Citation: Ying Lu, Yong-Feng Men. Initiation, Development and Stabilization of Cavities during Tensile Deformation of Semicrystalline Polymers[J]. Chinese Journal of Polymer Science, ;2018, 36(10): 1195-1199. doi: 10.1007/s10118-018-2123-x shu

Initiation, Development and Stabilization of Cavities during Tensile Deformation of Semicrystalline Polymers

Ying Lu ¹ ,
Yong-Feng Men ^1,2,,

a.
State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
b.
University of Science and Technology of China, Hefei 230026, China

Corresponding author: Yong-Feng Men, men@ciac.ac.cn
Received Date: 10 January 2018
Revised Date: 10 January 2018
Accepted Date: 5 February 2018
Available Online: 21 March 2018

By using polybutene-1 as a typical example, we illustrate the initiation, development and stabilization of cavities in the sample during tensile deformation. Samples with the same crystallinity, long spacing and crystalline lamellar thickness but very different sizes of spherulites were prepared via changing the melt history. Dimension of cavities during stretching the samples was determined by in situ ultra small angle X-ray scattering techniques. It turned out that the size of the cavities was bigger in the sample with larger spherulites than the one with smaller spherulites. The results show clear evidence of initiating cavities within crystalline phase at the grain-boundary of crystalline blocks, growing of cavities passing through parallel stacked lamellar crystals and amorphous layers and finally stablized by tilted lamellae at both ends of the plate-like cavities within the spherulites.
- Cavitation,
- Deformation,
- Polymer,
- Polubutene-1,
- Spherulite
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