Deconstruction of microfibrillated cellulose into
nanocrystalline cellulose rods and mesogenic phase formation in
concentrated low-modulus sodium silicate solutions

J 2019

Deconstruction of microfibrillated cellulose into nanocrystalline cellulose rods and mesogenic phase formation in concentrated low-modulus sodium silicate solutions

BERTOLLA, L., I. DLOUHY, E. BARTONICKOVA, Jaromír TOUŠEK, Jiří NOVÁČEK et. al.

Základní údaje

Originální název

Deconstruction of microfibrillated cellulose into nanocrystalline cellulose rods and mesogenic phase formation in concentrated low-modulus sodium silicate solutions

Autoři

BERTOLLA, L., I. DLOUHY, E. BARTONICKOVA, Jaromír TOUŠEK (203 Česká republika, domácí), Jiří NOVÁČEK (203 Česká republika, domácí) a P. MACOVA

Vydání

Cellulose, DORDRECHT, SPRINGER, 2019, 0969-0239

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10404 Polymer science

Stát vydavatele

Nizozemské království

Utajení

není předmětem státního či obchodního tajemství

Odkazy

URL

Impakt faktor

Impact factor: 4.210

Kód RIV

RIV/00216224:14740/19:00113291

Organizační jednotka

Středoevropský technologický institut

DOI

http://dx.doi.org/10.1007/s10570-019-02364-6

UT WoS

000465576000008

Klíčová slova anglicky

Microfibrillated cellulose; Cellulose nanocrystal; Sodium silicate

Štítky

CF BIC, rivok

Příznaky

Mezinárodní význam, Recenzováno

Změněno: 27. 10. 2024 13:58, Ing. Martina Blahová

Anotace

V originále

This work demonstrates for the first time the deconstruction of microfibrillated cellulose (MFC) into rod-like cellulose nanocrystals (CNCs) in concentrated low modulus sodium silicate solutions. To this aim, MFC suspensions at different concentrations were first treated in sodium hydroxide solutions and then amorphous silica powder was added. Optical microscopy and transmission electron microscopy observation showed how MFC was efficiently deconstructed into CNCs, evidencing the occurrence of a phase separation into an isotropic and mesogenic phase. The extracted CNCs were characterized by a remarkably higher length (600-1200nm) in comparison with the plant-derived ones commonly reported in literature. FT-IR spectroscopy and Si-29 MAS NMR confirmed that the Q(n) equilibrium of the suspended silicate species was affected, proportionally to the amount of MFC. It was also shown, that due to the excluded volume effect exerted by silicate anions, nematic or smectic ordering could be achieved for CNC concentrations far below the critical rod concentration predicted by the Doi-Edwards model. [GRAPHICS] .

Návaznosti

90043, velká výzkumná infrastruktura

Název: CIISB

Citovat

BERTOLLA, L., I. DLOUHY, E. BARTONICKOVA, Jaromír TOUŠEK, Jiří NOVÁČEK a P. MACOVA. Deconstruction of microfibrillated cellulose into nanocrystalline cellulose rods and mesogenic phase formation in concentrated low-modulus sodium silicate solutions. Cellulose. DORDRECHT: SPRINGER, 2019, roč. 26, č. 7, s. 4325-4344. ISSN 0969-0239. Dostupné z: https://dx.doi.org/10.1007/s10570-019-02364-6.

@article{1636926,
   author = {Bertolla, L. and Dlouhy, I. and Bartonickova, E. and Toušek, Jaromír and Nováček, Jiří and Macova, P.},
   article_location = {DORDRECHT},
   article_number = {7},
   doi = {http://dx.doi.org/10.1007/s10570-019-02364-6},
   keywords = {Microfibrillated cellulose; Cellulose nanocrystal; Sodium silicate},
   language = {eng},
   issn = {0969-0239},
   journal = {Cellulose},
   title = {Deconstruction of microfibrillated cellulose into nanocrystalline cellulose rods and mesogenic phase formation in concentrated low-modulus sodium silicate solutions},
   url = {http://dx.doi.org/10.1007/s10570-019-02364-6},
   volume = {26},
   year = {2019}
}

TY  - JOUR
ID  - 1636926
AU  - Bertolla, L. - Dlouhy, I. - Bartonickova, E. - Toušek, Jaromír - Nováček, Jiří - Macova, P.
PY  - 2019
TI  - Deconstruction of microfibrillated cellulose into nanocrystalline cellulose rods and mesogenic phase formation in concentrated low-modulus sodium silicate solutions
JF  - Cellulose
VL  - 26
IS  - 7
SP  - 4325-4344
EP  - 4325-4344
PB  - SPRINGER
SN  - 09690239
KW  - Microfibrillated cellulose
KW  - Cellulose nanocrystal
KW  - Sodium silicate
UR  - http://dx.doi.org/10.1007/s10570-019-02364-6
L2  - http://dx.doi.org/10.1007/s10570-019-02364-6
N2  - This work demonstrates for the first time the deconstruction of microfibrillated cellulose (MFC) into rod-like cellulose nanocrystals (CNCs) in concentrated low modulus sodium silicate solutions. To this aim, MFC suspensions at different concentrations were first treated in sodium hydroxide solutions and then amorphous silica powder was added. Optical microscopy and transmission electron microscopy observation showed how MFC was efficiently deconstructed into CNCs, evidencing the occurrence of a phase separation into an isotropic and mesogenic phase. The extracted CNCs were characterized by a remarkably higher length (600-1200nm) in comparison with the plant-derived ones commonly reported in literature. FT-IR spectroscopy and Si-29 MAS NMR confirmed that the Q(n) equilibrium of the suspended silicate species was affected, proportionally to the amount of MFC. It was also shown, that due to the excluded volume effect exerted by silicate anions, nematic or smectic ordering could be achieved for CNC concentrations far below the critical rod concentration predicted by the Doi-Edwards model. [GRAPHICS] .
ER  -

BERTOLLA, L., I. DLOUHY, E. BARTONICKOVA, Jaromír TOUŠEK, Jiří NOVÁČEK a P. MACOVA. Deconstruction of microfibrillated cellulose into nanocrystalline cellulose rods and mesogenic phase formation in concentrated low-modulus sodium silicate solutions. \textit{Cellulose}. DORDRECHT: SPRINGER, 2019, roč.~26, č.~7, s.~4325-4344. ISSN~0969-0239. Dostupné z: https://dx.doi.org/10.1007/s10570-019-02364-6.

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