Akademik Veri Yönetim Sistemi
17. INTERNATIONAL İSTANBUL SCIENTIFIC RESEARCH CONGRESS, İstanbul, Türkiye, 28 - 29 Eylül 2025, ss.11, (Özet Bildiri)
This study examines hemp fibers, one
of the sustainable, ecological, and natural regenerated cellulose fibers. This
study aims to evaluate hemp fibers for cellulose-based carbon fiber production
and to demonstrate the effect of chemical impregnation of raw hemp fiber with a
mixture of 4% diammonium phosphate (DAP) and 4% boric acid (BA) on its
oxidative structure to accelerate the heat treatment (oxidation) phase. In the
post-chemical impregnation oxidation process, temperatures of 175, 200, 225,
250, 275, and 300 °C were studied in an oxygen environment for 30 minutes at
different temperatures. Post-oxidation characterization was conducted to
investigate changes in fiber thickness, count, and color at different
temperatures. DSC and TGA analyses were conducted to understand the thermal
characteristics. As the oxidation temperature increased, fiber thickness and
yarn count decreased, and color changes from white to black were observed. DSC
studies revealed that the decomposition peak in the samples decreased with
increasing temperature and completely disappeared at 300°C. TGA studies
calculated that the carbonization yield at 700°C increased with increasing
oxidation temperature, with the highest carbonization yield (approximately 22%)
occurring in the sample at 300°C.