DOI: 10.1002/macp.1990.021911027. The laser‐flash‐initiated polymerization as a tool of evaluating (individual) kinetic constants of free‐radical polymerization, 6. The influence of monomer consumption during sample preparation

The laser‐flash‐initiated polymerization as a tool of evaluating (individual) kinetic constants of free‐radical polymerization, 6. The influence of monomer consumption during sample preparation

10.1002/macp.1990.021911027

Crossref journal-article

Wiley

Die Makromolekulare Chemie (311)

Abstract

AbstractThe instantaneous differential molecular weight distribution curves for a polymer prepared under the influence of periodic laser flashes of constant intensity were calculated as a function of conversion and accumulated up to final conversions in the range between 0 and 20%. If these cumulated distributions are subjected to the conventional analysis with respect to the position of the inflection points, which are an excellent measure of kp · [M]t0 (kp = rate constant of chain propagation, [M] = monomer amount concentration, t0 = pulse separation), it is seen that this relationship, the validity of which was originally established in the limit of vanishing conversion, becomes the more deficient the higher is the conversion. This is even so when the initial monomer concentration is replaced by the average monomer concentration over the conversion interval examined. In the latter case, however, the deviations are reasonably small and do not exceed the limits of experimental accuracy in determining the position of the inflection point. Thus the application of this method of calculating kp is justified also for conversions up to at least 20%. The determination of k/t from rate of polymerization and weight‐average degree of polymerization (kt representing the rate constant of mutual chain termination) on the other hand, is completely insensitive towards conversion.

Bibliography

SchnÃ¶llâBitai, I., & Olaj, O. F. (1990). The laserâflashâinitiated polymerization as a tool of evaluating (individual) kinetic constants of freeâradical polymerization, 6. The influence of monomer consumption during sample preparation. Die Makromolekulare Chemie, 191(10), 2491â2499. Portico.

Authors 2

Irene Schnöll‐Bitai (first)
Oskar Friedrich Olaj (additional)

References 15 Referenced 20

{'key': 'e_1_2_1_1_2', 'volume-title': '“The Kinetics of Vinyl Polymerization by Radical Mechanisms”', 'author': 'Bamford C. H.', 'year': '1958'} / “The Kinetics of Vinyl Polymerization by Radical Mechanisms” by Bamford C. H. (1958)
10.1002/pol.1976.170140408
10.1080/00222337708061301
10.1002/macp.1985.021861218
10.1002/macp.1987.021880716
10.1002/apmc.1987.051550115
10.1002/marc.1988.030091110
10.1016/0014-3057(89)90001-3
10.1016/0014-3057(89)90022-0
10.1016/0014-3057(89)90118-3
O. F.Olaj G.Zifferer to be published
10.1039/tf9615700859
{'key': 'e_1_2_1_12_2', 'first-page': '1801', 'volume': '14', 'author': 'Ludwico W. A.', 'year': '1986', 'journal-title': 'J. Polym. Sci., Polym. Chem. Ed.'} / J. Polym. Sci., Polym. Chem. Ed. by Ludwico W. A. (1986)
10.1002/pol.1979.170170622
10.1021/ma00143a003

Dates

Type	When
Created	22 years, 4 months ago (April 16, 2003, 6:05 a.m.)
Deposited	1 year, 10 months ago (Oct. 22, 2023, 4:51 p.m.)
Indexed	1 year, 2 months ago (June 16, 2024, 9:57 a.m.)
Issued	34 years, 11 months ago (Oct. 1, 1990)
Published	34 years, 11 months ago (Oct. 1, 1990)
Published Online	22 years, 5 months ago (March 12, 2003)
Published Print	34 years, 11 months ago (Oct. 1, 1990)

Funders 0

None

BibTeX

@article{Schn_ll_Bitai_1990, title={The laser‐flash‐initiated polymerization as a tool of evaluating (individual) kinetic constants of free‐radical polymerization, 6. The influence of monomer consumption during sample preparation}, volume={191}, ISSN={0025-116X}, url={http://dx.doi.org/10.1002/macp.1990.021911027}, DOI={10.1002/macp.1990.021911027}, number={10}, journal={Die Makromolekulare Chemie}, publisher={Wiley}, author={Schnöll‐Bitai, Irene and Olaj, Oskar Friedrich}, year={1990}, month=oct, pages={2491–2499} }

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