Characterization of the Polylactic acid stretched uniaxial and annealed by Raman spectrometry and Differential scanning calorimetry

Simultaneously enhancing the crystallization rate and fire retardancy of poly(lactic acid) by using a novel bifunctional additive trimethylamine phenylphosphonate

“…Fig. 6B shows the Raman spectra of samples, the observed wavenumbers of PLA/TEAP composites are the same with PLA, and the Raman bands at 922 cm À1 and 538 cm À1 are also associated with crystalline phase corresponding to a helical conformation (a form), 42 this result further conrmed that the addition of TEAP did not affect the crystal structure of PLA when samples complete crystallization at 125 C. The effect of TEAP on microstructure parameters of PLA was characterized by SAXS. Fig.…”