EFFECT OF THERMAL ACCELERATED AGING OF MIXED HARDWOODS CMP PAPER ON MECHANICAL AND OPTICAL PROPERTIES OF ITS RECYCLED PULP

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KERMANIAN H.; RAHMANINIA MEHDI; RAMEZANI O.; ABDI M.; KH.MADAHI N.

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Journal: Journal of Forest and Wood Products Year:2017 | Volume:69 | Issue:4 Page(s): 821-830

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Title

EFFECT OF THERMAL ACCELERATED AGING OF MIXED HARDWOODS CMP PAPER ON MECHANICAL AND OPTICAL PROPERTIES OF ITS RECYCLED PULP

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Keywords

CHEMICAL MECHANICAL PULPQ1

BRIGHTNESSQ2

WASTE PAPERQ2

THERMAL ACCELERATED AGINGQ1

DEINKINGQ2

MECHANICAL PROPERTIESQ1

Abstract

The old newsprint, as an important grade of WASTE PAPERs, usually has been produced from chemical-mechanical pulp (CMP). Although the effect of paper aging on different properties of recycled pulp has been investigated from long time ago, but, few studies have been observed about the effect of this phenomenon on recycling of CMP paper. In this study, accelerated aging was applied on Hardwood CMP newspaper by 2 levels of temperature (50 and 100oc) and 2 levels of time (24 and 48 hours). Results showed that accelerated aging applying 100oc in 24 and 48 hours (about half of a decade and more) impose an intense reduction tensile strength, burst strength and tear strength indices as well as folding endurance strength of recycled pulp. Also, accelerated aging in 50oc for 24 and 48 hours (about six months until one year) did not show any special effect on mentioned MECHANICAL PROPERTIES. Moreover, THERMAL ACCELERATED AGING didn’t have any significant effect on BRIGHTNESS of deinked CMP pulp. In general, it can be concluded that CMP WASTE PAPERs less than one year old can preserve or even upgrade their MECHANICAL PROPERTIES after recycling, but aging more than half of a year will have detrimental effect on these properties.

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APA: Copy

KERMANIAN, H., RAHMANINIA, MEHDI, RAMEZANI, O., ABDI, M., & KH.MADAHI, N.. (2017). EFFECT OF THERMAL ACCELERATED AGING OF MIXED HARDWOODS CMP PAPER ON MECHANICAL AND OPTICAL PROPERTIES OF ITS RECYCLED PULP. JOURNAL OF FOREST AND WOOD PRODUCTS (JFWP) (IRANIAN JOURNAL OF NATURAL RESOURCES), 69(4), 821-830. SID. https://sid.ir/paper/162781/en

Vancouver: Copy

KERMANIAN H., RAHMANINIA MEHDI, RAMEZANI O., ABDI M., KH.MADAHI N.. EFFECT OF THERMAL ACCELERATED AGING OF MIXED HARDWOODS CMP PAPER ON MECHANICAL AND OPTICAL PROPERTIES OF ITS RECYCLED PULP. JOURNAL OF FOREST AND WOOD PRODUCTS (JFWP) (IRANIAN JOURNAL OF NATURAL RESOURCES)[Internet]. 2017;69(4):821-830. Available from: https://sid.ir/paper/162781/en

IEEE: Copy

H. KERMANIAN, MEHDI RAHMANINIA, O. RAMEZANI, M. ABDI, and N. KH.MADAHI, “EFFECT OF THERMAL ACCELERATED AGING OF MIXED HARDWOODS CMP PAPER ON MECHANICAL AND OPTICAL PROPERTIES OF ITS RECYCLED PULP,” JOURNAL OF FOREST AND WOOD PRODUCTS (JFWP) (IRANIAN JOURNAL OF NATURAL RESOURCES), vol. 69, no. 4, pp. 821–830, 2017, [Online]. Available: https://sid.ir/paper/162781/en

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