Abstract
This paper reports on a spectrophotometric method for rapidly determining the reactivity of dissolving pulps. After mercerization and xanthation, the dissolved cellulose fractions in the viscose dope were re-precipitated by acidification. This transmittance/absorbance of fibril suspension was measured by visible spectroscopy, showing a strong linear correlation (R2 = 0.997) between the absorbance at 600 nm and the amount of the regenerated cellulose in the sample; i.e., the pulp reactivity. The results measured by the present method and those of the commonly used modified Fock method were in good agreement, with a relative difference of less than 11 %. In summary, the new method is rapid, simple, practical and suitable for use in determining the reactivity of dissolving pulps in laboratory or industrial applications.
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References
Barba C, Montané D, Rinaudo M, Farriol X (2002) Synthesis and characterization of carboxymethylcelluloses (CMC) from non-wood fibers I. Accessibility of cellulose fibers and CMC synthesis. Cellulose 9:319–326
Christoffersson KE, Sjöström M, Edlund U, Lindgren Å, Dolk M (2002) Reactivity of dissolving pulp: characterisation using chemical properties, NMR spectroscopy and multivariate data analysis. Cellulose 9:159–170
Christov L, Prior B (1993) Xylan removal from dissolving pulp using enzymes of Aureobasidium pullulans. Biotechnol Lett 15:1269–1274
Elg Christoffersson K (2005) Dissolving pulp: multivariate characterisation and analysis of reactivity and spectroscopic properties. Umeå University, Umeå, Sweden
Filpponen I, Argyropoulos DS (2008) Determination of cellulose reactivity by using phosphitylation and quantitative 31P NMR spectroscopy. Ind Eng Chem Res 47(22):8906–8910
Fock W (1959) Eine modifizierte method zur bestimmung der reaktivität von zellstoffen für viskosherstellung. Das Papier 13(3):92–95
He L, Xin L-P, Chai X-S, Li J (2015) A novel method for rapid determination of alpha-cellulose content in dissolving pulps by visible spectroscopy. Cellulose 22:2149–2156
Köpcke V, Ibarra D, Ek M (2008) Increasing accessibility and reactivity of paper grade pulp by enzymatic treatment for use as dissolving pulp. Nord Pulp Pap Res J 23:363–368
Lanieri DB, Olmos GV, Alberini IC, Maximino MG (2014) Rapid estimation of gamma number of viscose by UV spectrophotometry. O Papel: revista mensal de tecnologia em celulose e papel 75:60–65
Petruševska M, Urleb U, Peternel L (2013) Evaluation of the light scattering and the turbidity microtiter plate-based methods for the detection of the excipient-mediated drug precipitation inhibition. Eur J Pharm Biopharm 85:1148–1156
Saka S, Takanashi K (1998) Cellulose triacetate prepared from low-grade hardwood dissolving pulp and its insoluble residues in acetylation mediums. J Appl Polym Sci 67:289–297
Schild G, Sixta H (2011) Sulfur-free dissolving pulps and their application for viscose and lyocell. Cellulose 18:1113–1128
Swinehart D (1962) The beer-lambert law. J Chem Educ 39:333
Tian C (2013) Improvement in the Fock test for determining the reactivity of dissolving pulp. Tappi J 12:21–26
Treiber E, Rehnström J, Ameen C, Kolos F (1962) A small scale laboratory viscose plant for testing rayon grade pulps. Das Papier 16:85–94
Acknowledgments
This study was supported by the team project of State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, China (Grant No. 2015ZD01) for sponsoring the research.
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He, L., Chai, XS. A rapid method for determining the reactivity of dissolving pulps by visible spectroscopy. Cellulose 22, 2851–2857 (2015). https://doi.org/10.1007/s10570-015-0731-y
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DOI: https://doi.org/10.1007/s10570-015-0731-y