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Improving the compatibility, surface strength, and dimensional stability of cellulosic fibers using glycidyl methacrylate grafting
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- Guo, Lifang (author)
- KTH,Fiber- och polymerteknologi,Nanjing Forestry Univ
- Meng, A. (author)
- Wang, L. (author)
- show more...
- Huang, J. (author)
- Wang, X. (author)
- Ren, H. (author)
- Zhai, H. (author)
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- (creator_code:org_t)
- 2020-06-16
- 2020
- English.
- In: Journal of Materials Science. - : Springer. - 0022-2461 .- 1573-4803. ; 55:27, s. 12906-12920
- Journal article (peer-reviewed)
Abstract
Subject headings
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- The graft copolymerization of lignocellulosic fibers with glycidyl methacrylate (GMA) using a Fe2+-thiourea dioxide-H(2)O(2)redox system (Fe2+-TD-H2O2) was studied to overcome the problems of poor compatibility and low surface strength when cellulosic fibers are composited with synthetic polymers. The results show that cellulose-poly(GMA) (CPGMA) was successfully synthesized from GMA and bleachedEucalyptuscellulosic fibers by Fe2+-TD-H(2)O(2)in a mild aqueous solution. CPGMA had high graft rate (244%), high content of epoxy group, and high stability in water. X-ray diffraction patterns and(13)C cross-polarization magic angle spinning nuclear magnetic resonance spectra analyses showed that graft copolymerization did not change the crystalline structure of the CPGMA fiber backbone cellulose, but the crystallinity of the CPGMA fiber decreased with an increase in amorphous PGMA grafting. Scanning electron microscopy confirmed that the grafting reaction occurred both inside and outside the fiber. The specific surface area and pore diameter of the grafted fibers were significantly affected by the grafting. The hydrophobicity of the fibers was significantly enhanced by graft copolymerization. PGMA grafting can enhance the compatibility between the modified fiber and synthetic polymer matrix, improving the processing runnability and product properties of composite materials. A high intensity focused ultrasound method was used to analyze the fiber surface strength. It was confirmed that graft copolymerization significantly improved the surface strength of the grafted fibers. Graft copolymerization can significantly improve the dimensional stability of cellulosic fibers.
Subject headings
- NATURVETENSKAP -- Kemi -- Polymerkemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Polymer Chemistry (hsv//eng)
Keyword
- Acrylic monomers
- Cellulose
- Copolymerization
- Crystallinity
- Dimensional stability
- Fibers
- Magic angle spinning
- Magnetic resonance spectroscopy
- Nanocrystalline materials
- Polymer matrix composites
- Redox reactions
- Scanning electron microscopy
- Spinning (fibers)
- Bleached eucalyptus
- Cross polarization magic-angle spinnings
- Crystalline structure
- Glycidyl methacrylate
- Graft co polymerizations
- High intensity focused ultrasound
- Lignocellulosic fibers
- Stability in waters
- Grafting (chemical)
Publication and Content Type
- ref (subject category)
- art (subject category)
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- Guo, Lifang
- Meng, A.
- Wang, L.
- Huang, J.
- Wang, X.
- Ren, H.
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- Zhai, H.
- Ek, Monica
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- About the subject
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- NATURAL SCIENCES
- NATURAL SCIENCES
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- By the university
- Royal Institute of Technology
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