Abstract
We made the wheat starched yarn bundles of the filaments of different denier, and examined the various physical properties.(1) Applying Euler's formula concerning the buckling of long pillar to calculate the flexual rigidity and Young's modulus, they were found increased in proportion to the number of filaments.(2) Golden & Rankine's formula were applied to obtain more detailed properties.(3) By means of cantilever, Young's modulus was again calculated.(4) Like in the previously reported, case the constricting elasticity was measured, and the similar tendeney was obtained.(5) We measured the quantity of starch of each sample, and found increased in proportion to the number of filaments.(6) In consideration of the above, we found that the effective degree in sizing increased as the number of filaments is increased.
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