N. Savale, E. Tarasova, A. Katerski, A. Mere, I. Heinmaa, I. Osadchuk, T. Kaljuvee, V. Mikli, A. Krumme
{"title":"超碱离子液体再生纤维素的结构和热性能：绿色助溶剂的影响","authors":"N. Savale, E. Tarasova, A. Katerski, A. Mere, I. Heinmaa, I. Osadchuk, T. Kaljuvee, V. Mikli, A. Krumme","doi":"10.1007/s10570-025-06452-8","DOIUrl":null,"url":null,"abstract":"<div><p>This study investigates the effect of green polar aprotic co-solvents such as <i>N,N</i>-Dimethylpropyleneurea (DMPU), dimethyl isosorbide (DMI), sulfolane (SLF), and γ-valerolactone (GVL) on the properties of regenerated cellulose. Binary solvent systems, containing superbase ionic liquid (SB-IL, 5-methyl-1,5,7-triaza-bicyclo-[4.3.0]-non-6-enium acetate) and green co-solvents, effectively dissolved cellulose without causing significant changes in cellulose molar mass. NMR and XRD analysis differentiated between cellulose allomorphs and demonstrated the impact of various co-solvents on the crystallinity of regenerated cellulose. Peaks characteristic of cellulose II allomorph appeared in regenerated samples, indicating disruption of the native cellulose I structure. The crystallite size and proportion of crystallite interior chains decreased in regenerated cellulose compared to native cellulose, indicating the reduced crystallinity and increased exposure of cellulose chains to various modifications. The TGA analysis revealed that the regenerated celluloses displayed two-step thermal degradation, related to the sequential degradation of amorphous and crystalline phases. The thermal stability, crystallinity index, and crystallite size hierarchy were determined as Cell-DMPU > Cell-SLF > Cell-DMI > Cell-GVL > Cell-DMSO, underscoring the influence of co-solvent type on the thermal and structural properties of regenerated cellulose.</p></div>","PeriodicalId":511,"journal":{"name":"Cellulose","volume":"32 5","pages":"2919 - 2936"},"PeriodicalIF":4.9000,"publicationDate":"2025-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Structural and thermal properties of cellulose regenerated from superbase ionic liquid: effect of green co-solvents\",\"authors\":\"N. Savale, E. Tarasova, A. Katerski, A. Mere, I. Heinmaa, I. Osadchuk, T. Kaljuvee, V. Mikli, A. Krumme\",\"doi\":\"10.1007/s10570-025-06452-8\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>This study investigates the effect of green polar aprotic co-solvents such as <i>N,N</i>-Dimethylpropyleneurea (DMPU), dimethyl isosorbide (DMI), sulfolane (SLF), and γ-valerolactone (GVL) on the properties of regenerated cellulose. Binary solvent systems, containing superbase ionic liquid (SB-IL, 5-methyl-1,5,7-triaza-bicyclo-[4.3.0]-non-6-enium acetate) and green co-solvents, effectively dissolved cellulose without causing significant changes in cellulose molar mass. NMR and XRD analysis differentiated between cellulose allomorphs and demonstrated the impact of various co-solvents on the crystallinity of regenerated cellulose. Peaks characteristic of cellulose II allomorph appeared in regenerated samples, indicating disruption of the native cellulose I structure. The crystallite size and proportion of crystallite interior chains decreased in regenerated cellulose compared to native cellulose, indicating the reduced crystallinity and increased exposure of cellulose chains to various modifications. The TGA analysis revealed that the regenerated celluloses displayed two-step thermal degradation, related to the sequential degradation of amorphous and crystalline phases. The thermal stability, crystallinity index, and crystallite size hierarchy were determined as Cell-DMPU > Cell-SLF > Cell-DMI > Cell-GVL > Cell-DMSO, underscoring the influence of co-solvent type on the thermal and structural properties of regenerated cellulose.</p></div>\",\"PeriodicalId\":511,\"journal\":{\"name\":\"Cellulose\",\"volume\":\"32 5\",\"pages\":\"2919 - 2936\"},\"PeriodicalIF\":4.9000,\"publicationDate\":\"2025-03-03\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Cellulose\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s10570-025-06452-8\",\"RegionNum\":2,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"MATERIALS SCIENCE, PAPER & WOOD\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Cellulose","FirstCategoryId":"88","ListUrlMain":"https://link.springer.com/article/10.1007/s10570-025-06452-8","RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"MATERIALS SCIENCE, PAPER & WOOD","Score":null,"Total":0}
Structural and thermal properties of cellulose regenerated from superbase ionic liquid: effect of green co-solvents
This study investigates the effect of green polar aprotic co-solvents such as N,N-Dimethylpropyleneurea (DMPU), dimethyl isosorbide (DMI), sulfolane (SLF), and γ-valerolactone (GVL) on the properties of regenerated cellulose. Binary solvent systems, containing superbase ionic liquid (SB-IL, 5-methyl-1,5,7-triaza-bicyclo-[4.3.0]-non-6-enium acetate) and green co-solvents, effectively dissolved cellulose without causing significant changes in cellulose molar mass. NMR and XRD analysis differentiated between cellulose allomorphs and demonstrated the impact of various co-solvents on the crystallinity of regenerated cellulose. Peaks characteristic of cellulose II allomorph appeared in regenerated samples, indicating disruption of the native cellulose I structure. The crystallite size and proportion of crystallite interior chains decreased in regenerated cellulose compared to native cellulose, indicating the reduced crystallinity and increased exposure of cellulose chains to various modifications. The TGA analysis revealed that the regenerated celluloses displayed two-step thermal degradation, related to the sequential degradation of amorphous and crystalline phases. The thermal stability, crystallinity index, and crystallite size hierarchy were determined as Cell-DMPU > Cell-SLF > Cell-DMI > Cell-GVL > Cell-DMSO, underscoring the influence of co-solvent type on the thermal and structural properties of regenerated cellulose.
期刊介绍：
Cellulose is an international journal devoted to the dissemination of research and scientific and technological progress in the field of cellulose and related naturally occurring polymers. The journal is concerned with the pure and applied science of cellulose and related materials, and also with the development of relevant new technologies. This includes the chemistry, biochemistry, physics and materials science of cellulose and its sources, including wood and other biomass resources, and their derivatives. Coverage extends to the conversion of these polymers and resources into manufactured goods, such as pulp, paper, textiles, and manufactured as well natural fibers, and to the chemistry of materials used in their processing. Cellulose publishes review articles, research papers, and technical notes.
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