Isotactic Polymer

A polymer structure in which there is a regular spatial or stereo relationship from one repeat unit to the next. (Also see ATACTIC POLYMER SYNDIOTACTIC POLYMER and TACTIC POLYMER.)

Isotherm

Constant temperature line used on graphs of climatic conditions or thermodynamic relations such as pressure-volume relations at constant temperature.

Isotropic

Having the same physical properties in every direction in the plane of a fabric. It is related to the random distribution of fibers in nonwoven manufacture. © 2001 Celanese Acetate LLC J

Issit's shaker

A machine used for shaking shoddy reclaimed from under carding engines to remove dirt.

Istle

Generic Mexican term for various species of agave.

Italian

A cotton fabric of five-end sateen weave with a lustrous finish, used chiefly as a lining material. Examples were 30x49; 16x17tex; K=12.0+20.2 or 33x47; R15/2x16tex; K=12.8+18.8.

Ixtle (fibre)

Generic Mexican term for various species of agave.