Phoenix Tiller, Seonghyun Park, John Sanders, Trevor Treasure, Sunkyu Park
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The cotton linter pulps and artificial fines blends were used to generate acetates which were characterized via degree of substitution measurement by FTIR, the ensuing weight fraction of acetone insoluble substance, and the filtration rate of the acetate. A test to measure the amount of sulfuric acid insoluble substances (SIS) was developed to explain the formation of insoluble gel particles in acetate media; an R<sup>2</sup> of 0.97 was found between fines and resulting SIS. Then, SIS contents were correlated with the acetone insoluble substances in the acetates (R<sup>2</sup> = 0.98). Fines contents were found to be highly influential on the acetate’s degree of substitution, insoluble substance content, and filtration rate (R<sup>2</sup> = 0.99). Thorough activation and excess acetic anhydride reagent were found to limit the effects of fines on degree of substitution.</p><h3>Graphical abstract</h3>\n<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":511,"journal":{"name":"Cellulose","volume":"32 5","pages":"2989 - 3005"},"PeriodicalIF":4.9000,"publicationDate":"2025-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10570-025-06449-3.pdf","citationCount":"0","resultStr":"{\"title\":\"Evaluating the quality and processability of cotton linter-derived cellulose acetate by characterization of native and artificial fines\",\"authors\":\"Phoenix Tiller, Seonghyun Park, John Sanders, Trevor Treasure, Sunkyu Park\",\"doi\":\"10.1007/s10570-025-06449-3\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>Understanding the chemical characteristics and residual impurities of a dissolving pulp feedstock is necessary to enhance both the quality and processability of yielded cellulose acetates. Fiber fractionation was performed with three different cotton linter feedstocks. Biomass compositional analysis and fiber quality analysis were used to determine the carbohydrate content of the fractionated fibers and the quantity of fines. To evaluate the impact of fines on the acetylation of cotton linters, artificial fines were prepared from fractionated long fibers and added back to long fibers in varying fines content blends. The cotton linter pulps and artificial fines blends were used to generate acetates which were characterized via degree of substitution measurement by FTIR, the ensuing weight fraction of acetone insoluble substance, and the filtration rate of the acetate. A test to measure the amount of sulfuric acid insoluble substances (SIS) was developed to explain the formation of insoluble gel particles in acetate media; an R<sup>2</sup> of 0.97 was found between fines and resulting SIS. Then, SIS contents were correlated with the acetone insoluble substances in the acetates (R<sup>2</sup> = 0.98). Fines contents were found to be highly influential on the acetate’s degree of substitution, insoluble substance content, and filtration rate (R<sup>2</sup> = 0.99). 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Evaluating the quality and processability of cotton linter-derived cellulose acetate by characterization of native and artificial fines
Understanding the chemical characteristics and residual impurities of a dissolving pulp feedstock is necessary to enhance both the quality and processability of yielded cellulose acetates. Fiber fractionation was performed with three different cotton linter feedstocks. Biomass compositional analysis and fiber quality analysis were used to determine the carbohydrate content of the fractionated fibers and the quantity of fines. To evaluate the impact of fines on the acetylation of cotton linters, artificial fines were prepared from fractionated long fibers and added back to long fibers in varying fines content blends. The cotton linter pulps and artificial fines blends were used to generate acetates which were characterized via degree of substitution measurement by FTIR, the ensuing weight fraction of acetone insoluble substance, and the filtration rate of the acetate. A test to measure the amount of sulfuric acid insoluble substances (SIS) was developed to explain the formation of insoluble gel particles in acetate media; an R2 of 0.97 was found between fines and resulting SIS. Then, SIS contents were correlated with the acetone insoluble substances in the acetates (R2 = 0.98). Fines contents were found to be highly influential on the acetate’s degree of substitution, insoluble substance content, and filtration rate (R2 = 0.99). Thorough activation and excess acetic anhydride reagent were found to limit the effects of fines on degree of substitution.
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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