Outstanding performance of natural camel hair has attracted much attention on the effective use of such specialty fiber to apparel\ntextiles. In this paper, sodium bisulfide (SB) and lithium bromide (LB) solutions were used to process the camel guard hair before\nits slenderization. It is found that camel guard hair processed by SB solution shows the highest breaking elongation (âË?¼140%) due\nto the breakage of disulfide bonds (reflected by Raman spectra). LB ions result in the disruption of hair crystalline phase with\nslight benefit to the slenderization (determined by X-ray diffraction and differential scanning calorimetry). IR spectra indicate that\nhydrogen bonds of camel guard hair act as fixation switch in the programmed tensile test. It is discovered that guard hair reveals the\nbest water-induced shape memory with 90% of stretching shape recovery, whereas the value remained to be 70% and 60% for hair\nprocessed by LB and SB solutions after breaking partial crystalline phase and disulfide cross-links separately (polymer net-points).\nThe poorer shape memory of processed guard hair benefits its slenderization for more stable fixation of stretched length.
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