Article
Engineering, Chemical
Maryam Agboluaje, Gagandeep Kaur, Eva Dusicka, Anna Urbanova, Mohammad Pishnamazi, Branislav Horvath, Miroslav Janata, Vladimir Raus, Igor Lacik, Robin A. Hutchinson
Summary: This study synthesized multi-functional polymers for personal care products through radical polymerization of acrylic acid with non-functional monomers in alcohol/water solutions. The kinetic coefficients required for the terpolymerization system were estimated from fitting experiments, and in-situ nuclear magnetic resonance spectroscopy was used to track monomer conversions and composition changes. The molar mass distributions of the polymer products were characterized by size-exclusion chromatography.
CANADIAN JOURNAL OF CHEMICAL ENGINEERING
(2023)
Article
Engineering, Chemical
Maryam Agboluaje, Robin A. Hutchinson
Summary: The influence of hydrogen bonding on the radical polymerization kinetics of methyl acrylate was studied through experimental and modeling approaches. The results showed that the rate of monomer conversion was faster in polar solvents and the molar mass of the polymer was higher in deuterated solvents. A mechanistic model was developed to describe the experimental results, taking into account factors such as acrylate backbiting, solvent viscosity, and initiator efficiency. This systematic approach provides insights into the influence of monomer content and solvent composition on acrylate polymerizations in polar media.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2022)
Article
Polymer Science
Feng Zhong, Cai-Yuan Pan
Summary: A novel mediated agent, TPPT, was successfully synthesized and used in the radical polymerization of butyl acrylate at 50 degrees C. The reaction kinetics showed that monomer conversion reached 84% within 24 hours with narrow molecular weight distributions. MALDI-TOF MS studies identified three polymerization mechanisms, indicating the effectiveness of TPPT in capturing growing radicals and forming stable chains.
Article
Nanoscience & Nanotechnology
Xin Cheng, Huan Hu, Yu Wu, Zhimin Ma, Zhiyong Ma
Summary: This study reported unique photochromic CL polymers, showing that increasing the ratio of PMA chains in PMAxBA enhances photochromism, cross-linked PMA-CL leads to the formation of larger clusters and redshift, and PBA chains in the cross-linked network weaken interchain interactions and cause a smaller redshift.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Engineering, Chemical
Fadhilah Alduraiei, Priyanka Manchanda, Bruno Pulido, Gyorgy Szekely, Suzana P. Nunes
Summary: The study demonstrates that incorporating fluorinated monomers into polyamide membranes can significantly enhance their permeability and selectivity for nonpolar solvents, improving their hydrophobicity and permeance. By preparing thin-film composite membranes through reactions in organic and aqueous phases, high-performance membranes suitable for use in petroleum refining and pharmaceutical purification can be obtained.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Materials Science, Multidisciplinary
Shuo Li, Ruchira Colaco, Anne Staubitz
Summary: Diazocine-functionalized initiators were synthesized for controlled radical polymerizations, and their efficiency in polymerizations of methyl acrylate and methacrylate was tested. The initiation of the reactions required high amounts of reducing agents and catalysts. Additionally, violet light irradiation during the reactions caused retardation or termination of the anilide compound.
ACS APPLIED POLYMER MATERIALS
(2022)
Article
Polymer Science
Gagandeep Kaur, Maryam Agboluaje, Robin A. A. Hutchinson
Summary: This paper examines the radical polymerization of methyl acrylate (MA) and N-tert-butylacrylamide (t-BuAAm) in water and ethanol solvents to demonstrate successful synthesis of commercially valuable copolymers. The experiments show that the product molar masses and composition remain stable under various operating conditions. Additionally, the experiments provide data on the influence of solvents on the polymerization rate and copolymer properties, and a previously developed model accurately describes the semi-batch operation.
Article
Materials Science, Multidisciplinary
Judith Elisabeth Rauschendorfer, Katharina Maria Thien, Manuela Denz, Sarah Koester, Florian Ehlers, Philipp Vana
Summary: Polymer layered silicate nanocomposites (PLSNs) consisting of montmorillonite (MMT) nanosheets and poly(methyl acrylate) (PMA) were synthesized and characterized, showing potential applications with controlled mechanical properties through different strategies and successful surface modification.
MACROMOLECULAR MATERIALS AND ENGINEERING
(2021)
Article
Engineering, Chemical
Quan-chao Chi, Jian Li, Chen-yi Wang, Qiang Ren
Summary: A novel silane coupling agent, 3,3-dimethoxy-8-oxo-2,9-dioxa-7-aza-3-silaundecan-11-yl acrylate (MSiA), was successfully synthesized and copolymerized with methyl acrylate to produce copolymers with adjustable molecular weights and viscosities using dodecyl mercaptan as a chain transfer agent. The resulting copolymer films showed improved tensile strength under moisture-curing conditions. The synthesis of low-viscosity methyl acrylate-co-MSiA copolymers using dodecyl mercaptan in free radical polymerization is a promising method for moisture-curable polyacrylates with potential applications in adhesives and coatings.
JOURNAL OF ADHESION SCIENCE AND TECHNOLOGY
(2021)
Article
Polymer Science
Lixin Cao, Zhengguo Cai, Mingyuan Li
Summary: A series of nickel complexes with substituted phenylphosphine ligands were synthesized and characterized. These complexes showed high activity and thermal stability in norbornene polymerization. They could also copolymerize norbornene and methyl acrylate to produce functionalized cyclic olefin copolymer, and copolymerize ethylene and methyl acrylate to produce polar functionalized polyethylene.
Article
Polymer Science
Gianluca Gazzola, Andrea Antonello, Abdirisak A. Isse, Marco Fantin
Summary: An electrochemically controlled atom transfer radical polymerization (eATRP) was successfully performed using a minimal amount of FeBr3 catalyst in a nonpolar solvent. The use of electrocatalytic methods in a highly nonpolar polymerization medium allowed for precise control over the polymerization process. Additionally, the setup of an undivided cell with simple iron wire electrodes significantly reduced electrical resistance and enabled the production of polymers with low dispersity. Examination of kinetic and thermodynamic aspects indicated that the high ATRP equilibrium constant of Fe catalysts in nonpolar environments facilitated ppm-level catalysis.
Article
Chemistry, Physical
Jonas Blahnik, Sebastian Krickl, Klaus Schmid, Eva Mueller, John Lupton, Werner Kunz
Summary: This article presents a free-radical polymerization method in a mesostructured system without surfactants or other auxiliary agents. The aim is to study the impact of surfactant-free mesostructuring on polymerization kinetics and derived polymers.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Polymer Science
Klaus Ruhland, Robert Horny, Andrea Wanzel, Sebastian Reisach, Alina Nizamutdinova, Holger Kirchhain, Ulrich Rehfuss, Leo van Wullen, Andreas Fischer, Felix Scheliga, Tobias Huebner
Summary: This study investigates seventeen samples of AN-co-MA-polymer with various MA contents using selective isotopic labeling and thermal treatment, revealing methanol as a key volatile from the MA sub-unit and the formation of methylamines from ammonia reaction with the MA sub-unit. Detailed reaction mechanisms are concluded, highlighting the importance of ammonia as a stoichiometric and/or catalytic reagent in all processes.
JOURNAL OF APPLIED POLYMER SCIENCE
(2022)
Article
Polymer Science
Jia-Wei Li, Miao Chen, Ze Zhang, Cai-Yuan Pan, Wen-Jian Zhang, Chun-Yan Hong
Summary: The composition and structure of polymers greatly impact their performance, and copolymerization of different monomers can result in polymers with diverse compositions. However, copolymerization of monomers with extremely different structures is quite challenging due to varied polymerization mechanisms.
Article
Polymer Science
Morgan J. Cooze, Nathaniel R. Barr, Robin A. Hutchinson
Summary: The study explores the use of PMDETA as a ligand in Cu(0)-mediated polymerization, demonstrating its application in the continuous production of low molecular weight poly(methyl acrylate). Results also show the versatility of using either PMDETA or Me6TREN as additional ligands for chain extension, enhancing the efficiency of block copolymer production.
MACROMOLECULAR CHEMISTRY AND PHYSICS
(2021)
Article
Chemistry, Analytical
Tomos E. Morgan, Andrew Kerr, Christopher A. Wootton, Mark P. Barrow, Anthony W. T. Bristow, Sebastien Perrier, Peter B. O'Connor
ANALYTICAL CHEMISTRY
(2020)
Article
Chemistry, Multidisciplinary
Junliang Zhang, Barbara Farias-Mancilla, Ihor Kulai, Stephanie Hoeppener, Barbara Lonetti, Sylvain Prevost, Jens Ulbrich, Mathias Destarac, Olivier Colombani, Ulrich S. Schubert, Carlos Guerrero-Sanchez, Simon Harrisson
Summary: A series of copolymers with different composition profiles, ranging from an AA-BA diblock copolymer to a linear gradient poly(AA-grad-BA) copolymer, were synthesized and investigated for their pH-responsive self-assembly behavior. The gradient-like compositions showed reversible changes in size and morphology in response to changes in pH, forming various structures like micelles and vesicles.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Polymer Science
Robert A. E. Richardson, Thiago R. Guimaraes, Murtaza Khan, Graeme Moad, Per B. Zetterlund, Sebastien Perrier
Article
Biochemistry & Molecular Biology
Sean H. Ellacott, Carlos Sanchez-Cano, Edward D. H. Mansfield, Julia Y. Rho, Ji-Inn Song, Raoul Peltier, Sebastien Perrier
Summary: The study investigated the influence of different design elements of cyclic peptide-polymer nanotubes (CPNTs) on cellular uptake, identifying an efficiently taken up tube structure with a size between 8 and 16 nm. These nanotubes were able to penetrate to the core of cells and provided insights into the behavior of CPNTs in cellular systems.
Article
Chemistry, Multidisciplinary
Qiao Song, Sofia Goia, Jie Yang, Stephen C. L. Hall, Michael Staniforth, Vasilios G. Stavros, Sebastien Perrier
Summary: This study presents a strategy for constructing efficient artificial light-harvesting systems based on supramolecular peptide nanotubes, achieving high energy transfer efficiency and stability, as well as versatile spectral emission capabilities, including outputting white light.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2021)
Article
Polymer Science
Gregoire Desnos, Adrien Rubio, Chaimaa Gomri, Mathias Gravelle, Vincent Ladmiral, Mona Semsarilar
Summary: Amphiphilic, semi-fluorinated di and triblock copolymers were synthesized via polymerization-induced self-assembly under alcoholic dispersion polymerization conditions. The study investigated the influence of the length, nature, and position of the solvophobic semi-fluorinated block, showing that the order of the blocks and the number of fluorine atoms impact the microphase segregation of the core-forming blocks and the final morphology of the nano-objects.
Article
Chemistry, Physical
Alessandra Vitale, Samantha Molina-Gutierrez, W. S. Jennifer Li, Sylvain Caillol, Vincent Ladmiral, Patrick Lacroix-Desmazes, Sara Dalle Vacche
Summary: Biobased monomers and green processes are important for sustainable material production. This study combined cardanol with MFC to produce self-standing, flexible, and transparent films with high thermal stability through photopolymerization.
Article
Biochemistry & Molecular Biology
Laura Vasilica Arsenie, Franziska Hausig, Carolin Kellner, Johannes C. Brendel, Patrick Lacroix-Desmazes, Vincent Ladmiral, Sylvain Catrouillet
Summary: Thermo-responsive hydrophilic polymers, including those showing tuneable lower critical solution temperature (LCST), have great potential in nanomedicine. The development of dual LCST/pH-responsive hydrophilic polymers is attractive in polymer science due to biological pH changes.
Review
Polymer Science
Dimitri Berne, Vincent Ladmiral, Eric Leclerc, Sylvain Caillol
Summary: This article reviews the progress in the study of the thia-Michael reaction and presents the latest developments and future directions for preparing Covalent Adaptable Networks (CANs) based on this reaction. The potential of the aza-Michael reaction for CANs application is highlighted and compared with thia-Michael-based CANs.
Article
Biochemistry & Molecular Biology
Leo Bricotte, Kamel Chougrani, Valerie Alard, Vincent Ladmiral, Sylvain Caillol
Summary: 1,3-dihydroxyacetone (DHA) is a versatile bio-based synthon derived from glycerol, primarily used as a self-tanning agent in cosmetics. This review explores the physical and chemical properties of DHA and its industrial production routes, with a focus on its potential as a bio-based building block for specialty polymers. The delicate reactivity of DHA, including dimerization and isomerization reactions, offers opportunities for the synthesis of innovative and biodegradable polymers, addressing sustainability challenges.
Article
Biochemistry & Molecular Biology
Lolwa Haydar, Wassim El Malti, Vincent Ladmiral, Ali Alaaeddine, Bruno Ameduri
Summary: New fluorinated polyhydroxyurethanes (FPHUs) were synthesized through the polyaddition reaction of a fluorinated bis(cyclocarbonate) (bis-CC) with a diamine. The fluorinated bis-CC was synthesized using a fluorinated diepoxide and LiBr catalyst. The reaction conditions were optimized and the FPHUs were characterized by various spectroscopic techniques and compared to their hydrogenated counterparts.
Article
Polymer Science
Thiago R. Guimaraes, Y. Loong Bong, Steven W. Thompson, Graeme Moad, Sebastien Perrier, Per B. Zetterlund
Summary: This study investigates the effect of the Z-group of RAFT agents on the nucleation step of aqueous RAFT PISA, revealing that the hydrophilicity of the Z-group influences the polymerization rates and chain extension success.