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- W3208023604 abstract "Abstract The world demand for paper has been increased due to the increasing population Therefore, to cop up the limited wood fiber resources introducing raw material in pulp and paper industries is necessary. The aims of this study to evaluate the pulp and paper-making properties of Caesalpinia decapetela based on proximate chemical composition, fiber morphology, pulping, bleaching, and physical test of the final product. The results proximate chemical analysis showed that C. decapetela has holocellulose content of 78.14±0.1 % and lignin content 18.0±0.04 %. Fiber morphology revealed that the fibers were 0.708 mm long, 18.63 μm width, and have 5.1 μm cell wall thicknesses. Kraft pulping of C. decapetale , was performed at different active alkali (5 %, 10 %, 15 %, 20 % and 25 %) and temperature (150, 160 and 170 °C), keeping the sulphidity 25 % constant. The pulp maximum yield 44.1 % was obtained at active alkali content of 15 %, temperature 160 °C, and cooking time 90 minutes. The effect of pulping on fiber morphology was studied using scanning electron microscopy which showed the surface of fiber before pulping was tight, orderly arranged and the texture was relatively hard. After pulping, there was the removal of lignin, hemicellulose, and cellulose. Due to this fiber become soft loosened and contain micro-pores. Pulp produced was bleached, sheet preparation and testing were performed. The prepared paper sheets have a tensile index of 28.19 Nm/gm, burst index of <m:math xmlns:m=http://www.w3.org/1998/Math/MathML> <m:mn>1.359</m:mn> <m:mspace width=0.1667em /> <m:mtext>kPa</m:mtext> <m:mspace width=0.1667em /> <m:msup> <m:mrow> <m:mtext>m</m:mtext> </m:mrow> <m:mrow> <m:mn>2</m:mn> </m:mrow> </m:msup> <m:mo mathvariant=normal stretchy=false>/</m:mo> <m:mtext>gm</m:mtext> </m:math> 1.359hspace{0.1667em}text{kPa}hspace{0.1667em}{text{m}^{2}}/text{gm} , and tear indices of <m:math xmlns:m=http://www.w3.org/1998/Math/MathML> <m:mn>4.2</m:mn> <m:mspace width=0.1667em /> <m:mtext>mN</m:mtext> <m:mspace width=0.1667em /> <m:msup> <m:mrow> <m:mtext>m</m:mtext> </m:mrow> <m:mrow> <m:mn>2</m:mn> </m:mrow> </m:msup> <m:mo mathvariant=normal stretchy=false>/</m:mo> <m:mtext>gm</m:mtext> </m:math> 4.2hspace{0.1667em}text{mN}hspace{0.1667em}{text{m}^{2}}/text{gm} . This study concluded C. decapetale can be the new raw material for pulp and paper making industries. However, pilot plant studies are required to check this raw material for the full recommendation of the pulp and paper industries." @default.
- W3208023604 created "2021-11-08" @default.
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- W3208023604 date "2021-11-04" @default.
- W3208023604 modified "2023-10-16" @default.
- W3208023604 title "Evaluation of pulp and paper making properties of <i>Caesalpinia decapetela</i>" @default.
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- W3208023604 doi "https://doi.org/10.1515/npprj-2021-0001" @default.
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