A novel method for cellulose modification in aqueous media via alkoxysilane chemistry
Surface modification of cellulose, as the world’s most abundant polymer, plays an important role in sustainable chemistry. Microcrystalline cellulose, Avicel, was modified by an alkoxysilane under mild conditions in water, at room temperature and with a catalytic amount of sodium hydroxide. (3-Merca...
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| Format: | Article |
| Language: | fas |
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Iranian Scientific Association of Wood and Paper Industries
2016-12-01
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| Series: | Iranian Journal of Wood and Paper Industries |
| Subjects: | |
| Online Access: | http://www.ijwp.ir/article_19849_6c4b92ada92917cdf78b2dab051f95fd.pdf |
| _version_ | 1811314492224569344 |
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| author | Fereshteh Fadavi Ali Abdolkhani Yahya Hamzeh Hubert Hettegger Thomas Rosenau |
| author_facet | Fereshteh Fadavi Ali Abdolkhani Yahya Hamzeh Hubert Hettegger Thomas Rosenau |
| author_sort | Fereshteh Fadavi |
| collection | DOAJ |
| description | Surface modification of cellulose, as the world’s most abundant polymer, plays an important role in sustainable chemistry. Microcrystalline cellulose, Avicel, was modified by an alkoxysilane under mild conditions in water, at room temperature and with a catalytic amount of sodium hydroxide. (3-Mercaptopropyl)-trimethoxysilane in three concentrations 535, 1074, 1614 µmol/mL (100, 200, 300 µL of silane, respectively) was grafted onto cellulose, then the modified cellulose was characterized by FTIR spectroscopy as well as solid state 13C NMR and 29Si NMR spectroscopy. Increasing the concentration of the alkoxysilane from 353 to 1074 µmol/mL increased the ratio of siloxane bridges with the cellulose backbone, while by increasing the silane concentration from 1074 to 1614 µmol/mL, has inhanced the ratio of polysiloxane bridges relative to covalent links with the cellulose backbone from 34% to 66%. |
| first_indexed | 2024-04-13T11:13:35Z |
| format | Article |
| id | doaj.art-ab4cb0dd98874d69a4232eb48496bda2 |
| institution | Directory Open Access Journal |
| issn | 2008-9066 2423-3242 |
| language | fas |
| last_indexed | 2024-04-13T11:13:35Z |
| publishDate | 2016-12-01 |
| publisher | Iranian Scientific Association of Wood and Paper Industries |
| record_format | Article |
| series | Iranian Journal of Wood and Paper Industries |
| spelling | doaj.art-ab4cb0dd98874d69a4232eb48496bda22022-12-22T02:49:03ZfasIranian Scientific Association of Wood and Paper IndustriesIranian Journal of Wood and Paper Industries2008-90662423-32422016-12-017346347419849A novel method for cellulose modification in aqueous media via alkoxysilane chemistryFereshteh Fadavi0Ali Abdolkhani1Yahya Hamzeh2Hubert Hettegger3Thomas Rosenau4Ph.D. student of University of Tehran, University College of Agriculture and Natural Resources, Faculty of wood and Paperdepartment of pulp and paper thecnology, faculty of natural resources, University of TehranDepartment of wood and paper technology, faculty of natural resources, university college of agricultural sciences and matural resources, university of TehranUniversity of Natural Resources and Life Sciences Vienna (BOKU), Department of Chemistry, Division of Chemistry of Renewable Resources.University of Natural Resources and Life Sciences Vienna (BOKU), Department of Chemistry, Division of Chemistry of Renewable Resources (BOKU), AustriaSurface modification of cellulose, as the world’s most abundant polymer, plays an important role in sustainable chemistry. Microcrystalline cellulose, Avicel, was modified by an alkoxysilane under mild conditions in water, at room temperature and with a catalytic amount of sodium hydroxide. (3-Mercaptopropyl)-trimethoxysilane in three concentrations 535, 1074, 1614 µmol/mL (100, 200, 300 µL of silane, respectively) was grafted onto cellulose, then the modified cellulose was characterized by FTIR spectroscopy as well as solid state 13C NMR and 29Si NMR spectroscopy. Increasing the concentration of the alkoxysilane from 353 to 1074 µmol/mL increased the ratio of siloxane bridges with the cellulose backbone, while by increasing the silane concentration from 1074 to 1614 µmol/mL, has inhanced the ratio of polysiloxane bridges relative to covalent links with the cellulose backbone from 34% to 66%.http://www.ijwp.ir/article_19849_6c4b92ada92917cdf78b2dab051f95fd.pdfCellulose modificationcellulose surface chemistrymicrocrystalline cellulosealkoxysilane chemistry(3-mercaptopropyl)-trimethoxysilane |
| spellingShingle | Fereshteh Fadavi Ali Abdolkhani Yahya Hamzeh Hubert Hettegger Thomas Rosenau A novel method for cellulose modification in aqueous media via alkoxysilane chemistry Iranian Journal of Wood and Paper Industries Cellulose modification cellulose surface chemistry microcrystalline cellulose alkoxysilane chemistry (3-mercaptopropyl)-trimethoxysilane |
| title | A novel method for cellulose modification in aqueous media via alkoxysilane chemistry |
| title_full | A novel method for cellulose modification in aqueous media via alkoxysilane chemistry |
| title_fullStr | A novel method for cellulose modification in aqueous media via alkoxysilane chemistry |
| title_full_unstemmed | A novel method for cellulose modification in aqueous media via alkoxysilane chemistry |
| title_short | A novel method for cellulose modification in aqueous media via alkoxysilane chemistry |
| title_sort | novel method for cellulose modification in aqueous media via alkoxysilane chemistry |
| topic | Cellulose modification cellulose surface chemistry microcrystalline cellulose alkoxysilane chemistry (3-mercaptopropyl)-trimethoxysilane |
| url | http://www.ijwp.ir/article_19849_6c4b92ada92917cdf78b2dab051f95fd.pdf |
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