Characterization of Water Hyacinth Cellulose-g-poly (Ammonium Acrylate-co-acrylic Acid)/nano-hydroxyapatite Polymer Hydrogel Composite for Potential Agricultural Application
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Date
2020Author
Kiplangat, Rop
Mbui, Damaris
Karuku, George N
Michira, Immaculate
Njagi, Njomo
Type
ArticleLanguage
enMetadata
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Polymer nano-composite was prepared by grafting partially neutralized acrylic acid onto swollen cellulose iso-lated from water hyacinth in the presence of nano-hydroxyapatite (nano-HA) usingN,N-methylene-bis-acrylamide (MBA) as the cross-linker and ammonium persulphate (APS) as the free radical initiator. Water ab-sorption tests showed an increase in swelling ratio of the copolymer with increased nano-HA content to valueof 120 g/g at 2.5%w/vabove which it declined. FTIR spectrum of nano-composite revealed grafting of the mono-mer (acrylic acid/ammonium acrylate) onto cellulose and nano-HA. Transmission electron microscopy (TEM)images of nano-HA synthesized in the presence of Triton X-100 (non-ionic surfactant) displayed rod-shaped ag-glomerates and nano-particle dispersion within the copolymer matrix. Energy dispersive X-ray (EDX) spectra re-vealed the constituents of nano-composite to be mainly C, O, Ca and P, while N was not detected by this method.X-ray diffractograms (XRD) of cellulose grafted copolymer showed a more amorphous structure relative to thatof dry water hyacinth cellulose and also presence of crystalline nano-HA within the copolymer. This polymernano-composite could be beneficial in agriculture in aiding moisture retention as well as a source of P which oc-curs through microbial degradation of cellulose grafted copolymer and solubilization of nano-HA
Citation
Rop K, Mbui D, Karuku GN, Michira I, Njomo N. "Characterization of water hyacinth cellulose-g-poly (ammonium acrylate-co-acrylic acid)/nano-hydroxyapatite polymer hydrogel composite for potential agricultural application." Results in Chemistry. 2020;2:100020.Publisher
University of Nairobi
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Attribution-NonCommercial-NoDerivs 3.0 United StatesUsage Rights
http://creativecommons.org/licenses/by-nc-nd/3.0/us/Collections
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