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Subject: Wanted: Source of Poly(Styrene Sulphonic Acid) -- From: s.martin@sheffield.ac.uk (Simon Martin)
Subject: We need special material -- From: Oleg Kudrin
Subject: Re: local pigmentation of films -- From: Alex
Subject: polymethacrylate resin manufacturer -- From: Carla Eggart
Subject: What is polymer science about? -- From: Alex
Subject: Mold validation -- From: Bill Morrison
Subject: info on cyanoacrylates -- From: sjones3@freenet.npiec.on.ca
Subject: middle school polymer ideas -- From: "Dietz"
Subject: JOB REQUEST: Ph.D. in Polymers with experience in a wide variety of fields -- From: "Dr. Y.C.Bhuvanesh"
Subject: Re: Tg of cured epoxies -- From: pkyleca@aol.com
Subject: Re: polymer MW unit? -- From: ackolbert@aol.com
Subject: Re: Mold validation -- From: cadcammike@aol.com
Subject: Re: PI application?? -- From: pkyleca@aol.com
Subject: Re: What is fracture toughness ??? -- From: condonj@ohsu.edu
Subject: Need experimental properties for neat epoxy resin. -- From: Kollegal G Manohar
Subject: Re: Congealant for "Latex" dipping wanted -- From: Victor Deeb
Subject: Re: Congealant for "Latex" dipping wanted -- From: Victor Deeb

Articles

Subject: Wanted: Source of Poly(Styrene Sulphonic Acid)
From: s.martin@sheffield.ac.uk (Simon Martin)
Date: Tue, 03 Dec 1996 15:18:27 +0100
Does anybody know of a (preferably UK based) source of poly(styrene
sulphonic acid)?
I only need gram quantities of it.
TIA
Simon
-- 
Dr Simon Martin                             s.martin@sheffield.ac.uk
Dept of Physics
Univ. of Sheffield
Sheffield S3 7RH
UK
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Subject: We need special material
From: Oleg Kudrin
Date: Tue, 03 Dec 1996 18:55:55 +0300 (WSU)
Dear Sirs/Madames:
   For our research purposes and for further use in the case of 
success we are looking for a special material which reversible 
change its dimension under local ("point") laser or electro heating.
   It may be a thin film which change its thickness, a threads
which change its lenght, etc.
					Truly yours
					Oleg Koudrin
					koudrin@glas.apc.or
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Subject: Re: local pigmentation of films
From: Alex
Date: Tue, 03 Dec 1996 12:51:30 +0000
Hi,
Maybe it is not even close to your application,
but I have some experience with binding
Vis and fluorescent dyes into micron-scale
patterns using advanced photolithographical resists.
Dyes penetrate only INTO THE BULK of exposed areas.
I can provide details upon e-mail.
-- 
Alex Vekselman
BGM1@musicb.mcgill.ca
514-738-5378
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Subject: polymethacrylate resin manufacturer
From: Carla Eggart
Date: 3 Dec 1996 17:09:22 GMT
Does anyone know might manufacture glyceryl polymethacrylate polymer?
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Subject: What is polymer science about?
From: Alex
Date: Tue, 03 Dec 1996 15:25:14 +0000
Dear colleagues,
What is "chemistry of polymers"?
    Isn't it about any phenomenon involving 1,2 or 3 moieties
    from a polymer or a low MM additive?
What is "physico-chemistry of polymers"?
    Isn't it about any phenomenon involving a collective play 
    of many polymeric units like wettability, solubility,
    penetrability, etc.?
What is "physics of polymers"?
    Isn't it about any phenomenon involving ALL molecules, 
    like refractive index, conductivity, etc?
Where is "material science [of polymers]" in such scheme?
Thanks,
-- 
Alex Vekselman
BGM1@musicb.mcgill.ca
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Subject: Mold validation
From: Bill Morrison
Date: 3 Dec 1996 21:31:23 GMT
What would be the "industry" practice for validating a mold for production of a
componet of a medical device ?
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Subject: info on cyanoacrylates
From: sjones3@freenet.npiec.on.ca
Date: Tue, 03 Dec 1996 14:21:18 -0600
Hello, I am looking for some information on the cyanoacrylates
(superglues).  I am doing a research project for my high school
chemistry project mainly on superglues..and I am trying to understand
why the ester methyl methacrylate is such a strong bonding glue?
can anyone help me with regards to the molecular properties of these
glues?
thanks very much,
steve
sjones3@freenet.npiec.on.ca
-------------------==== Posted via Deja News ====-----------------------
      http://www.dejanews.com/     Search, Read, Post to Usenet
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Subject: middle school polymer ideas
From: "Dietz"
Date: 3 Dec 1996 22:23:38 GMT
I'd like some ideas of how to incorporate a unit on polymers into my middle
school science curriculum.  I'd especially be interested into how to
incorporate this into Earth Science or Life Science.
-- 
This message is sent via Knoxville Middle School. 
Please contact the school through our email to
report any inappropriate use that may occur.
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Subject: JOB REQUEST: Ph.D. in Polymers with experience in a wide variety of fields
From: "Dr. Y.C.Bhuvanesh"
Date: 3 Dec 1996 23:16:29 GMT
Seeking  job in polymer industry: Production, Research & Development, Quality Assurance, Product Development. Interested party may c=
ontact me by any of the following means. Willing to relocate and available immediately.
Polymer Processing (extrusion of fibers, tapes, films, molding, etc.)
Specialty fibers for applications in composites, geotextiles, non-wovens, industrial applications, electronics, etc.
Processing, structure property inter-relationships, mechanical properties, viscoelasticity, etc.
Design and validation of equipment for polymer processing.
Home Address:					Office address:
#1, 134 Cochran Rd.				Research Associate/Assistant Professor
Clemson SC 29631, USA				School of Textiles, Fiber & Polymer Science
Ph./Fax: (864) 654-3764				264 Sirrine Hall, Clemson SC 29634 -1307, USA
						Ph:(off) (864) 656-7537 	Fax: (864) 656-5973
						E-mail: bbhuvan@mail.clemson.edu
						URL : http://hubcap.clemson.edu/~bbhuvan
SKILLS & EXPERIENCE
Research and practical experience
Production of fibers (by High speed melt spinning of fibers), micro-denier fibers, tapes, films, biaxially oriented films, non-woven=
s, etc. 
High Speed melt spinning of PET, N6, N66, N11, Polypropylene, Blends, etc.
Carpet yarns with improved resilence.
Creep-resistant Polypropylene yarns for applications in geotextiles, composites, carpets.
Low pill, easy dyeable, high speed texturisable Polyester.
Improvement of mechanical properties of PET (130 gpd, etc.)
Radially-differentiated structure of PET and its influence on Torsional fatigue properties.
Polypropylene with electret characteristics for applications in filtration, etc.
Hollow Fibers from Poly(vinylidene Fluoride)
Bio-degradable Fibers from PolyCaprolactone
Processing of polymers and inter-relationships with structure and properties
Process simulation tools for processing of polymers.
Mechanical properties of polymers (viscoelasticity, etc.).
Rheology of polymers in shear flow and in extensional flow.
Production of composites reinforced with short-fibers, 3-dimensional textile fabrics, etc. and their directional properties.
Investigation of  processing conditions to develop unique morphological structures in polymers.
Design of machinery for polymer processing (Eg. metering pumps, quench chambers, etc.)
Offered consultancy services to industrial clients: Trained personnel from industry and academic organisations.
Administrative : Handled various administrative responsibilities including overseeing of computerisation -of administrative activiti=
es.
Computer  Proficiency: Extensive computer programming skills (C, Fortran, UNIX, Dos, etc.). Interactive softwares developed for comp=
uter simulation of melt spinning of polymers. Some of these softwares are currently being used by industry. 
EDUCATION
Ph.D. in Fiber Science & Technology, Indian Institute of Technology, New Delhi, India (July 1995).
Research topic for doctoral degree: Some studies on inter-relationships between processing, structure and properties in isotactic po=
lypropylene fibers. 
Master of Technology in Fiber Science & Technology, Indian Institute of Technology, New Delhi, India. C.G.P.A. = 8.9 (December 89).
Bachelor of Engineering in Textile Engineering  from Gulbarga University, Gulbarga, India.  (February 1988 with 78.5% with distincti=
on and with first rank.
AWARDS RECEIVED	:
Ranganatha Memorial Gold medal for First Rank Holder in Final year B.E. (1987).
Precitex award for Best Student in Spinning (1987).
Topped the All India "Graduate Aptitute Test for Engineers" (GATE) (1988). Recepient of GATE scholarship for completion of Master of=
 Technology degree in Fiber Science & Technology.
WORK EXPERIENCE 
[1] Research Associate/Assistant Professor (Post-doctoral position) at School of Textiles, Fiber &                 Polymer Science s=
ince November 1995.
[2] Senior Scientific Officer at Indian Institute of Technology, Delhi. June 1990 to Oct. 1995.
Commisioning, running, maintenance and research activities on  Fourne High Speed Melt Spinning Plant (SST 1207) along with a host of=
 related utilities. Production of various deniers of HDPE, PP, PPCP, N6, N66, N11, PET, etc. at various spinning speeds upto 4000 m/=
min.
PUBLICATIONS
Y.C.Bhuvanesh and V.B.Gupta, "Long-term prediction of creep in textile fibers', Polymer Communications, Vol. 35,  No. 10, p2226 (199=
4).
Y.C.Bhuvanesh and V.B.Gupta, "Computer simulation of melt spinning of  poly(ethylene terephthalate using a steady-state model", Indi=
an Journal of Fiber and Textile research, Vol.15, p145, Dec. (1990).
Rajkumar Verma, Y.C.Bhuvanesh, V.B.Gupta, T.Manabe and Rajesh Jalan, "Some studies on melt flow behaviour of poly(ethylene terephtha=
late)" in Special issue on Recent Advances in Man-made fibers, Indian Journal of Fiber and Textile Research, Vol.16, p39, Mar. (1991=
).
Y.C.Bhuvanesh and V.B.Gupta, "Interaction between viscoelastic and structural relaxation in 	drawn polypropylene yarn", Polymer, Vol=
 36, p3669 (1995)
Y.C.Bhuvanesh and V.B.Gupta, "Computer simulation of melt spinning of  polypropylene fibers using a steady-state model", J. of Appl.=
 Polym. Sci. Vol. 58, No. p663 (1995).
Y.C.Bhuvanesh and V.B.Gupta, "Processibility and properties of  polypropylene containing small amounts of polystyrene", J. of Appl. =
Polym. Sci., Vol 60, p1951 (1996).
V.B.Gupta and Y.C.Bhuvanesh, "Studies on Shrinkage characteristics of yarns made from Polypropylene and Polypropylene containing 5 p=
ercent by weight of Polystyrene", Indian J. of Fiber & Textile Res. (in press).
P.Bajaj, Y.C.Bhuvanesh and A.Bhargava, "Effect of Diffussional rate on the structure and properties of wet spun Acrylonitrile terpol=
ymer protofibers", under preparation for J. of Appl. Polym. Sci.
S.A.Mondal, V.B.Gupta and Y.C.Bhuvanesh, "Relationship between spinning speed and throughput rate during Melt Spinning of some fiber=
 forming polymers", communicated to J. of Appl. Polym. Sci.
Y.C.Bhuvanesh and V.B.Gupta, "Long-term creep behaviour of drawn polypropylene yarn and polypropylene-polystyrene blends", under pre=
paration for J. of Appl Polym Sci.
BOOKS
Contributed to a book entitled "Production, structure and properties of Man-made Fibers", in press, Chapman & Hall, London.
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Subject: Re: Tg of cured epoxies
From: pkyleca@aol.com
Date: 4 Dec 1996 00:39:19 GMT
Whether a transition is easy to find or not- it depends upon the
formulation.  Most epoxies have Tg transitions that are very easy to find
by DSC or TMA.  It all depends upon whether the resin matrix cross-links
to about the same degree of cross linking.  If the degree of crosslinking
varies throughout the matrix, then it is hard to find an 'average' Tg, so
it will be difficult to find.  However, if the system is formulated to
provide a consistent degree of crosslink throughout the structure, then
the Tg will happen simultaneously and be easier to measure analytically.
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Subject: Re: polymer MW unit?
From: ackolbert@aol.com
Date: 4 Dec 1996 00:44:58 GMT
I think they mean Mn, which is a proper "average" in the usual use of the
word.
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Subject: Re: Mold validation
From: cadcammike@aol.com
Date: 4 Dec 1996 00:25:27 GMT
In article <58267b$snn@cronkite.d48.lilly.com>, Bill Morrison
 writes:
>What would be the "industry" practice for validating a mold for
production of
>a
>componet of a medical device ?
One way is to take sample parts off the press and have them laser
digitized, creating 10's of thousands of points in 3D space. From there,
there is software which can compare the points against the original CAD
model data with deviation color plots created.
If interested, I represent a company that provides this service.
--------------------------------------------------------------------------
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EEEEEEEEEEEE            Mike Roberts - President
EEEEEE                         4771 South 99th Street
EEEEEEEEEEEE            Milwaukee, WI 53228
EEEEEEEEEEEE            PH: 414.427.8139
EEEEEE                          FX: 414.427.0092
EEEEEEEEEEEE            Email: cadcammike@aol.com
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Manufacturers Representatives of High-Technology Companies
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-----------------
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Subject: Re: PI application??
From: pkyleca@aol.com
Date: 4 Dec 1996 00:41:02 GMT
Polyimide's excellent temperature and radiation resistance make it an
excellent material for aircraft structure, aerospace components, etc.
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Subject: Re: What is fracture toughness ???
From: condonj@ohsu.edu
Date: Wed, 4 Dec 1996 02:13:00 GMT
In article <329DE4A3.50E9@flory.mit.edu> Peter Mott  writes:
>> I am using compact-tension method to measure K1c data, which is the
>> index of toughness. According some books, I should get several K1c data
>> from one specimen with the same K1c value. but my results have very high
>> deviation ( 20%-50%). I don't know why.
>> 
>> by the way, Can any people tell me where to find touchness data (K1c,
>> G1c) of some polymers
> 
>The experimental scatter in any fracture measurement is typically 
>quite large.  The variations for brittle materials is often several 
>orders of magnitude; for metals, I would guess that factors of two 
>or three are typical.  If your error is only 20%-50%, I would be very 
>happy with that and call it a day.
>For a crosslinked material, such as epoxy, the ability to reproduce the 
>modulus to within 5-10% is very good.  Fracture is considerably more
>sensitive to variations in processing than the modulus.
>Experimental data:  start with IM Ward, "Intro to Mechanical Proper. 
>of Solid Polymers", and check out the references.  Or, try "the
>Encyclopedia of Polymers."
>Peter Mott
We use a singleedge notch fracture toughness test on dental composite filling 
materials. They are a combination of Bis-GMA/TEGDMA polymer resin and fine 
glass filler particles (50-80 wt%). The K1c values range from 1.0-2.0 
MPa*m^0.5. Typically our scatter is from 5 to 15%. the compact tension is a 
harder test to control. We had alot of trouble trying to use it. The only 
advantage is that it requires much less material. 
The test that produces multiple results from a single specimen is the double 
torsion test. Its especially difficult to control. The S.E.N. is the best way 
to go.
John Condon
School of Dentistry
Oregon Health Sciences Univ.
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Subject: Need experimental properties for neat epoxy resin.
From: Kollegal G Manohar
Date: Tue, 3 Dec 1996 23:12:14 -0600
Hello everybody,
	I am interested in experimental stress-strain curves for neat 
epoxy resin subjected to extensional or shear loadings. Does anyone know 
from where I could obtain this?
Thanks in advance,
Manohar Kollegal
kgm1@cec.wustl.edu
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Subject: Re: Congealant for "Latex" dipping wanted
From: Victor Deeb
Date: 4 Dec 1996 04:38:54 GMT
I am a consultant with significant experience in latex compounding, if 
interested e-mail VMDEEB@Ma.ultranet.com for more detailes
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Subject: Re: Congealant for "Latex" dipping wanted
From: Victor Deeb
Date: 4 Dec 1996 04:39:59 GMT
I am a consultant with significant experience in latex compounding, if 
interested e-mail VMDEEB@Ma.ultranet.com for more detailes
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