Properties of mixture of hemp bast and softwood pulp for filter paper manufacture

The objective of this study was to investigate the morphological and chemical properties of hemp bast RPF1 variety fiber to be used as a potential raw material for filter paper production. Experimental handsheet samples with basis weight of 20 g/m2 were manufactured using mixture of hemp and softwoo...

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Bibliographic Details
Published in:	Heliyon Vol. 10; no. 3; p. e25353
Main Authors:	Yimlamai, Piyawan, Chitbanyong, Korawit, Wanitpinyo, Kapphapaphim, Puangsin, Buapan, Nanta, Kawinthida, Khantayanuwong, Somwang, Pisutpiched, Sawitree, Chaisan, Tanapon, Fei, Binqi, Hiziroglu, Salim
Format:	Journal Article
Language:	English
Published:	England Elsevier Ltd 15-02-2024 Elsevier
Subjects:	Cannabis sativa L Chemical composition Hemp bast fiber Papermaking Soda pulping Hemp bast fiber Chemical composition Cannabis sativa L Papermaking Soda pulping
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Summary:	The objective of this study was to investigate the morphological and chemical properties of hemp bast RPF1 variety fiber to be used as a potential raw material for filter paper production. Experimental handsheet samples with basis weight of 20 g/m2 were manufactured using mixture of hemp and softwood pulp at various beating levels. The average fiber length and width of hemp bast fiber were determined as 5.76 mm and 32.53 μm, respectively. It was also found that the hemp bast fiber had rigid thick cell wall with small size of lumen. The overall chemical properties of hemp bast were similar to those fibers from other bast sources as well as softwood fibers. It seems that hemp bast was easily pulped under various soda process conditions yielding pulp ranging from 51.36 % to 52.56 % and Kappa numbers ranging from 2.89 to 8.18. Based on the findings in this study hemp bast fiber could be considered as a potential to manufacture filter paper with accepted characteristics. [Display omitted] •Hemp bast has been investigated in terms of fiber morphology, chemical composition, soda pulping and handsheet properties for the first time in Thailand.•Hemp bast pulp had high soda pulp yield and low Kappa number.•Filter paper from mixed hemp bast and softwood pulp had good physical properties with accepted air permeability and surface roughness.•Hemp bast can be used as alternative raw materials for filter paper manufacture.
Bibliography:	ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23
ISSN:	2405-8440 2405-8440
DOI:	10.1016/j.heliyon.2024.e25353