Optical sensor for the measurement of molecular orientation and viscosity of polymeric materials based on fluorescence radiation
US5151748A · kind A · utility
7Cited by
7References
7Claims
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Key dates
| Filing date | Aug 7, 1990 |
| Grant date | Sep 29, 1992 |
| Priority date | — |
| Expiry date | Aug 7, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2021/6439
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method of measuring fluid properties of a polymer melt, undergoing shear and/or extensional flow which utilizes fluorescent anisotropy. The method utilizes a polymeric chromophore which includes a bifunctional anthracene that is covalently bonded to polybutadiene. The invention also involves an optical probe which is designed to be inserted into existing temperature and/or pressure probe ports in processing equipment. The probe includes a rotatable polarizer and emission collection fibers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.