Melt Diffusion in Model Liquid-Crystalline Polymers
{'Code': '03070007', 'Directorate': {'Abbreviation': 'MPS', 'LongName': 'Direct For Mathematical & Physical Scien'}, 'Division': {'Abbreviation': 'DMR', 'LongName': 'Division Of Materials Research'}}
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Forward recoil spectroscopy (FRES) will be used to determine the                concentration profiles of interdiffusing thermotropic, liquid                   crystalline (LC) polymer chains.  The LC polymers synthesized for               this study will be both deuterated and nondeuterated LC                         polyethers with solubility in common solvents and controlled                    molecular weight.  Investigations will concentrate on the                       diffusion behavior of LC polymers of controlled moleluclar weight               diffusing into a matrix film of known molecular weight.                         Diffusion of LC polymer chains in their smectic, nematic, and                   isotropic phases will be studied.  The effect of the degree of                  chain orientation induced by poling in either magnetic or                       electric fields will also be explored for its effect on the LC                  polymer diffusion characteristics.  Collaborations with other                   scientists will help in the characterization of these                           thermotropic polymers using neutron scattering and rheological                  measurements.
{'FirstName': 'Christopher', 'LastName': 'Ober', 'PI_MID_INIT': 'K', 'PI_SUFX_NAME': None, 'PI_FULL_NAME': 'Christopher K Ober', 'EmailAddress': 'cko3@cornell.edu', 'NSF_ID': '000101773', 'StartDate': '05/01/1988', 'EndDate': None, 'RoleCode': 'Principal Investigator'}
{'Name': 'Cornell University', 'CityName': 'ITHACA', 'ZipCode': '148502820', 'PhoneNumber': '6072555014', 'StreetAddress': '341 PINE TREE RD', 'StreetAddress2': None, 'CountryName': 'United States', 'StateName': 'New York', 'StateCode': 'NY', 'CONGRESSDISTRICT': '19', 'CONGRESS_DISTRICT_ORG': 'NY19', 'ORG_UEI_NUM': 'G56PUALJ3KT5', 'ORG_LGL_BUS_NAME': 'CORNELL UNIVERSITY', 'ORG_PRNT_UEI_NUM': None}
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{'Code': '177300', 'Text': 'POLYMERS'}
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