Zobrazeno 1 - 10
of 130
pro vyhledávání: '"Claude Daneault"'
Publikováno v:
Applied Sciences, Vol 5, Iss 4, Pp 1164-1183 (2015)
In the present paper, we report on a simple and new approach for the synthesis of hierarchical flower-like zinc oxide superstructures ZnO (FL) in the presence of the TEMPO-oxidized cellulose gel (TOCgel) through a room temperature sol-gel process in
Externí odkaz:
https://doaj.org/article/765502bb59e14e3290228b9b0d0f7913
Autor:
Houssein Awada, Claude Daneault
Publikováno v:
Applied Sciences, Vol 5, Iss 4, Pp 840-850 (2015)
Partial chemical modification of poly(vinyl alcohol) (PVA) was performed through tosylation followed by azidation. Amine functional PVA was also prepared by grafting propargylamine using click chemistry reaction. Through this approach, a tosyl group
Externí odkaz:
https://doaj.org/article/b7d62514e4434ea0b1c3973a43122baa
Publikováno v:
BioResources, Vol 10, Iss 3, Pp 4933-4946 (2015)
In this paper, the depolymerization of lignin was successfully achieved by the thermal treatment of kraft lignin in butyl-1,8-diazabicyclo[5.4.0]undec-7-enium chloride ([DBUC4+][Cl-]) without a catalyst. The thermal treatment experiments were perform
Externí odkaz:
https://doaj.org/article/050f2452d2064fc5844a315f509d23dc
Publikováno v:
BioResources, Vol 9, Iss 2, Pp 3439-3448 (2014)
Boric acid was employed to improve the homogeneity and mechanical properties of a composite based on cellulose fibres and polyvinyl alcohol (PVOH). The influence of boric acid, under different pH values, on the mechanical properties cellulose fibres
Externí odkaz:
https://doaj.org/article/48ab6a5272bb454ca6ddefa04279c362
Publikováno v:
Nanomaterials, Vol 3, Iss 4, Pp 638-654 (2013)
Esterification and click-chemistry were evaluated as surface modification treatments for TEMPO-oxidized nanocelluloses (TONC) using Polycaprolactone-diol (PCL) as modifying compound in order to improve the dispersion of nanofibers in organic media. T
Externí odkaz:
https://doaj.org/article/dad17880f7d846e9a65597b79b7a7563
Publikováno v:
Nanomaterials, Vol 3, Iss 1, Pp 141-157 (2013)
The main objective of this work is the grafting of polycaprolactone diol (PCL) on the surface of oxidized nanocelluloses (ONC) in order to enhance the compatibility between the hydrophilic cellulose nanofibres and the hydrophobic polymer matrix. This
Externí odkaz:
https://doaj.org/article/9aebf77107144bbbb3e58d11cc126546
Publikováno v:
Nanomaterials, Vol 2, Iss 3, Pp 286-297 (2012)
Cellulose nanofibers can be produced using a combination of TEMPO, sodium bromide (NaBr) and sodium hypochlorite, and mechanical dispersion. Recently, this process has been the subject of intensive investigation. However, studies on the aspects of me
Externí odkaz:
https://doaj.org/article/967f714370f54506bc8fb5c65b8125ab
Autor:
Claude Daneault, Saïd Barazzouk
Publikováno v:
Nanomaterials, Vol 2, Iss 2, Pp 187-205 (2012)
In this work, oxidized nanocellulose (ONC) was synthesized and chemically coupled with amino acids and peptides using a two step coupling method at room temperature. First, ONC was activated by N-ethyl-N’-(3-dimethylaminopropyl) carbodiimide hydroc
Externí odkaz:
https://doaj.org/article/5da34820a4af490e88a1712ccb2ec185
Publikováno v:
BioResources, Vol 7, Iss 2, Pp 2260-2271 (2012)
In order to improve the properties of thermomechanical pulp (TMP), the influences of the TEMPO (2,2,6,6-tetramethylpiperidyl-1-oxyl radical)-mediated oxidation on recycled TMP properties were investigated, and the impacts of recycling process on TEMP
Externí odkaz:
https://doaj.org/article/f743fae1715749d4ba8ad701e9d461e3
Publikováno v:
BioResources, Vol 7, Iss 2, Pp 2090-2104 (2012)
A layer-by-layer (LbL) self-assembly technique using polyallylamine hydrochloride (PAH) and polyacrylic acid (PAA) was employed to build up polyelectrolyte multi-layers on pretreated thermomechanical pulp fibres. These pretreated fibres previously ha
Externí odkaz:
https://doaj.org/article/b0c92d4a6371436987232458c037bcde