NDLI: Characterization of the spatial immobilization manner of poly(ethylene glycol) to a titanium surface with immersion and electrodeposition and its effects on platelet adhesion.

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Characterization of the spatial immobilization manner of poly(ethylene glycol) to a titanium surface with immersion and electrodeposition and its effects on platelet adhesion.

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Tanaka, Yuta Matsuo, Yuh Komiya, Takayuki Tsutsumi, Yusuke Doi, Hisashi Yoneyama, Takayuki Hanawa, Takao
Description	Country affiliation: Japan Author Affiliation: Tanaka Y ( Department of Metals, Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University, Tokyo 101-0062, Japan.)
Abstract	Both terminals of a poly(ethylene glycol) (PEG) molecule were terminated with amines. The PEG was electrodeposited onto titanium (Ti) to give it the biofunctions such as blood compatibility. The effects of the amine of PEG terminals and the pH at PEG solution on the adsorption amount of PEG molecules and the thickness of PEG layer immobilized on the Ti surface were evaluated using quartz crystal microbalance technique and X-ray photoelectron spectroscopy. The interfacial reactivity between PEG terminals and the Ti surface was the largest at pH 11, according to the interaction between the charge of terminal amines of PEG and the point of zero charge of Ti oxide. The orientations of PEG molecules immobilized on the Ti surface with immersion or electrodeposition at pH 11 were determined by Fourier transform infrared reflection absorption spectroscopy. Consequently, the terminal amines of PEG were oriented perpendicularly to the surface in electrodeposition rather than in immersion. The charged PEG randomly immobilized on the Ti surface with immersion led to platelet aggregation, whereas U-shaped PEG molecule immobilized with electrodeposition inhibited platelet adhesion and aggregation. The immobilization manners of PEG on the Ti surface were strongly associated with a biofunction such as platelet adhesion.
File Format	HTM / HTML
ISSN	15493296
Issue Number	1
Volume Number	92
e-ISSN	15524965
Journal	Journal of Biomedical Materials Research Part A
Language	English
Publisher	Wiley
Publisher Date	2010-01-01
Publisher Place	United States
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Platelet Adhesiveness Photoelectron Spectroscopy Powders Vibration Polyethylene Glycols Humans Blood Platelets Pharmacology Electroplating Spectroscopy, Fourier Transform Infrared Static Electricity Drug Effects Journal Article Discipline Biomedical Engineering Adsorption Time Factors Ultrastructure Surface Properties Titanium Hydrogen-ion Concentration
Content Type	Text
Resource Type	Article
Subject	Ceramics and Composites Metals and Alloys Biomaterials Biomedical Engineering

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