Journal
APPLIED SURFACE SCIENCE
Volume 257, Issue 17, Pages 7600-7608Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.apsusc.2011.03.134
Keywords
Photoinduced graft polymerization; UHMWPE fibers; Interfacial bonding property
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Funding
- Shanghai Economics and Information Committee
- Ministry of Finance People's Republic of China
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In this study, a sequential photoinduced graft polymerization process was proposed to improve the poor interfacial bonding property of ultra high molecular weight polyethylene(UHMWPE) fibers. The polymerization was initiated by dormant semipinacol (SP) groups and carried out in a thin liquid layer. Methacrylic acid (MAA) and acryl amide (AM) were grafted stepwise onto the surface of UHMWPE fibers. Attenuated total reflectance infrared spectroscopy (ATR-IR) and thermo gravimetric analysis (TGA) confirmed the grafting. The analysis result of pyrolysis-gas chromatography/mass spectrometry (Py-GC/MS) indicated the structure of grafted chains. Scanning electron microscopy (SEM) images and atomic force microscopy (AFM) images revealed the apparent morphology changing, and the grafted layers were observed. Interfacial shear stress (IFSS) test of the modified fibers showed an extensively improved interfacial bonding property. The active groups grafted onto the fibers would supply enough anchor points for the chemical bonding with various resins or further reactions. (C) 2011 Elsevier B. V. All rights reserved.
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