Abstract
In an effort to find the limit of crystallization of polypropylene, a series of quantitative and semiquantitative DSC experiments at rates up to 10,000 deg/min are described. Even at these fast rates polypropylene crystallized on cooling between 350±15 K and 280±6 K. No “fully amorphous” polypropylene was produced. No initial stage crystallization to the condis state could be proven by quenching after partial crystallization.
Zusammenfassung
Eine Reihe von quantitativen und semiquentitativen DSC-Versuchen mit Aufheizgeschwindigkeiten bis 10000 K/min wurden ausgeführt, um die Grenze der Kristallisation von Polypropylen festzustellen. Sogar bei diesen schnellen Aufheizgeschwindigkeiten kristallisiert Polypropylen beim Abkühlen zwischen 350±15 K und 280±6 K. Kein „völlig amorphes“ Polypropylen wurde erhalten.
Резюме
С целью обнаружения т емпературного преде ла кристаллизации поли пропилена, проведен ряд количес твенных и полуколиче ственных ДСК измерений при скорос тях нагрева до 10 000 К/мин. Даже при таких с коростях полипропил ен при охлаждении кристалл изуется между 350±15 К и 280±6 К. Не было получ ено «полностью аморф ного» полипропилена. Начал ьная стадия кристаллизац ии в конденсированно е состояние не была подтверждена путем быстрого охлаждения частично закристаллизованно го продукта.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
B. Wunderlich, Thermochim. Acta, 83 (1985) 35.
See for example: B. Wunderlich, “The Basis of Thermal Analysis” in “Thermal Characterization of Polymeric Materials.” E. Turi, Ed., Academic Press, New York, NY, 1981.
N. E. Hager, Rev. Sci. Instrum., 43 (1972) 116; Review of Sci. Inst., 35 (1964) 618; J. Polym. Sci., Polym. Symposium, 43 (1973) 77.
E. Hellmuth and B. Wunderlich, J. Appl. Phys., 36 (1965) 3039.
B. Wunderlich, “Differential Thermal Analysis” in “Physical Methods of Chemistry.” Vol. I, Part V, A. Weissberger and B. W. Rossiter, eds, Wiley-Interscience, New York, NY, 1971.
J. Grebowicz, S.-F. Lau and B. Wunderlich, J. Polym. Sci., Symposia 71 (1984) 19.
B. Wunderlich and R. C. Bopp, J. Thermal Anal., 6 (1974) 335.
S. M. Wolpert, A. Weitz and B. Wunderlich, J. Polymer Sci., Part A-2, 9 (1971) 1887.
K. E. Murphy, M. B. Altman and B. Wunderlich, J. Appl. Phys., 48 (1977) 4122.
B. Wunderlich, Macromolecular Physics, Vol. II, Crystal Nucleation, Growth, Annealing, Academic Press, New York, NY, 1976.
G. Natta, M. Peraldo and P. Corradini, Rend. Accad. Naz. Lincei, 24 (1959) 14.
C. C. Hsu and P. H. Geil, Bull. Am. Phys. Soc., 412 (1984).
V. I. Poddubny, V. K. Lavrentyev, V. A. Shevelev, N. V. Mikhailova, A. V. Sidorovich and V. G. Baranov, Polymer Bulletin, 11 (1984) 41.
V. Petracone, C. DeRosa, G. Guerra and A. Tuzi, Makromol. Chem. Rapid Commun., 5 (1984) 631.
C. DeRose, G. Guerra, R. Napolitano, V. Petracone and B. Pirozzi, Eur. Polymer J., 20 (1984) 937.
C. Carfagna, C. DeRosa, G. Guerra and V. Petracone, Polymer, 25 (1984) 1462.
B. Wunderlich and J. Grebowicz, Adv. Polymer Sci., 61/62 (1984) 1.
P. J. Hendra, J. Vile, H. A. Willia, V. Zichy and M. A. Cudby, Polymer, 25 (1984) 785.
P. D. Calvert and T. G. Ryan, Polymer, 25 (1984) 921.
D. C. Bassett and R. H. Olley, Polymer, 25 (1984) 935.
B. Wunderlich, Macromolecular Physics, Vol. III, Crystal Melting, Academic Press, New York, NY, 1980.
Author information
Authors and Affiliations
Additional information
This work was supported in part by a grant of Hercules, Inc. to the ATHAS effort and in part by the Polymers Program of the National Science Foundation (Grant number DMR 8317097). The experimentation was helped by an instrument gift by the Celanese Company.
Rights and permissions
About this article
Cite this article
Wu, Z.Q., Dann, V.L., Cheng, S.Z.D. et al. Fast DSC applied to the crystallization of polypropylene. Journal of Thermal Analysis 34, 105–114 (1988). https://doi.org/10.1007/BF01913377
Received:
Revised:
Issue Date:
DOI: https://doi.org/10.1007/BF01913377