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ERIC Number: EJ1013025
Record Type: Journal
Publication Date: 2013-Mar
Pages: 4
Abstractor: As Provided
Reference Count: 27
ISBN: N/A
ISSN: ISSN-0021-9584
Using AFM Force Curves to Explore Properties of Elastomers
Ferguson, Megan A.; Kozlowski, Joseph J.
Journal of Chemical Education, v90 n3 p364-367 Mar 2013
An upper-division instrumental chemistry laboratory has been developed in which students use atomic force microscopy (AFM) to collect force curves on polydimethylsiloxane (PDMS) elastomers. Force curves are used to quantify the stiffness of elastomers prepared with different base-to-curing agent ratios. Trends in observed spring constants of the elastomer samples are consistent with Young's elastic moduli measured in previous studies. This experiment has successfully exposed students to modern instrumental applications addressing surface chemistry in the context of examining cross-linked polymers. Ways to adapt the lab exercise to be used with diverse models of AFM are also discussed. (Contains 2 figures.)
Division of Chemical Education, Inc and ACS Publications Division of the American Chemical Society. 1155 Sixteenth Street NW, Washington, DC 20036. Tel: 800-227-5558; Tel: 202-872-4600; e-mail: eic@jce.acs.org; Web site: http://pubs.acs.org/jchemeduc
Publication Type: Journal Articles; Reports - Descriptive
Education Level: Higher Education; Postsecondary Education
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A