Confirmation of disorder a form of poly(L-lactic acid) by the X-ray fiber pattern and polarized IR/Raman spectra measured for uniaxially-oriented samples

In the present research, we report for the first time the X-ray fiber pattern and polarized IR/Raman spectra taken for the uniaxially oriented disorder a form of PLLA, which can confirm the existence of the disorder PLLA alpha form (alpha'-form) and provide some new insight on the structural difference between the order and disorder alpha forms.