Date of Award
2018
Publisher
North Dakota State University
Document Type
Thesis
Degree Awarded
Master of Science (MS)
Program
Materials and Nanotechnology
Department
Materials and Nanotechnology
College
Graduate and Interdisciplinary Studies
Faculty Advisor
Croll, Andrew B.
Description
To determine correlation between geometry and material three different model films: polymethylsiloxane (PDMS), polystyrene (PS), and polycarbonate (PC), were singly bent and doubly bent (forming D-cones). Bends were chosen as they are fundamental in larger complex geometries such as origami and crumples. Bending was carried out between two plates taking force and displacement measurements. Processing of data using moment equations yielded values for bending moduli for studied films that were close to accepted values. Force recovery showed logarithmic trends for PDMS and stretched exponential trends for PS and PC. In a separate experiment a triblock copolymer of polystyrene–polyacrylic acid–polystyrene was subjected to different good and bad solvent mixing with any resulting particle morphology examined. Particles formed more uniformly with high water concentration, particles formed with high toluene concentration and agitation yielded three separate morphologies.
Recommended Citation
Elder, Theresa Marie, "Bending and Force Recovery in Polymer Films and Microgel Formation" (2018). Materials and Nanotechnology. 31.
https://digitalcommons.ndsu.edu/materials-nanotechnology/31
Rights
NDSU Policy 190.6.2
Author ORCID Identifier
0000-0002-1165-059X
Handle Identifier
https://hdl.handle.net/10365/28705