INDUSTRIAL CROPS AND PRODUCTS
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2022
·
IF 6.449
Yinchun Fang,Lvxin Chen,Jianguo Wu,Xinhua Liu
Xuan paper is outstanding representative of the precious Chinese handmade papers which is popular with traditional calligraphy and painting. However, the highly flammability of Xuan paper results in the latent fire risk. In this research, fire-resistant and antibacterial Chinese Xuan papers were prepared by fully bio-based chitosan (CS)/phytic acid (PA) intumescent flame retardant system. Xuan paper achieved the excellent flame retardancy with limit oxygen index value of 36.4% when it was coated with 20 BL CS/PA on pulp fibers . The vertical flame properties and cone calorimetry test of Xuan papers also revealed their flame retardancy were greatly improved. The tensile strength of Xuna paper was slightly influenced by CS/PA coating. The CS/PA coating on Xuan papers could greatly enhance their antibacterial properties . The flame retardant mechanism of coated Xuan papers was investigated. The results showed the CS/PA coating on pulp fibers could act through intumescent flame retardant action. The ink wetting property of Xuan paper won’t be influenced by CS/PA coating on the pulp fibers. This research provides research basis for fire-resistant and antibacterial Xuan papers by using the fully bio-based chitosan/phytic acid coating on pulp fibers.
研究领域:
材料科学
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生物学
✓ 已验证
DOI
高影响因子
MOLECULES
·
2023
·Vol. 28
·期 19
·6791
·
IF 4.6
Chunfang Wu,Yangyang Liu,Yanxiao Hu,Ming Ding,Xiang Cui,Yixin Liu,Peng Liu,Hongbin Zhang,Yuliang Yang,Hongdong Zhang
Invaluable paper relics that embody a rich traditional culture have suffered damage, requiring urgent restoration. In this context, the utilization of soymilk as a sizing agent holds great significance and reverence. This study investigates the use of soymilk as a sizing agent for Xuan paper and evaluates its effects on various properties and the long-term behavior of the paper. The findings reveal that the application of soymilk as a sizing agent for Xuan paper imparts distinct properties, including hydrophobicity, improved mechanical properties, and unique chromaticity. These characteristics—arising from the papillae on the surface of the Xuan paper, the protein folding of the soy protein, and hydrogen-bonding interactions between the soy protein and paper fibers—play a crucial role in shaping the paper’s unique attributes. From a physicochemical perspective, the aging process leads to multiple changes in paper properties. These changes include acidification, which refers to a decrease in pH, as well as a decline in mechanical strength, an increase in chromaticity, and a decrease in the degree of polymerization (DP) of the paper. The Ekenstam equation is employed to predict the lifespan of the paper, showing longer lifespans for Sheng Xuan paper and a negative correlation between soymilk concentration and lifespan in soymilk-sized paper. Our work provides valuable insights for the preservation and maintenance of paper, highlighting the potential benefits and challenges of using soymilk for surface sizing.Keywords:surface sizing;soymilk;Xuan paper;lifespan;potential mechanism
研究领域:
文物保护
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材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Omega
·
2022
·
IF 4.132
Yinchun Fang,Jianguo Wu,Weihao Sun,Xinhua Liu
Xuan paper with outstanding cultural and artistic values is one of the most precious Chinese handmade papers and is widely used in traditional calligraphy and painting. However, the highly combustible cellulosic raw materials of Xuan paper present potential fire hazards. Ammonium phytate (AP) originating from biosourced phytic acid has been used for the flame-retardant treatment of Chinese Xuan paper by facile spray coating. The limiting oxygen index value of the treated Xuan paper increased to higher than 40%, demonstrating that the flammability of Xuan paper was greatly reduced by this treatment. The excellent flame retardancy afforded by this treatment was confirmed by cone calorimetry. TGA was used to demonstrate that the presence of AP changed the thermal decomposition process to promote char formation during the degradation of Xuan paper. The flame-retardant mode of action of phytate-coated Xuan paper was investigated using TG-FTIR, SEM, and XPS spectra. A P–N cooperative effect was proposed to account for both the condensed phase and gas-phase flame-retardant actions. The phosphorus component promotes char formation in the condensed phase, while the nitrogen component releases inert species to dilute the fuel load in the gas phase. The ink-wetting property of the coated Xuan paper was influenced negligibly by the coating process. The development of fire-resistant Xuan paper using ecofriendly flame retardants through simple and convenient spray coating has been demonstrated.
研究领域:
材料科学
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文物保护
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燃烧学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Science China-Technological Sciences
·
2023
·Vol. 66
·期 9
·2681-2695
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IF 4.6
Du JingJing,Nie ZhaoJun,Yu Hui,Xu JianXiong,Xu LiJian,Chen Qiang
Up to now, it is always a delicate and challenging task to clean and protect Xuan paper ink painting. Xuan paper is composed of cellulose with a rough surface and easy to absorb dust, which leads to poor cleaning effect and irreversible damage in traditional cleaning process. Hydrogel is one of the most effective tools to clean the artworks. However, in the practice of cleaning Xuan paper, most hydrogels cannot achieve fine cleaning result due to the interfacial adhesion issues. Herein, to protectively and effectively clean Xuan paper, using physical yet strong poly(vinyl alcohol)/poly( N -(2-hydroxyethyl) acrylamide) (PVA/PHEAA) hydrogel with suitable stiffness as the model, the interfacial adhesion between hydrogel and Xuan paper was systematically investigated, and various technologies were used to evaluate the cleaning effect. A critical interfacial adhesive energy (< 4 J/m 2 ) is found to achieve the protective and effective cleaning purpose. To the best of our knowledge, this is the first report to estimate the adhesion of hydrogel on the cleaning of paper artwork, which will provide a new viewport in the conservation practice.
研究领域:
材料科学
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保护科学
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高分子科学
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文化遗产保护
✓ 已验证
DOI
高影响因子
Heritage Science
·
2022
·Vol. 10
·期 1
·1-12
·
IF 2.843
Liu Zhen,Liu Kun
Chinese ink has very special significance for presentation of artistic effects and preservation of works of art; however, wasted nonrenewable resources, potential toxicity, and complex and inefficient production technologies have limited the development of inks for traditional Chinese culture. Herein, environmentally friendly, practical and antibacterial Chinese ink was prepared by facile heating-stirring of gelatin and the natural polysaccharide chitosan. The internal composition, viscosity, morphology, particle size and antibacterial properties of the ink were characterized by Fourier transform-infrared spectroscopy, X-ray photoelectron spectroscopy, scanning electron microscopy and bacteriostatic zone tests. The results showed that commercial ink (CM) spread easily on Xuan paper and led to imperfect artwork, while the chitosan and gelatin ink (CG) showed good adhesion and stability on Xuan paper. Based on this study, we believe that the good performance of CG ink should be attributed to restrictions arising from its internal chitosan and gelatin network, which restrict diffusion. Finally, the author used CG ink to display traditional Chinese calligraphy and landscape painting and believes that it has significant application prospects and will be used in large-scale production.
研究领域:
材料科学
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化学
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文化遗产保护
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艺术材料
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2024
·
IF 9.4
Xiaoyu Hao,Qian Sun,Kui Hu,Yibo He,Tianyi Zhang,Dina Zhang,Xiaolei Huang,Xuqing Liu
The quest for efficient hydrogen production highlights the need for cost-effective and high-performance catalysts to enhance the electrochemical water-splitting process. A significant challenge in developing self-supporting catalysts lies in the high cost and complex modification of traditional substrates. In this study, we developed catalysts featuring superaerophobic microstructures engineered on microspherical nickel-coated Chinese rice paper (Ni-RP), chosen for its affordability and exceptional ductility. These catalysts, due to their microspherical morphology and textured surface , exhibited significant superaerophobic properties, substantially reducing bubble adhesion. The nickel oxy-hydroxide (NiO x H y ) and phosphorus-doped nickel (PNi) catalysts on Ni-RP demonstrated effective roles in oxygen evolution reaction (OER) and hydrogen evolution reaction (HER), achieving overpotentials of 250 mV at 20 mA cm −2 and 87 mV at −10 mA cm −2 in 1 M KOH, respectively. Moreover, a custom water-splitting cell using PNi/Ni-RP and NiO x H y /Ni-RP electrodes reached an impressive average voltage of 1.55 V at 10 mA cm −2 , with stable performance over 100 h in 1 M KOH. Our findings present a cost-effective, sustainable, and easily modifiable substrate that utilizes superaerophobic structures to create efficient and durable catalysts for water splitting. This work serves as a compelling example of designing high-performance self-supporting catalysts for electrocatalytic applications.
研究领域:
材料科学
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电化学
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催化
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可再生能源
✓ 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）