Abstract
The procedure of holocellulose content determination in non-wood plant raw materials was developed. The strength properties of pulp obtained from sunflower stalks by neutral-sulphite, soda, alkaline sulphite-anthraquinone-ethanol and peracetic methods of delignification were studied. Methodology of comparison of plant materials delignification methods using new lignin-carbohydrate diagram was proposed. It was shown, that the alkaline sulphite-anthraquinone-ethanol method of pulping is characterized by the highest delignification degree and is the most efficient among the studied methods
Highlights
Living standards improvement requires increase in quality and quantity of consumer goods, in particular paper and paperboard
For the countries with limited free timber resources non-wood plant raw materials are used in order to increase pulp and paper production [1,2,3]
In order to compare dependencies of yield from residual lignin content in wheat straw pulp obtained by alkaline sulphiteanthraquinone-ethanol (ASAE), peracetic, ester (CH3COOH:CH3COOC2H5:H2O= =33:33:33 v. %) and acetic (CH3COOH:H2O = 75:25 v. %) methods were shown in the Fig. 3
Summary
Living standards improvement requires increase in quality and quantity of consumer goods, in particular paper and paperboard. 3. The aim of the study the aim of this study is to obtain and compare yield, residual lignin content, strength properties of resulting pulps, to determinate delignification degree, construction and analysis of new lignin-carbohydrate diagram for different sunflower stalks delignification methods to determine a more efficient one.
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