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Molecular-weight changes in the degradation of long-chain polymers
Abstract
The changes in molecular weight of a long-chain polymer (initially of arbitrary molecular-weight distribution) are studied when the main chain is subjected to random fracture, such as occurs when certain polymers are exposed to high-energy radiation. For several distributions studied, all trace of the initial distribution curve is lost after an average of some 3 to 8 main-chain fractures per molecule. For lower degrees of degradation the shape of the curve of weight average against degradation can provide information as to the initial weight average, z average, z + 1 average molecular weights. The initial number-average can be obtained by a method of extrapolation.
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Cited by
The kinetics of cluster fragmentation and depolymerisation
Ziff, R. M., & McGrady, E. D. (1985) · Journal of Physics A: Mathematical and General · doi:10.1088/0305-4470/18/15/026 · Cited by 397
Rejoining of X-ray Induced Breaks in the DNA of Leukaemia Cells
LETT, J. T., CALDWELL, I., DEAN, C. J., & ALEXANDER, P. (1967) · Nature · doi:10.1038/214790a0 · Cited by 306
On the effect of high energy radiation to polymers I. Cross-linking and degradation
Saito, O. (1958) · Journal of the Physical Society of Japan · doi:10.1143/jpsj.13.198 · Cited by 235
Peak, M. J., & Peak, J. G. (1982) · Photochemistry and Photobiology · doi:10.1111/j.1751-1097.1982.tb02628.x · Cited by 117
Metadata
- Authors
- Charlesby, A.
- Venue
- Proceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences
- Publisher
- The Royal Society
- Published
- 1954-06-09
- Volume
- 224
- Issue
- 1156
- Pages
- 120-128
- ISSN
- 0080-4630 (ISSN-L)
- 2053-9169
- OpenAlex
- W2078319426
- Cited by
- 190
- References
- 0
- FWCI
- 4.51
- Type
- journal article
- Language
- en
- Open access
- closed
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- Charlesby, A. (1954). Molecular-weight changes in the degradation of long-chain polymers. Proceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences. https://doi.org/10.1098/rspa.1954.0145
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