Poly(L-lactide)/branched β-cyclodextrin blends: Thermal, morphological and mechanical properties

被引:15
作者
Lizundia, E. [1 ]
Gomez-Galvan, F. [1 ]
Perez-Alvarez, L. [1 ,2 ]
Leon, L. M. [1 ,2 ]
Vilas, J. L. [1 ,2 ]
机构
[1] Univ Basque Country UPV EHU, Fac Sci & Technol, Dept Phys Chem, Macromol Chem Res Grp, Barrio Sarriena W-N, Leioa 48940, Spain
[2] Basque Ctr Mat Applicat & Nanostruct BCMat, Parque Tecnol Bizkaia,Ed 500, Derio 48160, Spain
关键词
Poly(L-lactide); beta-Cyclodextrin; Branched beta-cyclodextrin; Glass transition temperature; Polymer blend; Miscibility; INCLUSION COMPLEXES; POLY(LACTIC ACID); POLYLACTIC ACID; CRYSTALLIZATION; PLA; POLYMERS; SYSTEMS; SPECTROSCOPY; DEGRADATION; COMPOSITES;
D O I
10.1016/j.carbpol.2016.02.043
中图分类号
O69 [应用化学];
学科分类号
081704 ;
摘要
In this work we develop poly(L-lactide)/branched beta-cyclodextrin (b beta CD) blends in an attempt to obtain new biocompatible and biodegradable materials to be used in the emerging fields of pharmaceutical, biomedicine and food industry. Ionic branched beta-cyclodextrin (b beta CD) was obtained by polycondensation of the beta-CD monomer and it was blended with a commercially available PLLA. Fourier transform infrared spectroscopy (FTIR) has been applied to study the occurring interactions between both partners. Thermal properties of blends have been analyzed by differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA), while the phase structure of the blends was analyzed by scanning electron microscopy (SEM). Finally, dynamic mechanical analysis (DMA) has been used to provide further insights into the features controlling miscibility between PLLA and b beta CD. Results show the presence of a single phase irrespectively of the blend composition. Overall, this work opens new perspectives for the development of naturally available materials with tunable functional properties for applications in which cyclodextrins emerge as a new class of promising candidates. (C) 2016 Elsevier Ltd. All rights reserved.
引用
收藏
页码:25 / 32
页数:8
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