Paola Taddei, Masuhiro Tsukada and Giuliano Freddi Affinity of protein fibres towards sulfation Journal of Raman Spectroscopy 44
Wool, B. mori and Tussah silk fibres were treated with chlorosulfonic acid in pyridine and investigated by IR and Raman spectroscopies as well as mechanical measurements. The reactivity towards sulfation decreased along the series: wool > B. mori silk > Tussah silk. Weight gain, spectroscopic and mechanical data are discussed in relation to the difference in fibre morphology, structure and crystallinity. The results obtained appeared promising in view of widening the biomedical utility of natural polymers as biomaterials.
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