ERIC Number: EJ945555
Record Type: Journal
Publication Date: 2011
Abstractor: As Provided
Reference Count: 0
Microfluidics Meets Dilute Solution Viscometry: An Undergraduate Laboratory to Determine Polymer Molecular Weight Using a Microviscometer
Pety, Stephen J.; Lu, Hang; Thio, Yonathan S.
Chemical Engineering Education, v45 n2 p93-100 Spr 2011
This paper describes a student laboratory experiment to determine the molecular weight of a polymer sample by measuring the viscosity of dilute polymer solutions in a PDMS microfluidic viscometer. Sample data are given for aqueous solutions of poly(ethylene oxide) (PEO). A demonstration of shear thinning behavior using the microviscometer is described as well. The results of the implementation of the procedure with undergraduate students are also discussed.
Descriptors: Plastics, Undergraduate Students, Chemistry, Laboratory Experiments, Science Instruction, College Science, Molecular Structure, Measurement Techniques, Measurement Equipment, Scientific Principles
Chemical Engineering Education, Chemical Engineering Division of ASEE. P.O. Box 142097, Gainesville, FL 32614. Tel: 352-392-0861; Fax: 352-392-0861; e-mail: firstname.lastname@example.org; Web site: http://cee.che.ufl.edu/index.html
Publication Type: Journal Articles; Reports - Descriptive
Education Level: Higher Education
Authoring Institution: N/A