March 23, 2016

Innovations in Vapor Sorption Science: Materials Characterization Using Molecular Probes

Date and Time

March 23, 2016
8:45 am – 12:15 pm
12:15- 1 pm Lunch

Registration Deadline

March 20, 2016
To register, email:
Colette Orlandi cmo11@psu.edu
814-865-2328

Instructor(s)

Daniel J. Burnett, PhD – Director of Science Strategy
Vladimir Martis, PhD – DVS product manager & Vacuum product specialist

Course Description

Surface Measurement Systems will present a 3 hour applications-oriented seminar focused on the unique physicochemical characterization capabilities of the Gravimetric Dynamic Vapor Sorption (DVS) and Inverse Gas Chromatography (iGC) techniques. Speakers will define the fundamental chemical and physical measurement properties of each technique and highlight recent research areas where vapor sorption characterization is currently being employed. Industries include aerospace, building materials, chemicals, energy, food, filtration and separation, industrial and mineral materials, nuclear, pharmaceutical, personal care, polymers, sorbents and porous materials. Materials amenable to vapor sorption techniques include but are not limited to particles and powders, fibers, films, nanomaterials, composites and components, gels and other viscous materials.

Session 1

Surface energy heterogeneity by inverse gas chromatography (iGC) iGC is a highly sensitive and versatile packed column gas chromatographic technique first developed over 40 years ago to study surface properties of particulate, fibrous and film materials. iGC probes the solid surface interface by exposing the sample to vapor probes of known properties. The intermolecular forces that result from this interaction can be analyzed to quantify the total surface energy of the sample. More recently, the technique has been extended to include surface energy heterogeneity measurements and background humidity conditioning. Surface energy heterogeneity measurements allow calculation of thermodynamic works of adhesion/cohesion useful in predicting binding energies such as particle-particle and film-substrate interaction. Examples relating surface energy heterogeneity to agglomeration behavior, powder mixing/segregation and flow, surface chemistry and surface charging, wettability, process induced surface disorder and composite component surface interaction are highlighted.

Session 2

Gravimetric moisture, organic vapor and gas adsorption/desorption by DVS Recent advances in vapor control technology of DVS provide insights about the interactions and total adsorption capacities of studied materials with water vapor, organic vapors, gases and their mixtures through measurement of isotherms and isobars. Real-time adsorption and desorption kinetics can be used to mimic industrial conditions and thus assess the performance of materials prior to their deployment in adsorption based technologies particularly for chemical and size selectivity. Application of this technology to value-added organic and inorganic materials with high adsorption capacity and surface reactivity used as absorbents, catalysts and in separation processes will be highlighted along with more traditional uses of DVS in the measurement of pharmaceutical, food, personal care and mineral material stability, form/phase, formulation characterization and vapor pressure of solids and liquids.

Location

The Pennsylvania State University
University Park Campus
University Park, PA
Millennium Science Complex Building, Room N-201

Cost

No Cost but registration required