Abstract
Introduction of sc-PLA crystals as small nuclei or large sc-PLA spherulites has great influence on patterning the inter-phase boundaries and reducing the cracks in crystallized PLLA in mixtures with PDLA. Unmelted sc-PLA crystals as nuclei induce cracks in later-crystallized PLLA, whereas co-crystallization of PLLA with PDLA to develop simultaneous PLLA and sc-PLA spherulites is effective in altering the inter-phases for minimizing the cracks. PLLA co-crystallized with sc-PLA spherulites tends to be more compact than PLLA spherulites crystallizing on sc-PLA nuclei. In general, the sc-PLA spherulites suppress the occurrence of a stressed interphase in PLLA spherulites and the depth of cooling-induced cracks is also decreased.
| Original language | English |
|---|---|
| Pages (from-to) | 1663-1670 |
| Number of pages | 8 |
| Journal | Macromolecular Chemistry and Physics |
| Volume | 212 |
| Issue number | 15 |
| DOIs | |
| Publication status | Published - 2 Aug 2011 |
| Externally published | Yes |
Keywords
- PLLA
- cracks
- nucleation
- spherulites
- stereocomplexes
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