Characterization of water hyacinth cellulose-g-poly(ammonium acrylate-co-acrylic acid)/nano-hydroxyapatite polymer hydrogel composite for potential agricultural application
Polymer nano-composite was prepared by grafting partially neutralized acrylic acid onto swollen cellulose isolated from water hyacinth in the presence of nano-hydroxyapatite (nano-HA) using N,N-methylene-bis-acrylamide (MBA) as the cross-linker and ammonium persulphate (APS) as the free radical init...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2020-01-01
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| Series: | Results in Chemistry |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2211715619300207 |
| _version_ | 1818323954065997824 |
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| author | Kiplangat Rop Damaris Mbui George N. Karuku Immaculate Michira Njagi Njomo |
| author_facet | Kiplangat Rop Damaris Mbui George N. Karuku Immaculate Michira Njagi Njomo |
| author_sort | Kiplangat Rop |
| collection | DOAJ |
| description | Polymer nano-composite was prepared by grafting partially neutralized acrylic acid onto swollen cellulose isolated from water hyacinth in the presence of nano-hydroxyapatite (nano-HA) using N,N-methylene-bis-acrylamide (MBA) as the cross-linker and ammonium persulphate (APS) as the free radical initiator. Water absorption tests showed an increase in swelling ratio of the copolymer with increased nano-HA content to value of 120 g/g at 2.5% w/v above which it declined. FTIR spectrum of nano-composite revealed grafting of the monomer (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 agglomerates and nano-particle dispersion within the copolymer matrix. Energy dispersive X-ray (EDX) spectra revealed 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 that of dry water hyacinth cellulose and also presence of crystalline nano-HA within the copolymer. This polymer nano-composite could be beneficial in agriculture in aiding moisture retention as well as a source of P which occurs through microbial degradation of cellulose grafted copolymer and solubilization of nano-HA. |
| first_indexed | 2024-12-13T11:20:53Z |
| format | Article |
| id | doaj.art-76ad8830c4834d6b99bdee6bf353db57 |
| institution | Directory Open Access Journal |
| issn | 2211-7156 |
| language | English |
| last_indexed | 2024-12-13T11:20:53Z |
| publishDate | 2020-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Results in Chemistry |
| spelling | doaj.art-76ad8830c4834d6b99bdee6bf353db572022-12-21T23:48:29ZengElsevierResults in Chemistry2211-71562020-01-012100020Characterization of water hyacinth cellulose-g-poly(ammonium acrylate-co-acrylic acid)/nano-hydroxyapatite polymer hydrogel composite for potential agricultural applicationKiplangat Rop0Damaris Mbui1George N. Karuku2Immaculate Michira3Njagi Njomo4Department of Chemistry, University of Nairobi. P.O. Box 30197-00100, Nairobi, Kenya; Corresponding author.Department of Chemistry, University of Nairobi. P.O. Box 30197-00100, Nairobi, KenyaDepartment of Land Resource Management and Agricultural Technology, University of Nairobi, P. O. Box 29053-00625, Kangemi, Nairobi, KenyaDepartment of Chemistry, University of Nairobi. P.O. Box 30197-00100, Nairobi, KenyaDepartment of Chemistry, University of Nairobi. P.O. Box 30197-00100, Nairobi, KenyaPolymer nano-composite was prepared by grafting partially neutralized acrylic acid onto swollen cellulose isolated from water hyacinth in the presence of nano-hydroxyapatite (nano-HA) using N,N-methylene-bis-acrylamide (MBA) as the cross-linker and ammonium persulphate (APS) as the free radical initiator. Water absorption tests showed an increase in swelling ratio of the copolymer with increased nano-HA content to value of 120 g/g at 2.5% w/v above which it declined. FTIR spectrum of nano-composite revealed grafting of the monomer (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 agglomerates and nano-particle dispersion within the copolymer matrix. Energy dispersive X-ray (EDX) spectra revealed 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 that of dry water hyacinth cellulose and also presence of crystalline nano-HA within the copolymer. This polymer nano-composite could be beneficial in agriculture in aiding moisture retention as well as a source of P which occurs through microbial degradation of cellulose grafted copolymer and solubilization of nano-HA.http://www.sciencedirect.com/science/article/pii/S2211715619300207PolymerNano-compositeNano-hydroxyapatiteSwollen celluloseWater hyacinthMoisture retention |
| spellingShingle | Kiplangat Rop Damaris Mbui George N. Karuku Immaculate Michira Njagi Njomo Characterization of water hyacinth cellulose-g-poly(ammonium acrylate-co-acrylic acid)/nano-hydroxyapatite polymer hydrogel composite for potential agricultural application Results in Chemistry Polymer Nano-composite Nano-hydroxyapatite Swollen cellulose Water hyacinth Moisture retention |
| title | Characterization of water hyacinth cellulose-g-poly(ammonium acrylate-co-acrylic acid)/nano-hydroxyapatite polymer hydrogel composite for potential agricultural application |
| title_full | Characterization of water hyacinth cellulose-g-poly(ammonium acrylate-co-acrylic acid)/nano-hydroxyapatite polymer hydrogel composite for potential agricultural application |
| title_fullStr | Characterization of water hyacinth cellulose-g-poly(ammonium acrylate-co-acrylic acid)/nano-hydroxyapatite polymer hydrogel composite for potential agricultural application |
| title_full_unstemmed | Characterization of water hyacinth cellulose-g-poly(ammonium acrylate-co-acrylic acid)/nano-hydroxyapatite polymer hydrogel composite for potential agricultural application |
| title_short | Characterization of water hyacinth cellulose-g-poly(ammonium acrylate-co-acrylic acid)/nano-hydroxyapatite polymer hydrogel composite for potential agricultural application |
| title_sort | characterization of water hyacinth cellulose g poly ammonium acrylate co acrylic acid nano hydroxyapatite polymer hydrogel composite for potential agricultural application |
| topic | Polymer Nano-composite Nano-hydroxyapatite Swollen cellulose Water hyacinth Moisture retention |
| url | http://www.sciencedirect.com/science/article/pii/S2211715619300207 |
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