A Comparison of Three Different Biodegradable Aliphatic Oligoesters (PGA,PLLA, and PCL) with Similar Linear Alkyl End Groups by DSC and SAXS |
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| Authors: | José E. Báez Ángel Marcos-Fernández |
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| Affiliation: | 1. Department of Chemistry, University of Guanajuato (UG), Guanajuato, Mexico;2. Department of Polymer Physics, Elastomers and Applications Energy, Institute of Polymer Science and Technology (ICTP), the Spanish National Research Council (CSIC), Madrid, Spain |
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| Abstract: | The biodegradable aliphatic oligoesters polyglycolide (PGA), poly(L-lactide) (PLLA), and poly(?-caprolactone) (PCL) with similar number-average molecular weight Mn values but different linear alkyl end groups [CH3?[CH2?CH2]m?CH2?] were compared in terms of their physical properties, parameters such as melting temperature (Tm), crystallinity (xi), long period (L), and lamella thickness (D). They were analyzed by DSC and SAXS. The effect of a longer and nonpolar alkyl end group such as docosyl [CH3?[CH2?CH2]10?CH2?] on the long period (L) was more evident for PCL because it was the most nonpolar species in the family of oligoesters analyzed. |
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| Keywords: | Alkyl end group Oligoesters Polyglycolide Poly(L-lactide) SAXS |
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