Compositional Depth Profiling of Surface Modified and Multi-Layer Polymers
John S. Hammond, Ph.D.
A joint meeting with the Northern California SAS
The recent developments of polymers that can be used as controlled drug release matrices, conductive membranes for fuel cells and novel photovoltaic matrices, and multi-layer polymers for Organic Light Emitting Diode (OLED) displays have expanded the analytical requirements for these two widely used techniques. Today, there is a critical need to provide the quantitative elemental, chemical and molecular information as a function of depth from the outermost surface of the polymer. To answer this need, cluster ion beam depth profiling, in conjunction with XPS and TOF-SIMS analysis can now analyze chemical and molecular gradients over a range of one micron.
The presentation will first discuss the profiling mechanism of the interaction of Buckminster Fullerene ions, C60+, with different types of radiation sensitive polymer materials. Highlights will then be presented of the complementary analytical information provided by XPS and TOF-SIMS. The analysis of three types of materials will then be explored: the compositional profiling of a block co-polymer, a multi-layer OLED structure and the 3 dimensional composition of the drug in an implantable controlled release polymer.
In 1980, John joined Physical Electronics and has held a number of management positions in the Analytical Laboratory and Marketing Departments. For several years, John was the Product Director for Physical Electronics XPS and TOF-SIMS instrumentation. John is currently a Fellow with Physical Electronics in Chanhassen, Minnesota, and lectures extensively worldwide on the applications of surface analysis techniques
Tuesday, January 20
Michael's Restaurant at Shoreline Park
2960 N Shoreline Blvd
Mountain View, CA 94043
6 PM social hour
7 PM dinner
8 PM lecture
$30 with advance registration
Half price for students, retired, and unemployed. (late fee still applies, if applicable)
Free if you attend just the lecture at 8PM. (but please let us know for headcount)
$40 after registration deadline, if possible -- please contact us to inquire.
we accept cash or checks, but are unable to accept payment by credit card at this time. You may pay at the door.
Please register on the web page http://www.ggpf.org/ or contact:
Deadline for registration:
5 PM, Monday, January 19
You should receive confirmation of your registration; if not, please contact us again.