Abstract:
The objectives of this research were to study the physical properties of lotus ply yarns and cord yarns classifi ed as Z on Z twist. The comparison of types of lotus stalk, the amounts of yarn aff ecting the yarn number, tenacity and elongation were studied. The experimental design used was factorial experiment in CRD. The preparation process of lotus fi ber was done by stretching method from the milky latex inside the stalk of lotus using fl ower stalks and leaf stalks. The ply yarns spun in 2 ply and 3 ply and the cord yarns spun in 2-2 ply, 2-3 ply, 3-2 ply, and 3-3 ply. The yarns were tested for physical properties according to ASTM. The results were as follows: the ply yarns had values of tenacity obtained ranged from 5.446 - 6.090 g/tex. The 2 ply yarn of fl ower stalks had the highest tenacity. The yarn number obtained was 224.878 - 270.550 tex. The values of elongation obtained ranged from 3.351 - 4.182 %. The 3 ply yarn of leaf stalks had the highest the yarn number and elongation. The cord yarns had the yarn number obtained at 456.514 - 972.144 tex. The values of tenacity obtained ranged from 2.227 - 3.994 g/tex. The 3-3 ply yarn of leaf stalks had the highest yarn number and tenacity. The values of elongation obtained were between 8.098 - 9.266 %. The 2-3 ply yarn of fl ower stalks had the
highest elongation. Ply yarns revealed that the type of the lotus stalk signifi cantly aff ected the yarn number at 0.05 level. The amount of yarn signifi cantly aff ected yarn number and elongation at 0.01 level. Cord yarns showed that the type of the lotus stalk signifi cantly aff ected yarn number at 0.01 level. The amount of yarn signifi cantly aff ected yarn number, tenacity and elongation at 0.01 level. In contrast, interaction between the types of the lotus stalk and the amounts of yarn did not statistically aff ect the properties of ply and cord yarns.