Preparation and Characterization of Surface Modified PPTA Fibers by Ultrasonic-Assisted Hydrogen Peroxide Solutions
- Resource Type
- Article
- Authors
- Zhao Jia; Chunmei Duan
- Source
- Fibers and Polymers, 20(11), pp.2310-2316 Nov, 2019
- Subject
- 섬유공학
- Language
- English
- ISSN
- 1229-9197
The simplest peroxide, hydrogen peroxide (H2O2) was used to prepare the surface modified poly(p-phenyleneterephthalaramide) (PPTA) fibers under the assistant of ultrasonic vibration. Fourier transform infrared spectroscopy (FTIR)spectra indicated the increase of the active polar groups on the surface of the fibers. X-ray photoelectron spectroscopy (XPS)analysis confirmed that more carboxyl groups and hydroxyl groups have been obtained after this treatment. Scanning electronmicroscope (SEM) showed that the surface roughness of the fibers has been improved accordingly. The interfacial propertiesof modified PPTA fiber/epoxy composites were investigated by the single fiber pull-out test (SFP). The results showed thatthe interfacial shear strength (IFSS) of PPTA/epoxy composites was remarkably improved by 42.14 % while the breakingstrength was not affected appreciably. The modified fiber presented 26.9 % higher moisture regain compared with theoriginal fiber. It proved to be an efficient method to make the surface modified PPTA fiber for the application of the advancedcomposites at a relatively low cost.