Related Experiment Videos
Preparation and characterization of high-surface-area polymer substrates for microcalorimetry
V A Lee1, R G Craig, F E Filisko
1Biologic and Materials Sciences, Dental School, University of Michigan, Ann Arbor 48109, USA.
Journal of Biomedical Materials Research
|May 1, 1996
Summary
High-surface-area polymer substrates were created for protein adsorption microcalorimetry. These novel materials enable precise measurement of protein interactions, advancing biophysical studies.
Area of Science:
- Materials Science
- Physical Chemistry
- Biophysics
Background:
- Protein adsorption studies require well-defined surfaces.
- Characterizing polymer-surface interactions is crucial for understanding adsorption phenomena.
Purpose of the Study:
- To prepare and characterize high-surface-area polymeric substrates for microcalorimetry of protein adsorption.
- To evaluate the surface properties and wettability of different polymer substrates.
Main Methods:
- Polymer adsorption onto fumed silica to create high-surface-area substrates.
- Infrared spectroscopy, adsorption isotherms, contact angle measurements, pendant drop analysis, Wilhelmy plate studies.
- Microcalorimetry using a modified Tien-Calvet microcalorimeter to measure heats of adsorption.
Main Results:
- Successful preparation of high-surface-area polystyrene, poly(styrene-co-butyl methacrylate), and poly(styrene-co-allyl alcohol) substrates.
- Poly(styrene-co-allyl alcohol) exhibited the highest wettability by water.
- Interfacial energy estimations revealed polystyrene had the highest and poly(styrene-co-allyl alcohol) the lowest interfacial energy against water.
- Microcalorimetry successfully measured lysozyme adsorption heats on the prepared substrates.
Conclusions:
- The developed high-surface-area polymeric substrates are suitable for microcalorimetry of protein adsorption.
- Surface properties and wettability can be tailored by polymer composition.
- These substrates provide a valuable platform for studying protein-surface interactions.