Article
Polymer Science
Xi Zhao, Enxiang Liang, Feixiang Zhou, Guoxiang Wang, Yixue Xu, Wenyuan Xu
Summary: In this study, a series of well-defined acrylamide/methyl methacrylate random copolymers were synthesized and characterized. The reaction kinetics, reactivity ratios, and thermal stability of the copolymers were investigated. The obtained copolymer showed controlled features and improved thermal stability.
IRANIAN POLYMER JOURNAL
(2022)
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
Shehla Mushtaq, Muhammad Asad Abbas, Habib Nasir, Azhar Mahmood, Mudassir Iqbal, Hussnain A. Janjua, Qamar Malik, Nasir M. Ahmad
Summary: The study focuses on mitigating the detrimental effects of algae biofouling on manufacturing processes by developing environmentally friendly active antialgal cationic amphiphilic copolymers. Increasing PDMAEMA concentration enhances the copolymers' antialgal performance, reducing algae adhesion. Copolymers with higher DMAEMA concentration exhibit stronger hydrophilicity and lower adhesion to Dictyosphaerium algae.
JOURNAL OF APPLIED POLYMER SCIENCE
(2022)
Article
Polymer Science
Thi Phuong Thu Nguyen, Nadine Barroca-Aubry, Ludovic Costa, Yann Bourdreux, Gilles Doisneau, Philippe Roger
Summary: This study reports for the first time the controlled synthesis of PPFPMA through Cu(0)-mediated RDRP method, investigating influencing factors and finding the optimal conditions to successfully synthesize low dispersity PPFPMA with controlled polymerization features.
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
Materials Science, Characterization & Testing
Ming Gong, Daijun Zhang, Jiayang Zhang, Jun Li, Xiangbao Chen
Summary: In this study, the radical polymerization of methyl methacrylate (MMA) was optimized by investigating the initiator concentration and the catalytic effect of dimethyl-p-toluidine (DMT). Results showed that the mechanical properties of polymethyl methacrylate (PMMA) reached the optimal value under a specific BPO:DMT ratio of 2:1.
POLYMERS & POLYMER COMPOSITES
(2022)
Article
Polymer Science
Hanyu Lv, Jiaqi An, Fanfan Li, Yanwu Zhang
Summary: Reversible deactivation radical polymerization (RDRP) is a convenient and efficient technique for synthesizing polymers with precise structure. dl-Methionine is assessed as a control agent in RDRP of styrene and methyl methacrylate, effectively reducing polymer dispersity. The use of dl-Methionine allows for high end fidelities in the synthesis of polymethyl methacrylate-block-polystyrene.
MACROMOLECULAR RAPID COMMUNICATIONS
(2023)
Article
Polymer Science
Tayfun Bel, Shima Mehranpour, Atilla Volga Sengul, Zeynep Camtakan, Nilgun Baydogan
Summary: Poly (methyl methacrylate) modification by colemanite (CMT) addition improved beta shielding effectiveness, particularly for equipment in aviation and aerospace industries. Beta transmission changes of the composite were examined before and after space environmental utilization, showing enhancement of beta attenuation after CMT addition.
JOURNAL OF APPLIED POLYMER SCIENCE
(2021)
Article
Polymer Science
Mahmut Muhammettursun, Tayfun Bel, Elif Kocacinar, Ecem Erman, Fuat Berke Gul, Andy Augousti, Nilgun Baydogan
Summary: The technique for synthesizing poly (methyl methacrylate) (PMMA) using graphene nanoplatelets (GNPs) has been improved to enhance the elastic properties of the polymer. The addition of GNPs at 2 wt% by mass increased compressive strength by 42.7% and Rockwell hardness by 19.9%. The structural changes due to the addition of GNPs were found to be uniquely linked to improvements in elastic parameters of the PMMA/GNPs nanocomposite.
JOURNAL OF APPLIED POLYMER SCIENCE
(2021)
Article
Polymer Science
Dimitrios Selianitis, Stergios Pispas
Summary: This work introduces a series of novel multi-responsive hyperbranched copolymers which self-organize in aqueous media. The copolymers, prepared by RAFT polymerization, exhibit responsiveness to changes in solution temperature and pH, and are able to encapsulate hydrophobic drugs like curcumin. These hyperbranched copolymers show potential as candidates for drug delivery and bio-imaging applications, as they demonstrate stability in the presence of serum proteins.
Article
Polymer Science
Chujuan Huang, Toyoko Suzuki, Hideto Minami
Summary: In this study, micrometer-sized block copolymer particles were successfully synthesized using iodine transfer polymerization as a first attempt. Methyl methacrylate (MMA) and vinyl acetate (VAc) were used as the hydrophilic monomers in a microsuspension system. The resulting poly(methyl methacrylate)-block-poly(vinyl acetate) (PMMA-b-PVAc) particles exhibited the desired molecular weight and relatively narrow molecular weight distribution, despite the low degree of polymerization of the PVAc block. The hydrolysis of these particles resulted in three different morphologies, and the formation mechanism of each morphology was proposed, attributing it to the interaction between the iodic ions generated from the degradation of iodine end groups and the elongated poly(vinyl alcohol) (PVA) segments derived from PVAc.
Article
Polymer Science
Yusuke Mizuta, Ryuichi Sugimoto, Hiromu Okada, Chao Zhao, Kazuya Kobiro, Nagatoshi Nishiwaki
Summary: In this study, the surface of an ETFE film was modified through chemical methods by grafting polymerization. The grafting efficiency was strongly influenced by reaction conditions, and the modified film surface showed improved dyeability.
JOURNAL OF APPLIED POLYMER SCIENCE
(2022)
Article
Chemistry, Applied
Henrique T. de Matos, Tiago F. C. Cruz, M. Amelia N. D. A. Lemos, Pedro T. Gomes
Summary: The role of 2-iminopyrrolyl copper(I) complexes in the Reversible-Deactivation Radical Polymerization (RDRP) of methyl methacrylate (MMA) is described. A family of mononuclear and binuclear 2-iminopyrrolyl copper(I) complexes with phosphine ligands were synthesized and characterized. Complex 7 achieved the best results, operating via the interplay of Atom Transfer Radical Polymerization/Organometallic Mediated Radical Polymerization (ATRP/OMRP) mechanisms.
APPLIED ORGANOMETALLIC CHEMISTRY
(2023)
Article
Polymer Science
Xueyi Yu, Zeming Fang, Yijing Qin, Dong Lu, Qianfa Liu, Li Luo, Zhiyong Lin, Ke Wang
Summary: This study focused on the residuals of -OH and -C = C- groups in PPO/TAIC composite systems, and utilized FTIR, H-1-NMR, and C-13-SSNMR for qualitative and quantitative characterization. Results showed that most phenolic hydroxyl groups had been substituted, while the unreacted -C = C- groups could be as high as 60.37% after curing.
JOURNAL OF POLYMER RESEARCH
(2021)
Article
Polymer Science
Paul Galanopoulo, Laura Sinniger, Noemie Gil, Didier Gigmes, Catherine Lefay, Yohann Guillaneuf, Maelle Lages, Julien Nicolas, Franck D'Agosto, Muriel Lansalot
Summary: Degradable poly(methyl methacrylate) (PMMA) particles were synthesized using radical emulsion polymerization in water, with a cyclic ketene acetal, 5,6-benzo-2-methylene-1,3-dioxepane (BMDO), as a co-monomer. The stability of BMDO in aqueous media and the degradation mechanism were studied to understand its use in emulsion and its incorporation into the copolymer chains. Stable latexes with varying amounts of BMDO inserted units (2-6.4 mol%) were obtained, and the resulting copolymer exhibited an average molar mass loss of 90% during degradation in a basic medium.
Article
Chemistry, Physical
G. Layrac, S. Harrisson, M. Destarac, C. Gerardin, D. Tichit
APPLIED CLAY SCIENCE
(2020)
Article
Chemistry, Physical
Matias Menossi, Juan M. Milanesio, Severine Camy, Simon Harrisson, Miriam Strumia, Mathias Destarac
JOURNAL OF SUPERCRITICAL FLUIDS
(2020)
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
Multidisciplinary Sciences
Arnaud Kengmo Tchoupa, Kate E. Watkins, Rebekah A. Jones, Agnes Kuroki, Mohammad Tauqeer Alam, Sebastien Perrier, Yin Chen, Meera Unnikrishnan
SCIENTIFIC REPORTS
(2020)
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
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.
Article
Polymer Science
Barbara Farias-Mancilla, Junliang Zhang, Ihor Kulai, Mathias Destarac, Ulrich S. Schubert, Carlos Guerrero-Sanchez, Simon Harrisson, Olivier Colombani
Article
Chemistry, Physical
Aaron M. King, Caroline Bray, Stephen C. L. Hall, Joseph C. Bear, Lara K. Bogart, Sebastien Perrier, Gemma-Louise Davies
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2020)
Article
Polymer Science
Jiajia Li, Andrew Kerr, Satu Haekkinen, Thomas Floyd, Mengmeng Zhang, Xiangqiang Pan, Xiulin Zhu, Sebastien Perrier, Jian Zhu