Supercritical Fractionation of Crystalline Polymers Near the Upper Critical End Point (Expedited Award)
{'Code': '07020000', 'Directorate': {'Abbreviation': 'ENG', 'LongName': 'Directorate For Engineering'}, 'Division': {'Abbreviation': 'CBET', 'LongName': 'Div Of Chem, Bioeng, Env, & Transp Sys'}}
{'SignBlockName': 'Robert M. Wellek', 'PO_EMAI': None, 'PO_PHON': None}
The efficient fractionation of crystalline polymers should be possible          near the upper critical end point (UCEP) which, for a sharp polymer             fraction, is connected to the triple point (melting point) of the               polymer by a three-phase line along which solid-liquid-gas equilibrium          exists.  By operating at temperatures slightly below that of the UCEP,          such fractionation can be performed under conditions where                      solid-supercritical fluid equilibrium exists.  The advantages                   associated with supercritical fluid extraction (SFE) should therefore           be gained.  The fractionation and relevant phase equilibrium near the           UCEP are to be studied for the system polyethylene-n-propane at about           100-140oC and 400-600 bar.  Under these conditions, fractionation               induced by differences in molecular weight, as well as in                       microstructural irregularity (short-chain branching), is expected to            occur.
{'FirstName': 'Paul', 'LastName': 'Ehrlich', 'PI_MID_INIT': None, 'PI_SUFX_NAME': None, 'PI_FULL_NAME': 'Paul Ehrlich', 'EmailAddress': 'stein@ecs.umass.edu', 'NSF_ID': '000174032', 'StartDate': '09/01/1986', 'EndDate': None, 'RoleCode': 'Principal Investigator'}
{'Name': 'SUNY at Buffalo', 'CityName': 'AMHERST', 'ZipCode': '142282577', 'PhoneNumber': '7166452634', 'StreetAddress': '520 LEE ENTRANCE STE 211', 'StreetAddress2': None, 'CountryName': 'United States', 'StateName': 'New York', 'StateCode': 'NY', 'CONGRESSDISTRICT': '26', 'CONGRESS_DISTRICT_ORG': 'NY26', 'ORG_UEI_NUM': 'LMCJKRFW5R81', 'ORG_LGL_BUS_NAME': 'RESEARCH FOUNDATION FOR THE STATE UNIVERSITY OF NEW YORK, THE', 'ORG_PRNT_UEI_NUM': 'GMZUKXFDJMA9'}
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{'Code': '1414', 'Text': 'INTERFAC PROCESSES & THERMODYN'}
{'url': 'https://www.nsf.gov/awardsearch/download?DownloadFileName=1986&All=true', 'xml': '8612694.xml'}