Article
Green & Sustainable Science & Technology
Qiuyan Zhang, Xiaohui Liu, Yuanlin Ren, Yuesheng Li
Summary: A flame retardant filler, phosphorylated microcrystalline cellulose (P-Cell), was successfully synthesized for producing fire resistant regenerated cellulose fibers on a large scale. The resulting fibers loaded with 20 wt% P-Cell exhibited favorable thermal stability and fire retardancy compared to pure fibers.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Materials Science, Paper & Wood
Yuantao Hu, Changmei Lin, Jinxin Lan, Hai Huang, Jiazhen Chen, Yao Wu, Xiaojuan Ma, Shilin Cao
Summary: This study presents a facile method to enhance the antibacterial and antiviral performance of plant fibers through fiber design and in situ assembly of silver nanoparticles (AgNPs). Mechanical refining allows for fiber splitting and improved conformability, while polydopamine (PDA) is precipitated onto the fiber surface and acts as a binder for AgNPs. The resulting fibers exhibit excellent antibacterial and antiviral performance due to the high AgNP loadings and strong bond between AgNPs and fibers.
Article
Materials Science, Paper & Wood
Sherif Elsayed, Michael Hummel, Daisuke Sawada, Chamseddine Guizani, Marja Rissanen, Herbert Sixta
Summary: Lyocell fibers have gained attention for their sustainability and excellent mechanical properties, produced using dry-jet wet spinning process. NMMO and superbase-based ILs are commonly used solvents, offering high-quality regenerated cellulose fibers.
Article
Biochemistry & Molecular Biology
Jie Gong, Yishan Kuang, Xi Zhang, Pengcheng Luan, Pengyang Xiang, Kai Liu, Lihuan Mo, Jun Xu, Jun Li, Jinquan Wan
Summary: This study investigates the morphological evolution of cellulose nanocrystals (CNC) during acid hydrolysis and proposes a CNC shaping mechanism. By using allomorphically modified cellulose as the starting material, precise prediction, design, and control of CNC morphology can be achieved.
Article
Construction & Building Technology
Kavya S. Kamasamudram, Warda Ashraf, Eric N. Landis
Summary: This article investigates the effects of CNF and nanosilica containing CNF on ordinary portland cement paste. The presence of CNF can accelerate early age cement hydration, but the effect depends on the water to cement ratio. Addition of CNF can increase the flexural strength of cement paste significantly, but has negligible effect on compressive strength.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Materials Science, Textiles
Merve Kucukali-Ozturk
Summary: This study focuses on investigating the performance characteristics of different types of lyocell fibers in fabrics, with Type B lyocell fiber standing out in terms of mechanical and comfort properties.
FIBERS AND POLYMERS
(2023)
Article
Polymer Science
Igor Makarov, Markel Vinogradov, Maria Mironova, Georgy Shandryuk, Yaroslav Golubev, Anna Berkovich
Summary: This study focuses on preparing carbon fiber precursors from cellulose solutions with the addition of bis(trimethylsilyl)acetylene, evaluating their structural features and thermal behavior. It was found that the addition of a silicon-containing additive can affect the carbon yield and thermal expansion coefficients of fibers, as well as the fiber structure and shrinkage rate.
Article
Materials Science, Paper & Wood
Mengyuan Xiao, Yingbin Guo, Jiayue Zhang, Yansong Liu, Yuanlin Ren, Xiaohui Liu
Summary: The FR-Ag-lyocell fabric with ADTPMPA as novel flame retardant and Ag nanoparticles as coating demonstrated durable flame retardant and antibacterial properties, with LOI values reaching 44.8% and 31.3% after 20 laundering cycles, lower pHRR and THR values, and excellent antimicrobial ability against S. aureus and E. coli.
Article
Chemistry, Physical
Olga Rac-Rumijowska, Helena Teterycz
Summary: This paper presents the mechanism of electrical conductivity in nanocomposite polyacrylonitrile (PAN) fibers modified with silver nanoparticles (AgNPs). The structure of the nanocomposite fibers was determined using SEM, TEM, and XRD, and the electrical properties were determined using the DC and AC methods. The conductivity of the fibers was electronic and based on the percolation theory with tunneling through the polymer phase.
Article
Chemistry, Multidisciplinary
Qui Quach, Tarek M. Abdel-Fattah
Summary: In this study, an effective method of enhancing the antibacterial property of graphene oxide was developed by growing nanosilica on its surface. Functionalized silver nanoparticles were also added to create a composite material with antimicrobial effects.
Article
Chemistry, Applied
Tomasz Grzyb, Dominika Przybylska, Agata Szczeszak, Emilia Smiechowicz, Piotr Kulpinski, Inocencio R. Martin
Summary: This study synthesized upconverting nanoparticles with NaErF4:Tm3+@NaYF4 core@shell structure and incorporated them into cellulose fibers. The nanoparticles showed intense upconversion luminescence, particularly suitable for anti-counterfeiting applications. The study also demonstrated that cellulose fibers can serve as carriers for NaErF4:Tm3+@NaYF4 nanoparticles and can be used to prepare temperature-sensing cellulose fibers.
CARBOHYDRATE POLYMERS
(2022)
Article
Materials Science, Paper & Wood
Ivan Melikhov, Markus Bacher, Takashi Hosoya, Hubert Hettegger, Antje Potthast, Thomas Rosenau
Summary: Propyl gallate is commonly used as a stabilizer and antioxidant in food and material applications, as well as in the Lyocell process. However, it was found that propyl gallate hydrolyzes quickly under Lyocell conditions and generates discoloration. On the other hand, gallic acid morpholide and gallic amide, which have similar antioxidant activity but do not produce discoloration, are considered to be superior alternatives to propyl gallate.
Article
Agricultural Engineering
Lujian Shi, Kuanjun Fang, Yawei Song, Ruyi Xie, Zhen Xue, Xue Li, Baohua Feng, Zhangcao Xiao
Summary: This study found that Lyocell fibers have a high tendency to fibrillate during the dyeing process, which affects the product quality and its application in eco-textiles. To solve this problem, a greener and simpler fibrillation prevention treatment was conducted to enhance the interaction between Lyocell cellulose chains. The nonionic crosslinker with isocyanate reactive groups significantly reduced the fibrillation tendency under specific treatment conditions. Furthermore, the interaction between cellulose chains was improved after dyeing, and the nonionic sample showed little effect on dye fixation and added wrinkle resistance to Lyocell fabrics compared to cationic and anionic crosslinkers. This method offers a shorter process and lower chemical consumption compared to conventional Lyocell dyeing, promoting the development of high-quality and eco-friendly Lyocell textiles.
INDUSTRIAL CROPS AND PRODUCTS
(2023)
Article
Materials Science, Paper & Wood
Thomas Rosenau, Antje Potthast, Hubert Hettegger, Markus Bacher, Martina Opietnik, Thomas Roeder, Immanuel Adorjan
Summary: This study investigates the role of NMMO in aqueous solutions as a medium for generating transition metal (nano)particles in or on cellulosic materials. It highlights the importance of accurately describing the composition of the chemical systems used and the seemingly inert auxiliaries that are essential co-reactants in the metal (nano)particle generation.
Article
Materials Science, Paper & Wood
Huan Song, Jun Yang, Yu Yang, Qing Yang, Jian Hu
Summary: A fibrillated lyocell fiber-based separator was prepared by modifying lyocell fibers with cellulose nanofibers. The addition of cellulose nanofibers improved the tensile strength, elongation at break, breakdown voltage, and equivalent series resistance of the separator, while reducing the pore size and porosity. The modified separator with 4% cellulose nanofibers exhibited favorable properties, including a high tensile strength, low equivalent series resistance, and improved pore structure.
Article
Chemistry, Physical
Emilia Smiechowicz, Barbara Niekraszewicz, Piotr Kulpinski
Summary: The main aim of the research is to determine the optimal conditions for producing silver nanoparticles in NMMO, which can potentially reduce the amount of chemicals used. Analysis using UV/Vis, DLS, and TEM showed that the synthesis temperature and time are crucial in controlling nanoparticle growth in NMMO. The study found that the optimal conditions for AgNPs synthesis are 100 degrees C and 0.33 h.
Article
Chemistry, Applied
Malgorzata Skwierczynska, Przemyslaw Wozny, Marcin Runowski, Piotr Kulpinski, Stefan Lis
Summary: Cellulose has the potential to be a promising material for surface-enhanced Raman scattering (SERS) substrates due to its wide availability, low cost, ease of fabrication, high flexibility, and low optical activity. This study demonstrates the development of a cellulose-based substrate that owes its SERS activity to the presence of gold nanorods in its internal structure, ensuring superior stability and reproducibility. The substrate exhibits plasmonic activity and provides easy and reproducible detection of different analytes via the SERS technique.
CARBOHYDRATE POLYMERS
(2022)
Article
Materials Science, Paper & Wood
Stanislaw Prus, Piotr Kulpinski, Edyta Matyjas-Zgondek, Krzysztof Wojciechowski
Summary: The linkage between dye and cellulose plays a crucial role in the washing and rubbing fastness properties of dyed materials. Reactive dyes form this linkage through a reaction between the reactive group of the dye and the hydroxyl group of cellulose. Introducing cationic groups to the cellulose chain changes the surface charge of cotton, allowing for electrostatic interaction with anionic dyes and efficient dye exhaustion without the need for electrolytes.
Article
Biochemistry & Molecular Biology
Adrian Bekier, Anna Brzostek, Agata Paneth, Bozena Dziadek, Jaroslaw Dziadek, Justyna Gatkowska, Katarzyna Dzitko
Summary: The study found that thiosemicarbazide derivatives may serve as potential drug treatments for Toxoplasma by inhibiting the proliferation and formation of parasitophorous vacuoles through interaction with aromatic amino acid hydroxylases. By using methods from previous studies on anti-inflammatory drugs, thiosemicarbazide compounds also exhibited anti-inflammatory activity.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Materials Science, Multidisciplinary
Agata Szczeszak, Malgorzata Skwierczynska, Dominika Przybylska, Marcin Runowski, Emilia Smiechowicz, Aleksandra Erdman, Olena Ivashchenko, Tomasz Grzyb, Piotr Kulpinski, Konrad Olejnik
Summary: The widespread falsification of documents, clothing, and packaging has a negative impact on global markets. This study presents a novel anti-counterfeiting lyocell fibre that emits bright green or yellowish up-conversion emission upon dual-range excitation. The fibres have excellent performance as anti-counterfeiting composite materials for multi-modal document protection.
MATERIALS & DESIGN
(2022)
Article
Chemistry, Physical
Stanislaw Prus, Piotr Kulpinski, Edyta Matyjas-Zgondek, Krzysztof Wojciechowski
Summary: Introducing cationic groups in the modification process changes the charge on the cotton surface, allowing for electrostatic attraction and simultaneous exhaustion and fixation of reactive dyes. This reaction can be carried out without salt and alkali at room temperature using a modified copolymer ([IME]Cl-+(−)).
Article
Chemistry, Multidisciplinary
Malgorzata Skwierczynska, Natalia Stopikowska, Piotr Kulpinski, Magdalena Klonowska, Stefan Lis, Marcin Runowski
Summary: This study developed an optical thermometer based on regenerated cellulose fibers modified with YF3: 20% Yb3+, 2% Er3+ nanoparticles. The sensor allows accurate and repeatable temperature measurements, is resistant to environmental and electromagnetic interferences, and shows potential for wearable health monitoring devices as an alternative to traditional thermometers sensitive to electromagnetic fields.
Article
Chemistry, Applied
Tomasz Grzyb, Dominika Przybylska, Agata Szczeszak, Emilia Smiechowicz, Piotr Kulpinski, Inocencio R. Martin
Summary: This study synthesized upconverting nanoparticles with NaErF4:Tm3+@NaYF4 core@shell structure and incorporated them into cellulose fibers. The nanoparticles showed intense upconversion luminescence, particularly suitable for anti-counterfeiting applications. The study also demonstrated that cellulose fibers can serve as carriers for NaErF4:Tm3+@NaYF4 nanoparticles and can be used to prepare temperature-sensing cellulose fibers.
CARBOHYDRATE POLYMERS
(2022)
Article
Biochemistry & Molecular Biology
Lidia Weglinska, Adrian Bekier, Nazar Trotsko, Barbara Kapron, Tomasz Plech, Katarzyna Dzitko, Agata Paneth
Summary: By optimizing the structure of imidazole-thiosemicarbazide compounds, we have discovered a new anti-Toxoplasma compound with prominent selectivity. This compound is more selective than standard drugs and has the necessary drug-like properties for preclinical development.
JOURNAL OF ENZYME INHIBITION AND MEDICINAL CHEMISTRY
(2022)
Article
Chemistry, Medicinal
Adrian Bekier, Justyna Gatkowska, Maciej Chyb, Justyna Sokolowska, Grazyna Chwatko, Rafal Glowacki, Agata Paneth, Katarzyna Dzitko
Summary: Two 4-arylthiosemicarbazide derivatives show strong anti-Toxoplasma gondii activity with low cytotoxicity against host cells, demonstrating high efficacy in a mouse model of acute and chronic toxoplasmosis.
EUROPEAN JOURNAL OF MEDICINAL CHEMISTRY
(2022)
Article
Biochemistry & Molecular Biology
Katarzyna Dzitko, Barbara Kapron, Agata Paneth, Adrian Bekier, Tomasz Plech, Piotr Paneth, Nazar Trotsko
Summary: Two distinct intracellular pathogens, Mycobacterium tuberculosis (Mtb) and Toxoplasma gondii (Tg), are major public health concerns worldwide. Co-infections of Tg with Mtb have been particularly problematic, especially in developing countries. Novel anti-infectious therapeutics with dual action against both pathogens are needed, as drug resistance is common. This study investigated the potential of TZD-based hybrid molecules to target Tg, with promising results.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Materials Science, Textiles
Kulpinski Piotr, Jeremiasz K. Jeszka, Malolepszy Artur, Stobinski Leszek
Summary: This study presents a method for fabricating conductive cellulose fibers modified with rGO and GO, showing that the electrical conductivity of the fibers strongly depends on the concentration of rGO. The mechanical properties of the fibers were slightly affected by the presence of GO and rGO.
AUTEX RESEARCH JOURNAL
(2022)
