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At present, polylactide (PLA) film with high toughness is on expectation, but in general, it is brittle with 45 MPa tensile strength and only 3% elongation at break. The present work clarifies that isotropically small crystalline lamellae is the key microstructure to obtain super-tough PLA (180 MPa tensile strength and 80% elongation at break). The systematic study on two parameters of biaxial-stretching...
High-molecular-weight poly(l-lactic acid) (PLLA) and poly(d-lactic acid) (PDLA) are blended at different ratios and their crystallization behavior was investigated. Solely homo-crystallites mixtures of PLLA and PDLA were synchronously and separately formed during isothermal crystallization in the temperature (T c ) range of 90–130 °C, irrespective of blending ratio, whereas in addition to...
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