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Zhao X, Yang S, Deng J, Zhang J. Reversibly stealth QR code based on N-methylmaleimide-vinyl acetate copolymers under the condition of acid-base change. REACT FUNCT POLYM 2022. [DOI: 10.1016/j.reactfunctpolym.2022.105241] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Microstructure-driven self-assembly and rheological properties of multi-responsive soft microgel suspensions. J Colloid Interface Sci 2021; 581:806-815. [PMID: 32814199 DOI: 10.1016/j.jcis.2020.07.137] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2020] [Revised: 07/26/2020] [Accepted: 07/27/2020] [Indexed: 01/23/2023]
Abstract
HYPOTHESES The deformation and swelling ability of microgels is influenced by the crosslinking distribution. Varying microgels microstructure is expected to obtain suspensions with different flow behavior and thereby, different rheological properties. EXPERIMENTS Different multi-responsive microgels were synthesized using two different crosslinkers and varying their amounts: N,N-methylene bis-acrylamide (MBA) and oligo(ethylene glycol) diacrylate (OEGDA). The rheological results were obtained by zero-shear viscosity and long-time creep measurements on concentrated microgel suspensions Microgel microstructure was analyzed by 1H nuclear magnetic resonance transverse relaxation measurements. FINDINGS At a constant crosslinking rate, we show that the viscosity of OEGDA-crosslinked microgels diverges at a higher concentration than MBA ones, suggesting a looser shell and less restricted dangling chains at the periphery for the later. By scaling with the effective volume fraction, the viscosity curves of the different microgel suspensions reduce into a single curve and closely follow hard sphere models up to ϕeff < 0.45. The results from creep tests revealed a much higher yield stress for MBA-crosslinked microgels, strengthening the hypothesis of a looser shell for the later. Finally, transverse relaxation (T2) NMR measurements demonstrated that, although all microgels exhibit a core-shell microstructure, MBA samples present a less crosslinked shell corroborating with the rheological results.
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Zhou X, Ji H, Hu GH, Wang R, Zhang L. A solvent-less green synthetic route toward a sustainable bio-based elastomer: design, synthesis, and characterization of poly(dibutyl itaconate- co-butadiene). Polym Chem 2019. [DOI: 10.1039/c9py01393h] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Synthesis of a novel bio-based elastomer based on bio-derived monomers by using a solvent-less synthetic strategy.
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Affiliation(s)
- Xinxin Zhou
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering & State Key Laboratory of Organic-Inorganic Composites & Beijing Laboratory of Biomedical Materials
- Beijing University of Chemical Technology
- Beijing 100029
- P. R. China
| | - Haijun Ji
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering & State Key Laboratory of Organic-Inorganic Composites & Beijing Laboratory of Biomedical Materials
- Beijing University of Chemical Technology
- Beijing 100029
- P. R. China
| | - Guo-Hua Hu
- Laboratoire Réactions et Génie des Procédés (CNRS UMR 7274)
- CNRS-Université de Lorraine
- ENSIC
- 54001 Nancy
- France
| | - Runguo Wang
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering & State Key Laboratory of Organic-Inorganic Composites & Beijing Laboratory of Biomedical Materials
- Beijing University of Chemical Technology
- Beijing 100029
- P. R. China
| | - Liqun Zhang
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering & State Key Laboratory of Organic-Inorganic Composites & Beijing Laboratory of Biomedical Materials
- Beijing University of Chemical Technology
- Beijing 100029
- P. R. China
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Boschert D, Schneider-Chaabane A, Himmelsbach A, Eickenscheidt A, Lienkamp K. Synthesis and Bioactivity of Polymer-Based Synthetic Mimics of Antimicrobial Peptides (SMAMPs) Made from Asymmetrically Disubstituted Itaconates. Chemistry 2018; 24:8217-8227. [PMID: 29600579 PMCID: PMC7611503 DOI: 10.1002/chem.201800907] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2018] [Revised: 03/26/2018] [Indexed: 12/27/2022]
Abstract
A series of asymmetrically disubstituted diitaconate monomers is presented. Starting from itaconic anhydride, functional groups could be placed selectively at the two nonequivalent carbonyl groups. By using 2D NMR spectroscopy, it was shown that the first functionalization step occurred at the carbonyl group in the β position to the double bond. These monomers were copolymerized with N,N-dimethylacrylamide (DMAA) to yield polymer-based synthetic mimics of antimicrobial peptides (SMAMPs). They were obtained by free radical polymerization, a metal-free process, and still maintained facial amphiphilicity at the repeat unit level. This eliminates the need for laborious metal removal and is advantageous from a regulatory and product safety perspective. The poly(diitaconate-co-DMAA) copolymers obtained were statistical to alternating, and the monomer feed ratio roughly matched that of the repeat unit content of the copolymers. Investigations of varied R group hydrophobicity, repeat unit ratio, and molecular mass on antimicrobial activity against Escherichia coli and on compatibility with human keratinocytes showed that the polymers with the longest R groups and lowest DMAA content were the most antimicrobial and hemolytic. This is in agreement with the biological activity of previously reported SMAMPs. Thus, the design concept of facial amphiphilicity has successfully been transferred, but the selectivity of these polymers for bacteria over mammalian cells still needs to be optimized.
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Affiliation(s)
- David Boschert
- Freiburg Center for Interactive Materials and Bioinspired Technologies (FIT) and Department of Microsystems Engineering (IMTEK), Albert-Ludwigs-Universität, Georges-Köhler-Allee 105, 79110 Freiburg, Germany
| | - Alexandra Schneider-Chaabane
- Freiburg Center for Interactive Materials and Bioinspired Technologies (FIT) and Department of Microsystems Engineering (IMTEK), Albert-Ludwigs-Universität, Georges-Köhler-Allee 105, 79110 Freiburg, Germany
| | - Andreas Himmelsbach
- Freiburg Center for Interactive Materials and Bioinspired Technologies (FIT) and Department of Microsystems Engineering (IMTEK), Albert-Ludwigs-Universität, Georges-Köhler-Allee 105, 79110 Freiburg, Germany
| | - Alice Eickenscheidt
- Freiburg Center for Interactive Materials and Bioinspired Technologies (FIT) and Department of Microsystems Engineering (IMTEK), Albert-Ludwigs-Universität, Georges-Köhler-Allee 105, 79110 Freiburg, Germany
| | - Karen Lienkamp
- Freiburg Center for Interactive Materials and Bioinspired Technologies (FIT) and Department of Microsystems Engineering (IMTEK), Albert-Ludwigs-Universität, Georges-Köhler-Allee 105, 79110 Freiburg, Germany
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Reverse iodine transfer radical copolymerization of vinyl acetate and vinyl benzoate: a kinetic study. Polym Bull (Berl) 2017. [DOI: 10.1007/s00289-017-2130-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Rashid Z, Ranjha NM, Razzaq R, Raza H. Fabrication and in vitro evaluation of novel pH-sensitive poly (2-methoxyethyl methacrylate-co-itaconic acid) microgels. ADVANCES IN POLYMER TECHNOLOGY 2016. [DOI: 10.1002/adv.21786] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Zermina Rashid
- Faculty of Pharmacy; Bahauddin Zakariya University; Multan Pakistan
| | - Nazar M. Ranjha
- Faculty of Pharmacy; Bahauddin Zakariya University; Multan Pakistan
| | - Rabia Razzaq
- Faculty of Pharmacy; Bahauddin Zakariya University; Multan Pakistan
| | - Hina Raza
- Faculty of Pharmacy; Bahauddin Zakariya University; Multan Pakistan
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Photoinduced Copolymerization of APMP-MMA: The Role of Reactive Hindered Amine APMP. INT J POLYM SCI 2016. [DOI: 10.1155/2016/5368602] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
4-Acryloyl-1,2,2,6,6-pentamethyl-piperidinol (APMP) is a reactive hindered amine that prolongs the service life of the polymeric materials and exhibits high stability, good resistance to extraction, and low toxicity. In this paper, a photoinduced free radical copolymerization of APMP and methyl methacrylate (MMA) is accomplished at ambient temperature in solution. APMP plays a key role in the copolymerization, owing to the nitroxides generated in situ from the moiety of 1,2,2,6,6-pentamethyl-piperidine under UV irradiation, and mediates the copolymerization, which is confirmed by the linear kinetics. With the increment of initial monomer feed ratios of APMP/MMA, both the copolymerization rate and the average molecular weight increase. According to the reactivity ratios from the extended Kelen-Tüdos (KT) method at high conversion by1H NMR spectroscopy, a nonlinear model is established and the sequential distribution in the copolymers is also investigated. The dispersion of APMP units is regulated by the feed ratios and reactivity ratios.
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Zhou J, Zhang T, Liu X. Reactivity ratios and sequence structures of the copolymers prepared by photo-induced copolymerization of MMA with MPMP. JOURNAL OF POLYMER RESEARCH 2014. [DOI: 10.1007/s10965-014-0532-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Karthika JS, Vishalakshi B. Microwave-Assisted Synthesis and Characterization of Poly(itaconic acid) Grafted Gellan Gum. INTERNATIONAL JOURNAL OF POLYMER ANALYSIS AND CHARACTERIZATION 2014. [DOI: 10.1080/1023666x.2014.872815] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Mechanical properties of pH-responsive poly(2-hydroxyethyl methacrylate/methacrylic acid) microgels prepared by inverse microemulsion polymerization. REACT FUNCT POLYM 2014. [DOI: 10.1016/j.reactfunctpolym.2013.11.003] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Preusser C, Hutchinson RA. An In-Situ NMR Study of Radical Copolymerization Kinetics of Acrylamide and Non-Ionized Acrylic Acid in Aqueous Solution. ACTA ACUST UNITED AC 2013. [DOI: 10.1002/masy.201300048] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Calista Preusser
- Department of Chemical Engineering, Dupuis Hall; Queen's University; Kingston Ontario K7L 3N6 Canada
| | - Robin A. Hutchinson
- Department of Chemical Engineering, Dupuis Hall; Queen's University; Kingston Ontario K7L 3N6 Canada
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A comprehensive study on the kinetics of aqueous free-radical homo- and copolymerization of acrylamide and diallyldimethylammonium chloride by online 1H-NMR spectroscopy. JOURNAL OF POLYMER RESEARCH 2013. [DOI: 10.1007/s10965-013-0239-9] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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13
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Silylated montmorillonite based molecularly imprinted polymer for the selective binding and controlled release of thiamine hydrochloride. REACT FUNCT POLYM 2013. [DOI: 10.1016/j.reactfunctpolym.2013.05.004] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Işıklan N, İnal M, Kurşun F, Ercan G. pH responsive itaconic acid grafted alginate microspheres for the controlled release of nifedipine. Carbohydr Polym 2011. [DOI: 10.1016/j.carbpol.2010.12.054] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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15
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Sünbül D, Paril A, Alb AM, Catalgil-Giz H, Giz AT. Monomer and radical reactivity ratios in 4-vinylbenzenesulfonic acid sodium salt-acrylamide copolymerization in 0.1M NaCl solution. J Appl Polym Sci 2010. [DOI: 10.1002/app.33134] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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In situ monitoring of coordination copolymerization of butadiene and isoprene via ATR-FTIR spectroscopy. CHINESE JOURNAL OF POLYMER SCIENCE 2010. [DOI: 10.1007/s10118-010-9034-9] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Işıklan N, Kurşun F, İnal M. Graft copolymerization of itaconic acid onto sodium alginate using ceric ammonium nitrate as initiator. J Appl Polym Sci 2009. [DOI: 10.1002/app.30549] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Fonseca GE, Dubé MA, Penlidis A. A Critical Overview of Sensors for Monitoring Polymerizations. MACROMOL REACT ENG 2009. [DOI: 10.1002/mren.200900024] [Citation(s) in RCA: 59] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Qi G, Nolan M, Schork FJ, Jones CW. Emulsion and controlled miniemulsion polymerization of the renewable monomer γ-methyl-α-methylene-γ-butyrolactone. ACTA ACUST UNITED AC 2008. [DOI: 10.1002/pola.22909] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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22
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Abdollahi M, Mahdavian AR, Nouri A. Kinetic Study of Radical Polymerization VIII. A Comprehensive Study of Solution Copolymerization of Vinyl Acetate and Methyl Acrylate by1H‐NMR Spectroscopy. JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY 2007. [DOI: 10.1080/10601320701407847] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Abdollahi M. Effect of Carboxylic Acid Monomer Type on Particle Nucleation and Growth in Emulsifier-free Emulsion Copolymerization of Styrene-Carboxylic Acid Monomer. Polym J 2007. [DOI: 10.1295/polymj.pj2006246] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Abdollahi M, Sharifpour M. A new simple procedure to calculate monomer reactivity ratios by using on-line 1H NMR kinetic experiments: Copolymerization system with greater difference between the monomer reactivity ratios. POLYMER 2007. [DOI: 10.1016/j.polymer.2006.11.010] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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25
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Reza Mahdavian A, Abdollahi M. Kinetic study of radical polymerization. VII. Investigation into the solution copolymerization of acrylonitrile and itaconic acid by real-time1H NMR spectroscopy. J Appl Polym Sci 2006. [DOI: 10.1002/app.25212] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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