Films of Bacterial Cellulose Prepared from Solutions in <i>N</i>-Methylmorpholine-<i>N</i>-Oxide: Structure and Properties
In the present study, one of the possible methods of the bacterial cellulose processing is proposed via its dissolution in <i>N</i>-methylmorpholine-<i>N</i>-oxide using the stage of mechano-chemical activation of the solid polymer−solvent system. Preliminary solid-...
Main Authors: | , , , , , , , |
---|---|
Format: | Article |
Language: | English |
Published: |
MDPI AG
2020-02-01
|
Series: | Processes |
Subjects: | |
Online Access: | https://www.mdpi.com/2227-9717/8/2/171 |
id |
doaj-c19a773c3fe243f8a980bcc1401fb238 |
---|---|
record_format |
Article |
spelling |
doaj-c19a773c3fe243f8a980bcc1401fb2382020-11-25T02:16:08ZengMDPI AGProcesses2227-97172020-02-018217110.3390/pr8020171pr8020171Films of Bacterial Cellulose Prepared from Solutions in <i>N</i>-Methylmorpholine-<i>N</i>-Oxide: Structure and PropertiesIgor S. Makarov0Gulbarshin K. Shambilova1Markel I. Vinogradov2Pavel V. Zatonskih3Tatyana I. Gromovykh4Sergey V. Lutsenko5Nаtalia A. Arkharova6Valery G. Kulichikhin7A.V. Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences, 119991 Moscow, RussiaDepartment of Chemistry and Chemical Technology, Atyrau State University named after Kh. Dosmukhamedov, Atyrau 060011, KazakhstanA.V. Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences, 119991 Moscow, RussiaA.V. Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences, 119991 Moscow, RussiaDepartment of Biotechnology, I.M. Sechenov First Moscow State Medical University, 119991 Moscow, RussiaDepartment of Biotechnology, I.M. Sechenov First Moscow State Medical University, 119991 Moscow, RussiaA.V. Shubnikov Institute of Crystallography, Federal Research Center Crystallography and Photonics, Russian Academy of Sciences, 119333 Moscow, RussiaA.V. Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences, 119991 Moscow, RussiaIn the present study, one of the possible methods of the bacterial cellulose processing is proposed via its dissolution in <i>N</i>-methylmorpholine-<i>N</i>-oxide using the stage of mechano-chemical activation of the solid polymer−solvent system. Preliminary solid-phase activation is apparently a decisive factor affecting the dissolution rate of bacterial cellulose in <i>N</i>-methylmorpholine-<i>N</i>-oxide. The effects of bacterial cellulose concentration, solvent nature, degree of polymerization and temperature on dissolution time were studied. The rheological behavior of the solutions does not change at 120 °C for at least half an hour that allowed us to process such solutions for films preparation. The films from these solutions by means of dry-wet jet spinning in aqueous coagulant were formed. The structure of the nascent cellulose and formed films was tested by the X-ray diffraction method and SEM. The thermal behavior of the films revealed an increase in the carbon yield for the formed films compared to the nascent bacterial cellulose. The process of film pyrolysis is accompanied by exothermic effects, which are not typical for wood cellulose. Some reasons of such thermal behavior are considered.https://www.mdpi.com/2227-9717/8/2/171bacterial cellulose<i>n</i>-methylmorpholine-<i>n</i>-oxidemechano-chemical activationcellulose solutionrheologyfilm formationstructure |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Igor S. Makarov Gulbarshin K. Shambilova Markel I. Vinogradov Pavel V. Zatonskih Tatyana I. Gromovykh Sergey V. Lutsenko Nаtalia A. Arkharova Valery G. Kulichikhin |
spellingShingle |
Igor S. Makarov Gulbarshin K. Shambilova Markel I. Vinogradov Pavel V. Zatonskih Tatyana I. Gromovykh Sergey V. Lutsenko Nаtalia A. Arkharova Valery G. Kulichikhin Films of Bacterial Cellulose Prepared from Solutions in <i>N</i>-Methylmorpholine-<i>N</i>-Oxide: Structure and Properties Processes bacterial cellulose <i>n</i>-methylmorpholine-<i>n</i>-oxide mechano-chemical activation cellulose solution rheology film formation structure |
author_facet |
Igor S. Makarov Gulbarshin K. Shambilova Markel I. Vinogradov Pavel V. Zatonskih Tatyana I. Gromovykh Sergey V. Lutsenko Nаtalia A. Arkharova Valery G. Kulichikhin |
author_sort |
Igor S. Makarov |
title |
Films of Bacterial Cellulose Prepared from Solutions in <i>N</i>-Methylmorpholine-<i>N</i>-Oxide: Structure and Properties |
title_short |
Films of Bacterial Cellulose Prepared from Solutions in <i>N</i>-Methylmorpholine-<i>N</i>-Oxide: Structure and Properties |
title_full |
Films of Bacterial Cellulose Prepared from Solutions in <i>N</i>-Methylmorpholine-<i>N</i>-Oxide: Structure and Properties |
title_fullStr |
Films of Bacterial Cellulose Prepared from Solutions in <i>N</i>-Methylmorpholine-<i>N</i>-Oxide: Structure and Properties |
title_full_unstemmed |
Films of Bacterial Cellulose Prepared from Solutions in <i>N</i>-Methylmorpholine-<i>N</i>-Oxide: Structure and Properties |
title_sort |
films of bacterial cellulose prepared from solutions in <i>n</i>-methylmorpholine-<i>n</i>-oxide: structure and properties |
publisher |
MDPI AG |
series |
Processes |
issn |
2227-9717 |
publishDate |
2020-02-01 |
description |
In the present study, one of the possible methods of the bacterial cellulose processing is proposed via its dissolution in <i>N</i>-methylmorpholine-<i>N</i>-oxide using the stage of mechano-chemical activation of the solid polymer−solvent system. Preliminary solid-phase activation is apparently a decisive factor affecting the dissolution rate of bacterial cellulose in <i>N</i>-methylmorpholine-<i>N</i>-oxide. The effects of bacterial cellulose concentration, solvent nature, degree of polymerization and temperature on dissolution time were studied. The rheological behavior of the solutions does not change at 120 °C for at least half an hour that allowed us to process such solutions for films preparation. The films from these solutions by means of dry-wet jet spinning in aqueous coagulant were formed. The structure of the nascent cellulose and formed films was tested by the X-ray diffraction method and SEM. The thermal behavior of the films revealed an increase in the carbon yield for the formed films compared to the nascent bacterial cellulose. The process of film pyrolysis is accompanied by exothermic effects, which are not typical for wood cellulose. Some reasons of such thermal behavior are considered. |
topic |
bacterial cellulose <i>n</i>-methylmorpholine-<i>n</i>-oxide mechano-chemical activation cellulose solution rheology film formation structure |
url |
https://www.mdpi.com/2227-9717/8/2/171 |
work_keys_str_mv |
AT igorsmakarov filmsofbacterialcellulosepreparedfromsolutionsininimethylmorpholineinioxidestructureandproperties AT gulbarshinkshambilova filmsofbacterialcellulosepreparedfromsolutionsininimethylmorpholineinioxidestructureandproperties AT markelivinogradov filmsofbacterialcellulosepreparedfromsolutionsininimethylmorpholineinioxidestructureandproperties AT pavelvzatonskih filmsofbacterialcellulosepreparedfromsolutionsininimethylmorpholineinioxidestructureandproperties AT tatyanaigromovykh filmsofbacterialcellulosepreparedfromsolutionsininimethylmorpholineinioxidestructureandproperties AT sergeyvlutsenko filmsofbacterialcellulosepreparedfromsolutionsininimethylmorpholineinioxidestructureandproperties AT nataliaaarkharova filmsofbacterialcellulosepreparedfromsolutionsininimethylmorpholineinioxidestructureandproperties AT valerygkulichikhin filmsofbacterialcellulosepreparedfromsolutionsininimethylmorpholineinioxidestructureandproperties |
_version_ |
1724892597275590656 |