Chemically modified carbon fibres i. n. ermolenko, i. p. lyubliner and n. v. gulko, vch verlagsgesellschaft, weinheim, 1990. pp. vii + 304, price dm 184.00. isbn 3-527-26927-4

2007 ◽  
Vol 23 (4) ◽  
pp. 362-363
Author(s):  
W. W. Wright
Keyword(s):  
Carbon Fibres ◽  
Chemically Modified

Investigation of an Elastomer Composite with Modified Carbon Fibres

2016 ◽  
Vol 43 (12) ◽  
pp. 9-12
Author(s):  
O.E. Maskalyunaite ◽  
S.Yu. Zabolotskikh ◽  
V.V. Nekrasova ◽  
P.N. Grakovich ◽  
L.F. Ivanov ◽  
...  
Keyword(s):  
Wear Resistance ◽  
Plasma Modification ◽  
Carbon Fibres ◽  
Organofluorine Compounds ◽  
Chemically Modified ◽  
Compression Set ◽  
Main Fraction ◽  
Different Types ◽  
Elastomer Composites ◽  
Positive Results

The possibility of using ‘Belum’ chemically modified hydroxycellulose carbon fibres (CFs) to improve the wear resistance of elastomer composites was studied. Comminuted Belum fibres with a length of the main fraction of 50–100 μm were used. Chemical modification of the CFs was carried out in electric discharge plasma in a medium of organofluorine compounds, as a result of which prepolymer coatings were formed with a thickness of several tens of nanometres, similar in chemical composition to polyetrafluoroethylene. The microstructure of the modified CFs was investigated by electron microscopy. It was shown that the introduction of modified Belum-grade CFs leads to an increase in the wear resistance of elastomer composites based on SKF-26 fluorine-containing rubber. It was also shown that there is an improvement in the ageing resistance, measured from the change in 20% compression set at temperatures of 100, 125, 150, and 200°C. Comparative bench tests revealed considerable advantages of different types of moving seal manufactured using modified Belum CFs. Service tests of articles manufactured from rubbers of the experimental composition also showed positive results. The mechanism of the influence of plasma modification is discussed.

Spectroscopic analysis of chemically modified carbon fibres

2021 ◽  
Author(s):  
Álvaro Gustavo de Oliveira Moraes ◽  
Micheli de Souza Haack ◽  
Mirabel Cerqueira Rezende ◽  
Sandro Campos Amico
Keyword(s):  
Spectroscopic Analysis ◽  
Carbon Fibres ◽  
Chemically Modified

Carbon fibres, manufacture, use and economy

1984 ◽  
Vol 81 ◽  
pp. 711-716 ◽  
Author(s):  
M. Tatsuhana ◽  
M. Hirata ◽  
J. Matsui
Keyword(s):  
Carbon Fibres

Histology of Coated Carbon Fibres Implanted in the Canine Patellar Ligament

1989 ◽  
Vol 02 (02) ◽  
pp. 59-66 ◽  
Author(s):  
G. J. Miller ◽  
Maron Calderwood Mays ◽  
L. Tilmant ◽  
P. A. Indelicato ◽  
M. S. Bloomberg
Keyword(s):  
Patellar Ligament ◽  
Carbon Fibres ◽  
Coated Carbon

Binding of Tissue Plasminogen Activator to Vascular Grafts

1989 ◽  
Vol 61 (01) ◽  
pp. 131-136 ◽  
Author(s):  
Richard A Harvey ◽  
Hugh C Kim ◽  
Jonathan Pincus ◽  
Stanley Z Trooskin ◽  
Josiah N Wilcox ◽  
...  
Keyword(s):  
Plasminogen Activator ◽  
Tissue Plasminogen Activator ◽  
Fibrinolytic Activity ◽  
Polymer Surface ◽  
Enzymic Activity ◽  
Vascular Prostheses ◽  
Chemically Modified ◽  
Insoluble Surfactant ◽  
Tissue Plasminogen

SummaryTissue plasminogen activator labeled with radioactive iodine (125I-tPA) was immobilized on vascular prostheses chemically modified with a thin coating of water-insoluble surfactant, tridodecylmethylammonium chloride (TDM AC). Surfactant- treated Dacron, polytetrafluoroethylene (PTFE), silastic, polyethylene and polyurethane bound appreciable amounts of 125I- tPA (5-30 μg 125I-tPA/cm2). Upon exposure to human plasma, the amount of 125I-tPA bound to the surface shows an initial drop during the first hour of incubation, followed by a slower, roughly exponential release with a t½ of appoximately 75 hours. Prostheses containing bound tPA show fibrinolytic activity as measured both by lysis of clots formed in vitro, and by hydrolysis of a synthetic polypeptide substrate. Prior to incubation in plasma, tPA bound to a polymer surface has an enzymic activity similar, if not identical to that of the native enzyme in buffered solution. However, exposure to plasma causes a decrease in the fibrinolytic activity of both bound tPA and enzyme released from the surface of the polymer. These data demonstrate that surfactant-treated prostheses can bind tPA, and that these chemically modified devices can act as a slow-release drug delivery system with the potential for reducing prosthesis-induced thromboembolism.

The Mechanical Performance of Carbon Fibres- Addressing the Role of Microstructure

2019 ◽  
Author(s):  
Peter Peter ◽  
Claudia Creighton ◽  
David Fox ◽  
Pablo Mota Santiago ◽  
Adrian Hawley ◽  
...  
Keyword(s):  
Mechanical Performance ◽  
Carbon Fibres
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