Scattering Studies of Polymer Deformation in Flowing        Solutions
{'Code': '03070007', 'Directorate': {'Abbreviation': 'MPS', 'LongName': 'Direct For Mathematical & Physical Scien'}, 'Division': {'Abbreviation': 'DMR', 'LongName': 'Division Of Materials Research'}}
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This research will employ light scattering to examine the               conformations of flexible polymers in flowing solution.  Emphasis               will center on extensional flows, which can greatly perturb                     Gaussian polymer chains from their equilibrium, spherical shape.                Despite its importance to many industrial processes in which                    macromolecules are stretched in flow, polymer structure away from               equilibrium is still not well understood.  Dilute solutions will                be examined using low.angle light scattering, and low.angle                     neutron scattering will be attempted for semidilute and                         moderately concentrated solutions.  In addition to steady                       measurements, a new flow device will make possible study of the                 transient stretching of flexible macromolecules in Lagrangian                   unsteady flows.  Unsteady flows are typically found in such                     commercial applications as fiber spinning, and have been made                   difficult to examine systematically with conventional methods.                  The results of the proposed research will provide more direct,                  and less ambiguous, measurements of polymer conformation than can               be obtained by other techniques.
{'FirstName': 'David', 'LastName': 'Hoagland', 'PI_MID_INIT': 'A', 'PI_SUFX_NAME': None, 'PI_FULL_NAME': 'David A Hoagland', 'EmailAddress': 'hoagland@mail.pse.umass.edu', 'NSF_ID': '000459164', 'StartDate': '06/01/1987', 'EndDate': None, 'RoleCode': 'Principal Investigator'}
{'Name': 'University of Massachusetts Amherst', 'CityName': 'AMHERST', 'ZipCode': '010039252', 'PhoneNumber': '4135450698', 'StreetAddress': '101 COMMONWEALTH AVE', 'StreetAddress2': None, 'CountryName': 'United States', 'StateName': 'Massachusetts', 'StateCode': 'MA', 'CONGRESSDISTRICT': '02', 'CONGRESS_DISTRICT_ORG': 'MA02', 'ORG_UEI_NUM': 'VGJHK59NMPK9', 'ORG_LGL_BUS_NAME': 'UNIVERSITY OF MASSACHUSETTS', 'ORG_PRNT_UEI_NUM': 'VGJHK59NMPK9'}
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{'Code': '1773', 'Text': 'POLYMERS'}
{'url': 'https://www.nsf.gov/awardsearch/download?DownloadFileName=1986&All=true', 'xml': '8618534.xml'}