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End-Wise Degradation of Hydrocellulose in Mildly Alkaline Solutions and Its Retardation By Ammonia

 

作者: VincentL. Chiang,   KyostiV. Sarkanen,  

 

期刊: Journal of Wood Chemistry and Technology  （Taylor Available online 1985）
卷期: Volume 5, issue 2  

页码: 203-216

 

ISSN:0277-3813

 

年代: 1985

 

DOI:10.1080/02773818508085188

 

出版商: Taylor & Francis Group

 

数据来源: Taylor

 

摘要:

At pH 11 and 140°C, the rate of end-wise degradation (“peeling”) of hydrocellulose is approximately 27 percent of that in 1 N NaOH. As the pH is reduced further, the rate of peeling declines by a factor of 0.34 per pH-unit. This decline is less than expected on the basis of end-group ionization. Consequently end-wise degradation can be a significant reaction even at neutral pH.

 

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