NDLI: Preparation of Nano-Sized Particles of Collagen II by an Electrostatic Field System

Content Provider	IEEE Xplore Digital Library
Author	Shyh Ming Kuo Shwu Jen Chang Chia Che Ho Shu Fen Chen Li-ChUn Lin
Copyright Year	2005
Description	Author affiliation: Dept. of Biomed. Eng., I-Shou Univ., Kaohsiung (Shyh Ming Kuo; Shwu Jen Chang; Chia Che Ho; Shu Fen Chen)
Abstract	This study described a novel method for preparing nano-sized particles of collagen II by using a high voltage electrostatic field system. The preliminary results showed that the collagen II particles exhibited good sphericity and the particles diameters increased after longer electric field treatment. They were in the range of 208 plusmn 27, 277 plusmn 26 and 467 plusmn 35 nm in diameter at the treatment of 3 kV/cm for 1, 3, and 5 hours respectively at 25degC (collagen concentration was 0.2 mg/ml). Moreover, the particles size increased to 1621 plusmn 49 nm in diameter when the concentration of collagen II was increased from 0.2 mg/ml to 0.5 mg/ml. However, the collagen II was hard to form a nano-particle shape under 30degC at 0.2 mg/ml and 0.5 mg/ml concentration of collagen II. When the temperature increased to 37degC, the collagen II was unable to produce particle, instead, fibrous structures were formed under this temperature setting. This result probably contributed by a entropy driven process which termed fibrillogenesis, a larger force to yield the collagen molecules to self-assemble and then formed collagen fibrils. Incidentally, smoother outer surface of nano-particle was observed after 5-hour treatment (collagen concentration was 0.2mg/ml at 25degC). The most important finding was that, no collagen II nano-particles were produced without the treatment of electrostatic field, no matter at either collagen concentration or temperature settings
Starting Page	1248
Ending Page	1251
File Size	693025
Page Count	4
File Format	PDF
ISBN	0780387414
DOI	10.1109/IEMBS.2005.1616651
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2006-01-17
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Electrostatics Temperature Self-assembly Entropy Biological materials Particle production Electrodes Biomedical engineering Orthopedic surgery Hospitals electrostatic field system collagen II nano-particles
Content Type	Text
Resource Type	Article

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