| Autor: |
Wang, Xiaochun, Zhang, Liping, Liu, Ming, Zhang, Jianfei, Zhao, Guoliang |
| Zdroj: |
Fibers & Polymers; Dec2021, Vol. 22 Issue 12, p3343-3350, 8p |
| Abstrakt: |
The poor compatibility between a Fe2O3 pigment and a blend of ultrahigh molecular weight polyethylene (UHMWPE)/polyolefin (PO) can result in low spinnability and poor mechanical properties of the resulting fiber. This study modifies the surface of a Fe2O3 pigment with a titanate coupling agent for dope dyeing melt-spun UHMWPE fiber. The effects of the coupling agent dose, reaction temperature and reaction time on the surface properties of the pigments are investigated. In addition, the characteristics of the UHMWPE blend and colored fibers (by dope dyeing with modified and unmodified Fe2O3 pigments) are compared. Notably, 3 wt.% coupling agent in regard to the pigments mass, a coupling agent to toluene mass ratio of 1:5, a reaction time of 30 min, and a reaction temperature of 80 °C achieve the optimal results, which are a 48.4 % lipophilic degree of the modified pigment, a zeta potential of 48.4 mV, and a contact angle of 144.3°. Moreover, SEM images and torque results of the blend melt show that the compatibility between the Fe2O3 pigment and UHMWPE/PO blend is significantly enhanced. With an increasing pigment content, the mechanical properties of the colored fibers decrease, and the K/S values of the colored fibers increase. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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