<b>Micron-sized polymer particles from tanzanian cashew nut shell liquid. Part II: An assessment of cation-exchange capability of the carboxylated particles</b>
Micron sized polymeric particles were prepared from cashew nut shell liquid and subsequently functionalized to produce micron-sized carboxylated cation exchange resin (MCCER). By titrimetry and analytical procedures employing atomic absorption spectrometry, an assessment of the cation exchange capab...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Chemical Society of Ethiopia
2005-06-01
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| Series: | Bulletin of the Chemical Society of Ethiopia |
| Subjects: | |
| Online Access: | http://www.ajol.info/index.php/bcse/article/view/21104 |
| Summary: | Micron sized polymeric particles were prepared from cashew nut shell liquid and subsequently functionalized to produce micron-sized carboxylated cation exchange resin (MCCER). By titrimetry and analytical procedures employing atomic absorption spectrometry, an assessment of the cation exchange capability of the carboxylated particles was made. The total cation exchange capacity of MCCER was found to be 5.4 plus or minus 0.1 meq/g. The apparent acid strength exponent (pK) of the resin was estimated to be 5.6 plus or minus 0.1 at 30 <sup>o</sup>C. The resin was found to be nonselective toward calcium, magnesium and sodium ions and the affinity of the resin toward competitive exchange of the ions followed the order: Ca<sup>2+</sup> > Mg<sup>2+</sup> > Na<sup>+</sup>. The results indicate that cation exchange capacity of MCCER is comparable to other commercially produced carboxylic cation exchange resins. |
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| ISSN: | 1011-3924 1726-801X |