Ушбу мақолада сомон целлюлозасидан кислотали гидролиз усули ёрдамида микрокристаллик целлюлоза ва наноцеллюлоза олиш тадқиқот натижалари ёритилган. Микрокристаллик целлюлоза ва наноцеллюлоза ўлчамлари, тузилиши ва хоссалари ёруғликнинг динамик сочилиши, инфрақизил спектроскопия, рентгеноструктуравий таҳлил, атом куч микроскопия, термик таҳлил каби усуллар билан тадқиқ қилинган. Микрокристаллик целлюлозанинг полимерланиш даражаси 232, кристалланиш даражаси 70 %, зарра ўлчамлари 70-400 мкм эканлиги, наноцеллюлозанинг полимерланиш даражаси 162, кристалланиш даражаси 79 %, зарра ўлчамлари 50-250 нм эканлиги аниқланган ва бу кўрсаткичларни гидролиз жараёнига таъсир қилувчи ўзгарувчан омиллар (кислота концентрацияси, ҳарорат, гидролиз давомийлиги) таъсирида назорат қилиш имкониятлари кўрсатилган.
Ушбу мақолада сомон целлюлозасидан кислотали гидролиз усули ёрдамида микрокристаллик целлюлоза ва наноцеллюлоза олиш тадқиқот натижалари ёритилган. Микрокристаллик целлюлоза ва наноцеллюлоза ўлчамлари, тузилиши ва хоссалари ёруғликнинг динамик сочилиши, инфрақизил спектроскопия, рентгеноструктуравий таҳлил, атом куч микроскопия, термик таҳлил каби усуллар билан тадқиқ қилинган. Микрокристаллик целлюлозанинг полимерланиш даражаси 232, кристалланиш даражаси 70 %, зарра ўлчамлари 70-400 мкм эканлиги, наноцеллюлозанинг полимерланиш даражаси 162, кристалланиш даражаси 79 %, зарра ўлчамлари 50-250 нм эканлиги аниқланган ва бу кўрсаткичларни гидролиз жараёнига таъсир қилувчи ўзгарувчан омиллар (кислота концентрацияси, ҳарорат, гидролиз давомийлиги) таъсирида назорат қилиш имкониятлари кўрсатилган.
В данной работе путем кислотного гидролиза получены микрокристаллическая целлюлоза и наноцеллюлоза на основе соломенной целлюлозы. Исследованы размеры, структура и свойства микрокристаллической целлюлозы и наноцеллюлозы методами динамического рассеяния света, инфракрасной спектроскопии, рентгеноструктурного анализа, атомно-силовой микроскопии, термического анализа. Установлено, что для микрокристаллической целлюлозы степень полимеризации составляет 232, степень кристалличности – 70 %, размер частиц – 70-400 мкм, для наноцеллюлозы степень полимеризации составляет 162, степень кристалличности – 79 %, размер частиц – 50- 250 нм, а также показана возможность регулирования данных параметров переменными факторами, влияющими на процесс гидролиза.
This work was dedicated to generating the microcrystalline cellulose and nanocellulose based on straw cellulose using acid hydrolysis method. Dimensions, structure, and properties of the microcrystalline and nanocellulose have been investigated using dynamic light scattering, infrared spectroscopy, X-ray diffraction analysis, atomic force microscopy, and thermal analysis. It was found that for microcrystalline cellulose the degree of polymerization made 232, the degree of crystallinity is 70%, the particle size was 70-400 μm, whereas for nanocellulose the degree of polymerization – 162, the degree of crystallinity – 79%, the particle size was 50-250 nm, as well as the findings showed that these parameters could be controlled by variables factors than can affect hydrolysis processes.
| № | Muallifning F.I.Sh. | Lavozimi | Tashkilot nomi |
|---|---|---|---|
| 1 | Mamadiyorov B.N. | doktorant, kichik ilmiy xodim | O‘zbekiston Respublikasi Fanlar akademiyasi Polimerlar kimyosi va fizikasi instituti |
| 2 | Ergashev D.J. | kichik ilmiy xodim | O‘zbekiston Respublikasi Fanlar akademiyasi Polimerlar kimyosi va fizikasi instituti |
| 3 | Saidmuhammedova M.Q. | kichik ilmiy xodim | O‘zbekiston Respublikasi Fanlar akademiyasi Polimerlar kimyosi va fizikasi instituti |
| 4 | Ashurov N.S. | fizika-matematika fanlari nomzodi, katta ilmiy xodim | O‘zbekiston Respublikasi Fanlar akademiyasi Polimerlar kimyosi va fizikasi instituti |
| 5 | Ataxanov A.A. | texnika fanlari doktori, laboratoriya mudiri | O‘zbekiston Respublikasi Fanlar akademiyasi Polimerlar kimyosi va fizikasi instituti |
| № | Havola nomi |
|---|---|
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