Molecular Orientation and Crystalline Structure of Aligned Electrospun Nylon-6 Nanofibers: Effect of Gap Size

作者：Kimura Naotaka; Kim Han Ki; Kim Byoung Suhk^*; Lee Keun Hyung; Kim Ick Soo

来源：Macromolecular Materials and Engineering, 2010, 295(12): 1090-1096.

DOI：10.1002/mame.201000235

• crystal structures
• fibers
• nylon
• orientation
• polyamides

We study the effect of the gap size on the molecular orientation and crystalline structure of uniaxially well-aligned nylon-6 nanofibers produced in the gap between negatively charged metal plates. The relative intensities of several absorbance bands are found to be different in the parallel-and perpendicularly polarized FTIR spectra. X-ray analysis indicates that the metastable g-form is predominant in as-spun nylon-6 nanofibers, and is transformed into the thermodynamically stable alpha-form by increasing the gap size. The polymer chains are thought to be oriented perpendicular to the fiber direction, and the molecular orientation to the fiber axis is enhanced on increasing the gap size.

• 出版日期2010-12-10