Pre-treatment with calcium hydroxide and accelerated carbonation for cellulosic pulp fibrillation-Reference-Cited by-同舟云学术

Pre-treatment with calcium hydroxide and accelerated carbonation for cellulosic pulp fibrillation

Published:2023-03-24 Issue:2 Volume:38 Page:343-358
ISSN:0283-2631
Container-title:Nordic Pulp & Paper Research Journal
language:en
Short-container-title:

Author:

de Sousa Arantes Lorran¹,Prazeres Mascarenhas Adriano Reis²^ORCID,Scatolino Mário Vanoli³,Denzin Tonoli Gustavo Henrique¹,Mendes Lourival Marin¹,Borges Ianca Oliveira¹,Guimarães Júnior José Benedito¹

Affiliation:

1. Department of Forest Science , Federal University of Lavras (UFLA) , C.P. 3037, 37200-900 , Lavras , MG , Brazil

2. Department of Forest Engineering , Federal University of Rondônia (UNIR) , 76940-000 , Rolim de Moura , RO , Brazil

3. Graduate Program in Development and Environment, Federal University of the Semiarid – (UFERSA) 59625-900 , Mossoró , RN , Brazil

Abstract

Abstract In this study, the effect of different concentrations of calcium hydroxide (Ca(OH)2) was evaluated as a pre-treatment for accelerated carbonation and its influence on the fibrillation of cellulosic pulps to obtain nanofibrils, and its application as a coating agent for papers. Eucalyptus (EUC) and Pine (PIN) unbleached cellulosic fibers were submitted to pre-treatment with Ca(OH)2 at concentrations of 5 and 10% and subjected to accelerated carbonation, being subsequently mechanically fibrillated to produce cellulose nanofibrils (CNF). Pretreatment with calcium hydroxide followed by accelerated carbonation provided a 35% reduction in energy consumption. Cellulosic pulps EUC and PIN pretreated with calcium hydroxide showed higher fibrillation efficiency. There was a reduction in the cobb test values for papers coated with CNF in PIN. The WVP was lower for papers coated with CNF of EUC and control PIN. The CNF coating of EUC and PIN provided an oil barrier for the kit 11 solution. The CNF coating improved the dispersion of PVA and PVOH. The papers coated in this work have the potential to be used as packaging for fatty and oily foods or as a spreading agent for other industrial coatings.

Funder

Graduate Program in Biomaterials Engineering at the Federal University of Lavras (UFLA), the National Council for Scientific and Technological Development

The Research Support Foundation of Minas Gerais

The Research Support Foundation of Amapá

The Lignocellulosic Materials Engineering Research Group (GPEMLIG) at the Federal University of Rondônia (UNIR).

Publisher

Walter de Gruyter GmbH

Subject

General Materials Science,Forestry

Link

https://www.degruyter.com/document/doi/10.1515/npprj-2022-0101/pdf

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