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Title
Synthesis and properties of glycidyl methacrylate grafted Eucalyptus fiber
Authors
G. YANG and H. M. ZHAI
Received
November 21, 2011
Published
Volume 46, Issue 3-4 March-April
Keywords
glycidyl methacrylate, oil absorptivity, contact angle, grafted eucalyptus fiber
Abstract
To promote the value-added utilization of natural, renewable and sustainable eucalyptus fibers, a glycidyl-methacrylate- grafted fiber (GMAGF) was synthesized by grafting glycidyl methacrylate (GMA) onto bleached eucalyptus fiber induced by a Fe2+-HO -thiourea dioxide (TD) redox system, via cross-linking reaction of diallyl phthalate (DAP), 2 2 followed by Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD) and scanning electron microscopy (SEM) characterization. The effects of the dosage and concentration of DAP, HO and TD and of the 2 2 temperature of the reaction system on the grafting percentage (G%) and oil absorptivity (OAP) of GMAGF were studied. The main results obtained are as follows: (1) G% increased as the monomer dosage increased to a given content; (2) GMAGF crystallinity considerably decreased, compared to that of the original fiber; (3) GMAGF, carrying glycidyl groups and improving its non-polarity, is able to adsorb hydrophobic substance molecules like diesel; OAP rose with the increase of grafting percentage; a maximum OAP (17.6 g/g) improvement, by 320%, compared to the original fiber, was obtained when G% ranged from 85 to 90%, at a DAP dosage of 5.0%; (4) OAP was closely related to both G% and the cross-linked network formed between copolymers.
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