Effect of Processing Parameters on Morphology and Mechanical Properties of Hollow Gel-Spun Lignin/Graphene Oxide/Poly(Vinyl Alcohol)Fibers

• 作者: JIN Yanhong HU Wenxin CHENG Yu LIN Jiaxian YANG Xiaona JING Yuanyuan ZHANG Kun LU Chunhong
• 来源期刊: 东华大学学报（英文版）
• 年，卷（期）: 2021,（1）
• 所属期刊栏目: Flexible Electronics
• 页码范围: 14-21
• 页数: 8页
• 分类号: TS151
• 语种: 英文
• DOI: 10.19884/j.1672-5220.202011099

摘要

To investigate the influence of various processing parameters on the mechanical properties of fibers,lignin/graphene oxide(GO)/poly(vinyl alcohol)(PVA)fibers with different mass ratios of lignin and GO to PVA were prepared by gel spinning technique.Air drawing process and spinneret diameters were tuned as the main factors.The tensile strength increased up to 472 MPa with air drawing process applied in 30L0.05GO0.72D-A PVA fibers(air-drawn PVA fibers reinforced by 30％lignin and 0.05％GO spun with a spinneret diameter of 0.72 mm),indicating 17.4％higher than that of the fiber without air drawing process(402 MPa).Similarly,at least a 14.6％increase in Young's modulus has been achieved for 30L0.05GO0.72D-A fiber.In addition,a smaller spinneret diameter(0.72 mm)also led to a 24.9％increase in tensile strength and a 7.7％increase in Young's modulus in comparison with those of 5L0.05GO0.84D-A fibers.