INVESTIGATION ON THE OPTICAL BEHAVIOUR OF ACETYLATED AND NON ACETYLATED DORM BAM CMP PULP FOLLOWING AC-CELERATED IRRADIATION AGING

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VEYSI R.; MIRSHOKRAEI SEYED AHMAD

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Journal: IRANIAN JOURNAL OF NATURAL RESOURCES Year:2008 | Volume:61 | Issue:3 Page(s): 751-762

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Title

INVESTIGATION ON THE OPTICAL BEHAVIOUR OF ACETYLATED AND NON ACETYLATED DORM BAM CMP PULP FOLLOWING AC-CELERATED IRRADIATION AGING

Author(s)

VEYSI R. | MIRSHOKRAEI SEYED AHMAD | Issue Writer Certificate

Keywords

ACCELERATED OPTICAL AGINGQ3

ACETIC ANHYDRIDEQ3

CMP PULPQ3

ACETYLATIONQ3

BRIGHTNESS STABILITYQ3

HORN BEAMQ2

Abstract

In this research, HORN BEAM chips were chosen randomly from chips pile at Mazandaran Pulp and Paper Mill and pulped by CMP process at the yield of 85%.Then, one portion of pulp was bleached by using hydrogen peroxide and DTPA as chelating agent and 60 gr/m2 handsheets were made from bleached and unbleached pulp. A number unbleached handsheets were acetylated by using ACETIC ANHYDRIDE at 80°C for 30 and 60 minutes. The hand sheet was irradiated for zero, 10, 20, 30 and 40 hours for accelerated aging. The optical characteristics of the hand sheets were measured before and after optical aging. The results of this study showed that following bleaching and accetylation, absorption coefficient, K/S ratio, opacity, yellowness, greenness and post color (PC) number were decreased, and brightness was increased. Following aging up to 40 hours, all optical Properties (except brightness) were increased. These changes are more tangible up to 20 hours irradiation. Among the handsheets, acetylated handsheets, especially those acetylated for 60 minutes, have better BRIGHTNESS STABILITY and less brightness reversion and therefore better resistance towards optical deterioration.

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APA: Copy

VEYSI, R., & MIRSHOKRAEI, SEYED AHMAD. (2008). INVESTIGATION ON THE OPTICAL BEHAVIOUR OF ACETYLATED AND NON ACETYLATED DORM BAM CMP PULP FOLLOWING AC-CELERATED IRRADIATION AGING. IRANIAN JOURNAL OF NATURAL RESOURCES, 61(3), 751-762. SID. https://sid.ir/paper/23193/en

Vancouver: Copy

VEYSI R., MIRSHOKRAEI SEYED AHMAD. INVESTIGATION ON THE OPTICAL BEHAVIOUR OF ACETYLATED AND NON ACETYLATED DORM BAM CMP PULP FOLLOWING AC-CELERATED IRRADIATION AGING. IRANIAN JOURNAL OF NATURAL RESOURCES[Internet]. 2008;61(3):751-762. Available from: https://sid.ir/paper/23193/en

IEEE: Copy

R. VEYSI, and SEYED AHMAD MIRSHOKRAEI, “INVESTIGATION ON THE OPTICAL BEHAVIOUR OF ACETYLATED AND NON ACETYLATED DORM BAM CMP PULP FOLLOWING AC-CELERATED IRRADIATION AGING,” IRANIAN JOURNAL OF NATURAL RESOURCES, vol. 61, no. 3, pp. 751–762, 2008, [Online]. Available: https://sid.ir/paper/23193/en

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