Comparison of water retention and thermal properties of various polysaccharides, their derivatives and blends

Authors

  • Ma. Assunta C. Cuyegkeng Department of Chemistry, Ateneo de Manila University, Loyola Heights, Quezon City
  • Terence G. Henares Department of Chemistry, Ateneo de Manila University, Loyola Heights, Quezon City
  • Janeth B. Presores Department of Chemistry, Ateneo de Manila University, Loyola Heights, Quezon City
  • Ma. Amy L. Dimalanta Department of Chemistry, Ateneo de Manila University, Loyola Heights, Quezon City

DOI:

https://doi.org/10.26534/kimika.v18i1.9-12

Keywords:

dextran, κ-carrageenan, nata de coco, chitosan, poly-(N-isopropylacrylamide), carboxymethyl dextran, dextran sulfate, dextran triacetate, cellulose triacetate, semi-interpenetrating network

Abstract

The Philippines has an abundance of polysaccharide resources such as different forms of cellulose (nata de coco, kapok, ramie, banana fiber, etc.). This paper presents some polysaccharides hydrogels, which have numerous higher value applications. Hydrogel properties are related to water retention property, which in turn can be associated with thermo- or pH-sensitivity. These properties can be modified through derivatization. Acetylation significantly decreases the solubility of the polysaccharide in water and its ability to form hydrogels. The carboxymethyl group decreases water retention without losing its hydrophilicity altogether. Semi-interpenetrating networks, on the other hand, can have controlled properties depending on the amount of crosslinking. These are observed with the help of thermal analysis and equilibration experiments.

Downloads

How to Cite

Cuyegkeng, M. A. C., Henares, T. G., Presores, J. B., & Dimalanta, M. A. L. (2002). Comparison of water retention and thermal properties of various polysaccharides, their derivatives and blends. KIMIKA, 18(1), 9–12. https://doi.org/10.26534/kimika.v18i1.9-12

Issue

Vol. 18 No. 1 (2002)

Section

Research Articles

License

Authors who publish with this journal agree to the following terms:

  1. Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
  2. Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
  3. Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).