Abstract
In this account, we report our findings on blends of cellulose acetate having a degree of substitution (DS) of 2.49 (CA2.5) with a cellulose acetate having a DS of 2.06 (CA2.0). This blend system was examined over the composition range of 0–100% CA2.0 employing both solvent casting of films (no plasticizer) and thermal processing (melt-compressed films and injection molding) using poly(ethylene glycol) as a common plasticizer. All thermally processed blends were optically clear and showed no loss in optical quality after storage for several months. Thermal analysis and measurement of physical properties indicate that blends in the middle composition range are partially miscible, while those at the ends of the composition range are miscible. We suggest that the miscibility of these cellulose acetate blends is influenced primarily by the monomer composition of the copolymers. Bench-scale simulated municipal composting confirmed the biodestructability of these blends and indicated that incorporation of a plasticizer accelerated the composting rates of the blends.In vitro aerobic biodegradation testing involving radiochemical labeling conclusively demonstrated that both the lower DS CA2.0 and the plasticizer significantly enhanced the biodegradation of the more highly substituted CA2.5.
Similar content being viewed by others
Explore related subjects
Discover the latest articles, news and stories from top researchers in related subjects.References
C. M. Buchanan, K. J. Edgar, J. A. Hyatt, and A. K. Wilson (1991)Macromolecules 24, 3050.
C. M. Buchanan, K. J. Edgar, and A. K. Wilson (1991)Macromolecules 24, 3060.
C. M. Buchanan, S. C. Gedon, A. W. White, and M. D. Wood (1992)Macromolecules 25, 7373.
M. Scandola, G. Ceccorulli, and M. Pizzoli (1992)Macromolecules 25, 6441.
D. R. Paul and S. Newman (1978)Polymer Blends, Vol. 1, Academic Press, New York.
C. M. Buchanan, S. C. Gedon, B. G. Pearcy, A. W. White, and M. D. Wood (1993)Macromolecules 26, 5704.
C. M. Buchanan, S. C. Gedon, A. W. White, and M. D. Wood (1993)Macromolecules 26, 2963.
A. W. White, C. M. Buchanan, B. G. Pearcy, and M. D. Wood (1994)J Appl. Polym. Sci. 52, 525.
G. Ceccorulli, M. Pizzoli, and M. Scandola (1993)Macromolecules 26, 6722.
Petersen (1969)Polym. Prepr. Am. Chem. Soc. Div. Polym. Chem. 10, 385.
D. Kashdan (1989) U.S. patent 4,795,641.
G. L. Slonimskii (1958)J. Polym. Sci. 30, 625.
C. M. Buchanan, R. M. Gardner, and R. J. Komarek (1993)J. Appl. Polym. Sci. 47, 1709–1719.
R. J. Komarek, R. M. Gardner, C. M. Buchanan, and S. C. Gedon (1993)J. Appl. Polym. Sci. 50, 1739–1746.
C. J. Rivard, W. S. Adney, M. E. Himmel, D. J. Mitchell, T. B. Vinzant, K. Grohmann, L. Moens, and H. Chum (1992)Appl. Biochem. Biotech. 34/35, 725–736.
R. M. Gardner, C. M. Buchanan, R. J. Komarek, D. D. Dorschel, C. Boggs, and A. W. White (1994)J. Appl. Polym. Sci. 52, 1477–1488.
J.-D. Gu, M. Gada, G. Kharas, D. Eberiel, S. P. McCarthy, and R. A. Gross, (1992)J. Am. Chem. Soc. Polym. Prep. 351.
J.-D. Gu, D. Eberiel, S. P. McCarthy, and R. A. Gross (1993)J. Environ. Polym. Degrad. 1, 143–153.
R. A. Gross, J.-D. Gu, D. T. Eberiel, M. Nelson, and S. P. McCarthy (1993) in D. Kaplan, E. Thomas, and C. Ching (Eds.),Fundamentals of Biodegradable Materials and Packaging, Technomic, Lancaster, PA.
C. M. Buchanan, R. M. Gardner, R. J. Komarek, S. C. Gedon, and A. W. White (1993) in D. Kaplan, E. Thomas, and C. Ching (Eds.),Fundamentals of Biodegradable Materials and Packaging, Technomic, Lancaster, PA, pp. 133–410.
J.-D. Gu, D. Eberiel, S. P. McCarthy, and R. A. Gross (1993)J. Environ. Polym. Degrad. 4, 281.
J.-D. Gu, D. Eberiel, S. P. McCarthy, and R. A. Gross (1993)J. Environ. Polym. Degrad 4, 293.
J. M. Mayer, G. R. Elion, C. M. Buchanan, B. K. Sullivan, S. D. Pratt, and D. L. Kaplan (1995)J. Macromol. Sci. Pure Appl. Polym. Chem. A32(4), 775–786.
C. M. Buchanan, D. D. Dorschel, R. M. Gardner, R. J. Komarek, and A. W. White (1995)J. Macromol. Sci. Pure Appl. Polym. Chem. A32(4), 683–697.
C. M. Buchanan, C. Boggs, D. D. Dorschel, R. M. Gardner, T. Watterson, and A. W. White (1995)J. Environ. Polym. Degrad. 3, 1.
T. Floyd (1993)J. Chromatogr. 629, 243.
L. A. Wood (1958)J. Polym. Sci. 28, 319.
H. T. Clarke and C. J. Malm (1932) U.S. Patent 1.880,808.
E. J. Bourne, M. Stacey, J. C. Tatlow, and J. M. Tedder (1949)J. Chem. Soc. 2976–2979.
Author information
Authors and Affiliations
Additional information
While this work was in progress, Robert Gardner was struck with cancer and died on June 6, 1995. This paper is dedicated to his memory and to his contributions as a friend and colleague.
Rights and permissions
About this article
Cite this article
Buchanan, C.M., Dorschel, D., Gardner, R.M. et al. The influence of degree of substitution on blend miscibility and biodegradation of cellulose acetate blends. J Environ Polym Degr 4, 179–195 (1996). https://doi.org/10.1007/BF02067452
Issue Date:
DOI: https://doi.org/10.1007/BF02067452