Article
Materials Science, Paper & Wood
Mina Heidari, Kelechukwu N. Onwukamike, Etienne Grau, Stephane Grelier, Henri Cramail, Michael A. R. Meier, Andreas Greiner
Summary: The study utilized the DBU-CO2 switchable solvent system for the direct electrospinning of cellulose, showing promising results. Different cellulose types and combinations with PVA were investigated to achieve unique fiber structures. Challenges in solvent removal and exploration of coagulation collection process for fiber recovery were highlighted.
Article
Chemistry, Applied
Yi Sun, Wei Zhang, Shan Lu, Wenhua Miao, Meiling Chen, Fei Liu, Haining Na, Jin Zhu
Summary: A novel cellulose-based fluorescent material has been developed in a CO2 switchable solvent for the contactless, real-time, and visual monitoring of the freshness of shrimp, crab, and fish. The material has good processibility, and exhibits sensitive and reversible fluorescent response towards ammonia.
CARBOHYDRATE POLYMERS
(2023)
Article
Materials Science, Paper & Wood
Jinyang Zhang, Shu Mi, Fei Liu, Qian Qiao, Haining Na, Jin Zhu
Summary: By using organic solvents with low Henry's constants as CO2 absorbents, the solubility of cellulose in CO2 switchable solvents can be enhanced without affecting the chemical and crystalline structure of the regenerated cellulose. This study provides a simple and effective method for the enhanced dissolution, derivatization, and processing of cellulose in the future complex solvent system.
Article
Engineering, Environmental
Yiting Xu, Xiaobo Yu, Meiling Chen, Yi Sun, Wei Zhang, Yajin Fang, Lanyun Fang, Haining Na, Fei Liu, Jin Zhu
Summary: In this study, a novel cellulose-based fluorescent functional material with dual-responsive properties was successfully designed and prepared. It can be used for selective identification and detection of Fe3+ and real-time monitoring of aquatic product freshness. The material also has the potential for irreversible information encryption.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Fei Liu, Haining Na, Zongze Yao, Shu Mi, Bin Chen, Jin Zhu
Summary: Rapid and efficient synthesis of cellulose esters with high degrees of substitution can be achieved through microwave-assisted acylation in a CO2 switchable solvent system.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2022)
Article
Polymer Science
Cunchuan Zheng, Fuchuan Liu, Ke Xu, Yang Wu, Jinyu Wang
Summary: In this study, a novel method of preparing microcapsules was introduced using CO2/N-2 switchable hydrophilicity solvent combined with an emulsion method. The prepared ethyl cellulose-glycerol tribenzoate microcapsules (EGM) exhibited spherical morphology and adjustable particle size. The method showed high yields and encapsulation rates, providing a new idea for microcapsule preparation and expanding the application field of switchable hydrophilicity solvents.
JOURNAL OF APPLIED POLYMER SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Chaoyang Kuang, Shangzhi Chen, Min Luo, Qilun Zhang, Xiao Sun, Shaobo Han, Qingqing Wang, Vallery Stanishev, Vanya Darakchieva, Reverant Crispin, Mats Fahlman, Dan Zhao, Qiye Wen, Magnus P. Jonsson
Summary: This study demonstrates that conducting polymer-cellulose aerogels can provide large modulation range for broadband THz light and maintain low reflection loss. These low-cost, aqueous solution-processable, sustainable, and bio-friendly aerogels may play an important role in next-generation intelligent THz devices.
Article
Environmental Sciences
Oh Kyung Choi, Jae Woo Lee
Summary: This study proposes an energy-efficient method using switchable polarity solvents for lipid recovery from microalgae. The results show that dipropylamine (DPA) is a potential solvent capable of achieving high lipid extraction yield from microalgae and efficient solvent recovery.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Chemistry, Multidisciplinary
Jinling Li, Shan Lu, Fei Liu, Qian Quo, Haining Na, Jin Zhu
Summary: The study successfully utilized a CO2 switchable solvent to prepare regenerated cellulose fibers, replacing the traditional viscose process. The results showed that under mild conditions, regenerated cellulose fibers with smoother surface morphology, higher crystallinity, and satisfactory mechanical properties were obtained.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2021)
Article
Chemistry, Multidisciplinary
Michael F. Cunningham, Philip G. Jessop
Summary: The development and design of CO2-switchable colloidal particles were discussed, including the principles and recent progress in the preparation of various types of colloidal particles for different applications. Future opportunities in this field were also analyzed.
CHEMICAL COMMUNICATIONS
(2023)
Article
Chemistry, Applied
Wenkai Zhu, Meiling Chen, Jieun Jang, Minsu Han, Yeonggyun Moon, Junghwan Kim, Jungmok You, Song Li, Teahoon Park, Jeonghun Kim
Summary: Nanocellulose-based aerogels have shown great potential as lightweight and porous materials for CO2 capture. Amino-functionalized nanocellulose aerogels were prepared and exhibited attractive properties in CO2 adsorption, thermal stability, and CO2/CH4 mixture separation.
CARBOHYDRATE POLYMERS
(2024)
Article
Polymer Science
Shan Lu, Jinling Li, Fei Liu, Meiling Chen, Haining Na, Jin Zhu
Summary: The study successfully prepared cellulose-graft poly (L-lactic acid) through ring opening polymerization and transesterification methods, and discovered the impact of DBU on grafting efficiency. Without additional DBU, the efficiency increased with increasing grafting agent concentration, while with added DBU, the efficiency decreased with higher levels of DBU.
Article
Environmental Sciences
Ting-Wei Lee, Yu-Hui Su, Chiaying Chen
Summary: Large amounts of waste isopropanol (IPA) are difficult to separate from the waste stream due to its azeotropic mixture with water. This study identified a novel CO2-switchable monoethanolamine-butanol deep eutectic solvent (DES) as an effective medium for separating IPA and water at ambient temperature. The developed process offers a low-cost, energy-saving, and environmentally benign route to recycling and repurposing waste IPA as a potential alternative fuel.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Chemistry, Multidisciplinary
Sebastian Pueschel, Jan Sadowski, Thorsten Roesler, Kira Ruth Ehmann, Andreas J. Vorholt, Walter Leitner
Summary: This paper presents an auto-tandem catalytic system for producing alcohols from olefin-paraffin mixtures. By using tertiary alkanolamine as the ligand and switchable component in the solvent system, the system achieves catalyst recycling and obtains high alcohol yields and turnover frequencies.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2022)
Article
Chemistry, Multidisciplinary
Ashutosh Sinha, Nico Kummer, Tingting Wu, Kevin J. De France, Dorothea Pinotsi, Janine L. Thoma, Peter Fischer, Silvia Campioni, Gustav Nystrom
Summary: Proteins tend to coat solid surfaces and form amyloid-like structures upon exposure. In this research, aerogels created from TEMPO-oxidized cellulose nanofibers are used as bio-based templates to induce and accelerate protein aggregation, showing the significance of this study.
Article
Polymer Science
Alessandra Travanut, Patricia F. Monteiro, Stefan Oelmann, Steven M. Howdle, Anna M. Grabowska, Philip A. Clarke, Alison A. Ritchie, Michael A. R. Meier, Cameron Alexander
Summary: The Passerini three component reaction (Passerini-3CR) is utilized to synthesize an amphiphilic diblock copolymer for drug delivery applications. The versatility of Passerini-3CR allows for customization through post-functionalization, demonstrating potential clinical utility.
MACROMOLECULAR RAPID COMMUNICATIONS
(2021)
Article
Polymer Science
Luca Filippi, Michael A. R. Meier
Summary: This work presents a straightforward and efficient synthesis approach for renewable non-isocyanate polyurethanes (NIPUs) by synthesizing suitable carbamate monomers and sustainable dithiols, followed by polymerization using the thiol-ene reaction. The obtained polymers were characterized by various analytical techniques to confirm their properties and structure.
MACROMOLECULAR RAPID COMMUNICATIONS
(2021)
Article
Polymer Science
Kevin A. Waibel, Dafni Moatsou, Michael A. R. Meier
Summary: Linear uniform oligomers are modified with octaethylene glycol monomethyl ether and coupled via azide-alkyne cycloaddition to form uniform star-shaped block macromolecules with a mass ranging from 10 to 14 kDa. Characterized by NMR, ESI-MS, and SEC, these macromolecules are then tested for their ability to encapsulate dye molecules in qualitative solid-liquid phase transfer experiments.
MACROMOLECULAR RAPID COMMUNICATIONS
(2021)
Article
Polymer Science
Julian T. Windbiel, Michael A. R. Meier
Summary: The Biginelli reaction was utilized to synthesize a set of 15 new fully renewable poly(3,4-dihydropyrimidin-2(1H)-one)s through a simple one-pot multicomponent approach, showing high glass transition temperatures and good thermal stability.
POLYMER INTERNATIONAL
(2021)
Article
Materials Science, Paper & Wood
Mina Heidari, Kelechukwu N. Onwukamike, Etienne Grau, Stephane Grelier, Henri Cramail, Michael A. R. Meier, Andreas Greiner
Summary: The study utilized the DBU-CO2 switchable solvent system for the direct electrospinning of cellulose, showing promising results. Different cellulose types and combinations with PVA were investigated to achieve unique fiber structures. Challenges in solvent removal and exploration of coagulation collection process for fiber recovery were highlighted.
Article
Materials Science, Multidisciplinary
Anderson M. S. Medeiros, Cedric Le Coz, Henri Cramail, Etienne Grau
Summary: This study focused on synthesizing polycaryophyllene with controlled molar mass, using styrene as a chain transfer agent. The resulting Pcar showed varying molar masses and glass transition temperatures, with Pcar@Sty#02 emerging as a promising biobased plasticizer candidate for EPDM, improving flexibility compared to petroleum-based alternatives.
ACS APPLIED POLYMER MATERIALS
(2021)
Review
Polymer Science
Boris Bizet, Etienne Grau, Jose M. Asua, Henri Cramail
Summary: This review summarizes the latest advancements in the development of hybrid nonisocyanate polyurethanes (NIPUs) by combining them with other polymers, such as epoxy, polyacrylic, and silicium-containing polymers. The potential of combining NIPUs with biopolymers is also discussed. The study highlights the importance of synergistic combination of NIPUs with other polymers in the formation of novel materials.
MACROMOLECULAR CHEMISTRY AND PHYSICS
(2022)
Article
Polymer Science
Julian T. Windbiel, Michael A. R. Meier
Summary: The research focuses on the synthesis of a renewable methacrylate monomer based on ricinoleic acid, which can be used in radical polymerization techniques like RAFT. Post-polymerization modification using the B-3CR allows for the synthesis of polymers with increased glass transition temperature.
MACROMOLECULAR CHEMISTRY AND PHYSICS
(2022)
Article
Polymer Science
Anja Kirchberg, Masood Khabazian Esfahani, Marie-Christin Roepert, Manfred Wilhelm, Michael A. R. Meier
Summary: This work demonstrates the synthesis of non-isocyanate poly(ester urethane)s in a sustainable manner by obtaining cyclic carbonates from renewable diols and reacting them with renewable 11-amino undecanoic acid methyl ester. Various purification strategies are compared and alternative starting materials are explored. The synthesized materials are fully characterized and their rheological properties are investigated.
MACROMOLECULAR CHEMISTRY AND PHYSICS
(2022)
Article
Polymer Science
Roman Nickisch, Peter Conen, Michael A. R. Meier
Summary: This study presents an easy access to thermoplastic polythiosemicarbazones (polyTSCs) through condensation reaction, resulting in a variety of polymers and copolymers that were thoroughly characterized. The polymerization proceeds at room temperature with broad moiety tolerance, and the synthesized polymers exhibit good thermal stability.
Article
Polymer Science
Victor Salvado, Marc Dolatkhani, Etienne Grau, Thomas Vidil, Henri Cramail
Summary: The carbonation of biosourced 1,2-diols is a sustainable approach for synthesizing bis-five-membered cyclic carbonates (bis-5CCs), which are precursors for valuable polymers such as polyhydroxyurethanes (PHUs). In this study, we carried out the direct carbonation of optically pure sugar-based butadiene tetraols and obtained vicinal bis-5CCs, erythritol dicarbonate (EDC) and threitol dicarbonate (TDC), while retaining the stereochemistry of the starting tetraols. The aminolysis reaction of these compounds showed that the kinetics and regio-orientation of the ring opening of the 5CCs are highly dependent on their stereochemistry. By utilizing this feature, a one-pot, two-step polymerization procedure was developed to create sequence-controlled PHUs. The experimental results were supported by density functional theory calculations, and a new family of PHUs with tunable sequence and regioregularities was discovered.
Article
Materials Science, Multidisciplinary
Jamie Rubinstein, Etienne Grau, Patrice Dole, Guillaume Chollet, Veronique Coma, Henri Cramail
Summary: This paper reports the synthesis and use of fatty bis-amides as nucleating agents for poly(L-lactide) to enhance its crystallization kinetics and heat deflection temperature. By adjusting the loading and processing time, high crystallinity and excellent thermal performance can be achieved.
ACS APPLIED POLYMER MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Florian Le Goupil, Victor Salvado, Valere Rothan, Thomas Vidil, Guillaume Fleury, Henri Cramail, Etienne Grau
Summary: Fast, low-cost, and efficient energy storage is needed to balance intermittent sustainable energy sources. High-power capacitors made with organic polymers, such as bio-based PHUs, offer a green and scalable solution. These PHUs have high permittivity, high breakdown strength, and low dielectric losses, resulting in comparable energy storage performance to petrochemical materials and high discharge efficiency.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Materials Science, Biomaterials
Alessandra Travanut, Patricia F. Monteiro, Sean Smith, Steven M. Howdle, Anna M. Grabowska, Barrie Kellam, Michael A. R. Meier, Cameron Alexander
Summary: Passerini reactions are suitable for the preparation of drug delivery materials, enabling efficient drug conjugation and encapsulation, as well as enhanced efficacy against TNBC cells.
JOURNAL OF MATERIALS CHEMISTRY B
(2022)
Article
Materials Science, Multidisciplinary
Helene Meheust, Jean-Francois Le Meins, Etienne Grau, Henri Cramail
Summary: This study aimed to design bio-based polyesters as viscosity modifiers for lubricant properties and investigated their thermal properties. Results showed that bio-based polyricinoleate and its saturated homologous polyhydroxystearate have potential applications as viscosity modifiers in organic and mineral oils.
ACS APPLIED POLYMER MATERIALS
(2021)