Abstract
AbstractConformational energy maps have been calculated for α‐D‐mannuronic acid (1–4) α‐L‐guluronic acid and for α‐L‐guluronic acid (1–4) β‐D‐mannuronic acid. These have been used, together with maps previously calculated for the homomonomeric dimers, to estimate the characteristic ratios and Kuhn lengths of the alternating copolymer and of a stochastic copolymer similar in composition to that extracted from L. digitata.The results show that the alternating copolymer is less extended than either homopolymer. Kuhn lengths calculated for the stochastic copolymer agree well with experimental results on high ionic strength solutions of alginate isolated from L digitata.
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