Shape-Memory Behavior of Poly(L-Lactide)/Poly(ε-Caprolactone) Blends
- 1 June 2011
- journal article
- Published by Trans Tech Publications, Ltd. in Advanced Materials Research
- Vol. 266, 171-174
- https://doi.org/10.4028/www.scientific.net/amr.266.171
Abstract
Poly(L-lactide) and poly(ε-caprolactone) (PLLA/PCL) blends with various weight ratios were compounded by melt mixing and their shape memory properties were investigated. The thermal properties, surface morphology and dynamic mechanical properties of the blends were characterized. The results demonstrate that the introduction of PCL improves the process of crystallization of PLLA whereas the reverse situation is for PCL. PLLA/PCL blends were found to exhibit an immiscible behavior from the characterizations of surface morphology. DMA tests show the blends with different weight ratios have different transition temperatures. The properties of blends provide the basis of owning shape memory behavior. The strain recovery ratio (Rr) of PLLA/PCL blend with the weight ratio of 1:3 was about 95% within 22s, whereas the Rr of other blends were less than 75% within 23~30s. It was found that lower transition temperature combined with increased crystallization of PLLA with the increasing PCL content contribute to such a good shape memory effect.Keywords
This publication has 15 references indexed in Scilit:
- Shape memory effect of poly(d,l-lactide)/Fe3O4 nanocomposites by inductive heating of magnetite particlesColloids and Surfaces B: Biointerfaces, 2009
- Biodegradable Multiblock Copolymers Based on Oligodepsipeptides with Shape‐Memory PropertiesMacromolecular Bioscience, 2008
- Effect of In vitro degradation of poly(D,L‐lactide)/β‐tricalcium composite on its shape‐memory propertiesJournal of Biomedical Materials Research Part B: Applied Biomaterials, 2007
- Crystallization, morphology, and mechanical behavior of polylactide/poly(ε‐caprolactone) blendsPolymer Engineering & Science, 2006
- Shape memory properties of poly(d,l-lactide)/hydroxyapatite compositesBiomaterials, 2006
- Biodegradable shape‐memory polymer—polylactide‐co‐poly(glycolide‐co‐caprolactone) multiblock copolymerPolymers for Advanced Technologies, 2005
- Shape Memory Effect of Bacterial Poly[(3‐hydroxybutyrate)‐co‐(3‐hydroxyvalerate)]Macromolecular Rapid Communications, 2005
- Mechanical and shape memory behavior of composites with shape memory polymerComposites Part A: Applied Science and Manufacturing, 2004
- Shape memory polymer nanocompositesActa Materialia, 2002
- Biodegradable, Elastic Shape-Memory Polymers for Potential Biomedical ApplicationsScience, 2002