Morphology and structure of chain-folded lamellar crystals of nylons 2 22, 4 22, 6 22, 8 22, 10 22, and 12 22

作者：Zhang, GS; Yan, DY^*

来源：Crystal Growth & Design, 2004, 4(2): 383-387.

DOI：10.1021/cg034177r

Chain-folded lamellar crystals of nylons 2 22, 4 22, 6 22, 8 22, 10 22, and 12 22 are grown from 1,4-butanediol solution, and their morphology and crystalline structure are investigated by using transmission electron microscopy (TEM) and wide-angle X-ray diffraction (WAXD). It is found that nylons 4 22, 6 22, 8 22, 10 22, and 12 22 have a similar crystalline structure. All of them crystallize into the triclinic structure of the nylon 6 6 a, phase, and their unit cell parameters are also similar to those of nylon 6 6. On the other hand, nylon 2 22 is special in the crystalline structure compared with other ones. Although nylon 2 22 also adopts the triclinic up phase, its characteristic signals of diffraction are different from other nylons of this series and nylon 6 6, but similar to those of the nylon 2 Y family. Furthermore, its parameters of the unit cell calculated from the experimental data come to the same conclusion.

• 出版日期2004-4
• 单位上海交通大学