Environmentally degradable finely attenuated fibers produced by melt
spinning a composition comprising destructurized starch, a biodegradable thermoplastic
polymer, and a plasticizer are disclosed. The present invention is also directed
to highly attenuated fibers containing thermoplastic polymer microfibrils which
are formed within the starch matrix of the finely attenuated fiber. Nonwoven webs
and disposable articles comprising the highly attenuated fibers are also disclosed.