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Effect of POSS on crystalline transitions and physical properties of polyamide 12

journal contribution
posted on 14.09.2016 by Chaoying Wan, Feng Zhao, Xujin Bao, Balasubramanian Kandasubramanian, Matthew P. Duggan
Polyamide 12/Trisilanolphenyl-POSS (PA 12/POSS) composites were prepared via melt-compounding. The effect of polyhedral oligomeric silsesquioxane (POSS) on crystalline structure and crystalline transition of PA 12 was investigated by wide-angle X-ray diffraction (WAXD) and real time fourier transform infrared spectroscopy (FTIR). WAXD results indicated that PA 12 crystallized into γ-form as slowly cooling from melt and the presence of POSS did not influence the crystalline structure of PA 12. Both PA 12 and PA 12/POSS composites underwent Brill transitions when they were heated from room temperature to melt point. Real time FTIR patterns showed that an absorption band at 697 cm−1 ascribed to Amide V (α) mode was emerged along with the disappearance of Amide VI (γ) band at 628 cm−1 with the increase of the temperature for PA 12 and PA 12/POSS composites, which suggested that the γ-form crystalline has transformed into α form. The Brill bands were identified and the transformed mechanism was discussed based on the real FTIR results. The addition of POSS enhanced the tensile strength and thermal stability of PA 12.

Funding

The authors gratefully acknowledge the financial support of National Natural Science Foundation of China (50803035) and theUKDepartment of Trade and Industry/ Technology Stategy Board.

History

School

  • Aeronautical, Automotive, Chemical and Materials Engineering

Department

  • Materials

Published in

Journal of Polymer Science Part B - Polymer Physics

Volume

47

Issue

(2)

Pages

121 - 129

Citation

WAN, C. ... et al., 2009. Effect of POSS on crystalline transitions and physical properties of polyamide 12. Journal of Polymer Science. Part B, Polymer Physics, 47 (2), pp.121-129.

Publisher

© Wiley Periodicals

Version

VoR (Version of Record)

Publisher statement

This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/

Publication date

2009

Notes

Closed access.

ISSN

0887-6266

eISSN

1099-0488

Language

en

Exports