Certain Physical Properties of Selected Samples of Chemically Modified Cottons 1

Measurements are given on certain physical properties of fibers and yarns for cottons which were chemically modified by mercerization, ethylamine decrystallization, aminiza tion, carboxymethylation, acetylation, and cyanoethylation. The changes in physical properties are shown to be affected by the type of modification, the extent of reaction, and the tensional forces on the yarns during the treatment. A spread in the per cent change was found when untreated cottons with their natural noncellulosic constituents were chemically treated under controlled conditions.