Gellan Gum Hydrogel as an Aqueous Treatment Method for <i>Xuan</i> Paper

Li, Haomiao; Severini, Leonardo; Titubante, Mattia; Gong, Decai; Micheli, Laura; Meisina, Claudia; Gong, Yuxuan

doi:10.1515/res-2020-0010

Cited by 12 publications

(11 citation statements)

References 24 publications

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“…As a result, there is growing interest in taking inspiration directly from nature in order to develop sustainable and highly functional biobased materials. Due to their biocompatibility, biodegradability, and a range of chemical functionalities, these biobased materials have attracted significant attention in a wide range of fields such as biomedical, renewable energy, cultural heritage preservation, and building technology, representing a sustainable alternative to petroleum-based resources. − Cellulose and proteins are two of the most abundant biopolymers on Earth, playing diversified roles in many biological systems − and, as a result, are commonly used as natural building blocks in the preparation of biobased materials such as hydrogels and aerogels. In particular, due to their light weight, high specific surface area, and porous structure, aerogels commonly find application as oil/chemical absorbents, thermal insulators, biomedical scaffolds, and biocatalysts; however, before reaching practical application, the fundamental properties and interactions within biobased aerogels need to be thoroughly investigated…”

Section: Introductionmentioning

confidence: 99%

Biohybrid Nanocellulose–Lysozyme Amyloid Aerogels via Electrostatic Complexation

et al. 2021

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Modern science is increasingly turning to nature for inspiration to design sustainable biomaterials in a smart and effective way. Herein, we describe biohybrid aerogels based on electrostatic complexation between cellulose and proteins—two of the most abundant natural polymers on Earth. The effects of both particle surface charge and particle size are investigated with respect to aerogel properties including the morphology, surface area, stability, and mechanical strength. Specifically, negatively charged nanocellulose (cellulose nanocrystals and cellulose nanofibers) and positively charged lysozyme amyloid fibers (full-length and shortened via sonication) are investigated in the preparation of fibrillar aerogels, whereby the nanocellulose component was found to have the largest effect on the resulting aerogel properties. Although electrostatic interactions between these two classes of charged nanoparticles allow us to avoid the use of any cross-linking agents, the resulting aerogels demonstrate a simple additive performance as compared to their respective single-component aerogels. This lack of synergy indicates that although electrostatic complexation certainly leads to the formation of local aggregates, these interactions alone may not be strong enough to synergistically improve bulk aerogel properties. Nevertheless, the results reported herein represent a critical step toward a broader understanding of biohybrid materials based on cellulose and proteins.

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Section: Introductionmentioning

confidence: 99%

Biohybrid Nanocellulose–Lysozyme Amyloid Aerogels via Electrostatic Complexation

et al. 2021

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“…Even A4 document paper could not be discriminated from each other by using Graff C staining test, the tests could be applied for comparing of various paper fibers. [35] Commercial A4 paper were examined by using FTIR spectrometer, which scanned in the region between 4000 and 650 cm À 1 . The reproducibility has been studied by analysing the A4 paper, three corner and centre of papers.…”

Section: Resultsmentioning

confidence: 99%

“…It was shown that Breiarium and Whatman paper fibers appears brown-red colored, while xuan paper color was obtained dark blue/violet. [35] Kumar et al have investigated the differentiation of writing/photocopier paper by using ATR-FTIR method. They have investigated FTIR results in 3 different regions including 400-2000 cm À 1 , 2000-4000 cm À 1 and 400-4000 cm À 1 for chemometric analysis.…”

Section: Introductionmentioning

confidence: 99%

Chemical and Imaging Analysis of Questioned Document Paper by FTIR, ICP and Video Spectral Comparator (VSC) for Forensic Discrimination

Kizil

2024

ChemistrySelect

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Forensic document examination has been considered one of the most important fields in the forensic science. For this, a quick, effective, and cheap techniques for evaluation of forensic evidence is highly required. This study explores the comparison of A4 document paper by chemical and physical analysis. 16 of white A4 paper from different brands were analyzed by FTIR for investigation of structural characteristics. Video Spectral Comparator 8000 has been used to compare the A4 papers under different light source. The inorganic filler composition in the paper is also explored by ICP‐OES. The calcium carbonate content in document papers play a discriminant role which found to be between 16.02 % and 35.54 %. Also, water contact angle has been utilized in order to examine the surface of paper which is generally related to the inorganic filler and other additives. The WCA results ranged between 83° and 111° that enable quick and easy way to compare A4 document papers. The experimental results have demonstrated that besides FTIR methods, other methods such as ICP‐OES for elemental composition, WCA for wetting test, VSC for visualization under different light of source could have been applied for comparison of document papers in case of criminal cases.

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“…The spectrum of samples were acquired by a Fourier Transform Infrared Spectrometer (iS10, Thermo Scientific Inc., USA), equipped with an Attenuated Total Reflectance (ATR) diamond cell for scanning in the 4000-400 cm −1 region, at a resolution of 8 cm −1 . The infrared spectra of cotton relics were characterized to obtain their structural information [26,27]. (5) Fabric tensile properties testing The changes in tensile mechanical properties can characterize the damage by cleaning treat-ment.…”

Section: Cleaning Effect and Safety Evaluationmentioning

confidence: 99%

Cleaning iron rust compounds from cotton textiles: application to Qing Dynasty armor

et al. 2023

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A composite structure consisting of cotton fabric and iron sheet was widely used in Qing Dynasty armor. Due to iron sheet corroding easily, the surfaces of cotton fabric were covered with numerous rust compounds, which has a significant negative impact on the relics. In this paper, by taking Qing Dynasty armor relics as the research object, the cleaning process was reported for cotton fabrics stained with corrosion products. Using an orthogonal experiment, rust stained model samples were used to explore a specialized and efficient cleaning process. Results show that the cleaning reagents, including ascorbic acid (mass fraction 10.0 g/L), ethylenediaminetetraacetic acid disodium salt (EDTA-2Na, mass fraction 10.0 g/L), and the surfactant composed of 70% rhamnolipid and 30% alkyl glycoside (mass fraction 8.0 g/L), could fully exert a synergistic effect. After treatment, the color difference (ΔE) value between the cleaned sample and the unstained sample is only 3.81. A series of comprehensive experimental results demonstrate that the cleaning procedure is effective and safe. There are almost no rust compounds and cleaning reagent residues, and no damage to cotton fiber. The reported wet cleaning process, aided by soft bristle brush, achieved good cleaning results, indicating that the process can be used to clean rust stain pollutants in Qing dynasty cotton armor.

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Gellan Gum Hydrogel as an Aqueous Treatment Method for Xuan Paper

Cited by 12 publications

References 24 publications

Biohybrid Nanocellulose–Lysozyme Amyloid Aerogels via Electrostatic Complexation

Biohybrid Nanocellulose–Lysozyme Amyloid Aerogels via Electrostatic Complexation

Chemical and Imaging Analysis of Questioned Document Paper by FTIR, ICP and Video Spectral Comparator (VSC) for Forensic Discrimination

Cleaning iron rust compounds from cotton textiles: application to Qing Dynasty armor

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