Two Distinct Orders in Agarose Biostructural Gels : Transition Kinetics and the Role of Temperature and Isotopic Substitution
Aqueous agarose systems have been the object of much attention1–4 as a consequence of their ability to form structural gels of high biological and practical interest. Thermoreversibility and hysterical behaviour of sol-gel transitions in these systems offer a further point of interest, since they evidence the existence of marked cooperative effects in the formation/ recognition/ aggregation/ stabilization of molecular and supramolecular patterns. Understanding the underlying physical processes may have very wide implications. In these systems gelation occurs already at a polysaccharide concentration of a fraction of a % w/v through the formation of a molecular order (double helices) and a supramolecular order (bundles)1.
KeywordsMethylene Blue Solitary Wave Correlation Length Isotopic Substitution Apparent Optical Density
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