Structure evolution of polyamide (11)’s crystalline phase under uniaxial stretching and increasing temperature

ORIGINAL PAPER
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Abstract

Thermal processing of polyamide influences the internal crystalline structure and thereafter the post product mechanical performance. In this article, the crystalline transition of polyamide-11 (PA11) plate under uniaxial stretching and increasing temperature was investigated systematically using in-situ synchrotron X-ray technique. It was discovered that the lamellar slippage, fragmentation and recrystallization occurred in sequence under increasing temperature. In detail, the crystal of PA11 plate was stretched with a transition from triclinic α-form to mesomorphic phase at 25 °C. For the thermally activated γ-form crystals, crystal transition was inhibited when temperature was increased up to 160 °C. The melt-recrystallization was inclined to take place at large tensile strains. This work enhances the research significance of the thermal processing of polyamide and provides a theoretical method to improve the high performance of polyamide products.

Keywords

Polyamide-11 In-situ X-ray scattering Crystal transition Thermal tension mechanism 
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Copyright information

© Springer Science+Business Media Dordrecht 2017

Authors and Affiliations

  1. 1.School of Textiles and ClothingJiangnan UniversityWuxiPeople’s Republic of China
  2. 2.College of Materials Science and EngineeringWuhan Textile UniversityWuhanChina

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