twisted cotton yarn tex 25 u00d7 2 is treated as in example 5 but in this case the concentration of polyvinyl alcohol is 30 g l the physico chemical properties of the yarn after treatment are as follows the basic physico chemical properties of cotton yarn treated as in examples 1 through 6 illustrated the relationship between the quality of the yarn on the one hand and the type and concentration of the sizing medium and the type of yarn on the other these properties are tabulated in the following table table__________________________________________________________________________results of cotton yarn testing types of treatment no 1 no 2 no 3 no 4 no 5 no 6 no no 8 mercerized with treated with liquid ammonia and sized initial yarn liquid ammonia with carboxymethyl starch polyvinyl cellulose alcohol cotton yarn tex 29 4 25 25 u00d7 2 29 4 25 25 u00d7 2 29 4 25 25 u00d7 2serial no parameter 1 2 3 4 5 6 7 8 9__________________________________________________________________________1 mean breaking load g wt 314 4 289 8 643 8 371 2 342 5 773 427 6 440 1 406 4 405 0 888 5 901 82 mean elongation at break 34 0 24 9 34 8 12 7 10 6 14 2 12 5 12 2.