𝔖 Bobbio Scriptorium
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The conformation of the anhydrocellobiose units in cellulose I and II

✍ Scribed by N. J. Chü

Publisher
John Wiley and Sons
Year
1970
Tongue
English
Weight
392 KB
Volume
14
Category
Article
ISSN
0021-8995

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✦ Synopsis

Abstract

It is postulated from energetic considerations that the anhydrocellobiose unit in cellulose I has a conformation differing from that in cellulose II. Conformation I has two intramolecular hydrogen bonds, while conformation II has only one. This difference arises from a different orientation of the C(6)‐hydroxyl group in the two conformations. Their interconversion is shown to be dependent upon the polarity of the medium. The assignment of conformation I to cellulose I and conformation II to cellulose II and the equilibrium between them appear to be consistent with a number of experimental observations reported in the literature.

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✍ Hans-Peter Fink; Burkart Philipp 📂 Article 📅 1985 🏛 John Wiley and Sons 🌐 English ⚖ 699 KB

Supermolecular structure of linters cellulose at the cellulose 1-11 phase transition is investigated by wide-angle X-ray scattering (quantitative phase analysis, degree of crystallinity by the method of Ruland and Vonk, and lateral crystallite sizes via peak separation by Pearson VII functions). A s