PAPERMAKING PROPERTIES OF CARPINUS BETULUS WITH KRAFT, SODA AND SODA-UREA PULPING PROCESSES

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DOROSTAN R.; ZABIHZADEH S.M.; NAZARNEZHAD N.

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Journal: IRANIAN JOURNAL OF WOOD AND PAPER INDUSTRIES Year:2013 | Volume:3 | Issue:2 Page(s): 105-117

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Information Journal Paper

Title

PAPERMAKING PROPERTIES OF CARPINUS BETULUS WITH KRAFT, SODA AND SODA-UREA PULPING PROCESSES

Author(s)

DOROSTAN R. | ZABIHZADEH S.M. | NAZARNEZHAD N. | Issue Writer Certificate

Keywords

CARPINUS BETULUSQ3

KRAFTQ2

SODAQ2

SODA- UREAQ2

MECHANICAL PROPERTIESQ2

BRIGHTNESSQ2

Abstract

This research was carried out in order to comparatively investigate the hornbeam KRAFT, SODA and SODA-urea papermaking properties. The selected treatment in KRAFT process had an average yield of 44.43% and kappa number of 23.75. In SODA process the selected treatment had an average yield of 38.75% and kappa number of 19.28. In SODA-urea process, the selected treatments had an average yield of 39.85, 40.1, 40.5, 39.8 and 40.61 and kappa number of 21.21, 22.33, 22.66, 25.28 and 26.85. After refining the selected pulp to reach the freeness of 40025 ml CSF, 60 g/m2 handsheets were made and physical, mechanical and optical properties were measured. Results showed that KRAFT pulps had higher yield and better refinability than SODA and SODA-urea pulps. Papers made from KRAFT process had higher strength properties than those made of SODA and SODA-urea process. With addition of urea, yield and kappa number of pulps increased. The highest improvement in tensile index, breaking length and tear index was achieved with addition of 3% urea and the highest improvement in burst index was achieved with adding 4% urea. Results of BRIGHTNESS measurements showed that papers from KRAFT and SODA processes had the lowest and highest BRIGHTNESS degree respectively. With the addition of urea, BRIGHTNESS of papers decreased.

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APA: Copy

DOROSTAN, R., ZABIHZADEH, S.M., & NAZARNEZHAD, N.. (2013). PAPERMAKING PROPERTIES OF CARPINUS BETULUS WITH KRAFT, SODA AND SODA-UREA PULPING PROCESSES. IRANIAN JOURNAL OF WOOD AND PAPER INDUSTRIES, 3(2), 105-117. SID. https://sid.ir/paper/184228/en

Vancouver: Copy

DOROSTAN R., ZABIHZADEH S.M., NAZARNEZHAD N.. PAPERMAKING PROPERTIES OF CARPINUS BETULUS WITH KRAFT, SODA AND SODA-UREA PULPING PROCESSES. IRANIAN JOURNAL OF WOOD AND PAPER INDUSTRIES[Internet]. 2013;3(2):105-117. Available from: https://sid.ir/paper/184228/en

IEEE: Copy

R. DOROSTAN, S.M. ZABIHZADEH, and N. NAZARNEZHAD, “PAPERMAKING PROPERTIES OF CARPINUS BETULUS WITH KRAFT, SODA AND SODA-UREA PULPING PROCESSES,” IRANIAN JOURNAL OF WOOD AND PAPER INDUSTRIES, vol. 3, no. 2, pp. 105–117, 2013, [Online]. Available: https://sid.ir/paper/184228/en

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