Enhanced toughness of PLLA/PCL blends using poly(d-lactide)-poly(ε-caprolactone)-poly(d-lactide) as compatibilizer
Article
Article Title | Enhanced toughness of PLLA/PCL blends using poly(d-lactide)-poly(ε-caprolactone)-poly(d-lactide) as compatibilizer |
---|---|
ERA Journal ID | 210299 |
Article Category | Article |
Authors | Xiao, Xianglian (Author), Chevali, Venkata S. (Author), Song, Pingan (Author), Yu, Bin (Author), Yang, Yihu (Author) and Wang, Hao (Author) |
Journal Title | Composites Communications |
Journal Citation | 21, pp. 1-6 |
Article Number | 100385 |
Number of Pages | 6 |
Year | 2020 |
Publisher | Elsevier |
Place of Publication | Netherlands |
ISSN | 2452-2139 |
Digital Object Identifier (DOI) | https://doi.org/10.1016/j.coco.2020.100385 |
Web Address (URL) | https://www.sciencedirect.com/science/article/pii/S2452213920301133 |
Abstract | Poly(l-lactide) (PLLA)/poly(ε-caprolactone) (PCL) blends traditionally show low ductility because of the immiscibility between PLLA and PCL. In this study, this ductility challenge was addressed by modifying the compatibility between PLLA and PCL using poly(d-lactide)-poly(ε-caprolactone)-poly(d-lactide) (PDLA-PCL-PDLA or PCDL) tri-block copolymer. PLLA/PCL and PLLA/PCL blends with 0.7 phr and 3.5 phr PCDL were prepared by melt-compounding and extrusion and analyzed. The compatibilized PLLA/PCL blend with 3.5 phr of PCDL exhibited an elongation-at-break of 43%, compared to 18% in uncompatibilized PLLA/PCL, although PLLA/PCL/PCDL3.5 showed the higher crystallinity of 10.0% compared to 3.1% in PLLA baseline. The stereocomplexation effect between PLLA and PDLA was confirmed with a melting peak of a stereocomplex crystallite at 212 °C through differential scanning calorimetry. PCDL compatibilization improved miscibility between PLLA and PCL as evidenced through the interfacial morphology analysis, and supported by the rheological analysis, which elucidated the enhanced melting viscosity and interfacial adhesion of PLLA/PCL. Overall, the compatibilization of PLLA/PCL blends with PCDL was effective in achieving an enhanced interfacial morphology and adhesion, and improved elongation-at-break. |
Keywords | Poly(l-lactide); Poly(ε-caprolactone); PDLA-PCL-PDLA; Toughness; Stereocomplex; Compatibilization |
Contains Sensitive Content | Does not contain sensitive content |
ANZSRC Field of Research 2020 | 340399. Macromolecular and materials chemistry not elsewhere classified |
401602. Composite and hybrid materials | |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | Centre for Future Materials |
Shenzhen Esun Industrial, China | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q5wq5/enhanced-toughness-of-plla-pcl-blends-using-poly-d-lactide-poly-caprolactone-poly-d-lactide-as-compatibilizer
178
total views8
total downloads0
views this month0
downloads this month