Description:
<jats:title>Abstract</jats:title><jats:p>The deformation behavior of initially amorphous films of nylons 11, 66, and 12 has been studied at drawing temperatures above and below the glass transition temperature. Evidence has been found that the glass transition temperature in polyamides is connected with a disruption of the hydrogen‐bonded network. In addition these experiments indicate that the kind of hydrogen‐bonded network present in the crystalline state determines whether the orientation of the crystallites in film specimens drawn below the glass transition temperature is uniaxial or biaxial.</jats:p>