Modification of deinked pulp (DIP) by CMC grafting

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Gholami Barzoki z.; AZADFALLAH M.; IZADYAR S.; ROOHANI M.

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Journal Paper

Paper Information

Journal: Iranian Journal of Wood and Paper Science Research Year:2020 | Volume:34 | Issue:4 (69) Page(s): 475-487

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Information Journal Paper

Title

Modification of deinked pulp (DIP) by CMC grafting

Author(s)

Gholami Barzoki z. | AZADFALLAH M. | IZADYAR S. | ROOHANI M. | Issue Writer Certificate

Keywords

Carboxymethyl celluloseQ1

deinked pulp (DIP)Q1

water retentionQ1

drainage timeQ1

tensile strengthQ2

burst strengthQ2

Abstract

In this research, deinked pulp (DIP) was modified with Carboxymethyl cellulose (CMC) to introduce more charged groups on the surfaces of fibers which may lead to improved strength properties. Modification of the pulp was conducted at mild reaction temperature conditions of 85, 95° C and 120° C at 60 and 90 minutes, and under severe conditions of 120° C for 120 minutes in the presence of calcium chloride as electrolyte. The drainage time, water retention value (WRV), tensile strength, burst strength, brightness and opacity of CMC-modified pulps were measured and compared with corresponding values of blank (untreated) pulp and CMC-treated pulps in conventional treatment. The results indicated that tensile and burst strength of CMC-modified pulps were improved in comparison with unmodified pulps. The behavior of pulps was different in terms of optimum reaction condition. However, no significant changes were observed for optical properties of CMC-modified pulps. water retention value of CMC-modified pulps decreased unexpectedly in some conditions.

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APA: Copy

Gholami Barzoki, z., AZADFALLAH, M., IZADYAR, S., & ROOHANI, M.. (2020). Modification of deinked pulp (DIP) by CMC grafting. IRANIAN JOURNAL OF WOOD AND PAPER SCIENCE RESEARCH, 34(4 (69) ), 475-487. SID. https://sid.ir/paper/393146/en

Vancouver: Copy

Gholami Barzoki z., AZADFALLAH M., IZADYAR S., ROOHANI M.. Modification of deinked pulp (DIP) by CMC grafting. IRANIAN JOURNAL OF WOOD AND PAPER SCIENCE RESEARCH[Internet]. 2020;34(4 (69) ):475-487. Available from: https://sid.ir/paper/393146/en

IEEE: Copy

z. Gholami Barzoki, M. AZADFALLAH, S. IZADYAR, and M. ROOHANI, “Modification of deinked pulp (DIP) by CMC grafting,” IRANIAN JOURNAL OF WOOD AND PAPER SCIENCE RESEARCH, vol. 34, no. 4 (69) , pp. 475–487, 2020, [Online]. Available: https://sid.ir/paper/393146/en

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