Fluorescent labling methods by rhodamine B isothiocyanate in cellulose Materials

Document Type : Research Paper

Authors

1 Wood and paper Science and Technology Department, Tarbiat Modares, university

2 Wood and Paper Science and Technology Department, Natural Resources Faculty, Tarbiat Modares University, Noor, Mazandaran,Iran

10.22034/ijwp.2023.703799

Abstract

Staining with fluorescent materials is one of the widely used methods in studying and locating cellulosic materials. In this study, the staining of cellulosic materials was investigated by two approaches as direct (direct addition of fluorescent labelling agent) and indirect (adding fluorescent label after creating an anchor) methods; then the staining results were compared. The results showed that although imaging was possible in both methods, indirect staining provided relatively more uniform and effective image results during this investigation. The results showed although fluorescent imaging was possible following both methods, the use of indirect staining method provided relatively better and cleaner image results during this investigation. Moreover, the effect of each staining method on the surface charge property (zeta potential of nanofibers) and wet-end interactions (via freeness testing as an indicator) were studied. The results showed that the (negative) zeta potential of cellulose material became more negative as a result of staining following both staining methods. It was also observed that the staining of the cellulose material by both methods did not affect the freeness as an indicator.

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