Please use this identifier to cite or link to this item: http://hdl.handle.net/10316/87391
Title: Enzymatic nanocellulose in papermaking – The key role as filler flocculant and strengthening agent
Authors: Lourenço, Ana F.
Gamelas, José A.F.
Sarmento, Pedro
Ferreira, Paulo Jorge Tavares 
Keywords: Enzymes; Filler retention; Nanocellulose; Papermaking; Paper strength
Issue Date: 15-Nov-2019
Publisher: Elsevier
Volume: 224
Abstract: Nanocelluloses have been increasingly used in composites since their reduced size, high aspect ratio and stiffness confer great strength to the materials. In papermaking, it has been proved that harsh and expensive chemical pre-treatments to generate nanofibrils, such as TEMPO-mediated oxidation, are not the most favourable and therefore the use of cellulose microfibrils (CMF) have gained extra attention, especially those produced with the aid of enzymatic hydrolysis. In the present work, strategies to improve filler flocculation and the papermaking properties, by using enzymatic CMF, are provided. The CMF degree of polymerization was found to be directly related to precipitated calcium carbonate flocculation, leading to higher retentions in the fibre matrix. Besides, the paper dry and wet strengths were much improved, allowing in return the production of high-filler loaded handsheets with reduced requirements for common paper additives.
URI: http://hdl.handle.net/10316/87391
ISSN: 01448617
DOI: 10.1016/j.carbpol.2019.115200
Rights: embargoedAccess
Appears in Collections:FCTUC Eng.Química - Artigos em Revistas Internacionais

Files in This Item:
File Description SizeFormat
1-s2.0-S0144861719308677-main.pdf835.83 kBAdobe PDFView/Open
Show full item record

SCOPUSTM   
Citations

4
checked on May 29, 2020

WEB OF SCIENCETM
Citations 10

14
checked on Jun 2, 2021

Page view(s)

133
checked on Jun 8, 2021

Download(s)

82
checked on Jun 8, 2021

Google ScholarTM

Check

Altmetric

Altmetric


This item is licensed under a Creative Commons License Creative Commons