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Title of Journal: Cellulose

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Abbravation: Cellulose

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Kluwer Academic Publishers

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DOI

10.1007/bf01766023

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1572-882X

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Reactions between cellulose diacetate and alkenyls

Authors: Tsuyoshi Takihara Yutaka Yoshida Akira Isogai
Publish Date: 2007/02/14
Volume: 14, Issue: 4, Pages: 357-366
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Abstract

Cellulose diacetate CDA with degree of substitution DS of 24 was dissolved in dimethylsulfoxide and reacted with octadecenyl succinic anhydrides OSAs using 1methylimidazole as a promoter FTIR and 1HNMR analysis of the reaction products revealed that halfesterification occurred on residual hydroxyl groups of CDA by OSA providing CDA/octadecenyl succinic acid OSAcid half esters at yields of more than 90 The effects of reaction time and temperature on DS of CDA/OSAcid esters were studied in detail The higher the reaction temperature the higher the esterification rate to form CDA/OSAcid half esters The maximum DS values were 041 and 033 for CDA/nOSAcid and CDA/iOSAcid esters respectively The original Xray diffraction pattern of CDA changed with the introduction of OSAcid substituents into CDA and CDA/OSAcid esters seemed to have thermoplasticity depending on DS and the chemical structure of the OSAcids A soilembedding test of films of CDA and CDA/OSAcid esters indicated that the CDA/OSAcid esters that were prepared maintained the biodegradability of the original CDA

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