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Dependence of slow crack growth in polyethylene on butyl branch density: Morphology and theory
Abstract
A theoretical equation has been developed to described the rate of slow crack growth in an ethylene‐hexene copolymer in terms of the basic morphological parameters. These parameters are spacing of the butyl branches, number of tie molecules, and the thickness of the lamellar crystal. Experimentally, the thickness of the lamellae and the long period were determined as functions of the branch density. The calculation of the number of tie molecules is based on the values of the molecular weight and the long period. The model of slow crack growth is based on the rate of disentanglement of the tie molecules. The rate of disentanglement varies inversely with the number of tie molecules and directly with the number of tie molecules that are not pinned by the branches.
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Cited by
Gahleitner, M. (2001) · Progress in Polymer Science · doi:10.1016/s0079-6700(01)00011-9 · Cited by 278
New Insight on Initiation of Cavitation in Semicrystalline Polymers: In-Situ SAXS Measurements
Humbert, S., Lame, O., Chenal, J. M., Rochas, C., & Vigier, G. (2010) · Macromolecules · doi:10.1021/ma101042d · Cited by 176
DesLauriers, P. J., & Rohlfing, D. C. (2009) · Macromolecular Symposia · doi:10.1002/masy.200950814 · Cited by 57
Mukherjee, P., Ghosh, A., Spegazzini, N., Lamborn, M. J., Monwar, M. M., DesLauriers, P. J., & Bhargava, R. (2018) · Macromolecules · doi:10.1021/acs.macromol.8b00363 · Cited by 18
Metadata
- Authors
- Huang, Y., & Brown, N.
- Venue
- Journal of Polymer Science Part B: Polymer Physics
- Publisher
- Wiley
- Published
- 1991-01
- Volume
- 29
- Issue
- 1
- Pages
- 129-137
- ISSN
- 0887-6266 (ISSN-L)
- 1099-0488
- OpenAlex
- W2052055865
- Cited by
- 310
- References
- 0
- FWCI
- 10.96
- Type
- journal article
- Language
- en
- Open access
- closed
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- CoChat. (2026). Citation check: Dependence of slow crack growth in polyethylene on butyl branch density: Morphology and theory. https://app.cochat.ai/papers/10.1002/polb.1991.090290116
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- Huang, Y., & Brown, N. (1991). Dependence of slow crack growth in polyethylene on butyl branch density: Morphology and theory. Journal of Polymer Science Part B: Polymer Physics. https://doi.org/10.1002/polb.1991.090290116
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