Preparation and Antifouling Property of Polyurethane Film Modified by PHMG and HA Using Layer-by-Layer Assembly

To reduce the possibility of bacterial infection and implant-related complications, surface modification on polyurethane (PU) film is an ideal solution to endow hydrophobic PU with antibacterial and antifouling properties. In this work, a variety of polyhexamethylene guanidine/ hyaluronic acid (PHMG/HA) multilayer films were self-assembled layer-by-layer on PU films using polyanions, carboxyl-activated HA, and polycations PHMG by controlling the concentration of these polyelectrolytes as well as the number of layers self-assembled. Attenuated total reflection Fourier transform infrared spectroscopy (ATR-FTIR) spectra, water contact angle (WCA), and A Atomic force microscope (AFM) of PU and modified PU films were studied. Protein adsorption and bacterial adhesion as well as the cytotoxicity against L929 of the film on selected PU-(PHMG/HA)5/5-5 were estimated. The results showed that PU-(PHMG/HA)5/5-5 had the best hydrophilicity among all the prepared films, possessing the lowest level of protein adsorption. Meanwhile, this film showed efficient broad-spectrum antibacterial performance as well as significant resistance of bacterial adhesion of more than a 99.9% drop for the selected bacteria. Moreover, almost no influence on cell viability of L929 enhanced the biocompatibility of film. Therefore, the modified PU films with admirable protein absorption resistance, antimicrobial performance, and biocompatibility would have promising applications in biomedical aspect.

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ATTENUATED TOTAL REFLECTION AND EMISSION PROPERTIES OF SELF-ASSEMBLED LAYER-BY-LAYER FILMS CONTAINING AZOBENZENE DYE

Molecular Crystals and Liquid Crystals ◽

10.1080/744819019 ◽

2003 ◽

Vol 407 (1) ◽

pp. 105-113

Author(s):

Keizo Kato ◽

Junichi Kawashima ◽

Kazunari Shinbo ◽

Futao Kaneko ◽

Keizo Kato ◽

...

Keyword(s):

Total Reflection ◽

Attenuated Total Reflection ◽

Layer By Layer ◽

Emission Properties ◽

Self Assembled ◽

Self Assembled Layer

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Electrochemical impedance study of self-assembled layer-by-layer iron–silicotungstate/poly(ethylenimine) modified electrodes

Electrochimica Acta ◽

10.1016/j.electacta.2011.01.046 ◽

2011 ◽

Vol 56 (23) ◽

pp. 7940-7945 ◽

Cited By ~ 28

Author(s):

Diana M. Fernandes ◽

Mariana E. Ghica ◽

Ana M.V. Cavaleiro ◽

Christopher M.A. Brett

Keyword(s):

Electrochemical Impedance ◽

Modified Electrodes ◽

Layer By Layer ◽

Impedance Study ◽

Self Assembled ◽

Self Assembled Layer ◽

Layer Iron

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Enhanced reverse saturable absorption of electrostatic self-assembled layer by layer films containing (8-quinolineoxy-5-sulfonic acid)phthalocyanine cobalt and graphene oxide

RSC Advances ◽

10.1039/c5ra04988a ◽

2015 ◽

Vol 5 (68) ◽

pp. 55150-55157 ◽

Cited By ~ 7

Author(s):

Bowen Chen ◽

Chunying He ◽

Weina Song ◽

Cheng Zhao ◽

Yachen Gao ◽

...

Keyword(s):

Graphene Oxide ◽

Sulfonic Acid ◽

Saturable Absorption ◽

Reverse Saturable Absorption ◽

Layer By Layer ◽

Input Intensity ◽

Self Assembled ◽

Self Assembled Layer

The 25-bilayer CoPc/GO film was fabricated through electrostatic self-assembled layer by layer (LBL) technique, and it exhibits strong reverse saturable absorption (RSA) effect with the input intensity of 1.16 μJ.

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Preparation and characterization of self-assembled layer by layer NiCo2O4–reduced graphene oxide nanocomposite with improved electrocatalytic properties

Journal of Alloys and Compounds ◽

10.1016/j.jallcom.2013.12.111 ◽

2014 ◽

Vol 590 ◽

pp. 266-276 ◽

Cited By ~ 72

Author(s):

Manish Srivastava ◽

Md. Elias Uddin ◽

Jay Singh ◽

Nam Hoon Kim ◽

Joong Hee Lee

Keyword(s):

Graphene Oxide ◽

Reduced Graphene Oxide ◽

Layer By Layer ◽

Electrocatalytic Properties ◽

Reduced Graphene ◽

Self Assembled ◽

Self Assembled Layer

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Photo-induced in-plane alignment of LC molecules on layer-by-layer self-assembled films containing azo dyes evaluated by attenuated total reflection measurements

Colloids and Surfaces A Physicochemical and Engineering Aspects ◽

10.1016/s0927-7757(01)01020-2 ◽

2002 ◽

Vol 198-200 ◽

pp. 917-922 ◽

Cited By ~ 8

Author(s):

Jun Ishikawa ◽

Akira Baba ◽

Futao Kaneko ◽

Kazunari Shinbo ◽

Keizo Kato ◽

...

Keyword(s):

Azo Dyes ◽

Total Reflection ◽

Attenuated Total Reflection ◽

Layer By Layer ◽

Self Assembled

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Studies on Self-Assembly of Methoxy Polyethylene Oxide Propyl Trimethoxysilane on Silicon Substrate

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.557-559.1916 ◽

2012 ◽

Vol 557-559 ◽

pp. 1916-1920

Author(s):

Wen Shi Ma ◽

Fang Yang ◽

Bang Jun Deng ◽

Hai Yan Sun ◽

Xiao Dan Lin

Keyword(s):

Contact Angle ◽

Water Contact Angle ◽

Polyethylene Oxide ◽

Silicon Substrate ◽

Average Length ◽

Average Molecular Weight ◽

The Self ◽

Water Contact ◽

Self Assembled ◽

Self Assembled Layer

A novel hydrophilic and self-assemble functional methoxy polyethylene oxide propyl trimethoxysilane was synthesized by hydrosilylation reaction using methoxy polyethylene oxide monoallyl ether and trimethoxysilane. The self-assembled layer of methoxy polyethylene oxide propyl trimethoxysilane was prepared by immersing hydroxylate silicon substrate in silane solution. The structure, morphology and hydrophilicity of self-assembled layer were characterized by means of X-ray photoelectron spectroscopy (XPS), atomic force microscopy (AFM), and water contact angle method. The results show that methoxy polyethylene oxide propyl trimethoxysilane can self-assemble on the surface of hydroxylate silicon substrate. At concentration of 0.80 g/100 mL and the self-assembling time of 60 minutes, the self-assembled layer of methoxy polyethylene oxide propyl trimethoxysilane of average molecular weight of 682 shows a brush-like structure with each brush column size of 10~15 nm in diameter and 5~8 nm in height. The correspondence of the columns height with the average length of the silane molecules suggests that the layer obtained is monolayer and the brush columns are constituted by extended PEO molecular chain units in the silane. The distribution of columns is uniform and the root-mean-square（RMS） roughness of self-assembled monolayer is 0.98 nm. Water contact angle of the monolayer is 7.4°. A super-hydrophilic surface is obtained.

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Surface Modification by Grafting with Biocompatible 2-Methacryloyloxyethyl Phosphorylcholine for Microfluidic Devices

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.342-343.789 ◽

2007 ◽

Vol 342-343 ◽

pp. 789-792 ◽

Cited By ~ 3

Author(s):

James Sibarani ◽

Tomohiro Konno ◽

Madoka Takai ◽

Kazuhiko Ishihara

Keyword(s):

Protein Adsorption ◽

Photoelectron Spectroscopy ◽

Microfluidic Devices ◽

Polymer Chains ◽

Water Contact ◽

Atomic Force ◽

Modified Surfaces ◽

Base Polymer ◽

Phosphate Buffered Saline ◽

Polymerization Method

Non-biofouling surfaces with polymer-based substrate were prepared for manufacturing microfluidic devices. It was done by constructing biocompatible poly(2-methacryloyloxyethyl phosphorylcholine(MPC)) brushes using surface-initiated graft polymerization method based on dithiocarbamate as photoiniferter. The density and length of the polymer chains were varied by changing the composition of the photoiniferter moiety in the base polymer (macrophotoiniferter) and the photoirradiation time, respectively. The molecular weight and thickness of the poly(MPC)- grafted chains were 320 kDa and 95±14 nm, respectively. Characterizations of the poly(MPC) modified surfaces were conducted by water contact angle, X-ray photoelectron spectroscopy, atomic force microscope. Protein adsorption resistance of these modified surfaces was then investigated by contacting with human plasma protein dissolved in phosphate buffered saline. These poly(MPC)-modified surfaces effectively reduced protein adsorption.

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