Ultra high density carbon fiber derived from isotactic polypropylene fiber without skin‐core structure

Polypropylene (PP)‐based carbon fibers were prepared by sulfonation process of isotactic PP fibers with concentrated sulfuric acid, followed by stress‐less carbonization under nitrogen atmosphere. The stabilization behaviors of PP fiber under different sulfonation temperatures and time were discusse...

Full description

Saved in:
Bibliographic Details
Published in:Polymers for advanced technologies 2024-02, Vol.35 (2), p.n/a
Main Authors: Yang, Minghang, Sun, Luzhen, Liu, Qiongxia, Deng, Yu, Liu, Cheng, Li, Nan, Xu, Jian, Chen, Yousi, Jian, Xigao
Format: Article
Language:English
Subjects:
Bulk density
carbon fiber
Carbon fiber reinforced plastics
Carbon fibers
Carbonization
Graphite
isotactic polypropylene fiber
Isotacticity
Low density polyethylenes
Mechanical properties
Polypropylene
sulfonated fiber
Sulfuric acid
Temperature
Tensile strength
Thermal stability
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Polypropylene (PP)‐based carbon fibers were prepared by sulfonation process of isotactic PP fibers with concentrated sulfuric acid, followed by stress‐less carbonization under nitrogen atmosphere. The stabilization behaviors of PP fiber under different sulfonation temperatures and time were discussed. The carbonization behavior of the stabilized PP fibers under different carbonization temperatures, as well as the mechanical performance of the obtained carbon fibers were investigated. The results indicated that linear PP molecule were effectively converted into thermally stable structure at higher temperature (≥130°C) in short time (2 h) through sulfonation‐desulfonation reaction, among which ordered graphite structure has been formed prior to the carbonization process. Meanwhile, the carbon fibers were considerably densified by increasing the sulfonation temperature and carbonization temperature, and a bulk density of 1.96 g/cm3 was achieved. Moreover, the temperature and time of the sulfonation process as well as the temperature of the carbonization process were regulated, and carbon fibers with tensile strength of 262.3 MPa was obtained, which was superior to that of 208.1 MPa for the linear low density polyethylene‐based carbon fibers reported previously. Isotactic PP was proved to be a promising candidate to develop carbon fibers with tunable graphite structure and mechanical performance.
ISSN:1042-7147
1099-1581
DOI:10.1002/pat.6300