hydrogen bonded multilayers of thermoresponsive polymers
Temperature-responsive nanogel multilayers of poly(N
Temperature-responsive nanogel multilayers of poly(N-vinylcaprolactam) for topical drug delivery n multilayer hydrogels where n denotes the number of nanoparticle layers are produced by layer-by-layer hydrogen-bonded assembly of core-shell PVCL-co-acrylic acid nanoparticles with linear PVPON followed by cross Polymers / chemistry
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The neutral polymers used for hydrogen bonding with TA were poly (N-vinylcaprolactam) (PVCL) poly (N-vinylpyrrolidone) (PVPON) poly (ethylene oxide) (PEO) or poly (N-isopropylacrylamide)
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Interlayer hydrogen bonding produces stable multilayers up to the point where altered pH or other environmental stimulus introduces an unacceptably large electrical charge within them.
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Jan 22 2010 · Nagase K. et al. Effects of graft densities and chain lengths on separation of bioactive compounds by nanolayered thermoresponsive polymer brush surfaces. Langmuir 24
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Chunying Wang Yunhui Li Yuqin Ma Ying Gao Dewen Dong Jianyong Fang Ning Zhang Thermoresponsive polymeric nanoparticles based on poly(2‐oxazoline)s and tannic acid Journal of Polymer Science Part A Polymer Chemistry 10.1002/pola.29033 56 14 () (2018).
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In PNIPAAm as the temperature of polymer solution approaches to transition point the hydrogen bonds formed between N–H or C═O groups of the polymer and water around the polymer chain (Qiu Park 2001) breaks thus collapsing the polymer molecule and forming a hydrophobic globule (Markvicheva et al. 1991).
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Thermoresponsive hydrogel actuators have attracted tremendous interest due to their promising applications in artificial muscles soft robotics and flexible electronics. However most of these materials are based on polymers with lower critical solution temperature (LCST) while those from upper cr
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Engineered hydrogen-bonded polymer multilayers from assembly to biomedical applications. Georgina K. Such Angus P. R. Johnston and Frank Caruso Centre for Nanoscience and Nanotechnology Department of Chemical and Biomolecular Engineering The University of Melbourne Parkville Victoria 3010 Australia.
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Feb 22 2020 · the intermolecular hydrogen bonds between water molecules and polymer chains. Figure 3 indicates that the LCST of P1 is higher compared to P3. Similar results were also obtained for P9 and P11. It is expected that the incorporation of more hydrophobic comonomers or cross-linker will decrease the Adv. Funct. Mater.2020 30
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Apr 01 2015 · Thermoresponsive polymers are a class of "smart" materials that have the ability to respond to a change in temperature a property that makes them useful materials in a wide range of applications and consequently attracts much scientific interest. Temperature-induced swelling and small molecule release with hydrogen-bonded multilayers
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Feb 22 2020 · the intermolecular hydrogen bonds between water molecules and polymer chains. Figure 3 indicates that the LCST of P1 is higher compared to P3. Similar results were also obtained for P9 and P11. It is expected that the incorporation of more hydrophobic comonomers or cross-linker will decrease the Adv. Funct. Mater.2020 30
Get PriceHydrogen-Bonded Multilayers of a Neutral Polymer and a
The neutral polymers used for hydrogen bonding with TA were poly (N-vinylcaprolactam) (PVCL) poly (N-vinylpyrrolidone) (PVPON) poly (ethylene oxide) (PEO) or poly (N-isopropylacrylamide)
Get PriceThermoresponsive polymers and their biomedical application
Thermoresponsive polymers hold great potential in the biomedical field since they enable the fabrication of cell sheets in situ drug delivery and 3D-printing under physiological conditions. In this review we provide an overview of several thermoresponsive polymers and their application with focus on poly(N-isopropylacrylamide)-surfaces for cell sheet engineering.
Get PriceStabilization of Hydrogen-Bonded Poly( N
Jun 14 2005 · In conclusion multilayers were prepared using the common thermoresponsive polymer PNiPAAm and the dual H-bonding/electrostatic polymer PSSMA. The buildup of these films was shown to be sensitive to the pH of adsorption and the
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Within UCST polymers there are two main categories poly-mers that have a UCST due to hydrogen bonding (HB) and ones with UCST that is based on Coulomb interactions.3 4 The HB UCST polymers are polymers with repeating units that are able to form strong hydrogen bonds with other repeating units of the polymer.3 When such polymers are heated
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Apr 24 2020 · The traditional thermoresponsive SMHs usually contain hydrophobic interactions 28 29 hydrogen bonding and electrostatic interactions being the shape‐memory effect established on reversible formation and deconstruction of the above mentioned physical interactions upon exposure to
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35 C exhibits no hysteresis due to a lack of hydrogen bond donors 51–53 . The cloud point temperature Tcp is possibly the most important parameter for thermoresponsive polymers. Thermoresponsive polymers in the aqueous solution with a suitable Tcp can be achieved by designing new monomers 54–56 by copolymerization of monomers with di
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Engineered hydrogen-bonded polymer multilayers from assembly to biomedical applications Chem Soc Rev. 2011 Jan40(1) 19-29. doi 10.1039/c0cs00001a. Epub 2010 Sep 30. Authors Georgina K Such 1 Angus P R Johnston Frank Caruso. Affiliation 1 Centre for
Get PriceEngineered hydrogen-bonded polymer multilayers from
Engineered hydrogen-bonded polymer multilayers from assembly to biomedical applications. Such GK(1) Johnston AP Caruso F. Author information (1)Centre for Nanoscience and Nanotechnology Department of Chemical and Biomolecular Engineering The
Get PriceThermoresponsive polymers and their biomedical application
Thermoresponsive polymers hold great potential in the biomedical field since they enable the fabrication of cell sheets in situ drug delivery and 3D-printing under physiological conditions. In this review we provide an overview of several thermoresponsive polymers and their application with focus on poly(N-isopropylacrylamide)-surfaces for cell sheet engineering.
Get PriceHydrogen‐Bonded Multilayers of Tannic Acid as Mediators of
Through the use of hollow microparticles (capsules) composed of hydrogen‐bonded multilayers of natural polyphenol (tannic acid) with poly (N ‐vinylpyrrolidone) (TA/PVPON) and with poly (N ‐vinylcaprolactam) (TA/PVCL) proinflammatory reactive oxygen and nitrogen species are efficiently dissipated and the production of interferon (IFN)‐ γ and tumor necrosis factor (TNF)‐ α proinflammatory cytokines is
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Hydrogen-Bonded Multilayers of a Neutral Polymer and a Polyphenol Erel-Unal Irem Sukhishvili Svetlana A. Abstract. Publication Macromolecules. Pub Date June 2008 DOI 10.1021/ma800186q Bibcode 2008MaMol..41.3962E full text sources. Publisher
Get PriceEngineered hydrogen-bonded polymer multilayers from
Engineered hydrogen-bonded polymer multilayers from assembly to biomedical applications. Such GK(1) Johnston AP Caruso F. Author information (1)Centre for Nanoscience and Nanotechnology Department of Chemical and Biomolecular Engineering The
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Apr 30 2012 · Veronika Kozlovskaya Eugenia Kharlampieva Self-Assemblies of Thermoresponsive Poly( N -vinylcaprolactam) Polymers for Applications in Biomedical Field ACS Applied Polymer Materials 10.1021/acsapm.9b00863 (2019).
Get PriceThermoresponsive behavior of poly trialkyl-(4-vinylbenzyl
Within UCST polymers there are two main categories poly-mers that have a UCST due to hydrogen bonding (HB) and ones with UCST that is based on Coulomb interactions.3 4 The HB UCST polymers are polymers with repeating units that are able to form strong hydrogen bonds with other repeating units of the polymer.3 When such polymers are heated
Get PriceHydrogen-Bonded Multilayers of a Neutral Polymer and a
The neutral polymers used for hydrogen bonding with TA were poly (N -vinylcaprolactam) (PVCL) poly (N -vinylpyrrolidone) (PVPON) poly (ethylene oxide) (PEO) or poly (N -isopropylacrylamide) (PNIPAM) and the polymer used to explore electrostatic binding with TA was 90 quaternized poly (4-vinylpyridine) (Q90).
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