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Rheology Bulletin

Vol. 65, No. 2 (July 1996)

Rakesh Gupta, Editor

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Executive Committee - 1995-97

President Kurt F. Wissbrun
Vice President Ronald G. Larson
Secretary Andrew M. Kraynik
Treasurer Edward A. Collins
Editor Morton M. Denn
Past President Robert C. Armstrong
Members-at-Large Gerald G. Fuller
A. Jeffrey Giacomin

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A.J. Giacomin, chair
S. Drappel
T.C. Jordan
P. Moldenaers
W.E. VanArsdale
L.E. Wedgewood
P.E. Clark, chair
D. G. Baird
E. A. Collins
S. Muller
W. Prest
W. E. VanArsdale
E. Webber
Meetings Policy
R.G. Larson, chair
G.G. Fuller
A.J. Giacomin
A.M. Kraynik
R.L. Powell
Bingham Award
R. H. Colby, chair
A. Chow
D. F. James
A. B. Metzner
W. M. Prest, Jr.
R. K. Prud'homme
E. S. G. Shaqfeh

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XIIth International Congress on Rheology

The next International Congress on Rheology will be held in Quebec City, Canada, August 18 - 23, 1996. The detailed program is available on the World Wide Web at:


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68th Annual Meeting
Galveston, TX
February 16 - 20, 1997

The next annual meeting of the Society of Rheology will be held at the San Luis Hotel in Galveston, Texas. Details of the technical program may be found on the Society's web page at http://www.umecheme.maine.edu/sor/ or inside this issue of Rheology Bulletin. The meeting organizers are:

Technical Program Chairmen Donald G. Baird
Department of Chemical Engineering
Virginia Tech
Blacksburg, VA 24061-0211
(540) 231-5998; Fax: (540) 231-2732
e-mail: dbaird@vt.edu

Jay D. Schieber
Department of Chemical Engineering
Illinois Institute of Technology
10 W. 33rd Street
Chicago, IL 60616
(312) 567-3046; Fax: (312) 567-8874
e-mail: cheschieber@iit.edu
Local Arrangements Chairman William E. VanArsdale
Department of Mechanical Engineering
University of Houston
Houston, TX 77204-4792
(713) 743-4525; Fax: (713) 743-4503
e-mail: vanarsdale@uh.edu
A two-day short course on Flow Visualization will be taught in Galveston, February 15-16, by Professors D.V. Boger, J.A. Byars, K. Walters and R. Powell. Course description and registration information are enclosed.
A poster session will be held in Galveston. The deadline for submission of abstracts is January 10, 1997. For details see the enclosed flyer.
Several companies will exhibit rheological instrumentation at the annual meeting.

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H. Henning Winter
1996 Bingham Medalist

[Photo of H. Winter]The Bingham medal for 1996 will be awarded to H. Henning Winter, Distinguished University Professor of Chemical Engineering and Adjunct Professor of Polymer Science and Engineering at the University of Massachusetts, Amherst. This award has been given in recognition of outstanding contributions to experimental rheology and rheometry of gels and polymer melts.

Winter obtained his Dipl-Ing. at the University of Stuttgart, Germany, and a M. Sci. in Chemical Engineering at Stanford University. Subsequently, he earned a Ph.D. (summa cum laude) in Chemical Engineering at the University of Stuttgart and wrote his "Habilitation" for the area of Rheology. He has been a post-doctoral fellow at the Rheology Research Center at the University of Wisconsin, a Visiting Professor at the University of Minnesota and at the Max Planck Institute for Polymers in Mainz. In 1979, he joined the faculty of the University of Massachusetts where, in 1994, the Trustees of the University appointed him to "Distinguished University Professor". He has been the Editor of Rheologica Acta since 1990 and is a member of the editorial boards of the Journal of Rheology and the Journal of Non-Newtonian Fluid Mechanics.

Winter and his research group, in a series of ground breaking papers, have characterized the rheology of polymers during gelation. They discovered that the gel point of polymers is marked by self-similar relaxation at long times. This was a clear breakthrough in an area which until then had been viewed as not accessible to rheology in a quantitative way. The simplicity of the behavior at the gel point is quite striking and the behavior discovered by Winter and his group makes it easy to identify the gel point. This approach has helped many researchers in their study of solidifying materials by both chemical and physical gelation. The experimental findings have also apparently initiated a rather active development of theories for the rheology of gels, mostly in the physics community. However, these results have also had technological impact, supporting the commercial development of gels for adhesives, sealants, toners, and biological applications.

More recently, Winter and his co-workers M. Baumgartel and A. Schausberger discovered that the relaxation of linear, flexible polymers with a uniform chain length follows a scaling relation. The parameters are the plateau modulus, the longest relaxation time, and the scaling exponent. The scaling relation has potential as a starting condition for the exploration of polymers with more complicated molecular architecture including branching, polydispersity, and chain stiffness.

For generating biaxial extension in small samples, Winter invented the technique of lubricated squeezing and studied it jointly with C.W. Macosko. This simple technique was the first one to give step-strain biaxial extension data. Biaxial extension data are important for the development of constitutive equations and for selecting polymers which are suitable for polymer processing operations such as film blowing and blow molding. The method has been used in several laboratories, and it has recently been adopted for commercial rheometry.

H.H. Winter has contributed to the numerical modeling of polymer flows with a focus on technologically important areas. His 1977 paper on viscous dissipation is considered by many as a classic paper in the area. His current research interests include gelation, rheology and material structure, and rheometrical methods. A list of his publications can be found at http://www.ecs.umass.edu/che/winter.html.

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1996 Journal of Rheology Publication Award

The 1996 Journal of Rheology Publication Award has gone to L.B. Chen, B.J. Ackerson, and C.F. Zukoski for their paper entitled, "Rheological consequences of microstructural transitions in colloidal crystals," and published in the Journal of Rheology, 38 (2), 193-216 (1994).

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Membership Application Forms and Other Information
Available on the World Wide Web

Application forms for membership in the Society of Rheology can now be downloaded from the home page of the Society on the World Wide Web. The address is http://www.umecheme.maine.edu/sor/. Also available on the home page are abstracts of forthcoming papers in the Journal of Rheology and a listing of upcoming rheology meetings.

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Comments from the President
Kurt Wissbrun


The first reaction of one who has been entrusted with the responsibility of presiding over an organization is to consider its present state. If that state is sound, as I am delighted to believe is true of SoR, then the second reaction is to worry about future threats to its health. Let me summarize my views of SoR's current situation. The Journal is, by all measures,
subjective and objective, highly regarded editorially, and we have successfully managed the transition of the Editorship. The Editor's decisions on publication are based only on quality, not on financial restrictions on number of pages. The Journal has increased substantially in size, while the cost per page to the Libraries has been reduced, the publication page charge to authors eliminated, and the membership dues kept constant since 1988. In addition, we have managed to build the publication reserve fund that is essential for the above-mentioned editorial freedom, acting as a ballast to allow occasional cost overruns in a time-averaged break-even mode of operation.

The Annual Meetings, due to the dedicated efforts of our volunteer Technical Program and Local Arrangements Committees, continue to be successful in attendance, technical content, time for presentation, and opportunity to interact with colleagues, and at a cost that is moderate in comparison with other meetings. The introduction of poster sessions has eased, to some extent, the burden of scheduling multiple parallel sessions. Further, the Short Courses given in conjunction with the Meetings continue to be popular.

The Membership of the Society has increased to a record number, which may be taken as evidence for the estimations of the soundness of the Journal and the Meetings. In addition, great credit must also be given to the energetic and effective activities of the Membership Committee in publicizing these benefits of membership. Broadening the scope of the Bulletin, and establishment of a WWW home page are efforts to increase communication with and among members of the Society.

What, then, are the threats to this happy state of affairs? One, common to all Technical Society publishers, is the apparently inexorable decline of library subscriptions. In the short run, the financial burden caused by this may have to be a modest increase to the members of their share of the publication cost. On a longer time scale, this will be compounded by the unknown effects of the inevitable growth of electronic publishing. Our affiliation with AIP, and its cooperation with other publishers, offers us the best hope for coping with whatever changes might occur. Personally I am optimistic that the refereed archival journal will survive because it can serve as a filter and as a life preserver to keep readers from drowning in a sea of information. Such a role may suggest changes in publication policy, for example, as to encourage more review articles. Another threat is more specific to SoR, as an inter-disciplinary society, most of whose members belong to other, perhaps primary, societies. As subfields mature and problems are solved, practitioners may no longer consider SoR
membership to be important to them. They may drop out, and form rheology groups within their primary societies. The loss to them is the lack of interaction with advances in related subfields that may be useful to them; the loss to SoR is the lack of knowledge of new rheological problems that may have arisen from advances in their technology. It is clear from the limited communication from the members that the answer to this problem is not to have additional meetings, workshops, etc. However, perhaps an answer may lie in making use of the dormant provision in our Constitution for the formation of Divisions. Perhaps a Division composed of members with a fairly narrow area of common interest could act as a bridge to the members of the principal technical society (ies) devoted to that interest; it could also co-sponsor symposia at meetings of those societies (meetings and symposia that are now being held anyway, without SoR involvement). The risks, financial and technical, would probably be small; the possible gain would be the broadening of our base without greatly affecting the core Society. Your views on this proposal, and on other topics addressed or ignored in these comments, are most welcome! My e-mail address is kfw@aip.org.

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Technical Program for Galveston

Authors wishing to present a paper in Galveston should submit a camera-ready abstract on the enclosed form to the Technical Program Co-chairman, Donald G. Baird, by September 13, 1996. A copy of the abstract should also be sent to the appropriate symposium organizer. The planned symposia and their organizers follow:

1. Drilling Fluids J. George Savins
Baroid Drillings Fluids
1828 Shady Glen Lane
Dallas, TX 75232
(214) 337-5929, Fax: (214) 337-5929 [follow instructions]

Henry V. Nickens
Amoco Exploration Technology
3000 North Sam Houston Pkwy, East
P.O. Box 1675
Houston, TX 77251
(713) 987-5900, Fax: (214) 337-5929
2. Compression Rheology and
Porous Media Flow
Chip Zukowski
Department of Chemical Engineering
University of Illinois
1209 W. California Street
Urbana, IL 61801
(217) 333-7379, Fax: (217) 244-8068
e-mail: zukoski@aries.scs.uiuc.edu

David V. Boger
D.V. Boger and Associates
71-73 Baker Rd.
Harkaway, Victoria 3806, AUSTRALIA
61-3-344-7440, Fax: 61-3-344-4153
e-mail: david_boger.chem_eng@muwaye.unimelb.edu.au
3. Rheology Of Solids Gregory B. McKenna
National Institute of Standards and Technology
A-2089 Bldg 224
Gaithersburg, MD 20899
(301) 975-6752; Fax: (301) 977-2018
e-mail: greg@micf.mist.gov
4. Nonisothermal Flows and
Thermodynamics of Flowing
Juan dePablo
Department of Chemical Engineering
University of Wisconsin
1415 Johnson Drive
Madison, WI 53706
(608) 262-7727; Fax: (608) 262-5434
e-mail: depablo@coefac.engr.wisc.edu

Jan V. Sengers
Department of Chemical Engineering
University of Maryland
College Park, MD 20742-2111
(301) 405-2983; Fax: (301) 405-0523
e-mail: js45@umail.umd.edu
5. Polyolefins and Industrial
William Hartt
Building 208-1-01
St. Paul, MN 55144-1000
(612) 736-0238; Fax: (612) 733-3304
e-mail: whartt@mmm.com

Skip Rochefort
Oregon State University
Chemical Engineering Department
Gleeson Hall 103
Corvallis, OR 97331-2702
(503) 737-2408; Fax: (503) 737-4600
e-mail: rochefsk@engr.orst.edu
6. Granular Materials Norman J. Wagner
Department of Chemical Engineering
University of Delaware
Colburn Laboratory
Newark, DE 19716
(302) 831-8079; Fax: (302) 831-1048
e-mail: wagner@che.udel.edu

Raffaella Ocone
Department of Chemical Engineering
University of Nottingham
Nottingham, England
Fax: +44-115-951-4181
7. Charged Systems and Colloids Ralph H. Colby
Dept. of Materials Science & Engineering
The Pennsylvania State University
309 Steidle Building
University Park, PA 16802-5007
(814) 863-3457; Fax: (814) 865-2917
e-mail: RHC@plmsc.psu.edu
8. Experimental Methods in
Anthony J. McHugh
Department of Chemical Engineering
University of Illinois
1209 W. California
Urbana, IL 61801
(217) 333-1178; Fax: (217) 333-5052
e-mail: a-mchugh@uiuc.edu

Ali Berker
3M Center
Building 236-2B-11
St. Paul, MN 55144-1000
(612) 737-7728; Fax: (612) 736-6377
e-mail: aberker@mmm.com
9. Numerical Simulation Michael Graham
Department of Chemical Engineering
University of Wisconsin
1415 Johnson Drive
Madison, WI 53706
(608) 265-3780; Fax: (608) 262-5434
e-mail: graham@engr.wisc.edu

Bamin Khomami
Department of Chemical Engineering
Washington University
Campus Box 1087
St. Louis, MO 63130
(314) 935-6065, Fax: (314) 935-4434
e-mail: bam@wuchel.wustl.edu
10. Visualization and Optical
Jan van Egmond
Department of Chemical Engineering
University of Massachusetts
159 Goessmann Laboratory
Amherst, MA 01003-3310
(413) 545-0593; Fax: (413) 545-1647
e-mail: vanegmon@ecs.umass.edu
11. Constitutive Equations,
Non-Newtonian Fluid


Henning H. Winter
Department of Chemical Engineering
University of Massachusetts
159 Goessmann Laboratory
Amherst, MA 01003-3310
(413) 545-0922; Fax: (413) 545-1647
e-mail: winter@oitvms.oit.umass.edu

Joe Goddard
Department of AMES
University of California - San Diego
9500 Gilman Dr.
La Jolla, CA 92093-0310
(619) 534-4508; Fax: (619) 534-4543
e-mail: jgoddard@ames.ucsd.edu
11. Constitutive Equations,
Non-Newtonian Fluid


Michael Renardy
Department of Mathematics
Virginia Tech
Blacksburg, VA 24061
(540) 231-6549; Fax: (540) 231-5960
e-mail: renardym@math.vt.edu

Joe Goddard
Department of AMES
University of California - San Diego
9500 Gilman Dr.
La Jolla, CA 92093-0310
(619) 534-4508; Fax: (619) 534-4543
e-mail: jgoddard@ames.ucsd.edu
12. Composites, LCPs, and
Block Copolymers
Patrick T. Mather
Phillips Laboratory
10 E. Saturn Blvd.
Edwards AFB, CA 93524-7680
(805) 275-5416; Fax: (805) 275-5471
e-mail: Matherp@lablink.ple.af.mil

David Mead
Department of Mechanical Engineering
University of Michigan
2350 Hayward Street
Ann Arbor, MI 48109-2125
(313) 936-0431
e-mail: dmead@engin.umich.edu
13. Extensional Rheometry Gareth McKinley
Division of Applied Sciences
Harvard University
Pierce Hall 316
Cambridge, MA 02138
(617) 496-5167; Fax: (617) 495-9837
e-mail: gareth@stokes.harvard.edu

David C. Venerus
Department of Chemical Engineering
Illinois Institute of Technology
124 Perlstein Hall
10 W. 33rd Street
Chicago, IL 60616
(312) 567-5177; Fax: (312) 567-8874
e-mail: chevenerus@iit.edu
14. Processing Rheology A. Jeffrey Giacomin
Department of Mechanical Engineering
University of Wisconsin
1513 University Avenue
Madison, WI 53706-1572
(608) 262-7473; Fax: (608) 265-2316
e-mail: giacomin@ie.engr.wisc.edu

Hugh O’Donnel
Procter and Gamble Company
6110 Center Hill
Cincinnati, OH 45224
(513) 634-6920; Fax: (513) 634-5712
e-mail: odonnell.hj@pg.com
15. Interfacial Rheology and
Matthew Tirrell
Department of Chemical Engineering & Material Science
University of Minnesota
Minneapolis, MN 55455
(612) 625-5823; Fax: (612) 624-6564
e-mail: tirrell@maroon.tc.umn.edu
16. Food Processing Rheology Jozef L. Kokini
Food Science Department
Rutgers University
New Brunswick, NJ 08903
(908) 932-9669, Fax: (908) 932-6776
17. Suspensions Daniel J. Klingenberg
Department of Chemical Engineering
University of Wisconsin - Madison
1415 Engineering Drive
Madison, WI 53706
(608) 262-8932; Fax: (608) 262-5434
e-mail: klingen@neep.engr.wisc.edu

Stacy G. Bike
Department of Chemical Engineering
University of Michigan
3038 H. H. Dow
Ann Arbor, MI 48109-2136
(313) 936-0117; Fax: (313) 763-0459
e-mail: sbike@engin.umich.edu

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Deciding the Technical Content of Annual Meetings

Members may or may not be aware of the process by which the technical program of an annual meeting is formulated. Decisions in this regard are made by the Chair of the Technical Program Committee in consultation with the Executive Committee of the Society. The Society is always open to suggestions from the membership regarding specific symposia topics. The person proposing a particular topic should support the case by identifying, among other things, the target audience, potential speakers and session chairs. The proposal can be forwarded to a technical program chair well in advance of the target meeting. A proposal can also be submitted to the Vice President of the Society who chairs the Meetings Policy Committee. Names of technical program chairs, when available, can be found (i) in the minutes of previous Executive Committee Meetings (ii) on the SoR home page at http://www.umecheme.maine.edu/sor/ (iii) by contacting a member of the Executive Committee. This is one way that members can shape the future direction of the Society. In this regard see also the accompanying Comments of Society President Kurt Wissbrun.

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David Boger Receives 1995 Walter Ahlstrom Prize

The Finnish Academies of Technology have awarded the 1995 Walter Ahlstrom Environmental Prize to Professor David Boger of the University of Melbourne, Australia for his research on non-Newtonian fluids which has resulted in the reduction of residues during aluminum production.

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Rheology Bulletin
Author Guidelines Formulated

The Rheology Bulletin will now publish papers on the applied aspects of Rheology which are intended for the non-specialist. (Archival research papers should be sent to the Journal of Rheology which is also published by the Society of Rheology.) Appropriate topics include the application of rheological principles to a specific system, instrumentation for rheological measurements, description of interesting rheological phenomena, and the use of well-established rheological techniques to characterize products, processes or phenomena. Papers that describe the historical aspects of the practice of rheology and how these may have influenced current trends are welcome. Also welcome are papers that address the present and changing status of rheological education including papers that describe recent or current innovation in the classroom or laboratory. Consultation with the Editor prior to manuscript submission is encouraged.

Papers should ordinarily not exceed about 4000 words in length. SI units should be used, but any standard style of writing may be employed. The article must have a clear message, and the significance of the work must be explicitly stated. Submit two copies of the manuscript at least three months prior to the issue in which publication is desired. The initial decision about suitability of publication will be made by the Editor. Both solicited and contributed papers may be sent to two or more reviewers. If the paper has been published previously in essentially the same form, permission for reprinting must have been obtained from the copyright holder.

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Computers in Physics
Offered to Society Members at Reduced Rate

The Society has negotiated a special introductory rate for members who would like to subscribe to the American Institute of Physics magazine Computers in Physics. The special introductory rate of $39.95 for one year represents a 20% savings off AIP's regular member rate of $49.95. Since many in the Society may not be familiar with Computers in Physics, we have arranged to have AIP send a sample copy to every member. Watch for the sample copy to arrive in August. If you decide to subscribe to Computers in Physics at the special introductory rate, just mark the special check-off box that will appear on your 1997 membership dues notice. Or contact AIP at:

American Institute of Physics
Subscription Services
500 Sunnyside Boulevard
Woodbury, NY 11797-2999
(800) 344-6902; Fax: (516) 576-2374
e-mail: mktg@aip.org

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Meeting Announcements

August 4-9, 1996
36th IUPAC International Symposium on Macromolecules, Seoul, Korea. Contact: Dr. K.U. Kim, Division of Polymers, Korea Inst. of Science & Tech., P.O. Box 131, Cheongryang, Seoul 130-650, Korea. Tel: 82 2-957-6104; Fax: 82 2-957-6105.
September 9-11, 1996
Fourth International Conference on Flow Processes in Composite Materials, Aberystwyth, UK.
Contact: Dr. R.S. Jones, Dept. of Math., U of Wales, Penglais, Aberystwyth, Dyfed SY23 3BZ, UK. Tel. 44 1970 622762; Fax: 44 1970 622777.
September 29-October 4, 1996
18 Symposium on Rheology, Karacharovo, Russia.
Contact: Dr. L.I. Ivanova, Institute of Petrochemical Synthesis, RAS, 29, Leninsky Pr., Moscow 117912, Russia. Fax: 7 095 230-22-24.
November 17-22, 1996
ASME Symposium on Rheology and Fluid Mechanics of Nonlinear Materials, Atlanta, GA.
Contact: Prof. D. A. Siginer, Dept. of Mechanical Engrg., Auburn University, Auburn, AL 36849. Tel. (334) 844-3331; Fax: (334) 844-3307.
January 7-10, 1997
International Symposium on Lubricated Transport of Viscous Materials, Tobago, West Indies.
Contact: Dr. H. Ramkissoon, Dept. of Mathematics., Univ. of West Indies, St. Augustine, Trinidad, W.I. Fax: (809)645-7132. E-mail: hramki@centre.uwi.tt.
January 8-10, 1997
International Conference on Polymer Characterization, University of North Texas, Denton, TX.
Contact: polychar@marta.phys.unt.edu.
July 27-31, 1997
2nd Pacific Rim Conference on Rheology,Melbourne, Australia.
Contact: Dr. Y.L. Yeow, Dept. of Chemical Engrg., U. of Melbourne, Parkville, Vic. 3052, Australia. Fax: 61 3 9344 4153.
September 29-October 2, 1997
8th International Conference on Mechanics and Technology of Composite Materials, Sofia, Bulgaria.
Contact: Bulgarian Society of Rheology.Fax: 3592 703 433. E-mail: mezi@bgearn.acad.bg

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Change of Address

If you are moving, please inform: Janis Bennett, (516) 576-2403, Fax: 576-2223, or Carolyn Gehlbach, (516) 576-2404 at

c/o American Institute of Physics
500 Sunnyside Boulevard
Woodbury, NY 11797

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Updated 14 February 2010