Summary
The enthalpy of fusion of a perfect crystal (ΔHf°) of cellulose acetate was determined in this work. In order to do so, cellulose samples from different sources were heterogeneously acetylated. The cellulose acetate samples were characterized by differential scanning calorimetry (DSC) and wide angle X-ray scattering (WAXS). The diffractograms were deconvoluted into halos and peaks using the Pseudo-Voigt peak function. From these deconvolutions, the hypothesis that best represented the two-phase model was the one in which the amorphous model was represented by the halos at 11° and 21°, considering an ordered amorphous model. The WAXS crystallinities of the samples were then calculated from these values and plotted against the enthalpy of fusion of the materials, and from this relationship the ΔHf° for the cellulose acetate was determined to be 58.8 J/g.
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References
Puleo AC, Paul DR (1989) J of Memb Sci 47:301.
Ott E (ed) (1943) Cellulose and Cellulose Derivatives. Interscience Publishers, Inc., New York.
Sassi J-F, Chanzy H (1995) Cellulose 2:111.
Samios E, Dart RK, Dawkins JV (1997) Polymer 38:3045.
Kong Y, Hay JN (2003) Eur Polym J 39:1721.
Sperling LH (2001) Introduction to Physical Polymer Science 3rd. ed. Willey-Interscience, New York.
Takahashi A, Kawaharada T, Kato T (1979) Polym J 11(8):671.
Flory PJ (1949) J of Chem Phys 17(3):223.
Malm CJ, Mench JW, Kendall DL, Hiatt GD (1951) Ind Eng Chem 43:688.
Sun J, Cabasso I (1991) Macromolecules 24:3603.
Rodrigues Filho GR, da Cruz SF, Campos RI, Pasquini D, Assunção RMN in: Proceedings of the Macromolecules 99, Bath – UK, 1999, PT48.
Bertran MS, Dale BE (1986) J App Polym Sci 32:4241.
Rodrigues Filho G, da Cruz SF, Pasquini D, Cerqueira DA, Prado VS, Assunção RMN (2000) J Memb Sci 177:225.
Cerqueira DA, Rodrigues Filho G, Assunção RMN, in the X International Macromolecular Colloquium, Gramado-RS, Brazil, 2005, P029.
Doyle SE, Pethrick RA (1987) J of App Polym Sci 33:95.
Murthy NS, Correale ST, Minor H (1991) Macromolecules 24:1185.
Miller RL, Boyer RF, Heijboer J (1984) J Polym Sci: Polym Phys 22:2021.
Miller RL, Boyer RF (1984) J Polym Sci: Polym Phys 22:2043
Hindeleh M, Johnson DJ (1978) Polymer 19:27
Malm CJ, Mench JW, Kendall DL, Hiatt GD (1951) Ind Eng Chem 43:684.
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Cerqueira, D., Rodrigues Filho, G. & Assunção, R. A New Value for the Heat of Fusion of a Perfect Crystal of Cellulose Acetate. Polym. Bull. 56, 475–484 (2006). https://doi.org/10.1007/s00289-006-0511-9
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DOI: https://doi.org/10.1007/s00289-006-0511-9