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The dependence of butyl branch density on slow crack growth in polyethylene: Kinetics by Yan-Ling Huang; Norman Brown is a Materials Science article available to read on EtoBox.
What is The dependence of butyl branch density on slow crack growth in polyethylene: Kinetics about?
## Abstract When the density of n‐butyl branches in an ethylene–hexene copolymer increases from 0 to 4.6 butyls/1000 C, the rate of slow crack growth decreases by a factor of 10^4^ . The activation energy for the process is nearly independent of branch density and is about 120 kJ/mol. It is the number of tie molecules and whether they are pinned that control the rate of crack growth which involves the disentanglement of the fibrils in the craze. Branching increases the number of tie molecules by decreasing the lamella thickness, while the branches pin some of the tie molecules to prevent them from sliding through the crystal or other points of entanglement.
Who reads The dependence of butyl branch density on slow crack growth in polyethylene: Kinetics?
It is typically read by researchers, students, and practitioners in Materials Science.
- Author
- Yan-Ling Huang; Norman Brown
- Publisher
- John Wiley and Sons; Wiley (John Wiley & Sons); John Wiley & Sons Inc.; Wiley (ISSN 0887-6266)
- Published
- 1990
- Language
- EN
- Field
- Materials Science (Physical Sciences)