Article
Green & Sustainable Science & Technology
Akintomiwa Olumide Esan, Siwaporn Meejoo Smith, Shangeetha Ganesan
Summary: This study utilized PFAD and SBC as feedstock and catalyst support for glycerol-free biodiesel production. DMC was used as the methylating agent. The synthesized acid catalyst efficiently converted FFA in PFAD to FAMEs, achieving a maximum conversion efficiency of 93.18% under optimal reaction conditions.
JOURNAL OF CLEANER PRODUCTION
(2022)
Review
Engineering, Biomedical
Imran Ansari, Prabhjeet Singh, Anupama Mittal, Ram Mahato, Deepak Chitkara
Summary: Bis-MPA derived cyclic carbonates have garnered significant attention for their versatile applications in the field of grafted biodegradable polymers. They have evolved into a multi-functional platform with diverse applications in various fields.
Article
Chemistry, Multidisciplinary
Sami Fadlallah, Aihemaiti Kayishaer, Mattia Annatelli, Louis M. M. Mouterde, Aurelien A. M. Peru, Fabio Arico, Florent Allais
Summary: Cellulose-derived photocrosslinkable polycarbonates with renewable citronellol pendant chains were synthesized and four repeating units were identified in the polymer structure. The relative percentages of the repeating units and molecular weights of the polymers can be finely tuned by varying the catalyst and reaction conditions. The synthesized polymers exhibited low glass transition temperatures and high thermal decomposition temperatures. The citronellol pendant chains could be crosslinked via ultraviolet irradiation to further control the polymer properties.
Article
Polymer Science
Oleksandr Ivanchenko, Stephane Mazieres, Simon Harrisson, Mathias Destarac
Summary: This study found that bleach is a more effective degrading agent for polymers with thioester and thioacetal linkages compared to classical nucleophilic treatment with amines.
Article
Thermodynamics
Claire M. Gregoire, Sean P. Cooper, Maryam Khan-Ghauri, Sulaiman A. Alturaifi, Eric L. Petersen, Olivier Mathieu
Summary: The pyrolysis of three linear carbonates, namely dimethyl carbonate (DMC), diethyl carbonate (DEC), and ethyl methyl carbonate (EMC), was investigated using a CO spectroscopic laser diagnostic. The experiments were conducted in reflected shock waves with varying temperatures and near atmospheric pressure. A new detailed chemical kinetics pyrolysis mechanism encompassing all three linear carbonates was developed, and it accurately reproduced the results for DMC and DEC. However, predicting CO formation for EMC remains challenging due to the poor methanol pyrolysis chemistry displayed by modern detailed kinetics mechanisms.
COMBUSTION AND FLAME
(2023)
Article
Polymer Science
Yaroslav I. Derikov, Daniil R. Belousov, Alexander V. Finko, Georgii A. Shandryuk, Nina M. Kuz'menok, Sergei G. Mikhalyonok, Vladimir S. Bezborodov, Elena V. Chernikova, Raisa V. Talroze
Summary: In this study, we synthesized new vinyl ketone monomers BVK and QVK with mesogenic substituents. Compared with previously synthesized TVK, all of them can form crystals, while the ability to exhibit liquid crystalline behavior depends on the number of phenyl substituents attached to the para-position of the phenoxy group, and is observed for TVK and QVK only. These monomers can undergo self-polymerization and free radical polymerization under the action of AIBN. We also successfully conducted RAFT polymerization of BVK and TVK using asymmetrical trithiocarbonates. The synthesized poly(vinyl ketones) exhibit LC behavior and can undergo photodegradation upon UV irradiation.
Review
Polymer Science
Fuyun Pei, Lijuan Liu, Huie Zhu, Haixin Guo
Summary: Replacing fossil-based polymers with renewable bio-based polymers is a promising solution to environmental issues and climate change. The production of new lignocellulose-based polymers involves five steps: fractionation, depolymerization, conversion, further conversion, and polymerization. This review article focuses on the progress of bio-based monomers derived from lignocellulose, particularly the preparation of monomers from 5-hydroxymethylfurfural and vanillin, as well as their polymerization methods. It also discusses the latest research progress, application scenarios, and future trends in bio-based polymeric materials.
Article
Polymer Science
Daniele Caretti, Lorenzo Binda, Natalia Casis, Diana A. Estenoz
Summary: A method for synthesizing monomers containing N-methyl-D-glucamine moieties and polymerizing them to develop polymeric films with high arsenic ion affinity and selectivity was developed. The polymer films exhibited improved sensitivity and reproducible capability to capture arsenic, with around 90% capturing ability.
JOURNAL OF APPLIED POLYMER SCIENCE
(2022)
Article
Chemistry, Physical
Xiang Gao, Biyuan Hong, Meiyu Zhang, Dan Li
Summary: This study measured and studied the properties of binary mixtures of dimethyl carbonate and four fatty acid esters, and calculated the excess molar volumes, viscosity deviations, and excess Gibbs energy of activation. The experimental results are useful for the study of biodiesel-carbonate blended fuels.
JOURNAL OF SOLUTION CHEMISTRY
(2023)
Article
Chemistry, Physical
Sa Xue, Kun Hou, Ziwen Zhang, Hui Liu, Chenyang Zhu, Xiangyang Liu, Maogang He
Summary: The study developed prediction models for density and viscosity of fatty acid esters based on their molecular structure, finding that the properties are influenced by temperature, pressure, and molecular structure. Different models were proposed for various types of fatty acid esters with low average absolute relative deviations.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Energy & Fuels
Grittima Kongprawes, Doonyapong Wongsawaeng, Peter Hosemann, Kanokwan Ngaosuwan, Worapon Kiatkittipong, Suttichai Assabumrungrat
Summary: The study investigated a novel technique for producing H-FAME from soybean FAME using DBD plasma, achieving high conversion and yield with improved oxidation stability. The green hydrogenation method demonstrated effective initiation of hydrogenation reaction without the need for a catalyst. This plasma process provides a new eco-friendly alternative for H-FAME production.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2021)
Article
Biotechnology & Applied Microbiology
Fernando Bracalente, Martin Sabatini, Ana Arabolaza, Hugo Gramajo
Summary: This research successfully engineered Escherichia coli to synthesize esters with multi-methyl-branched chains. The use of a coculture system and optimization with response surface methodology significantly improved the production yield compared to monoculture. The scalability of this process was confirmed in high-cell density fed-batch fermentations.
MICROBIAL CELL FACTORIES
(2022)
Article
Polymer Science
Sami Fadlallah, Amandine L. Flourat, Louis M. M. Mouterde, Mattia Annatelli, Aurelien A. M. Peru, Antoine Gallos, Fabio Arico, Florent Allais
Summary: The homopolymerization of bis(gamma-lactone) 2H-HBO-HBO in basic conditions was reported for the first time, resulting in renewable poly(vinyl-ether lactone) copolymers with a highly hyperbranched structure. Polymerization of (S)-gamma-hydroxymethyl-alpha,beta-butenolide (HBO) was also conducted on a large scale, producing a new hyperbranched polymer. Both types of polymers have potential for industrial-scale production due to their interesting properties and easy preparation.
MACROMOLECULAR RAPID COMMUNICATIONS
(2021)
Article
Green & Sustainable Science & Technology
Miquele L. Padula, Arthur S. Romero, Dachamir Hotza, Murilo D. M. Innocentini, Maria E. G. Pinto, Augusto S. Pedrini, Evertan Rebelatto, Luiz Fernando B. Ribeiro, Guilherme Zin, J. Vladimir Oliveira, Marco Di Luccio
Summary: This study investigated the efficiency of microfiltration with a polymeric membrane for the dehydration of fatty acid ester mixtures. The modified membrane showed improved performance with higher fluxes and enhanced dehydration compared to the unmodified control membrane.
Article
Energy & Fuels
Ricardo Garcia-Morales, Abel Zunigo-Moreno, Francisco J. Veronico-Sanchez, Jose Domenzain-Gonzalez, Hugo I. Perez-Lopez, Christian Bouchot, Octavio Elizalde-Solis
Summary: The aim of this study was to synthesize fatty acid methyl esters from waste beef tallow using one-step supercritical methanol transesterification without pre-treatment. Animal waste samples were collected from local markets and experiments were conducted in a batch reactor made of Inconel 625 alloy. Various parameters such as methanol:waste beef tallow molar ratio, temperature, and pressure were investigated to obtain the fatty acid methyl esters, which were then characterized and the overall yield was calculated.
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
Chemistry, Organic
Kevin A. Waibel, Dennis Barther, Triantafillia Malliaridou, Dafni Moatsou, Michael A. R. Meier
Summary: An efficient isocyanide-based synthesis of S-thiocarbamates was developed, allowing direct conversion of N-formamides into thiocarbamates without the need for isolation and purification of the isocyanide component, thus reducing environmental impact and increasing synthesis efficiency. The method was applied to synthesize a library of sixteen thiocarbamates and investigate reaction mechanism, as well as preparing four norbornene-based thiocarbamate monomers for controlled ring-opening metathesis polymerization (ROMP) reactions. The resulting polymers were characterized using size-exclusion chromatography (SEC) and their properties were analyzed with differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA).
EUROPEAN JOURNAL OF ORGANIC CHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
Yasmin S. Raupp, Pia S. Loeser, Silke Behrens, Michael A. R. Meier
Summary: The study found that palladium nanoparticles, stabilized by poly(vinylpyrrolidone), catalyze the ring-opening of limonene dioxide with water, showing selectivity. Different concentrations of poly(vinylpyrrolidone) alone resulted in different selectivities towards exo-cyclic or endo-cyclic epoxide ring-opening.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2021)
Article
Chemistry, Multidisciplinary
Jonas Wolfs, Roman Nickisch, Lisa Wanner, Michael A. R. Meier
Summary: The study introduces a novel concept combining tandem catalysis and cellulose derivatization, utilizing a single catalyst for three transformations in a DMSO/DBU/CO2 switchable solvent system. Results show that the tandem reaction approach is more beneficial in terms of efficiency and sustainability compared to stepwise synthesis. By analyzing the obtained products, researchers controlled the degree of substitution of O-cellulose thiocarbamates.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2021)
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)
Editorial Material
Chemistry, Multidisciplinary
Belen Martin-Matute, Michael A. R. Meier, Thomas-Xavier Metro, Stefan G. Koenig, Helen F. Sneddon, Putla Sudarsanam, Paul Watts
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2021)
Editorial Material
Chemistry, Multidisciplinary
David T. Allen, D. Julie Carrier, Jingwen Chen, Nicholas Gathergood, Jeannette M. Garcia, Jinlong Gong, Hongxian Han, King Kuok (Mimi) Hii, Bing-Joe Hwang, Asha Liza James, Mihir Jha, Peter Licence, Andrew C. Marr, Michael Meier, Audrey Moores, Ryuhei Nakamura, Thalappil Pradeep, Liane Rossi, Bert Sels, Bala Subramaniam, Michael K. C. Tam, Lin Zhuang, Julio F. Serrano
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2021)
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
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
Chemistry, Multidisciplinary
Jonas Wolfs, Michael A. R. Meier
Summary: The homogeneous cellulose acetylation process using the DBU/CO2 switchable solvent system is demonstrated to be efficient and sustainable, utilizing vinyl acetate as a benign acetylation agent under mild conditions. It allows for straightforward recyclability of all components with high recycling ratios (87.0-98.9%). Compared to traditional methods, this process shows less cellulose backbone degradation and improved mechanical properties of solvent casted foils, resulting in an E-factor of 1.92 for the overall process, emphasizing sustainability and efficiency.
Article
Chemistry, Multidisciplinary
Xuemei Liu, Chaonan Cui, Shuoshuo Wei, Jinyu Han, Xinli Zhu, Qingfeng Ge, Hua Wang
Summary: This study presents a new strategy for designing efficient photocatalysts that can convert CO2 into hydrocarbons by utilizing synergistic catalytic sites. The findings provide a solution for the selective photocatalytic reduction of CO2 to CH4.
Article
Chemistry, Multidisciplinary
Chengxian Hu, Dan Wang, Lu Wang, Ying Fu, Zhengyin Du
Summary: A novel one-pot, three-component reaction conducted under electrochemical conditions was studied. The reaction involved 2-aminothiophenols, aldehydes, and malononitrile, using TBABF4 as an electrolyte and CuI as a catalyst. The proposed reaction mechanism suggested that CuI served as an electron relay. This method offers simplified operation, high atom economy, and mild reaction conditions.
Article
Chemistry, Multidisciplinary
Zhi Yang, Yu Chen, Linxi Wan, Yuxiao Li, Dan Chen, Jianlin Tao, Pei Tang, Fen-Er Chen
Summary: A highly enantioselective method for the complete hydrogenation of pyrimidinium salts using Ir/(S,S)-f-Binaphane complex as the catalyst was developed. This method provides easy access to fully saturated chiral hexahydropyrimidines, which are prevalent in many bioactive molecules. The reactions exhibit high yields and enantioselectivities under mild reaction conditions without additives. Successful application of this methodology in a continuous flow fashion further extends its practical utility.
Article
Chemistry, Multidisciplinary
Tina Jeoh, Jennifer Danger Nill, Wujun Zhao, Sankar Raju Narayanasamy, Liang Chen, Hoi-Ying N. Holman
Summary: In this study, the enzymatic hydrolysis of cellulose was investigated using real-time infrared spectromicroscopy. The spatial heterogeneity of cellulose was found to impact the hydrolysis kinetics. Hydration affected cellulose ordering, and Cel7A preferentially removed less extensively hydrogen bonded cellulose.
Article
Chemistry, Multidisciplinary
Tiphaine Richard, Walid Abdallah, Xavier Trivelli, Mathieu Sauthier, Clement Dumont
Summary: An effective method of grafting functionalities onto lignin based on glycerol carbonate has been developed using an efficient nickel-catalysed telomerisation reaction. This method allows lignin to have new reactive functions and reduces the glass transition temperatures of modified lignins, thereby expanding the application range of lignin-based resins.
Article
Chemistry, Multidisciplinary
Jing Qi, Xiyan Wang, Gan Wang, Srinivas Reddy Dubbaka, Patrick ONeill, Hwee Ting Ang, Jie Wu
Summary: This study presents a green and environmentally friendly approach for the synthesis of imides using electrocatalytic oxidation with H2O as the oxygen source. The method eliminates the need for toxic or expensive oxidants and achieves high yields under mild reaction conditions. It shows broad substrate compatibility and potential for industrial applications.
Article
Chemistry, Multidisciplinary
Babasaheb Sopan Gore, Lin-Wei Pan, Jun-Hao Lin, Yi-Chi Luo, Jeh-Jeng Wang
Summary: Here, we report a visible light-promoted intramolecular radical cascade reaction for the construction of fluorenol and naphthalene-fused cyclopropyl carbaldehyde derivatives. This method offers mild reaction conditions, a broad substrate scope, excellent step efficiency, and scalability, without the need for external chemical oxidants. The novelty of this protocol was demonstrated by synthesizing chrysene analogs and performing late-stage functionalizations.
Article
Chemistry, Multidisciplinary
Juho Antti Sirvio, Idamaria Romakkaniemi, Juha Ahola, Svitlana Filonenko, Juha P. Heiskanen, Ari Ammala
Summary: This article discusses the method of using supramolecular interaction between an aromatic hydrogen bond donor and lignin to achieve rapid delignification of softwood at low temperatures.
Article
Chemistry, Multidisciplinary
Yunyan Meng, Chunxiang Pan, Na Liu, Hongjiang Li, Zixiu Liu, Yao Deng, Zixiang Wei, Jianbin Xu, Baomin Fan
Summary: A novel visible light-driven synthesis method for 2,3-diamines has been developed, which has mild conditions, avoids the use of metal reagents, and can synthesize diamines and diols in one pot.
Article
Chemistry, Multidisciplinary
Mingqing Huang, Haiyang Huang, Mengyao You, Xinxin Zhang, Longgen Sun, Chao Chen, Zhichao Mei, Ruchun Yang, Qiang Xiao
Summary: A direct air-oxidized strategy for the synthesis of benzo[b]phosphole oxides was developed in this study. Arylphosphine oxides were transformed into phosphinoyl radicals, which were further combined with various alkynes to achieve the desired products. DFT calculations revealed the mechanism of phosphinoyl radical formation.
Article
Chemistry, Multidisciplinary
Anwei Wang, Jiayin Huang, Chunsheng Zhao, Yu Fan, Junfeng Qian, Qun Chen, Mingyang He, Weiyou Zhou
Summary: This study demonstrates an innovative strategy for the aerobic oxidation of C(sp(3))-H bonds using gamma-valerolactone. By optimizing the reaction conditions and utilizing specific catalysts, efficient oxidation of C(sp(3))-H bonds is achieved with good chemoselectivity in certain cases.
Article
Chemistry, Multidisciplinary
Shun Li, Likai Tong, Zhijian Peng, Bo Zhang, Xiuli Fu
Summary: Sulfide compounds show promise as electrocatalysts for water splitting, but their performance is limited by factors such as limited active sites and hindered substance transport. This study successfully prepared a high-entropy sulfide (ZnCoMnFeAlMg)(9)S-8, which reduced grain size and increased specific surface area, enabling the realization of a dual-functional catalyst with multiple catalytic sites. High entropy also modulated the electronic properties of sulfides, reducing the potential energy barrier for hydrolysis. This research introduces a new approach for functionalizing high entropy nanomaterials and improves the performance of water splitting catalysts.