期刊
JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS
卷 56, 期 22, 页码 1513-1520出版社
WILEY
DOI: 10.1002/polb.24739
关键词
glass transition; orientation; polyamides; viscoelastic properties
资金
- JSPS [16H04201]
We investigated the effects of lithium bromide (LiBr) on the structure and properties of polyamide 6 (PA6). The strong ion-dipole interactions between lithium cations and the amide groups in PA6 greatly increased the glass transition temperature (T-g) and retarded the crystallization rate of PA6. As a result, compression-molded PA6 blends were highly transparent and had high T-g values. The rheological terminal region was obvious in the blends because the ion-dipole interactions weakened at high temperatures. This indicates that the melt processability was barely affected by LiBr. We also evaluated the optical anisotropy of the polymer to determine its suitability as a functional optical film. We found that hot-stretched blend films had large positive orientation birefringence with significantly weak wavelength dispersion, which can be attributed to the enhanced anisotropic polarizability of PA6. We also found that the stress-optical coefficient in the glassy region decreased with increasing LiBr content. (c) 2018 Wiley Periodicals, Inc. J. Polym. Sci., Part B: Polym. Phys. 2018, 56, 1513-1520
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据