Jean-Sébastien Hébert, Paula Wood-Adams, Marie-Claude Heuzey, Charles Dubois and Josée Brisson Morphology of polylactic acid crystallized during annealing after uniaxial deformation Journal of Polymer Science Part B: Polymer Physics 51
L-Polylactic acid (PLLA) exhibits polymorphism, and its crystallinity is affected by deformation and annealing time. A comparison of the deformation of PLLA is reported under two uniaxial stretching temperatures (70 °C, or Tg + 10 and 90 °C, or Tg + 30) and two different post-deformation annealing times (15 and 45 min). Longer times give insight on changes in morphology post-deformation. Wide-angle X-ray diffraction and differential scanning calorimetry were used to investigate changes in orientation, crystallinity, and relative crystal size/order.
Complete the form below and we will send an e-mail message containing a link to the selected article on your behalf