Excellent oil absorbent kapok [Ceiba pentandra (L.) Gaertn.] fiber: fiber structure, chemical characteristics, and application
- 1.1k Downloads
The study focused on kapok [Ceiba pentandra (L.) Gaertn.] fruit as a biomass for effective utilization. Kapok fruits were harvested just before full maturation at the campus of University of the Philippines Los Banos and in southern Vietnam. The kapok fibers are utilized locally as fiberfill in pillows, quilts, and some soft toys. Kapok fiber was isolated and analyzed microscopically, and the physicochemical properties were determined by spectroscopic methods. Some tests were done to determine the effective utilization of kapok fiber. Microscopic analysis of the higher structure of kapok fiber gave quite different results from cotton fiber, which has a significantly homogeneous hollow tube shape and is composed of cellulose (35 % dry fiber), xylan (22%), and lignin (21.5%). Kapok fiber is characterized by having a high level of acetyl groups (13.0%). Usually cell walls of plants contain about 1%–2% of acetyl groups attached to noncellulosic polysaccharides. Kapok fiber is significantly hydrophobic and does not get wet with water. Thus, the absorptivity of oil was tested. The fiber selectively absorbed significant amounts of oil (40 g/g of fiber) from an oil suspension in freshwater and seawater. It is suggested that this fiber could be used to recover oil spilled in seawater.
Key wordsOil absorbent Ceiba pentandra (L.) Gaertn. Lignin Neutral sugar composition Acetyl group
Unable to display preview. Download preview PDF.
- 1.Peralta AG (1982) Marketing of minor fibre crops. In: Lesser used fiber crops. PCARRD. Los Baños. Phillippines, pp 41–43Google Scholar
- 2.Schöning AG, Johansson G (1965) Absorptiometric determination of acid-soluble lignin in semichemical bisulfite pulp and in some woods and plants. Svensk Papperstidn 68:607–613Google Scholar
- 9.Yasuda S, Terashima N, Ito K (1980) Chemical structures of sulfuric acid lignin. I. Chemical structures of condensation products from monolignols. Mokuzai Gakkaishi 26:552–557Google Scholar
- 10.Yasuda S, Terashima N, Ito K (1981) Chemical structures of sulfuric acid lignin. IV. Reaction of arylglyceroi-Β-aryl ether with seventy-two percent sulfuric acid. Mokuzai Gakkaishi 27:879–884Google Scholar
- 11.Yasuda S, Terashima N, Hamanaka A (1984) Chemical structures of sulfuric acid lignin. VI. Physical and chemical properties of sulfuric acid lignin. Mokuzai Gakkaishi 29:795–800Google Scholar
- 12.Choi HM (1996) Needlepunched cotton nonwovens and other natural fibers as oil cleanup sorbents. J Environ Sci Health A31:1441–1457Google Scholar
- 13.Dean JA (ed) (1985) Lange's Handbook of Chemistry. McGraw-Hill, New York, pp 10–99Google Scholar