Abstract
The cross-linking reactions of acetylcelluloses having different levels of acetyl groups with pyromellitic dianhydride in homogeneous media have been investigated. A relationship has been established between the static exchange capacity (SEC) and the content of hydroxy groups in the acetylcellulose and the exterification conditions (homogeneous or heterogeneous-solid phase). It has been shown that on the interaction of acetylcellulose with pyromellitic dianhydride under homogenous conditions there is a uniform distribution of cross-linkages over the whole length of the acetylcellulose macromolecule, which enables products with high SEC values to be obtained.
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Tashkent Institute of Chemical Technology. Translated from Khimiya Prirodnykh Soedinenii, No. 4, pp. 515–520, July–August, 1999.
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Arslanov, S.S., Akmalova, G.Y. & Rakhmanberdyev, G.R. Acylation of acetylcellulose with pyromellitic dianhydride. Chem Nat Compd 35, 460–464 (1999). https://doi.org/10.1007/BF02282520
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DOI: https://doi.org/10.1007/BF02282520