Article
Chemistry, Multidisciplinary
Fei Ren, Jinwei Wang, Jinglin Yu, Cheng Zhong, Fengwei Xie, Shujun Wang
Summary: The study demonstrated that longer alkyl chains of IL cations led to stronger interaction between ILs and cellulose, resulting in higher cellulose solubility in DMSO/IL mixtures with increased viscosity. Shorter alkyl chains of IL cations, on the other hand, favored cellulose dissolution at a 1:1 ratio. This new knowledge could potentially contribute to the development of more cost-effective solvent systems for biopolymers.
Article
Engineering, Environmental
Jianhui Deng, Dongqing Cao, Xiaoqing Yang, Guoqing Zhang
Summary: This study focuses on the application of a hydrogen-bond cross-linked cellulose/carboxylated PI nanofiber composite separator in lithium-ion batteries. The results show that the composite separator exhibits high tensile strength, improved electrolyte affinity and wettability, and enhanced ion conductivity and electrochemical stability. Consequently, the cycle performance and rate performance of the batteries are greatly improved.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Polymer Science
Peng Wen, Hao Wang, Mengli Xu, Lu Zhang, Han Zheng, Jiao Xie, Mao Chen
Summary: In this study, poly(4-pinacolatoborylstyrene) (PB) was synthesized and used as a macromolecular cross-linker for cellulose acetate (CA), which successfully improved the mechanical and rheological properties of CA without sacrificing transparency. Moreover, the obtained CA materials could be recycled via solution reprocessing without significant decrease of mechanical properties.
JOURNAL OF APPLIED POLYMER SCIENCE
(2023)
Article
Polymer Science
Peng Wen, Hao Wang, Mengli Xu, Lu Zhang, Han Zheng, Jiao Xie, Mao Chen
Summary: In this study, a multi-functional polymer PB was synthesized and successfully utilized as a cross-linker for CA. The mechanical and rheological properties of CA were improved without compromising its transparent appearance by the dynamic coordination interaction between PB and CA. The obtained CA materials could be recycled via solution reprocessing without significant decrease in mechanical properties.
JOURNAL OF APPLIED POLYMER SCIENCE
(2023)
Article
Biochemistry & Molecular Biology
Eliane Roos, Daniel Sebastiani, Martin Brehm
Summary: In this study, an extension of the all-atom force field BILFF was presented to describe the dissolution behavior of cellulose in three different ionic liquids. The optimized force field parameters were found to accurately reproduce the microstructure and density data of the system, showing the potential for accurate simulations of larger systems and mixtures of these solvents and water.
Article
Chemistry, Applied
Robin Nilsson, Martina Olsson, Gunnar Westman, Aleksandar Matic, Anette Larsson
Summary: This study investigated the effects of side chain structures on the glass transition temperature and water interactions in cellulose esters. The results showed that the glass transition temperature decreased with increased side chain length, and the solubility and penetration of water in the cellulose esters decreased as well.
CARBOHYDRATE POLYMERS
(2022)
Article
Biochemistry & Molecular Biology
Subbaian Brindha, Md Golam Kibria, Tomonori Saotome, Satoru Unzai, Yutaka Kuroda
Summary: The study demonstrates that using a SEP tag containing C9R in Escherichia coli can effectively increase the expression yield and purity of EGFR-ECDIII protein. This method enables the production of EGFR-ECDIII with native-like properties and the generation of neutralizing antibodies, showing potential value in anti-cancer therapy.
BIOCHEMICAL AND BIOPHYSICAL RESEARCH COMMUNICATIONS
(2021)
Article
Chemistry, Multidisciplinary
Mood Mohan, Hemant Choudhary, Anthe George, Blake A. Simmons, Kenneth Sale, John M. Gladden
Summary: This study investigates the dissolution mechanism and interactions of lignin in cholinium-based ionic liquids through simulation methods, with lysinate identified as the best anion due to its higher affinity for lignin ether linkages. The findings suggest that [Ch][Lys] has a higher delignification rate for hardwood and grassy biomasses due to its affinity for C-O-C linkages.
Article
Chemistry, Physical
Shengkun Wei, Xuelian Wu, Xu Li
Summary: This study used molecular dynamics simulations to analyze the solubility of nanoparticles and cellulose, finding a positive correlation between the solubility of cellulose nanoparticles and the number of -OH groups on their surface. Models with a 70% crystalline region ratio showed the best overall performance, with increasing crystalline region proportion improving insulation performance of cellulose insulation paper.
MOLECULAR SIMULATION
(2021)
Article
Multidisciplinary Sciences
F. E. Tabaght, K. Azzaoui, A. El Idrissi, S. Jodeh, B. Khalaf, L. Rhazi, R. Bellaouchi, A. Asehraou, B. Hammouti, R. Sabbahi
Summary: New cellulose carbamates and cellulose acetate carbamates were prepared by classical addition reaction of isocyanates with alcohols. The grafted molecules were strongly anchored and more hydrophobic through the Telomerization technique. The synthesized derivatives showed better solubility compared to cellulose, and the biodegradability of Cell-P-1 and CA-P-1 derivatives was higher than the other samples.
SCIENTIFIC REPORTS
(2023)
Article
Chemistry, Physical
Stephen A. Stanton, Jonathan J. Du, Felcia Lai, Gyte Stanton, Bryson A. Hawkins, Jennifer A. Ong, Paul W. Groundwater, James A. Platts, David E. Hibbs
Summary: The distribution of charge density in a novel cocrystal complex of theophylline and malonic acid has been determined, showing interesting theoretical results related to the stability enhancement of theophylline. Topological analysis and molecular electrostatic potential maps revealed key differences in charge distribution and intramolecular hydrogen bonding, indicating potential for improved stability and lower energy threshold for dissociation. Further physical testing of the cocrystal will help solidify the correlation between theoretical predictions and experimental results.
JOURNAL OF PHYSICAL CHEMISTRY A
(2021)
Article
Polymer Science
Preethi Ravikumar, Suresh Sagadevan
Summary: The study investigated the properties of CHNC-reinforced CA films formed by the solvent casting method, including mechanical properties, hydrophilicity, and antifungal activity. The results demonstrated that an increase in CHNC content can enhance the antifungal activity of the films but may reduce light transmittance.
Article
Forestry
Jenny Bengtsson, Kerstin Jedvert, Artur Hedlund, Tobias Kohnke, Hans Theliander
Article
Chemistry, Multidisciplinary
Oleksandr Nechyporchuk, Tobias Kohnke
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2019)
Article
Materials Science, Multidisciplinary
Oleksandr Nechyporchuk, Karl M. O. Hakansson, Krishne Gowda, Fredrik Lundell, Bengt Hagstrom, Tobias Kohnke
ADVANCED MATERIALS TECHNOLOGIES
(2019)
Article
Materials Science, Paper & Wood
Leo Svenningsson, Tobias Sparrman, Erik Bialik, Diana Bernin, Lars Nordstierna
Article
Polymer Science
Jenny Bengtsson, Kerstin Jedvert, Tobias Kohnke, Hans Theliander
JOURNAL OF APPLIED POLYMER SCIENCE
(2019)
Article
Chemistry, Physical
Markus Andersson Trojer, Carina Olsson, Jenny Bengtsson, Arthur Hedlund, Romain Bordes
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2019)
Article
Chemistry, Multidisciplinary
Andreas Bengtsson, Jenny Bengtsson, Maria Sedin, Elisabeth Sjoholm
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2019)
Article
Polymer Science
Kerstin Jedvert, Alexander Idstrom, Tobias Kohnke, Marten Alkhagen
JOURNAL OF APPLIED POLYMER SCIENCE
(2020)
Article
Polymer Science
Birte Martin-Bertelsen, Erika Andersson, Tobias Kohnke, Artur Hedlund, Lars Stigsson, Ulf Olsson
Article
Chemistry, Applied
Leo Svenningsson, Jenny Bengtsson, Kerstin Jedvert, Werner Schlemmer, Hans Theliander, Lars Evenas
Summary: Cellulose-lignin composite carbon fibers are a potential environmentally friendly alternative to traditional precursor materials, offering advantages such as lightweight and high strength. Research has shown differences in molecular orientation between lignin and cellulose in the fabrication process, with current methods unable to replicate the oriented lignin observed in native wood.
CARBOHYDRATE POLYMERS
(2021)
Article
Polymer Science
Jenny Bengtsson, Kerstin Jedvert, Tobias Kohnke, Hans Theliander
Summary: This study investigated the mechanism underlying the improved spinnability of lignin and cellulose mixed solutions, finding that lignin can enhance the draw ratio of fibers and improve spinnability. By spinning fibers from solutions with varying lignin ratios, it was observed that lignin may stabilize against diameter fluctuations during spinning, providing a potential benefit in the production of carbon fibers.
JOURNAL OF APPLIED POLYMER SCIENCE
(2021)
Article
Chemistry, Multidisciplinary
Maria Gunnarsson, Diana Bernin, Merima Hasani, Mikael Lund, Erik Bialik
Summary: The direct reaction between carbohydrates and CO2, resulting in the formation of cellulose carbonate, was confirmed using NMR spectroscopy. The study showed that CO2 reacts with not only the hydroxyl group on carbon 6 of cellulose. By comparing observed spectra with electronic structure calculations and using a simple computational method, good agreement between predicted and measured chemical shifts was found.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2021)
Article
Chemistry, Multidisciplinary
Andreas Bengtsson, Jenny Bengtsson, Kerstin Jedvert, Markus Kakkonen, Olli Tanhuanpaa, Elisabet Brannvall, Maria Sedin
Summary: This study investigates the continuous conversion of lignin-cellulose precursor fibers (PFs) for the production of carbon fibers (CFs) using renewable raw materials. The results suggest that continuous conversion of PFs under industrial conditions is feasible and can produce CFs with certain mechanical properties. The performance of CFs can be further improved by optimizing the fiber tension, residence time, and temperature distribution.
Article
Materials Science, Multidisciplinary
Oleksandr Nechyporchuk, Ting Yang Nilsson, Hanna Ulmefors, Tobias Kohnke
ACS APPLIED POLYMER MATERIALS
(2020)