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ERIC Number: EJ832470
Record Type: Journal
Publication Date: 2009-Mar
Pages: 3
Abstractor: As Provided
Reference Count: 16
ISSN: ISSN-0021-9584
Coloring a Superabsorbent Polymer with Metal Ions: An Undergraduate Chemistry Experiment
Yaung, Jing-Fun; Chen, Yueh-Huey
Journal of Chemical Education, v86 n3 p347-349 Mar 2009
A novel undergraduate chemistry experiment involving superabsorbent polymers commonly used in diapers and other personal care products is described. Students observe the removal of divalent transition-metal ions from aqueous solutions by the polymers. With the procedures provided, students are able to color the superabsorbent polymers with metal halides solutions and isolate the the formed metal(II) polyacrylates. Metal(II) polyacrylates with unique colors are obtained with metal ions Cu[superscript 2+], Ni[superscript 2+], Co[superscript 2+], and Fe[superscript 2+]. The ion-exchange capacity of the polymer with Cu[superscript 2+] is also investigated by colorimetry. (Contains 1 table, 2 figures, 1 scheme, and 6 notes.)
Division of Chemical Education of the American Chemical Society. Subscription Department, P.O. Box 1267, Bellmawr, NJ 08099-1267. Tel: 800-691-9846; Tel: 856-931-5825; Fax: 856-931-4115; e-mail:; Web site:
Publication Type: Journal Articles; Reports - Evaluative
Education Level: Higher Education
Audience: Teachers
Language: English
Sponsor: N/A
Authoring Institution: N/A