An Eco-Friendly Surface Modification Method of Para-Aramid by Supercritical CO2
Source abstract
Abstract
The structures and properties of para-aramid yarn were investigated under different treatment temperatures from 80 °C to 200 °C with supercritical CO2 and air, respectively, which were observed by Scanning electron microscopy (SEM), Dynamic wetting measurements, Fourier transform infrared spectrometry (FT-IR), X-ray diffraction (XRD), and Thermogravimetric instrument (TG). It is confirmed that the surface morphology of para-aramid yarn was changed remarkably with the supercritical CO2 treatment temperature increasing compared to untreated yarn and treated with air, and the oligomers and disaggregates of yarn were migrated to the yarn surface. Furthermore, the water contact angle of para-aramid was reduced significantly from 136.22° to 91.37° with supercritical CO2 treatment at 200 °C, and the wettability was improved. Overall, supercritical CO2 modification for para-aramid has been proved to be feasible.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Polymer Foaming and Composites · Carbon dioxide utilization in catalysis · Polymer crystallization and properties
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Liaoning Provincial Key Laboratory of Supercritical CO_{2} Dyeing, Dalian Polytechnic University
College of Clothing and Textile, Eastern Liaoning University
References (33)
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