integrated cellulose membrane materials for radiant insulation, outdoor textiles and novel UV protection applications.
研究领域:
材料科学
·
纺织工程
·
热管理技术
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产品关联
DOI
PubMed
高影响因子
COMPOSITES SCIENCE AND TECHNOLOGY
·
2024
·
IF 8.3
Hong Chen,Wei Ou,Yu Huang,Hongchang Huang,Junlan Li,Juncheng Liu
As a protective layer for the flexible solar cell, a flexible protective material should be of high transmittance , excellent ultraviolet (UV) resistance and mechanical property. Herein, a foldable transparent polyimide (PI) composite film assembled with the zirconium-based metal-organic frameworks (UiO-66-X, X = H, NH 2 , NO 2 ) is prepared by the direct dispersion or in-situ growth methods. The results show that the transmittances of UiO-66-X@PI films (U@PI, NU@PI and OU@PI) prepared with the in-situ growth are higher than those of UiO-66-X/PI films prepared with the direct dispersion, and the former's mechanical properties are also better than those of the latter. This may be because that the UiO-66-X in the former are embedded into the PI matrix to construct multipoint bonding network. The U@PI exhibits stronger UV-resistance than the Pristine PI, NU@PI and OU@PI after 5000 equivalent sun hours (ESHs) UV irradiation. The attenuations of average transmittance and tensile strength for U@PI are 2.19 % and 18.68 %, respectively, which are only one half and one-third of those for the Pristine PI (4.59 % and 56.58 %), respectively. And the average transmittance of U@PI has been over that of the Pristine PI after 5000 ESHs UV irradiation. This may be because that the porous UiO-66 increases the UV transmission path and the electron-hole recombination center , thereby inhibits the destructive effect of UV.
研究领域:
材料科学
·
能源技术
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产品关联
DOI
高影响因子
BIOMACROMOLECULES
·
2025
·
IF 5.4
Wenqian Chen,Zi Ye,Lixiong Gao,Yuhang Jiang,Yue Wei,Xuejun Chen,Liqin Li,Tengfei Mao,Zhaohui Li
The corneal epithelium, the outermost barrier of the eye, is particularly susceptible to UV-induced photodamage. Owing to the limited protection provided by physical defense strategies, there is a critical need for effective UV-protective ocular medications. In this study, novel fluorescent copolymers were synthesized and evaluated for their anti-UV properties in human corneal epithelial (HCE-T) cells. These copolymers provided substantial protection to HCE-T cells against damage from various types of UV radiation. The protective effects were attributed to their ability to attenuate oxidative damage caused by UVA radiation and mitigate direct DNA damage induced by UVB and UVC radiation. Mechanistic investigations revealed that their antioxidant and DNA repair activities are mediated through the regulation of the PERK and NER signaling pathways. These findings underscore the potential of these functional polymers as promising ophthalmic agents against broad-spectrum UV-damage.
研究领域:
生物医学
·
材料科学
·
眼科学
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产品关联
DOI
PubMed
高影响因子
Journal of Nanomaterials
·
2022
·
IF 3.791
Zhenming Qi,Wenhui Yu,Jialong Tian,Kuang Wang,Jiayi Chen,Dawei Gao,Yu Ren,Chunxia Wang
Amino functionalized nanocarbon black (CB/KH550) was prepared in reaction between KH550 and nanocarbon black (CB). 2-(4-(4,6-dichloro-1,3,5-triazin-2-ylamino)phenylsulfonyl)ethyl) sodium sulfate (SDTES) was synthesized and characterized. Self-dispersive and reactive nanocarbon black (CB/KH550/SDTES) was prepared by nucleophile substitution reaction and characterized by FTIR, TEM, zeta potential, and TG analysis. Cotton fabric was dyed with CB/KH550/SDTES by dip-dyeing method and was observed by SEM. Moreover, color depth, static resistance, UV protection, tensile property, and rub fastness of cotton fabric were measured and analyzed. Results showed that CB/KH550/SDTES demonstrated excellent dispersion stability. The dyed cotton fabric possessed adorable antiultraviolet and antistatic properties. The preparation mechanism of the cotton fabric dyed with CB/KH550/SDTES was proposed.
研究领域:
材料科学
·
纺织工程
✓ 已验证
DOI
高影响因子
POLYMER DEGRADATION AND STABILITY
·
2025
·
IF 7.4
Qian Li,Jing Zheng,Zejie Huang,Libo Hu,Yanqiao Jin,Lei Xiong
In order to overcome the performance barriers of polylactic acid (PLA), a multifunctional layered chitosan derivative, DAMC-Al, is synthesised and used as an intumescent flame retardant. The acid sources used in this work are 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide and amino trimethylene phosphonic acid, which act synergistically to facilitate the conversion of chitosan to carbon. The combustion tests demonstrate that the PLA/5DAMC-Al exhibits excellent flame-retardancy with a limiting oxygen index of 30.3 % and a UL-94 flammability rating of V-0. The heat release rate and total heat release are significantly reduced compared to pure PLA, and the residual carbon expands rapidly. In addition, the composite has improved toughness while maintaining the stiffness of the PLA substrate, with a 31.0 % increase in elongation at break. DAMC-Al can also effectively block the transmission of 95 % of ultraviolet lights, protecting the PLA macromolecular chain from high-energy ultraviolet damage. Actually, the ultraviolet protection factor of PLA/5DAMC-Al is determined to be as high as 51.43. Furthermore, the soil degradation tests show that PLA/5DAMC-Al has the same excellent natural degradation properties as PLA.
研究领域:
材料科学
·
高分子化学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2021
·
IF 9.229
Yuyang Zhou,Yichao Lin,Benjamin Tawiah,Jun Sun,Richard K.K. Yuen,Bin Fei
This study presents a novel and facile strategy for fabricating fire-resistant, ultraviolet (UV)-shielding, and tensile-enhanced polylactide (PLA) composites using two-dimensional (2D) MXene (Ti3C2) flakes chemically modified with 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (DOPO). The thermal and burning performances of PLA composites were demonstrated by the limiting oxygen index, UL-94 test, and cone calorimetry. The UV-shielding and tensile performances were also examined. The results revealed that PLA/Ti3C2–DOPO (3 wt %) displayed a V-0 rating in the UL-94 test. The enhancement against fire hazard was reflected by the significant reduction in the peak heat release rate (33.7%), total heat release (47%), peak CO production (58.8%), and total smoke production (41.7%). The improved fire-safety performance of the composites is attributed to the interplay of catalytic, barrier, and condensed effects of the Ti3C2–DOPO nanosheets in the PLA matrix. PLA/Ti3C2–DOPO also showed an increase (∼9%) in tensile strength and an “Excellent” level (UPF 50+) in the UV-protection assessment. In all, this study introduces a novel chemical modification strategy for 2D MXene flakes to fabricate multifunctional PLA composites, which are promising candidates for next-generation sustainable and protective plastic products.
研究领域:
材料科学
·
高分子化学
·
纳米技术
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产品关联
DOI
PubMed
高影响因子
FIBERS AND POLYMERS
·
2020
·Vol. 21
·期 11
·2521-2529
·
IF 1.797
Yang Xue,Wang Ziyang,Zhang Yongsheng,Liu Wei
For improving the ultraviolet (UV) protection property of cotton fabric and exploiting ecological cotton textiles, cotton fabric was modified with a kind of biocompatible and nontoxic of chitosan (CS)/nanocellulose (NCs) nanocomposites using a pad-dry-cure process. The effect of particle size of NCs on the morphology and property of CS/NCs cotton fabrics were carefully investigated by SEM, FTIR, and mechanical property, water wettability, UV protection and laundering durability analysis. The results revealed that the CS/NCs coated fabrics performed excellent UV protection ability as well as a good laundering durability. The UPF values of all the CS/NCs coated fabrics were much higher than that of untreated fabric even after 30 cycles of laundering. Moreover, the particle size of NCs had a negative effect on the UV protection ability of CS/NCs coated fabric. Meanwhile, coated with CS/NCs nanocomposites was benefit to enhance the mechanical property, and hydrophobicity of cotton fabric.
研究领域:
纺织科学
·
材料科学
·
生态学
✓ 已验证
产品关联
DOI
高影响因子
Materials
·
2016
·Vol. 9
·期 7
·504
·
IF 2.728
Yongfang Qian,Mengjie Qi,Laijiu Zheng,Martin W. King,Lihua Lv,Fang Ye
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.Keywords:pullulan;rutin;electrospinning;nanofiber;UV resistance
研究领域:
材料科学
·
生物医学工程
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产品关联
DOI
PubMed
高影响因子
INDUSTRIAL CROPS AND PRODUCTS
·
2024
·
IF 5.6
Hui Zhang,Yanyan Zhang,Xinyu Wang,Wei Wang,Zhi Wu,Yan Wu,Yi Sun,Zongqian Wang
As an important biomass resource, chestnut shells are often discarded and wasted. In this study, we report an innovative, low-cost and environmentally friendly approach of dyeing silk fibers with natural pigments extracted from chestnut shells using deep eutectic solvent (DES) and imbuing them with antibacterial and ultraviolet protection properties. To improve the extraction ratio of chestnut shell pigment, DES of choline chloride and urea (ChCl/Urea) with high solubility performance was adopted to extract pigment from chestnut shells and then directly used for silk dyeing. The color spectral curve, washing durability, antibacterial and ultraviolet resistance of dyed silk were tested and compared with the silk dyed by metal salt mordant. The result showed that compared with ethanol extraction, DES extraction method had a higher extraction rate and better stability of the extraction solution. Owing to the swelling, surface modification and high permeability of ChCl/Urea DES to silk fibers, the affinity between the pigment solution and silk fibers was enhanced, and the pigment molecules entered the amorphous area inside the silk fibers, forming a tight bond with the fiber matrix during dyeing. Therefore, the dyed silk fabric has excellent washing durability and soft luster, and the color strength ( K / S ) remained unchanged after three washings. Meanwhile, the antibacterial activity and ultraviolet protection coefficient of silk dyed with chestnut shell pigment reached above 97% and 42.26, respectively, which exhibits excellent antibacterial and ultraviolet protection properties.
研究领域:
材料科学
·
纺织工程
·
环境科学
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产品关联
DOI
高影响因子
MATERIALS LETTERS
·
2017
·
IF 2.572
Xue Yang,Yanjiao Zhao,Hassan Mussana,Mengistu Tessema,Lifang Liu
The chitosan (CS)/cellulose nanocrystal (CNC) (0, 0.2. 0.5, 0.8 and 1 wt%) nanocomposites were applied as modifier, and then deposited on the surface of cotton fabric via a pad-dry-cure method. The morphology, mechanical, hydrophilicity and ultraviolet (UV)-blocking properties of prepared fabrics were carefully investigated. The results showed that CS/CNC could obviously enhance the UV-blocking property of cotton fabric. CS/CNC0.5 fabric exhibited the most excellent UV-blocking property as well as good washing durability after 30 times water laundering, indicating CS/CNC could be used as efficient and durable UV blocker for cotton fabric. In addition, CS/CNC also can increase the mechanical property of cotton fabric; while decrease the hydrophilicity of cotton fabric.
研究领域:
纺织材料学
·
高分子化学
·
纳米材料科学
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Min Wu,Yuyang Zhou,Ren-Cheng Tang
Integrating bio-extracts with natural fabric towards fully bio-based textiles is broadly advocated that benefits customers’ health and the environment. However, promoting the durability aside from using synthetic fixer or metal mordant, and exploring new source for blue bio-colorant are two challenging issues at this stage. To address this issue, a blue bio-colorant phycocyanin (PC) and a bio-crosslinker genipin (GNP) are combined to silk for durable blue appearance and UV protective/antioxidant functions. In the presence of GNP, the PC quantity on silk dramatically increases from 23.5 to 74.4 mg/g which enhances the colour depth and functionalities of silk. Moreover, the PC/GNP treated silk achieves high ratings in the washing and rubbing tests. Those two results demonstrate the dual roles of GNP for promoting the affinity/durability of PC to/on silk. The condition, i.e., 10 % owf of PC, 1 g/L GNP, 70 °C and 3 h is recommended considering the colour strength and fastness of silk, thermal stability of PC, reactivity of GNP and effective crosslinking between PC and silk. PC (10 % owf) imparts silk with high UPF value up to 39 and scavenges over 70 % of free radicals within 60 min. Almost no strength loss occurs on silk thanks to this milder processing condition. The designed PC, GNP and silk crosslinking system expands the applicable area of silk which represents the next-generation fully bio-based silk product.
研究领域:
纺织科学
·
生物化学
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2023
·
IF 8.2
Xu Jin,Jing Zhang,Yanlong Zhu,Anying Zhang,Rui Wang,Meng Cui,De-Yi Wang,Xiuqin Zhang
Developing multifunctional biodegradable PLA with ignition delay, high efficient fire retardancy, and UV resistance properties is a challenging task owing to its high flammability , and mutually exclusive phenomenon between the latter two properties. In this work, we report a superior efficient synergistic action combining piperazine pyrophosphate (PAPP) and a Co based metal-organic framework (ZIF-67). Results illustrated that with merely 0.06 wt% ZIF-67, intumescent PLA containing 4.96 wt% PAPP reached UL-94 V0 rating. The PLA/4.9PAPP/0.1MOF sample possessed a limiting oxygen index (LOI) value at 33 %, exhibited a 28 % reduction in peak heat release rate (pHRR) and a 67 % increase in fire propagation index (FPI). Moreover, the presence MOF delayed the ignition time of PLA by 12 s due to the highly porous structure of MOF and its chemical heat-sink performance. Insightful reaction to fire mechanism in the condensed phase via TG-FTIR and Raman revealed that a crack free protective intumescent char layer with higher graphitization degree was formed, which effectively enhanced the barrier effect and minimize the heat and fuel transfer. In addition, the UV resistance of PLA composites is enhanced, remaining at and below 5 % transmittance in the UVA and UVB areas. This work provides a green production way of multifunctional degradable materials and broadens their application fields.
研究领域:
材料科学
·
火灾安全工程
·
高分子化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）