The polarized infrared spectra of one‐way and two‐way oriented polypropylene films have been investigated and compared to nonoriented films. Evidence has been compiled to show that an amorphous helical isotactic structure is nonexistent, and that it is through the crystallization process that nonhelical isotactic polypropylene is converted to helical isotactic polypropylene.
No takes yet. Share an insight, caveat, or question.
Paul G. Schmidt (1963) studied this question.
Synapse has enriched 5 related papers. Consider them for comparative context: