Journal of Polymers and the Environment

, Volume 19, Issue 1, pp 59–68 | Cite as

Thermal and Biodegradable Properties of Poly(l-lactide)/Poly(ε-Caprolactone) Compounded with Functionalized Organoclay

Original Paper


Poly(l-lactide) (PLLA)/Poly(ε-caprolactone) (PCL) blends were compounded with commercially available organoclay Cloisite 25A (C25A) and C25A functionalized with epoxy groups, respectively. Epoxy groups on the surface of C25A were introduced by treating C25A with (glycidoxypropyl)trimethoxy silane (GPS) to produce so called Functionalized Organoclay (F-C25A). The silicate layers of PLLA/PCL/F-C25A were exfoliated to a larger extent than PLLA/PCL/C25A. Incorporation of the epoxy groups on C25A improved significantly mechanical properties of PLLA/PCL/C25A. The larger amount of exfoliation of the silicate layers in PLLA/PCL/F-C25A as compared with that in PLLA/PCL/C25A was attributed to the increased interfacial interaction between the polyesters and the clay due to chemical reaction. Thermo gravimetric analysis revealed that the nanocomposites with exfoliated silicate layers were more thermally stable than those with intercalated silicate layers. The biodegradability of the neat PLLA/PCL and corresponding nanocomposite was studied under compost, and the rate of biodegradation of PLLA/PCL increased after nanocomposite preparation.


Poly(l-lactide) Poly(ε-caprolactone) Clay Functionalization Biodegradation 



The authors gratefully acknowledge financial support of this work coming from Natural Science Foundation of China (NSFC) (No. 21074009) and Young Foundation of Beijing University of Chemical Technology.


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Copyright information

© Springer Science+Business Media, LLC 2010

Authors and Affiliations

  1. 1.Key Laboratory on Preparation and Processing of Novel Polymer Materials of BeijingBeijing University of Chemical TechnologyBeijingChina
  2. 2.Department of Polymer Science and EngineeringInha UniversityIncheonKorea

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