Evaluating the performance of hemp bast fibres in the production of packaging paper using different …
that were not dissociated completely during the disintegration phase. These observations confirm the problematic nature of using wastepaper as a fibre source. x The colour of the handsheet made of 0% hemp bast fibre was similar to that of wastepaper pulp. Additionally, since the hemp bast fibre pulp has a white colour, increasing the hemp bast fibre ratio lightens the colour of the resultant handsheet. x According to the physical strength test results, CMT, CCT, RCT, SCT, stiffness and tear resistance increase as hemp bast fibre ratio in the paper increases, while breaking length, stretching percentage, bursting strength and air resistance decrease. Overall, it was concluded that in addition to the size of the fibres, the carbohydrate components and the crystalline structure of the hemp bast fibre have an impact on the beating degree and fibrillation, which in turn affects the strength properties. Furthermore, it was determined that some strength properties of the paper increase as others decrease when the hemp bast fibre ratio is increased. The results can be a guide for the pulp and paper industries by showing that the hemp bast fibre pulp can be used in proper blends of wastepaper pulp when it is desired to increase the end product’s (paper) strength values (such as CMT, CCT, RCT, SCT, stiffness or tear resistance) or decrease them (e.g. air resistance) after resolving the fibrillation problem. The conducted experiments and their results lay the groundwork for process optimisation and implementation under industrial conditions in the future. References Ashok Kumar T.N.V., Subash Kumar J. and Vijay Kumar J. [ 2017]: Fabrication and investigation of mechanical properties hemp fibre reinforced polyester composites. Science and Technology 2 [3] Ashori A. [2006]: Nonwood fibres – A potential source of raw material in papermaking. Polymer-Plastics Technology and Engineering 45 Bowyer J.L . [2001]: Industrial hemp as a papermaking raw material in Minesota: technical, economic and environmental considerations] access date 17 June 2019 https://www.votehemp.com/wp-content/uploads/2018/09/hemp.pdf Browning B.L. [1967]: Methods of Wood Chemistry. Vol. II. John Wiley and Sons Inc. New York Cheremisinoff N.P. and Rosenfeld P.E. [2010]: Handbook of Pollution Prevention and Cleaner Production, Elsevier Inc. Chieng B.W., Lee S.H., Ibrahim N.A., Then Y.Y. and Loo Y.Y. [ 2017]: Isolation and characterization of cellulose nanocrystals from oil palm mesocarp fibre. Polymers 9 [355] Danielewicz D. and Surma- Ś lusarska B. [ 2010]: Processing of industrial hemp into papermaking pulps intended for bleaching. Fibres and Textiles in Eastern Europe 18-6 [83]
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