Morphology and properties of nylon 6-polyoxypropylene-nylon 6 block copolymers

Jen Long Yeh, Jen Feng Kuo, Chuh Yung Chen

研究成果: Article同行評審

12 引文 斯高帕斯(Scopus)


The morphology and mechanical properties of nylon 6-polyoxypropylene (POP)-nylon 6 block copolymers as functions of POP content were studied using infrared spectrophotometry, electron microscopy, X-ray diffraction, reheometric measurement and impact testing. The copolymers exhibit a unique morphology having spherulites with feather-like texture, containing POP-rich amorphous domains; the texture varies with POP content. The spherulite is presumed to consist of lamellae, nylon-rich amorphous domains between lamellae and POP-rich amorphous domains outside the interlamellar region. The crystal structure of the copolymers is mainly α-form with a relative shift of hydrogen-bonded sheets in the crystal unit cell. In the dynamic damping spectra, multiple transitions appear in the α-transition range of nylon 6. One is due to the conventional transition of nylon segments, another is due to POP-hydrogen bonded nylon segments. The impact strength is better than that of pure nylon 6 and increases with decrease of POP content. The area of indent zones in the fractured surface change in the same manner as the change of impact strength and POP domain size with POP content. The size and distribution of the POP-rich domains in the spherulites is suggested to be a governing factor for the morphology and properties of the nylon block copolymers.

頁(從 - 到)161-169
期刊Materials Chemistry and Physics
出版狀態Published - 1994 三月

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics

指紋 深入研究「Morphology and properties of nylon 6-polyoxypropylene-nylon 6 block copolymers」主題。共同形成了獨特的指紋。