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Preparation and evaluation of high-lignin content cellulose nanofibrils from eucalyptus pulp
KTH, Skolan för kemi, bioteknologi och hälsa (CBH), Fiber- och polymerteknologi.
SCG Packaging Publ Co Ltd, Prod & Technol Dev Ctr, Ban Pong 70110, Ratchaburi, Thailand..
KTH, Skolan för kemi, bioteknologi och hälsa (CBH), Fiber- och polymerteknologi. KTH, Skolan för kemi, bioteknologi och hälsa (CBH), Centra, Wallenberg Wood Science Center.
SCG Packaging Publ Co Ltd, Prod & Technol Dev Ctr, Ban Pong 70110, Ratchaburi, Thailand..
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2018 (engelsk)Inngår i: Cellulose (London), ISSN 0969-0239, E-ISSN 1572-882X, Vol. 25, nr 5, s. 3121-3133Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

High Klason lignin content (23 wt%) cellulose nanofibrils (LCNF) were successfully isolated from eucalyptus pulp through catalyzed chemical oxidation, followed by high-pressure homogenization. LCNFs had a diameter of ca. 13 nm according to AFM evaluation. Dense films were obtained through vacuum filtration (nanopaper) and subjected to different drying methods. When drying under heat and mild vacuum (93 degrees C, 95 kPa) a higher water contact angle, lower roughness and oxygen transmission rate were observed, compared to those drying at room temperature under compression conditions. DSC experiments showed difference in signals associated to T-g of LCNF compared to CNF produced from spruce bleached pulp through enzymatic pre-treatment. The LCNF-based nanopaper showed mechanical properties slightly lower than for those made from cellulose nanofibrils, yet with increased hydrophobicity. In summary, the high-lignin content cellulose nanofibrils proved to be a suitable material for the production of low oxygen permeability nanopaper, with chemical composition close to native wood.

sted, utgiver, år, opplag, sider
SPRINGER , 2018. Vol. 25, nr 5, s. 3121-3133
Emneord [en]
Lignocellulose nanofibrils, Oxygen barrier, Eucalyptus
HSV kategori
Identifikatorer
URN: urn:nbn:se:kth:diva-228268DOI: 10.1007/s10570-018-1764-9ISI: 000431788000028Scopus ID: 2-s2.0-85045090612OAI: oai:DiVA.org:kth-228268DiVA, id: diva2:1209216
Merknad

QC 20180522

Tilgjengelig fra: 2018-05-22 Laget: 2018-05-22 Sist oppdatert: 2019-08-20bibliografisk kontrollert

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Herrera, MarthaRojas, RamiroBerglund, Lars

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