(562g) Measurement of Hansen Solubility Parameter on Pollen Particle Surface and Application to Pollen Removal in Air
- Conference: AIChE Annual Meeting
- Year: 2019
- Proceeding: 2019 AIChE Annual Meeting
- Group: Environmental Division
- Time: Wednesday, November 13, 2019 - 3:30pm-5:00pm
HSP is physical property value of each substances. HSP is based on the idea that âtwo substances having similar interactions between molecules are high affinity". And HSP is consisted of 3 components: dispersion forces term, polar forces term and hydrogen-bonding forces term. The dispersion force term is the general van der Waals interactions between just about everything. Polar force term is the familiar âpositive attracts negativeâ electrical attractions arising from dipole moments. hydrogen-bonding forces term is due to hydrogen bonding. HSP is measured experimentally by evaluating the affinity with organic solvents and using Hansen solbility sphere method. Since HSP is possible to grasp the surface physical properties of the material quantitatively, it has been used for many fields, such as petroum, pharmacy and food.
In this experiment, I measured HSPs for pollen particle, cedar and cypress which are major allelgen in Japan, using Hansen solbility sphere method. For HSP measurement on a fine particle surface, the affinity evaluation by the sedimentation method and dynamic light scattering method (DLS) are commonly used. However, HSP measurement of low-density and non-spherical particles like pollen by the above-mentioned measurement methods is difficult. So, I measured HSPs of each pollen by the capillary penetration method which is I developped.
Finally, considering these HSPs, I designed mixed solvents highly compatible with pollen and presented guidelines for future research and development.