Highly improved interfacial affinity in carbon fiber-reinforced polymer composites via oxygen and nitrogen plasma-assisted mechanochemistry

Title
Highly improved interfacial affinity in carbon fiber-reinforced polymer composites via oxygen and nitrogen plasma-assisted mechanochemistry
Authors
이상수박종혁김태안유지완김민성이영모방준하
Keywords
Plasma-assisted mechanochemistry; Carbon fiber-reinforced polymer composites; Interfacial affinity; Mechanochemical reaction; Covalent bonds
Issue Date
2019-05
Publisher
Composites. Part B, Engineering
Citation
VOL 165-732
Abstract
Compounding polymers with carbon fibers (CFs) is a highly effective means of producing polymer composites with enhanced mechanical properties. However, in most conventional carbon fiber-reinforced polymer (CFRP) composites, mechanical improvements are limited by low interfacial affinity between the polymer and the CFs. The plasma-assisted mechanochemistry (PMC) process described herein resulted in covalent bonds between the polymer matrix and CFs, greatly increasing the interfacial affinity between the two materials and allowing the efficient transfer of stress from the polymer to the CFs. Polyketone (PK) and CFs were compounded via PMC processing under O2, N2, and Ar plasmas, and carbon nanotubes (CNTs) were introduced at the PK/CF interface. The resulting PK/CNT/CF composites exhibited significantly improved mechanical properties, especially when treated with O2 and N2 plasmas. The tensile strength and Young's modulus of O2 plasma-treated composites increased by 20% and 31%, respectively, compared to those of conventional composites. This approach is generally applicable to the development of high-performance CFRP composites.
URI
http://pubs.kist.re.kr/handle/201004/69082
ISSN
1359-8368
Appears in Collections:
KIST Publication > Article
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