Journal of Textile Research ›› 2019, Vol. 40 ›› Issue (04): 21-25.doi: 10.13475/j.fzxb.20180402705

• Fiber Materials • Previous Articles     Next Articles

Preparation and performance of easy cationic dye-modified polyester by solid-phase polycondensation

XIANG Guodong, GAO Qingwen, DENG Qianqian, ZHANG Xuzhen, WANG Xiuhua()   

  1. Laboratory of National Local and Joint Engineering of Textile Fiber Materials and Processing Technology,Zhejiang Sci-Tech University, Hangzhou, Zhejiang 310018, China
  • Received:2018-04-13 Revised:2018-12-28 Online:2019-04-15 Published:2019-04-16
  • Contact: WANG Xiuhua E-mail:wxiuhua@126.com

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Abstract:

In order to improve mechanical properties of easy cationic dye-modified polyester(ECDP) fiber, a method for improving the intrinsic viscosity of the slices was proposed. ECDP slices prepared by melt polycondensation as raw material were tackified by solid-phase polycondensation to obtain tackified slices. Ubbelohde viscometer, differential scanning calorimeter, X-ray diffractometer, fluorescence spectrometer, and thermogravimetric analyzer were employed to investigate the properties of ECDP slices. The results show that the optimum solid phase tackifying process conditions for ECDP slices are temperature of 190 ℃ and time of 9 h. The intrinsic viscosity of ECDP slices increases with the reaction temperature or reaction time, and the intrinsic viscosity is linear with the square root of time. The intrinsic viscosity of the slices tackified at 190 ℃ for 9 h is 0.69 dL/g. Under the conditions of higher than the reaction temperature or longer than the time, the surface of ECDP starts to become yellow due to thermal degradation.

Key words: easy cationic dye-modified polyester, solid-phase polycondensation, intrinsic viscosity, thermal degradation property

CLC Number: 

  • O631.11

Fig.1

Solid-phase polycondensation device"

Fig.2

Relationship between ECDP intrinsic viscosity and reaction time and temperature"

Fig.3

Effect of t and solid-phase polycondensation on intrinisic viscosity of ECDP at different reaction temperature"

Fig.4

DSC heating curves of ECDP after 12 h treated at different reaction temperatures"

Fig.5

DSC heating curves of ECDP with increasing reaction time at 190 ℃"

Fig.6

TG curves of ECDP after treated for 12 h at different reaction temperatures"

Fig.7

XRD patterns of ECDP at different reaction temperatures"

Fig.8

Fluorescence emission spectra of ECDP before and after solid-phase polycondensation at different temperatures"

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