UV assisted stabilization routes for carbon fiber precursors produced from melt-processible polyacrylonitrile terpolymer

Amit K. Naskar; Robert A. Walker; Sarah Proulx; Dan D. Edie; Amod A. Ogale

doi:10.1016/j.carbon.2004.11.047

UV assisted stabilization routes for carbon fiber precursors produced from melt-processible polyacrylonitrile terpolymer

Amit K. Naskar, Robert A. Walker, Sarah Proulx, Dan D. Edie, Amod A. Ogale

Research output: Contribution to journal › Article › peer-review

68 Scopus citations

Abstract

A low-cost route for producing PAN-based carbon fibers is being developed. The approach involves forming polyacrylonitrile terpolymers that can be melt-spun into fibers. The fibers are then stabilized and carbonized to yield carbon fibers. Melt-processibility, however, precludes direct thermal stabilization of these polymeric fibers. Therefore, a precursor terpolymer containing acryloyl benzophenone (ABP) is used. The UV sensitivity of ABP moiety enhances the UV crosslinkability of the precursor fibers. After a brief exposure to UV radiation, the melt-spun terpolymer fibers can be oxidatively stabilized at 320 °C without melting and subsequently carbonized. UV-visible and ATR-IR spectroscopic analyses suggest that UV radiation induces the formation of free radicals which, in turn, cyclize the PAN. Cyclized PAN was characterized by a strong absorbance in UV-visible region (300-500 nm) due to conjugated >C=C< and >CN- bonds which were also detected by infrared spectroscopy.

Original language	English
Pages (from-to)	1065-1072
Number of pages	8
Journal	Carbon
Volume	43
Issue number	5
DOIs	https://doi.org/10.1016/j.carbon.2004.11.047
State	Published - 2005
Externally published	Yes

Funding

The authors gratefully acknowledge Mr. Dave Warren, DOE program monitor, and the financial support from the Department of Energy through contract no. 4500011036. We also thank Profs. Don Baird and Jim McGrath, Virginia Tech for providing the precursor polymers and Kim Ivey, Clemson University for assistance with diamond ATR spectroscopy.

Funders	Funder number
U.S. Department of Energy	4500011036

Keywords

Carbon fibers
Infrared spectroscopy
Stabilization

Access to Document

10.1016/j.carbon.2004.11.047

Cite this

@article{a9d25b4ec2634a07ae76e929449aff7c,

title = "UV assisted stabilization routes for carbon fiber precursors produced from melt-processible polyacrylonitrile terpolymer",

abstract = "A low-cost route for producing PAN-based carbon fibers is being developed. The approach involves forming polyacrylonitrile terpolymers that can be melt-spun into fibers. The fibers are then stabilized and carbonized to yield carbon fibers. Melt-processibility, however, precludes direct thermal stabilization of these polymeric fibers. Therefore, a precursor terpolymer containing acryloyl benzophenone (ABP) is used. The UV sensitivity of ABP moiety enhances the UV crosslinkability of the precursor fibers. After a brief exposure to UV radiation, the melt-spun terpolymer fibers can be oxidatively stabilized at 320 °C without melting and subsequently carbonized. UV-visible and ATR-IR spectroscopic analyses suggest that UV radiation induces the formation of free radicals which, in turn, cyclize the PAN. Cyclized PAN was characterized by a strong absorbance in UV-visible region (300-500 nm) due to conjugated >C=C< and >CN- bonds which were also detected by infrared spectroscopy.",

keywords = "Carbon fibers, Infrared spectroscopy, Stabilization",

author = "Naskar, {Amit K.} and Walker, {Robert A.} and Sarah Proulx and Edie, {Dan D.} and Ogale, {Amod A.}",

year = "2005",

doi = "10.1016/j.carbon.2004.11.047",

language = "English",

volume = "43",

pages = "1065--1072",

journal = "Carbon",

issn = "0008-6223",

publisher = "Elsevier",

number = "5",

}

TY - JOUR

T1 - UV assisted stabilization routes for carbon fiber precursors produced from melt-processible polyacrylonitrile terpolymer

AU - Naskar, Amit K.

AU - Walker, Robert A.

AU - Proulx, Sarah

AU - Edie, Dan D.

AU - Ogale, Amod A.

PY - 2005

Y1 - 2005

N2 - A low-cost route for producing PAN-based carbon fibers is being developed. The approach involves forming polyacrylonitrile terpolymers that can be melt-spun into fibers. The fibers are then stabilized and carbonized to yield carbon fibers. Melt-processibility, however, precludes direct thermal stabilization of these polymeric fibers. Therefore, a precursor terpolymer containing acryloyl benzophenone (ABP) is used. The UV sensitivity of ABP moiety enhances the UV crosslinkability of the precursor fibers. After a brief exposure to UV radiation, the melt-spun terpolymer fibers can be oxidatively stabilized at 320 °C without melting and subsequently carbonized. UV-visible and ATR-IR spectroscopic analyses suggest that UV radiation induces the formation of free radicals which, in turn, cyclize the PAN. Cyclized PAN was characterized by a strong absorbance in UV-visible region (300-500 nm) due to conjugated >C=C< and >CN- bonds which were also detected by infrared spectroscopy.

AB - A low-cost route for producing PAN-based carbon fibers is being developed. The approach involves forming polyacrylonitrile terpolymers that can be melt-spun into fibers. The fibers are then stabilized and carbonized to yield carbon fibers. Melt-processibility, however, precludes direct thermal stabilization of these polymeric fibers. Therefore, a precursor terpolymer containing acryloyl benzophenone (ABP) is used. The UV sensitivity of ABP moiety enhances the UV crosslinkability of the precursor fibers. After a brief exposure to UV radiation, the melt-spun terpolymer fibers can be oxidatively stabilized at 320 °C without melting and subsequently carbonized. UV-visible and ATR-IR spectroscopic analyses suggest that UV radiation induces the formation of free radicals which, in turn, cyclize the PAN. Cyclized PAN was characterized by a strong absorbance in UV-visible region (300-500 nm) due to conjugated >C=C< and >CN- bonds which were also detected by infrared spectroscopy.

KW - Carbon fibers

KW - Infrared spectroscopy

KW - Stabilization

UR - http://www.scopus.com/inward/record.url?scp=13944256668&partnerID=8YFLogxK

U2 - 10.1016/j.carbon.2004.11.047

DO - 10.1016/j.carbon.2004.11.047

M3 - Article

AN - SCOPUS:13944256668

SN - 0008-6223

VL - 43

SP - 1065

EP - 1072

JO - Carbon

JF - Carbon

IS - 5

ER -

UV assisted stabilization routes for carbon fiber precursors produced from melt-processible polyacrylonitrile terpolymer

Abstract

Funding

Keywords

Access to Document

Other files and links

Fingerprint

Cite this