Spinning of the solutions of poly(vinyl alcohol)/NaCl/H2O systems and their fiber properties |
| |
Authors: | K Yamaura T Katoh K Koezuka M Iwaseya Lixing Dai |
| |
Affiliation: | (1) Faculty of Textile Science and Technology, Shinshu University, Tokida 3-15-1, Ueda-city, Nagano-prefecture, 386-8567, Japan;(2) Department of Polymeric Materials, College of Materials Engineering, Soochow University, 178 East Ganjiang Road, Suzhou, Jiangsu, 215021, People's Republic of China |
| |
Abstract: | The NaCl/water solutions of commercial poly(vinyl alcohol) (a-PVA) with the degrees of polymerization and saponification of 1730 and 99.39%, respectively were gel-spun into methanol (–30°C) and then the removed NaCl dry-filaments were drawn at 200°C. The draw ratio showed the maximum at NaCl concentration C
N = 3 wt% (polymer concentration C
P = 150 kg/m3). The Young's modulus and strength at break were 95 and 6 GPa ( = 19). In the case of DMSO system (C
P = 170 kg/m3), the Young's modulus was 52 GPa ( = 25) and the strength at break was 3.3 GPa. Under a polarized microscope, the fine lateral structure was observed for the DMSO system, but not for the NaCl system, that is, the smooth structure was recognized. The smooth structure, like a Netlon packing net for oranges, might be considered to result in heightening of mechanical properties. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|