Crystallization Behaviors of Polyethylene Oxide Fibers Surface-modified by Ethyl Cellulose
As the environment-friendly and a good biocompatible polymer material, it has been widely used in medicine, paper and printing, agriculture, chemicals and textile and other industries. The PEO fibers were prepared by melt spinning at 40 million molecular weight in the paper. The microscopic morphology of the fibers was studied. After the PEO fibers were surface-modified with ethyl cellulose, the isothermal and non-isothermal crystallization of the PEO fibers were discussed. The isothermal crystallization behaviors of the PEO fibers before and after surface-modified were studied by the methods of differential scanning calorimetry (DSC) and hot stage polarized light microscopy (HSPOM). The results showed that there appeared a different turning point in the Avrami curves when the fiber radius of less than 90 μm. Kinetic analysis results show that the crystal growth pattern has changed. DSC method was used to research the non-isothermat crystallization process of the normal PEO fiber and the surface-modified PEO fiber. There kinetic parameter such as the cooling degree (ΔTc), crystallization peak width at half maximum (D1/2), crystallization fast time (tmax), crystallization half-time (t1/2) were studied, the results showed that the fiber is more easily crystalline after the fiber were surface-modified, and the crystallization rate is also greater than the normal PEO fibers.
polyethylene oxide (PEO) fiber crystallization surface modification
DONG Zhi-zhi WANG Shu-guang ZHANG Zhi-ying CHEN Li
Tianjin Key Laboratory of Fiber Modification and Functional Fiber, School of Materials Science and E Beijing Tongyizhong Specialty Fiber Technology & Development Co., LYD, Sinotex Investment & Developm
国际会议
2010 International Forum on Biomedical Textile Materials(2010国际纺织生物医用论坛)
上海
英文
271-274
2010-05-28（万方平台首次上网日期，不代表论文的发表时间）