Abstract
Poly (d,l-lactic acid) (PDLLA) was combined with α-CD to form inclusion complexes (ICs) with distinct PDLLA fractions. The structural changes resulting from this coalescence process were analyzed by Fourier transform infrared spectroscopy (FTIR), proton nuclear magnetic resonance (1H NMR), and X-ray diffraction (XRD). The presence of both components in the ICs was confirmed by FTIR. The encapsulated PDLLA fraction was quantified by 1H NMR. XRD data evidenced that it was possible to transform the amorphous PDLLA into a well-organized channel-type crystalline structure. DSC showed that the glass transition temperature of the PDLLA fraction in the ICs was higher than in the pure polymer, indicating that the ultra-confinement effect imposed by the ICs organization clearly limits PDLLA molecular dynamics. The confinement effect on the glass transition dynamics was investigated by unconventional dynamic mechanical analysis experiments, which confirmed that ICs segmental mobility is highly restricted when compared with the one of pure PDLLA. Bulk PDLLA presents a typical VFTH behavior while the ICs dynamics shows an Arrhenius trend.
Similar content being viewed by others
References
Jeong S, Kang WY, Song CK, Park JS (2012) Supramolecular cyclodextrin–dye complex exhibiting selective and efficient quenching by lead ions. Dyes Pigments 93:1544–1548
Wang L, Wang JL, Dong CM (2005) Supramolecular inclusion complexes of star-shaped poly(ε-caprolactone) with α-cyclodextrin. J Polym Sci A Polym Chem 43:4721–4730
Ceborska M, Asztemborska M, Lipkowski J (2012) Rare ‘head-to-tail’ arrangement of guest molecules in the inclusion complexes of (+)- and (−)-menthol with β-cyclodextrin. Chem Phys Lett 553:64–67
Celebioglu A, Uyar T (2011) Electrospinning of polymer-free nanofibers from cyclodextrin inclusion complexes. Langmuir 27:6218–6226
Castiglione F, Crupi V, Majolino D, Mele A, Rossi B, Trotta F et al (2012) Inside new materials: an experimental numerical approach for the structural elucidation of nanoporous cross-linked polymers. J Phys Chem B 116:13133–13140
Williamson BR, Krishnaswamy R, Tonelli AE (2011) Physical properties of poly(ε-caprolactone) coalesced from its α-cyclodextrin inclusion compound. Polymer 52:4517–4527
Zhang S, Yu Z, Govender T, Luo H, Li B (2008) A novel supramolecular shape memory material based on partial α-CD–PEG inclusion complex. Polymer 49:3205–3210
Pinheiro A, Mano JF (2009) Study of the glass transition on viscous-forming and powder materials using dynamic mechanical analysis. Polym Test 28:89–95
Mano JF (2008) Thermal behaviour and glass transition dynamics of inclusion complexes of α-cyclodextrin with poly(d,l-lactic acid). Macromol Rapid Commun 29:1341–1345
Tonelli AE (2012) Superstructures with cyclodextrins: chemistry and applications. Beilstein J Org Chem 8:1318–1332
Richert R (2011) Dynamics of nanoconfined supercooled liquids. Annu Rev Phys Chem 62:65–84
Korotkova T, Karaeva O, Naberezhnov A, Rysiakiewichz-Pasek E, Korotkov L (2012) Dielectric and mechanical relaxations in the vicinity of glass transitions in confined polar copolymers VDF/Te and VDF/Tr. Solid State Commun 152:846–848
Richert R (2011) Dynamics of nanoconfined supercooled liquids. Annu Rev Phys Chem 62:65–84
McKenna GB (2010) Ten (or more) years of dynamics in confinement: perspectives for 2010. Eur Phys J Spec Top 189:285–302
Modestino MA, Paul DK, Dishari S, Petrina SA, Allen FI, Hickner MA et al (2013) Self-assembly and transport limitations in confined Nafion films. Macromolecules 46:867–873
Zuza E, Ugartemendia JM, Lopez A, Meaurio E, Lejardi A, Sarasua JR (2008) Glass transition behavior and dynamic fragility in polylactides containing mobile and rigid amorphous fractions. Polymer 49:4427–4432
Wang Y, Gómez Ribelles JL, Salmerón Sánchez M, Mano JF (2005) Morphological contributions to glass transition in poly(l-lactic acid). Macromolecules 38:4712–4718
Delpouve N, Lixon C, Saiter A et al (2009) Amorphous phase dynamics at the glass transition in drawn semi-crystalline polyester. J Therm Anal Calorim 97:541–546
Delpouve N, Saiter A, Dargent E (2011) Cooperativity length evolution during crystallization of poly(lactic acid). Eur Polym J 47:2414–2423
Hamonic F, Saiter A, Prevosto D et al (2012) Temperature dependence of structural relaxation time in drawn polymers: which is the role of cooperativity? AIP Conf Proc 1459:211–213
Chen C-C, Chueh J-Y, Tseng H, Huang H-M, Lee S-Y (2003) Preparation and characterization of biodegradable PLA polymeric blends. Biomaterials 24:1167–1173
Kister G, Cassanas G, Vert M (1998) Effects of morphology, conformation and configuration on the IR and Raman spectra of various poly (lactic acid). Polymer 39:267–273
Matusik J, Stodolak E, Bahranowski K (2011) Synthesis of polylactide/clay composites using structurally different kaolinites and kaolinite nanotubes. Appl Clay Sci 51:102–109
Meaurio E, Lopez-Rodriguez N, Sarasua J (2006) Infrared spectrum of poly (l-lactide): application to crystallinity studies. Macromolecules 39:9291–9301
Tonelli AE (2012) Restructuring polymers via nanoconfinement and subsequent release. Beilstein J Org Chem 8:1318–1332
Dias JCR. Desenvolvimento de um fio de sutura degradável baseado em PLLA com libertação controlada de fármacos. Master Thesis, Universidade do Minho, Portugal, 2011
Correia C, Moreira Teixeira LS, Moroni L, Reis RL, van Blitterswijk C, Karperien M et al (2011) Chitosan scaffolds containing hyaluronic acid for cartilage tissue engineering. Tissue Eng Part C 17:717–730
Liu X, Zou Y, Li W, Cao G, Chen W (2006) Kinetics of thermo-oxidative and thermal degradation of poly(d,l-lactide) (PDLLA) at processing temperature. Polym Degrad Stab 91:3259–3265
Faucci MT, Melani F, Mura P (2000) 1H-NMR and molecular modelling techniques for the investigation of the inclusion complex of econazole with α-cyclodextrin in the presence of malic acid. J Pharm Biomed Anal 23:25–31
Anselmi C, Centini M, Maggiore M, Gaggelli N, Andreassi M, Buonocore A et al (2008) Non-covalent inclusion of ferulic acid with α-cyclodextrin improves photo-stability and delivery: NMR and modeling studies. J Pharm Biomed Anal 46:645–652
Huang L, Allen E, Tonelli AE (1998) Study of the inclusion compounds formed between α-cyclodextrin and high molecular weight poly(ethylene oxide) and poly(ε-caprolactone). Polymer 39:4857–4865
Mori T, Dong T, Yazawa K, Inoue Y (2007) Preparation of highly transparent and thermally stable films of α-cyclodextrin/polymer inclusion complexes. Macromol Rapid Commun 28:2095–2099
Wenz G, Han B-H, Mueller A (2006) Cyclodextrin rotaxanes and polyrotaxanes. Chem Rev 106:782–817
Wang Y, Gómez Ribelles JL, Salmerón Sánchez M, Mano JF (2005) Morphological contributions to glass transition in poly(l-lactic acid). Macromolecules 38:4712–4718
McKenna GB (2005) Effects of confinement on material behaviour at the nanometre size scale. J Phys Condens Matter 17:R261–R524
Eastman SA, Kim S, Page KA, Rowe BW, Kang S, Soles CL et al (2012) Effect of confinement on structure, water solubility, and water transport in Nafion thin films. Macromolecules 45:7920–7930
Mano JF, Gómez Ribelles JL, Alves NM, Salmerón Sanchez M (2005) Glass transition dynamics and structural relaxation of PLLA studied by DSC: influence of crystallinity. Polymer 46:8258–8265
Wool RP, Campanella A (2009) Twinkling fractal theory of the glass transition: rate dependence and time–temperature superposition. J Polym Sci Part B Polym Phys 47:2578–2590
Mano JF (2007) Structural evolution of the amorphous phase during crystallization of poly(l-lactic acid): A synchrotron wide-angle X-ray scattering study. J Non-Cryst Solids 353:2567–2572
Huh KM, Cho YW, Chung H, Kwon IC, Jeong SY, Ooya T, Lee WK, Sasaki S, Yui N (2004) Supramolecular hydrogel formation based on inclusion complexation between poly(ethylene glycol)-modified chitosan and α-cyclodextrin. Macromol Biosci 4:92–99
Dionisio M, Viciosa MT, Wang Y, Mano JF (2005) Macromol Rapid Commun 26:1423
Lixon C, Delpouve N, Saiter A et al (2008) Evidence of cooperative rearranging region size anisotropy for drawn PET. Eur Polym J 44:3377–3384
Delpouve N, Saiter A, Mano JF et al (2008) Cooperative rearranging region size in semi-crystalline poly(l-lactic acid). Polymer 49:3130–3135
Narladkar A, Balnois E, Vignaud G, Grohens Y (2008) Difference in glass transition behavior between semi crystalline and amorphous poly(lactic acid) thin films. Macromol Symp 273:146–152
Acknowledgments
Portuguese Foundation for Science and Technology (FCT) for financial support through the PTDC/FIS/115048/2009 project and to the NMR Portuguese network (PTNMR, Bruker Avance III 400-Univ. Minho). FCT and FEDER (European Fund for Regional Development)-COMPETE-QREN-EU for financial support to the Research Centre, CQ/UM [PEst-C/QUI/UI0686/2011 (FCOMP-01-0124-FEDER-022716)].
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Oliveira, T., Botelho, G., Alves, N.M. et al. Inclusion complexes of α-cyclodextrins with poly(d,l-lactic acid): structural, characterization, and glass transition dynamics. Colloid Polym Sci 292, 863–871 (2014). https://doi.org/10.1007/s00396-013-3127-2
Received:
Revised:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s00396-013-3127-2