An Improved Method of Tussah Silk Reeling

Das, Subrata; Chowdhury, Subir; Das, Nilanjan

doi:10.1080/00405009208631199

Cited by 4 publications

(2 citation statements)

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“…After all, softening and reeling that are both easy to administer and gentle on the fiber are key to the material and its usability. 2 Typically, B. mori cocoons are softened by submersion in hot water. This treatment swells and partly dissolves the sericin gum, which coats and cements the fibroin filaments (brins) together in the cocoon.…”

Section: ' Introductionmentioning

confidence: 99%

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Demineralization Enables Reeling of Wild Silkmoth Cocoons

et al. 2011

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Wild Silkmoth cocoons are difficult or impossible to reel under conditions that work well for cocoons of the Mulberry silkmoth, Bombyx mori. Here we report evidence that this is caused by mineral reinforcement of Wild Silkmoth cocoons and that washing these minerals out allows for the reeling of commercial lengths of good quality fibers with implications for the development of the "Wild Silk" industry. We show that in the Lasiocampid silkmoth Gonometa postica, the mineral is whewellite (calcium oxalate monohydrate). Evidence is presented that its selective removal by ethylenediaminetetraacetic acid (EDTA) leaves the gum substantially intact, preventing collapse and entanglement of the network of fibroin brins, enabling wet reeling. Therefore, this method clearly differs from the standard "degumming" and should be referred to as "demineralizing". Mechanical testing shows that such preparation results in reeled silks with markedly improved breaking load and extension to break by avoiding the damage produced by the rather harsh degumming, carding, or dry reeling methods currently in use, what may be important for the development of the silk industries not only in Asia but also in Africa and South America.

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Section: ' Introductionmentioning

confidence: 99%

“…mori among natural silks or alternatively it is the outcome of 6000 years of selection by man for a silk with high commercial potential. After all, softening and reeling that are both easy to administer and gentle on the fiber are key to the material and its usability …”

Section: Introductionmentioning

confidence: 99%