To obtain fully degradable and super-tough poly(lactide-co-glycolide) (PLGA) blends, biodegradable star-shaped PCL--PDLA plasticizers were synthesized using natural originated xylitol as initiator. These plasticizers were blended with PLGA to prepare transparent thin films. Effects of added star-shaped PCL--PDLA plasticizers on mechanical, morphological, and thermodynamic properties of PLGA/star-shaped PCL--PDLA blends were investigated. The stereocomplexation strong cross-linked network between PLLA segment and PDLA segment effectively enhanced interfacial adhesion between star-shaped PCL--PDLA plasticizers and PLGA matrix. With only 0.5 wt% addition of star-shaped PCL--PDLA (Mn = 5000 g/mol), elongation at break of the PLGA blend reached approximately 248%, without any considerable sacrifice over excellent mechanical strength and modulus of PLGA.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10302089 | PMC |
| http://dx.doi.org/10.3390/polym15122617 | DOI Listing |
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