Grafting of Methacryl amide onto .GAMMA.-irradiated silk fiber and several physical properties of the grafted-silk.

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  • γ線照射した絹糸のメタクリルアミドグラフト加工および加工絹糸の特性
  • ガンマセン ショウシャシタ ケンシ ノ メタクリルアミド グラフト カコウ オ
  • 絹の放射線グラフト加工に関する研究 第4報

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Strength-strain measurement and DSC were carried out in order to analyze the physical properties of Methacryl amide (MAA)-grafted silk fibers, which had been degummed and irradiated with gamma rays (total dose of gamma rays 1.05 Mrad) prior to the MAA graft processing.<br>Strength, elongation, initile tensile resistance and tensile elasticity of MAA-grafted silk fibers were very similar to those of untreated silk fibers. The degree of grafting for MAA-grafted silk was about 40-42% regardless of gamma irradiation treatment, while the denier of grafted silk was about 30% greater than that of untreated silk fiber. Water content and humidity absorption power of the silk fiber markedly increased by the MAA grafting. However, strength and elongation of MAA-grafted silk fiber decreased appeciably compared with the untreated silk fiber. Initial tensile resistance and tensile elasticity of MAA-grafted silk fiber remained unchaged even after MAA grafting. Tensile elasticity of MAA-grafted silk fiber which had been irradiated with gamma rays and successively degummed slightly increased with the other MAA-grafted silk fibers.

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