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The micellar theory of Carl Nägeli was developed from his detailed study of starch granules in 1858. Amorphous substances such as starch and cellulose were proposed to consist of building blocks, packed in a loosely crystalline array to form what he later termed "micelles". Water could penetrate between the micelles, and new micelles could form in the interstices between old micelles. The swelling of starch grains and their growth

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