Monthly Dinner Meeting
November 9, 2000

Please note: Nov. 9, not Nov. 8 as was erroneously
mentioned in the previous announcement.



Bryan Balazs (speaker) & James LeMay
Weapon Materials Compatibility and Aging Group
Lawrence Livermore National Laboratory


Polymers used in applications by the US DOE are often
very similar to consumer or commercial materials, but
the former are meticulously formulated to solve unusually
stringent and critical engineering problems. In addition,
these materials must retain their engineering properties
over decades in an environment which is often very hostile.
Too often, component lifetime assessment has been done
through myopic extrapolations of test data which assume
that the trend used for the extrapolation is valid. Our
group at Lawrence Livermore National Laboratory has studied
one of these materials, filled siloxane foams, in detail
with the aim of developing rational methodologies for
component lifetime prediction. This work molds three
distinct areas of research to achieve the final goal:
(1) an understanding of how the underlying chemistry of
this material evolves over time or with accumulated damage;
(2) the development of the material's time-dependent
viscoelastic behavior; and (3) an investigation of how the
material's microstructure deforms under mechanical stress.
We have characterized these materials by x-ray tomography,
Differential Scanning Calorimetry, Dynamic Mechanical
Analysis, Solid State Nuclear Magnetic Resonance, crosslink
density determinations, and the measurement of volatile
polymer fragments through Gas Chromatography/Mass
Spectroscopy. This talk will discuss how these techniques
can be combined with multi-scale modeling approaches to
enable a more accurate prediction of a component's
macroscopic behavior through its lifetime.

This work was performed under the auspices of the U.S.
Department of Energy by the University of California,
Lawrence Livermore National Laboratory, under contract
# W-7405-ENG-48.



Cost: $30 ($15 for unemployed/retired/students)

Social Hour: 6:00 PM
Dinner: 7:00 PM
Talk: 8:00 PM

Location: the "Club House Restaurant",
1875 Ebarcadaro Road, Palo Alto.

Attendance for the talk alone at 8 PM is free; we ask
that you contact us for headcount purposes. Please
be explicit about attending only the talk if that is
the case, so we don't count you for dinner. Please try
to arrive no later than the nominal start time of 8 PM.

From 101 in Palo Alto, take Embarcadaro Road East.
Pass through the first traffic light, and turn left
at the sign for "Airport and Golf Course". The
"Club House Restaurant" will be on the left after
turning into the parking lot. (Look for the large
metal sculpture near the building.) If you go past
the airport you've gone too far.

restaurant phone 650-856-0999
(do not call restaurant for reservations)

Dinner: Italian Buffet - no advance choice required.
(there will be vegetarian items)


- Make reservations by 5PM Friday Nov. 3

- Please provide contact information (email or phone),

- You should receive confirmation of your registration;
if not, please try again.

- Register through the web site (preferred),

or contact:
Russ Beste

- We must ask you to be liable for the cost of
your dinner if you register and do not attend;
cancellations may be made up to the registration


Other events of possible interest to the
GGPF audience:

Oct. 25-28, San Francisco
Western Regional ACS meeting

Oct. 26, Emeryville
BAMS meeting (res. requested by noon Oct.19)
"Probing macromolecular structures using mass
spectrometry", Prof. Carol Robinson, Oxford Univ.
or email Lori Zeller at

Nov. 1-3, Palo Alto
Analytical Laboratory Manager's Association
21st Annual Conference

Nov. 2-3, San Francisco
Novel Materials for Electronics Miniaturization

Nov. 8, Sunnyvale
ASM Dinner Meeting
"Metallic Glasses"
Bill Johnson

Nov. 10, Milpitas
AIChE SouthBay Tour & Dinner Meeting
Tour of Elantec Semiconductor

Nov. 14, Berkeley
AIChE dinner meeting:
"Visualizing Molecules: Atoms and Molecules - Up
Close and Personal as Seen with the Advanced Light
Source", Dr. Zahid Hussain, LBNL

Nov. 15
NCCAVS Thin Film User's Group monthly meeting
November topic: Low-k Dielectrics

Nov. 16
SCV ACS meeting
Dr. Howard Turner, Symyx Technologies,
speaking on combinatorial chemistry.
Details t.b.a.

Dec. 7, Santa Clara
SPE sponsored tour of INTEL

Dec. 13, UC Extension, Sunnyvale
Noon-5 PM short course:
"Materials Issues in Semiconductor Packaging"
by Prof. Guna Selvaduray, SJSU

Dec. 13, Sunnyvale
IEEE/CPMT Dinner Meeting:
"IC Packaging Roadmaps" --
Dave Tovar, IPAC

Dec. 13, Sunnyvale
ASM Dinner Meeting
"Recovery of the Challenger Shuttle Data Tapes"
Rick Brackshaw
more regular chemistry & magnetic media, but a
great story.>

A little out of the area, but included here due to
repeated questions:

Dec. 9-13, Hawaii
POLY Millennial 2000
(ACS Polymer Division 2000 Biennial Meeting)

Dec. 14-19, Hawaii
Pacifichem 2000 Meeting, Honolulu, HI
(includes six or more POLY Sessions)

---- 2001 -----

Jan. 10, Sunnyvale
ASM dinner meeting
"Beyond Silicon: Microfabrication with Metals,
Plastics, and Ceramics"
Alfredo Morales, Sandia National Laboratories

Feb. 2-3, 2001 Stanford
4th Annual Paul Flory Conference
on Physical and Macromolecular Chemistry

Feb. 4-6, 2001, Stanford
Stanford Polymer Short Course
(right after the Flory Symposium)

Feb. 5-9, Santa Clara
AVS 2nd International Conference on Microelectronics
& Interfaces


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