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Information Journal Paper

Title

Improvement of wet and dry layer strengths of paper from chemi-mechanical pulp using polyamide epichlorohydrin and cellulose nanofibers vs imported long fiber Kraft pulp

Pages

  627-643

Keywords

Tensile energy absorption (TEA)Q1
Polyamide epichlorohydrin (PAE)Q1
Nanofibrillated Cellulose (NFC)Q1
Chemi-mechanical pulp (CMP)Q1

Abstract

 The wet layer tensile strengths of the paper during production affects the frequency of breaking and its runability in the papermachine. In this study, the possibility of using cellulose nanofibers (NFC) and polyamide epichlorohydrin (PAE) vs imported long fiber kraft pulp (LF) was investigated to improve the wet and dry layer strengths of handsheet papers made from chemi-mechanical pulp (CMP). Strength properties of never-dried wet layer of papers with 35% consistency and air-dried papers were evaluated by pulp suspention and addition of 0 and 20% mineral calcium carbonate, NFC (at 2 levels, 2% and 3%), PAE (at 3 levels, 0. 5%, 0. 7% and 1%) and 20% of LF. Also, the effect of thermal treatments on the wet layer strength of papers containing 3% NFC and 0. 7% PAE at 100 and 130 ° C tempratures was evaluated. Results showed that the addition of NFC together with PAE improves the wet and dry layer strength properties of papers. In the case of wet layers of papers with 35% consistency, the addition of 3% NFC together with 1% PAE increased the tensile absorption energy (TEA) to 85%, although this was not as effective as using 20% LF (117%). In the case of air-dried papers, addition of 3% NFC and 1% PAE improved the papers TEA and tensile strength by 35% and 18%, respectively compairing with the addition of 20% LF. As a result of thermal treatments at 100 and 130 ° C, the tensile strength of dried papers increased to 22 and 22. 5%, respectively compared with the non-thermal treated papers. Overall, due to the positive performance of using NFC and PAE with thermal treatments, the combined use of 3% NFC and 1% PAE in CMP can be replaced by 15% LF to improve wet and dry papers strengths.

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    APA: Copy

    MOUSAVI, S.F., REZAYATI CHARANI, P., MORADIAN, M.H., & Asadpour, G.. (2021). Improvement of wet and dry layer strengths of paper from chemi-mechanical pulp using polyamide epichlorohydrin and cellulose nanofibers vs imported long fiber Kraft pulp. IRANIAN JOURNAL OF WOOD AND PAPER INDUSTRIES, 11(4 ), 627-643. SID. https://sid.ir/paper/378546/en

    Vancouver: Copy

    MOUSAVI S.F., REZAYATI CHARANI P., MORADIAN M.H., Asadpour G.. Improvement of wet and dry layer strengths of paper from chemi-mechanical pulp using polyamide epichlorohydrin and cellulose nanofibers vs imported long fiber Kraft pulp. IRANIAN JOURNAL OF WOOD AND PAPER INDUSTRIES[Internet]. 2021;11(4 ):627-643. Available from: https://sid.ir/paper/378546/en

    IEEE: Copy

    S.F. MOUSAVI, P. REZAYATI CHARANI, M.H. MORADIAN, and G. Asadpour, “Improvement of wet and dry layer strengths of paper from chemi-mechanical pulp using polyamide epichlorohydrin and cellulose nanofibers vs imported long fiber Kraft pulp,” IRANIAN JOURNAL OF WOOD AND PAPER INDUSTRIES, vol. 11, no. 4 , pp. 627–643, 2021, [Online]. Available: https://sid.ir/paper/378546/en

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