New Insight into the Composition and Structure of Sizing Agent from NMR Spectroscopy

Open Access

Year : 2024 | Volume :02 | Issue : 02 | Page : 06-24
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indra Neel Pulidindi,

  1. Scientific Consultant, Scientific Consultancy for Industrial and Academic Research (JSCIAR), Tharamani, Tamil Nadu, India

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Sized carbon fibers (CFs) are of commercial significance as they form the main load-bearing component in advanced materials, namely, carbon fiber-reinforced plastics (CFRPs). Much of the knowledge of sizing composition and the process of sizing is a subject of intellectual property rights owing to its commercial relevance. In this original research article, deeper insights into the structure and composition of the sizing agent used for the surface modification of commercial carbon fibers (NX90, NX100, CFF800, T800HB, T700SC, and M55J) were obtained using 1H, 13C, 29Si, and heteronuclear single quantum coherence (HSQC) NMR spectroscopic analysis. NMR analysis of the sizing compound extracted from the sized carbon fibers revealed that indeed a dimer of diglycidyl ether of bisphenol A, DGEBA, (trade name, E51) is used in the sizing composition for making the fiber compatible with the polymer matrices to increase the interfacial strength via improved chemical bonding.

Keywords: Sizing agent, carbon fibers, carbon fiber reinforced plastics, CFRPs, E51, DGEBA dimer, crown ethers, organic siloxanes, PDMS, HDMS, NX90, NX100, CFF800, T800HB, T700SC, M55J

[This article belongs to International Journal of Photochemistry and Photochemical Research (ijppr)]

How to cite this article:
indra Neel Pulidindi. New Insight into the Composition and Structure of Sizing Agent from NMR Spectroscopy. International Journal of Photochemistry and Photochemical Research. 2024; 02(02):06-24.
How to cite this URL:
indra Neel Pulidindi. New Insight into the Composition and Structure of Sizing Agent from NMR Spectroscopy. International Journal of Photochemistry and Photochemical Research. 2024; 02(02):06-24. Available from: https://journals.stmjournals.com/ijppr/article=2024/view=0


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Regular Issue Open Access Original Research
Volume 02
Issue 02
Received 21/10/2024
Accepted 28/10/2024
Published 26/12/2024
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