Thermodynamic and other physical properties of several hydrofluoro-compounds
Physicochemical characterization of HFPEs, HFCs, HFEs series has been carried out. Experimental and commercial samples have been evaluated by considering the role of H substitution. Reported here are several physical properties of the following hydrofluoro-compounds: (1) hydrofluoropolyethers (HFPE)...
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Published in | Journal of fluorine chemistry Vol. 118; no. 1; pp. 149 - 155 |
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Main Authors | , , |
Format | Journal Article |
Language | English |
Published |
Elsevier B.V
01.12.2002
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Abstract | Physicochemical characterization of HFPEs, HFCs, HFEs series has been carried out. Experimental and commercial samples have been evaluated by considering the role of H substitution.
Reported here are several physical properties of the following hydrofluoro-compounds: (1) hydrofluoropolyethers (HFPE) of general formulae: HF
2CO(CF
2O)
n
(CF
2CF
2O)
m
CF
2H; (2) an experimental (HFPE) sample: CH
3O(CF
2O)
n
(CF
2CF
2O)
m
CH
3; (3) a linear hydrofluorocarbon (HFC): CF
3CHFCHFCF
2CF
3; a cyclic HFC: c-CF
2CF
2CF
2CHFCH
2; hydrofluoroethers (HFE): C
4F
9OCH
3, C
4F
9OC
2H
5 and C
7F
15OC
2H
5.
The properties of the HFPE series are monotonic functions of molecular weight
M. Some of the properties of the HFC and HFE samples differ substantially from the molecular weight dependence shown by the HFPE series, indicating that the overall number and geometry of the H substitution, as well as the molecular geometry of the sample, could perhaps play some role in the control of physical properties. |
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AbstractList | Physicochemical characterization of HFPEs, HFCs, HFEs series has been carried out. Experimental and commercial samples have been evaluated by considering the role of H substitution.
Reported here are several physical properties of the following hydrofluoro-compounds: (1) hydrofluoropolyethers (HFPE) of general formulae: HF
2CO(CF
2O)
n
(CF
2CF
2O)
m
CF
2H; (2) an experimental (HFPE) sample: CH
3O(CF
2O)
n
(CF
2CF
2O)
m
CH
3; (3) a linear hydrofluorocarbon (HFC): CF
3CHFCHFCF
2CF
3; a cyclic HFC: c-CF
2CF
2CF
2CHFCH
2; hydrofluoroethers (HFE): C
4F
9OCH
3, C
4F
9OC
2H
5 and C
7F
15OC
2H
5.
The properties of the HFPE series are monotonic functions of molecular weight
M. Some of the properties of the HFC and HFE samples differ substantially from the molecular weight dependence shown by the HFPE series, indicating that the overall number and geometry of the H substitution, as well as the molecular geometry of the sample, could perhaps play some role in the control of physical properties. |
Author | Marchionni, G Maccone, P Pezzin, G |
Author_xml | – sequence: 1 givenname: G surname: Marchionni fullname: Marchionni, G email: giuseppe.marchionni@ausimont.com organization: Solvay-Ausimont Research and Development Centre, Viale Lombardia 20, 1 20021 Bollate, Milan, Italy – sequence: 2 givenname: P surname: Maccone fullname: Maccone, P organization: Solvay-Ausimont Research and Development Centre, Viale Lombardia 20, 1 20021 Bollate, Milan, Italy – sequence: 3 givenname: G surname: Pezzin fullname: Pezzin, G organization: Department of Physical Chemistry, University of Padova, Padova, Italy |
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Cites_doi | 10.1016/S0022-1139(98)00297-8 10.1016/S1352-2310(98)00106-X 10.1021/es961010w 10.1016/S0022-1139(99)00085-8 |
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Keywords | Hydrofluoroethers Hydrofluoropolyethers Fluorinated fluids Thermodynamic properties Physical properties Hydrofluorocarbons |
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References | G. Marchionni, P. Srinivasan, in: Proceedings of the Fluoropolymer Conference ’92, UMIST, Manchester, 1992, Paper 14. G. Marchionni, G. Ajroldi, G. Pezzin, in: S.L. Aggarwal, S. Russo (Eds.), Comprehensive Polymer Science, Suppl. II, Pergamon Press, London, 1996. Cavalli, Glasius, Hjorth, Rindone, Jensen (BIB5) 1998; 32 Tuazon (BIB6) 1997; 31 M. Glasius, Master thesis, Odense University, DK, 1995. C. Bruhl, T. Peter, G. Moortgat, D. Boglu, R. Meller, G. Brasseur, I. Isaksen, P. Crutsen, Model studies to ozone depletion potential and greenhouse effect of halogenated hydrocarbons with focus on CFC substitutes, Max Planck Institute fur Chemie, Mainz, 1993. Marchionni, Silvani, Fontana, Malinverno, Visca (BIB1) 1999; 95 Marchionni, Bassi, Fontana, Maccone, Ajroldi (BIB2) 1999; 98 Cavalli (10.1016/S0022-1139(02)00226-9_BIB5) 1998; 32 Tuazon (10.1016/S0022-1139(02)00226-9_BIB6) 1997; 31 Marchionni (10.1016/S0022-1139(02)00226-9_BIB2) 1999; 98 Marchionni (10.1016/S0022-1139(02)00226-9_BIB1) 1999; 95 10.1016/S0022-1139(02)00226-9_BIB3 10.1016/S0022-1139(02)00226-9_BIB4 10.1016/S0022-1139(02)00226-9_BIB7 10.1016/S0022-1139(02)00226-9_BIB8 |
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SubjectTerms | Fluorinated fluids Hydrofluorocarbons Hydrofluoroethers Hydrofluoropolyethers Physical properties Thermodynamic properties |
Title | Thermodynamic and other physical properties of several hydrofluoro-compounds |
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