Synthesis and characterization of activated carbon fibers from Kevlar
Kevlar [poly (p-phenilylene terephtalamide)], was used as a precursor in the preparation of activated carbon fibers. For this intention, physical and chemical activations were carried out. Activated fibers were physically prepared from the carbonization of the Kevlar and its later activation with CO2 and steam of water, by the other hand; the chemically activated fibers were obtained by means of the impregnation of the material with phosphoric acid and their later carbonization. Different conditions were used and preliminary analyses of the precursor were taken into account (TGA-DTA / IR). The resulting fibers were characterized by N2 (77K) adsorption, infrared spectroscopy, SEM, and immersion calorimetry. Yields and Burn off were also evaluated. The results shows that if you want to synthesize activated carbon fibers from Kevlar strong conditions respect to the commonly used such as water steam, high phosphoric acid concentrations and methods of impregnation are the ones who allows the development of optimal surface areas and pore volumes.
Main Authors: | Giraldo,L., Ladino,Y., Pirajánc,J.C M., Rodríguez,M. P. |
---|---|
Format: | Digital revista |
Language: | English |
Published: |
Fundação Editora da Universidade Estadual Paulista Júlio de Mesquita Filho - UNESP
2007
|
Online Access: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-46702007000400008 |
Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
Similar Items
-
Production and Characterization of Activated Carbon Fiber from Textile PAN Fiber
by: Amaral Junior,Miguel Angelo do, et al.
Published: (2017) -
3D printing of a continuous fiber-reinforced composite based on a coaxial Kevlar/PLA filament
by: Trenton Cersoli, et al. -
Failure Theories on Carbon/Kevlar Hybrid Fabric Based Composite Laminate: Notch and Anisotropy Effects
by: Medeiros,Roberto José de, et al.
Published: (2019) -
Design of an adsorbent employing activated carbon fiber to remove lead
by: Cárdenas-López,C., et al.
Published: (2007) -
Activated carbon fibers prepared directly from stabilized fibers for use as electrodes in supercapacitors
by: Díez Nogués, Noel, et al.
Published: (2014-12-01)