DOI: 10.1002/macp.1969.021280111. The structural effects of annealing time and temperature on the paracrystal‐crystal transition in isotactic polypropylene

The structural effects of annealing time and temperature on the paracrystal‐crystal transition in isotactic polypropylene

10.1002/macp.1969.021280111

Crossref journal-article

Wiley

Die Makromolekulare Chemie (311)

Abstract

AbstractThe influence of different annealing treatments on the crystalline order of isotactic paracrystalline polypropylene is described.The result support an intramolecular transformation mechanism based on a rewinding of hellcal segments of different lengths having opposite senses of spiralization. Such a mechanism is in agreement with the annealing time dependence of a particular order parameter and is sensitive to the temperature and not to the annealing time once the saturation order value is reached. This saturation phenomenon occurs very quickly at the higher temperatures.

Bibliography

Zannetti, R., Celotti, G., Fichera, A., & Francesconi, R. (1969). The structural effects of annealing time and temperature on the paracrystalâcrystal transition in isotactic polypropylene. Die Makromolekulare Chemie, 128(1), 137â142. Portico.

Authors 4

Roberto Zannetti (first)
Giancarlo Celotti (additional)
Annamaria Fichera (additional)
Romolo Francesconi (additional)

References 11 Referenced 125

10.1016/0014-3057(68)90029-3
{'issue': '8', 'key': 'e_1_2_1_2_2', 'first-page': '207', 'volume': '9', 'author': 'Zannetti R.', 'year': '1969', 'journal-title': 'Atti Accad. Naz. Lincei (Memorie)'} / Atti Accad. Naz. Lincei (Memorie) by Zannetti R. (1969)
10.1002/macp.1961.020500107
{'issue': '8', 'key': 'e_1_2_1_4_2', 'first-page': '14', 'volume': '26', 'author': 'Natta G.', 'year': '1959', 'journal-title': 'Rend. Accad. Naz. Lincei'} / Rend. Accad. Naz. Lincei by Natta G. (1959)
10.1016/0032-3861(60)90021-5
10.1002/pol.1962.1206217307
{'key': 'e_1_2_1_7_2', 'first-page': '29', 'volume': '4', 'author': 'Gailey J. A.', 'year': '1964', 'journal-title': 'SPE Trans.'} / SPE Trans. by Gailey J. A. (1964)
{'key': 'e_1_2_1_8_2', 'first-page': '452', 'volume': '97', 'author': 'Zannetti R.', 'year': '1967', 'journal-title': 'Gazz. chim. ital.'} / Gazz. chim. ital. by Zannetti R. (1967)
{'key': 'e_1_2_1_9_2', 'first-page': '263', 'volume': '1', 'author': 'Natta G.', 'year': '1963', 'journal-title': 'Corsi e Seminari di Chimica del C.N.R.'} / Corsi e Seminari di Chimica del C.N.R. by Natta G. (1963)
{'key': 'e_1_2_1_10_2', 'first-page': '1 and ff', 'volume-title': 'The Stereochemistry of Macromolecules', 'author': 'Corradini P.', 'year': '1968'} / The Stereochemistry of Macromolecules by Corradini P. (1968)
R.Zannetti G.Celotti andA.Fichera paper to be presented before the VIII Congress of the International Union of Crystallography Stony Brook (N.Y.) August1969.

Dates

Type	When
Created	22 years, 4 months ago (April 15, 2003, 7:01 p.m.)
Deposited	1 year, 10 months ago (Oct. 16, 2023, 5:43 a.m.)
Indexed	3 months, 1 week ago (May 21, 2025, 2:44 p.m.)
Issued	55 years, 10 months ago (Oct. 17, 1969)
Published	55 years, 10 months ago (Oct. 17, 1969)
Published Online	22 years, 5 months ago (March 12, 2003)
Published Print	55 years, 10 months ago (Oct. 17, 1969)

Funders 0

None

BibTeX

@article{Zannetti_1969, title={The structural effects of annealing time and temperature on the paracrystal‐crystal transition in isotactic polypropylene}, volume={128}, ISSN={0025-116X}, url={http://dx.doi.org/10.1002/macp.1969.021280111}, DOI={10.1002/macp.1969.021280111}, number={1}, journal={Die Makromolekulare Chemie}, publisher={Wiley}, author={Zannetti, Roberto and Celotti, Giancarlo and Fichera, Annamaria and Francesconi, Romolo}, year={1969}, month=oct, pages={137–142} }

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