MULTI-WAVELENGTH LIGHT SCATTERING DETECTOR

Award Information
Agency:
National Science Foundation
Branch
n/a
Amount:
$49,480.00
Award Year:
1993
Program:
SBIR
Phase:
Phase I
Contract:
n/a
Award Id:
21597
Agency Tracking Number:
21597
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
15600 W Hardy Rd, Houston, TX, 77060
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
n/a
Principal Investigator:
Wallace W Yau
(713) 445-5966
Business Contact:
() -
Research Institution:
n/a
Abstract
LIGHT SCATTERING (LS) IS ONE OF THE MOST COMMON TECHNIQUES FOR POLYMER CHARACTERIZATION. THE LS INTENSITY AND ITS ANGULAR DISSYMMETRY ARE THE TWO EXPERIMENTAL RESULTS THAT GIVE THE POLYMER MOLECULAR WEIGHT (MW) AND MOLECULAR SIZE (RADIUS-OF-GYRATION RG) INFORMATION RESPECTIVELY. WHEN A MULTI-ANGLE LS DETECTOR IS COUPLED WITH A SIZE EXCLUSION CHROMATOGRAPH (SEC), THE COMBINED INSTRUMENT HAS THE POTENTIAL OF DETERMINING THE ABSOLUTE MW AND RG DISTRIBUTION OF POLYMERS. IN GENERAL, THE EXISTING LS INSTRUMENTS ARE EXPENSIVE, BULKY, AND LACK PRECISION. RESEARCHERS ARE TESTING A NEW CONCEPT FOR A HIGH PRECISION LS INSTRUMENT THAT IS SMALL, SIMPLE, AND INEXPENSIVE. A MULTI-WAVELENGTH FEATURE IS BEING INCORPORATED INTO THE RIGHT ANGLE LASER LS (RALLS) TECHNOLOGY. THE COMBINATION OF A MULTI-WAVELENGTH RALLS DETECTOR WITH SEC IS A VERY POWERFUL POLYMER CHARACTERIZATION TECHNIQUE. THIS NEW APPROACH CAN PROVIDE THE NEEDED ACCURACY AND PRECISION IN THE MW AND RG DETERMINATIONS FOR SOLVING INDUSTRIAL PROBLEMS THAT MAY RELATE TO POLYMER SIZE AND SHAPE CHANGES, CHAIN BRANCHING, COPOLYMER COMPOSITION, OR BIOPOLYMER CONFORMATIONAL AND ARCHITECTURAL DIFFERENCES.

* information listed above is at the time of submission.

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