Size does matter.
Size does matter.
Size does matter.
Size does matter.
Size does matter.
big characterization problems. The traditional chemical
methods--NMR, IR, UV-Vis, single crystal X-ray, and mass
spectroscopy--are often powerless when it comes to structural
determinations of polymers with molecular masses of several tons
per mole. Also, the use of polymers to make macroscopically large
structural assemblies requires special materials characterization
techniques. LSU is among the best-equipped US universities when it comes to
polymer (and colloid) characterization. Responsibility for the equipment
is shared by several units, and these labs follow a "decentralized but
coordinated" model. Equipment is grouped according to purpose and
faculty oversight into three labs, PAL, PEP and ECL.
- Molecular characterization: Polymer Analysis Lab, PAL
- Engineering and Processing: Polymer Engineering and Processing,
- Composites: Engineering Composites Laboratory, ECL
manual and instructional materials are available for some of
the equipment in PAL, PEP and the other facilities.
PAL: Contact Dr. Rafael Cueto (225) 578-2059:
email@example.com or Dr. Paul S. Russo (225) 578-5729:
- Light Scattering (seven instruments, rom custom-built to the latest
- Zeta potential
- Gel Permeation Chromatography & Field Flow Fractionation (6 separate instruments with various
- Optical Microscopy (polarizing and fluorescence, hot stages, rheostage)
- Thermal Analysis (DSC, DTA, DEA)
- Langmuir Blodgett Techniques
- Analytical Ultracentrifugation (in the LSU Peptide Facility)
- MALDI-TOF and Electrospray MS (LSU MS facility)
- Electron Microscopy (in
the M.D. Socolofsky Microscopy Facility)
angle X-ray Scattering
The Polymer Analysis Laboratory
(PAL) serves polymer/biopolymer researchers across the LSU
campus, as well as CAMD users and industrial clients and researchers from
other Louisiana universities. PAL coordinates with other labs
on campus, including especially the Mass Spectroscopy
Facility, the M.D. Socolofsky Microscopy Facility, Textiles
Laboratory and the Peptide Facility. Students have easy
"hands-on" access to almost all PAL facilities.
For polymer analysis at the molecular level, the mass,
size, and aggregation characteristics of polymers may be
characterized on any of three state-of-the-art laser light
scattering systems built to the specifications of the
department in LSU's Scientific Instrumentation Shops.
Distribution of polymer molecular weight can be measured
qualitatively or absolutely on one of three Agilent-Waters-Wyatt GPC
systems equipped with multiangle static light scattering, single-angle
dynamic light scattering, or viscometric detectors. Concentration is sensed
by refractive index or absorption detectors. One can also use a Viscotek TA60 triple detection
system, which combines light scattering and viscometry in a GPC
system. LSU is one of the few universities in the US that can perform
both aqueous and organic separations by asymmetric field flow fractionation,
using the same GPC detectors just mentioned. Does your polymer have too much freedom? Try
constraining it to two dimensions on the NIMA Langmuir Blodget trough, equipped for surface pressure measurement and
production of thin films.
At the supramolecular level, a wide range of equipment is
available. PAL's thermal analysis facility, featuring equipment from TA
Systems, Perkin Elmer and Seiko, includes differential scanning calorimetry (DSC--four
instruments), simultaneous thermogravimetric/differential
thermal analysis (TGA/DTA--two instruments), steady state and
oscillatory thermomechanical analysis (TMA), and dynamic
mechanical spectroscopy (DMS). The DSC's have adequate sensitivity for many polymer solutions, as well as
bulk polymers. Even more sensitive Microcal solution and titration calorimeters are
available. DMS samples can be tested in tension, shear, or bending
using film, fiber, or bulk samples. PAL's
optical microscopy facility is equipped for polarized, Normarski, transmission, and epi-fluorescence illumination,
as well as confocal mode for "optical sectioning"
of materials in three dimensions. Mettler and Linkam temperature control and
shear stages are available. A specially constructed apparatus for
fluorescence photobleaching recovery combines laser illumination and
computer-interfaced photometry to measure diffusion rates in solutions,
gels, melts, and liquid crystals. Film and video cameras interface to two
separate image processing systems.
If all this isn't enough, see our friends! Velocity and
equilibrium analytical ultracentrifugation studies of mass,
size, shape and aggregation can be performed on a Beckman XLA, located in the LSU Peptide Facility. Try your luck at a
really precise molecular weight with Matrix Assisted Laser
Desorption Ionization/Time of Flight Mass Spectroscopy,
located in Chemistry's Mass Spec facility. Or get an
electrifying picture of what's going on in the Socolofsky
Microscopy Facility, where a complementary optical microscopy
facility also exists. Delicate structures, such as complex fluids, can be
viewed in the freeze-fracture facility in yet another electron microscopy
facility. Or try your "hand" on the
Kawabata apparatus in the Textiles Laboratory, one of several
places around campus where tensile and other mechanical testing can be
PEP: Contact Dr. Kerry Dooley (225) 578-3063:
- Fiber Spinning
- Film manufacture
- Injection Molding
- HAAKE RHEOMIX-600: This mixer is equipped with
Roller, Cam, Sigma and Banbury rotors for evaluation of
mixing variables and preparation of laboratory quantities
of polymer blends that require large shearing
- Berstorff Twin Co-rotating Screw Extruder-ZE 25:
This 25mm diameter screw extruder features interchanging
screw elements, segmented barrels and an L/D of 28/1.
Typically this machine is used for preparing laboratory
amounts of polymer blen ds under variable
temperature and shearing conditions.
- Plastimac Co-rotating Twin Screw Extruder: This
38.1mm diameter screw extruder also features
interchanging screw elements, segmented barrels but with
an L/D of 12/1.
- Pilot Scale Continuous Atmospheric Reactor: This is
a single screw reactor used for thermal shearing and
delignification in order to obtain pilot plant quantities
of fibrous materials for woven and non-woven
geotextile mats and products.
- Coextrusion line that is used for obtaining pilot plant
quantities of two polymer melts.
- PHI - Precision Press-TS-21-H-C(4A)-5: This is an
air actuated press with independent heating/ cooling for
each platen. This press provides control of the
closing speed, clamping force and cooling rate.
This press is used to study pr ess cycle variables of
polymeric materials and blends.
- Arburg Allrounder Injection Molding Machine-170 CMD
150-45: This reciprocating unit is used to study
injection moulding variables using laboratory quantities
of materials for low-scale production.
- Hi Tech reaction injection molding machine: This molder
is used for studying the processing variables associated
with production of laboratory quanties of
molded parts derived from a reaction injection molding
process. The current sy stem is set up to produce
polyurethanes that are reinforces with different types of
- Kruss Processor Tensiometer and Single Fiber Measuring
System-K14/K141: This machine is used for
characterizations of contact angle, surface tension,
surface energy, liquid densities as well as absorption
properites and diameters of fibers.
- Bohlin VOR Rheometer: Characterize rheological
properties of polymer and polymer blends under a variety
of stress, strain and flow conditions.
Jasco V570 UV/Vis spectrometer, powder and flow-through attachments.
Contact: Dr. Qinglin Wu at 225-578-8369
- Universal testing machine
- X-ray density profiler
- Injection Molding
- Compression molding presses
- TA Q100 DSC (with refrigeration cooling), Q50 TGA, and
Q800 DMA (with liquid nitrogen cooling) for polymer based research.
- Thermo-Cahn 320 Dynamic Contact Angle (DCA) analyzer
for surface energy study for polymer materials.
- TA Instrument 2990 micro-thermal analyzer: This
machine is based on combined AFM and DSC technology for studying interfacial
properties in polymer composite materials.
- QMS QDP-01X
X-ray density profiler: This is a
computerized X-ray–based profiling device for determining density
distribution in composite materials.
- Instron Model
5582 universal testing machine: This testing machine is equipped with a 100
KN loading frame, three load cells (100 KN, 30 KN, 1 KN), Bluehill 2
material testing software, various grips/fixtures, and advanced video
extensometer for polymer material testing.
- CW Brabender Intelli-torque mixer/torque rheometer/twin
screw extruder: The machine (2006 model) is equipped with a small
three-piece mixer, and a large prep-mixer for evaluation of mixing variables
and preparation of laboratory quantities of polymer blends that require
large shearing forces; and a Mark II twin-screw extruder with two feeders,
strand and sheet dies, and pelletizer for small-scale extrusion formulation
- Battenfeld 35-ton plus injection molding machine (2006
model) with fully automated control options and various molds for polymer
- Leistriz Model Micro-27 Extruder: This 27mm hi-speed
intermeshing twin screw extruder (2007 model) has a unique mode convertible
design (co-rotation to counter-rotation). It is equipped with a 15-HP main
drive motor, segmented screws on high torque splined shafts, modular barrel
design (10 barrels at 4:1 L/D each), closed-loop water cooling, vacuum
system, two weight-in-loss feeders and one side stuffer, and automated
computer control system. The machine is suitable for a pilot-scale extrusion
- Wabash MPI 200H-24-BCPX Compression Molding Press:
This press has 200 ton compression force, and 24”x24” platen size. It has
automatic platen air and water cooling options.
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