在再生纸浆中添加纳米纤维素的两种情况下模拟纸板生产的工业过程

IF 1.5 4区 农林科学 Q2 Agricultural and Biological Sciences
Nanci Vanesa Ehman, Yanina Susel Aguerre, María Evangelina Vallejos, Fernando Esteban Felissia, María Cristina Area
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引用次数: 0

摘要

本研究评估了纳米纤维素在纸板原料中的掺入,模拟了工业过程的两种情况。它包括生产170克/平方米的纸板,使用从回收纸浆中提取的短纤维和长纤维馏分的混合物和典型的工厂添加剂。在所有情况下,3 wt. %的纳米纤维素被添加到纸浆悬浮液中。第一种情况是在78%的长纤维/ 22%的短纤维纸浆中加入三种纳米纤维素。第二种方案包括在未经提炼的长纤维纸浆中添加两种纳米纤维素,以生产多层纸板。对疏水时间和疏水材料的物理力学性能进行了评价。纳米纤维素改善了所有情况下的机械性能。在情景1中,拉伸和破裂指数分别增加了19%和28%,在情景2中分别增加了60%和43%。方案1中较低的机械性能值归因于保留系统的影响。采用高电荷密度阳离子聚合物的新型截留体系可减少高达79%的排液时间。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Nanocellulose addition to recycled pulps in two scenarios emulating industrial processes for the production of paperboard
This study assesses the incorporation of nanocellulose in a paperboard feedstock emulating two scenarios of industrial processes. It included the production of 170 g/m2 paperboard, using mixtures of short-fiber and long-fiber fractions from recycled pulps with typical mill additives. In all cases, 3 wt. % of nanocellulose was added to the pulp suspensions. The first scenario involved three types of nanocellulose addition in a mixture of 78 % long-fiber/22 % short-fiber pulps. The second scenario included the addition of two types of nanocellulose to an unrefined long fiber pulp to produce a multilayer paperboard. Drainage time and physical-mechanical properties of the handsheets were evaluated. Nanocellulose improved the mechanical properties in all cases. The tensile and burst indexes increased 19 % and 28 % in Scenario 1 and up to 60 % and 43 % in Scenario 2, respectively. The lower values in mechanical properties for Scenario 1 were attributed to the effect of the retention system. A new retention system using a cationic polymer with a high charge density produced decreases up to 79 % in the drainage time.
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来源期刊
Maderas-Ciencia Y Tecnologia
Maderas-Ciencia Y Tecnologia MATERIALS SCIENCE, PAPER & WOOD-
CiteScore
2.80
自引率
13.30%
发文量
33
审稿时长
>12 weeks
期刊介绍: Maderas-Cienc Tecnol publishes inedits and original research articles in Spanish and English. The contributions for their publication should be unpublished and the journal is reserved all the rights of reproduction of the content of the same ones. All the articles are subjected to evaluation to the Publishing Committee or external consultants. At least two reviewers under double blind system. Previous acceptance of the Publishing Committee, summaries of thesis of Magíster and Doctorate are also published, technical opinions, revision of books and reports of congresses, related with the Science and the Technology of the Wood. The journal have not articles processing and submission charges.
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