{"title":"Homogeneous Hydrophobic Modification of Hydroxyethyl Cellulose in Ionic Liquids","authors":"Mingwei Du, Shuang Men, Yujuan Jin","doi":"10.1134/s1560090424600049","DOIUrl":null,"url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>Hydrophobic modification of hydroxyethyl cellulose is carried out in ionic liquids homogeneously, with bromododecane as the etherification agent. FTIR, XRD, XPS, and DSC analysis are used to characterize the obtained products. The effect of reaction temperature, time and the content of bromododecane on the viscosity of the aqueous solution of the modified product are discussed in detail. It is found that when hydroxyethyl cellulose is modified with the optimal conditions (at 80°C for 6 h), the crystalline structure changes to amorphous completely, the degree of substituent is 0.27, the glass transition point increases from 102.1 to 128.6°C. The thickening property, viscosity temperature resistance and salt tolerance before and after grafting long alkyl chain into the molecular chains are compared. It concludes that by hydrophobically modifying hydroxyethyl cellulose with long alkyl chains, all the above properties can be significantly improved, which may extremely expand the applications of hydroxyethyl cellulose.</p>","PeriodicalId":739,"journal":{"name":"Polymer Science, Series B","volume":null,"pages":null},"PeriodicalIF":1.0000,"publicationDate":"2024-03-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Polymer Science, Series B","FirstCategoryId":"1","ListUrlMain":"https://doi.org/10.1134/s1560090424600049","RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"POLYMER SCIENCE","Score":null,"Total":0}
引用次数: 0
Abstract
Hydrophobic modification of hydroxyethyl cellulose is carried out in ionic liquids homogeneously, with bromododecane as the etherification agent. FTIR, XRD, XPS, and DSC analysis are used to characterize the obtained products. The effect of reaction temperature, time and the content of bromododecane on the viscosity of the aqueous solution of the modified product are discussed in detail. It is found that when hydroxyethyl cellulose is modified with the optimal conditions (at 80°C for 6 h), the crystalline structure changes to amorphous completely, the degree of substituent is 0.27, the glass transition point increases from 102.1 to 128.6°C. The thickening property, viscosity temperature resistance and salt tolerance before and after grafting long alkyl chain into the molecular chains are compared. It concludes that by hydrophobically modifying hydroxyethyl cellulose with long alkyl chains, all the above properties can be significantly improved, which may extremely expand the applications of hydroxyethyl cellulose.
期刊介绍：
Polymer Science, Series B is a journal published in collaboration with the Russian Academy of Sciences. Series B experimental and theoretical papers and reviews dealing with the synthesis, kinetics, catalysis, and chemical transformations of macromolecules, supramolecular structures, and polymer matrix-based composites (6 issues a year). All journal series present original papers and reviews covering all fundamental aspects of macromolecular science. Contributions should be of marked novelty and interest for a broad readership. Articles may be written in English or Russian regardless of country and nationality of authors. All manuscripts are peer reviewed
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