Advertisement

Tough and tunable shape memory PLA/PAE melt-blends actuated by temperature

  • Zhenfang LiEmail author
  • Kangning Li
  • Haihua He
  • Yufen Zhou
  • Zhicai HeEmail author
Original Research
  • 35 Downloads

Abstract

Development of shape memory materials are very important due to their scientific and technological values. Typically, poly(lactic acid) (PLA) has received increasing attentions because of shape memory properties and biodegradability, however, its semi-crystalline structure restricts its shape recovery ratio and toughness both. Herein, we report a reinforced PLA-based elastomer material prepared by physical blending with different weight ratios of polyamide elastomer (PAE). After the modification, PLA/PAE elastomers show excellent shape recovery (> 99%) from ~ 25 to ~ 70 °C and toughness (impact strength ~ 50 kJ/m2). By regulating the weight ratio of PAE at 10 wt%, the resulting PLA/PAE elastomers showed relative low glass transition temperature (Tg) at ~ 61 °C versus pure PLA (~ 65 °C). Besides, the storage modulus (E′) decreased to ~ 8000 MPa (at 10 wt% PAE) indicated that PAE weakened the PLA crystallinity and promoted its toughness. Comparing with pure PLA, PLA/PAE elastomers showed almost 45% decrease on loss modulus (E″), which indicated that elasticity and shape recovery behavior have been promoted. With the increase of PAE ratio in PLA/PAE elastomers, the initial recovery temperature of blends showed decreasing trend, which indicated that blends are more helpful for shape recovery actuated by temperature. This work provided a new PLA/PAE elastomer with stronger toughness and faster thermo-induced shape recovery that may show great potential for fundamental research and biomedical applications.

Keywords

Poly(lactic acid) Polyamide elastomer Physical blend Shape memory Toughness Repeatability 

Notes

Acknowledgements

This study was financially supported by the Zhejiang Province Public Welfare Project (no. 2017C31112).

Supplementary material

13726_2019_706_MOESM1_ESM.docx (19 kb)
Supplementary material 1 (DOCX 19 KB)

References

  1. 1.
    Lendlein A, Jiang H, Junger O, Langer R (2005) Light-induced shape-memory polymers. Nature 434:879–882CrossRefGoogle Scholar
  2. 2.
    Fan X, Chung JY, Lim YX, Li Z, Loh XJ (2016) Review of adaptive programmable materials and their bioapplications. ACS Appl Mater Interfaces 8:33351–33370CrossRefGoogle Scholar
  3. 3.
    Zhu Y, Hu J, Luo H, Young RJ, Deng L, Zhang S, Fan Y, Ye G (2012) Rapidly switchable water-sensitive shape-memory cellulose/elastomer nano-composites. Soft Matter 8:2509–2517CrossRefGoogle Scholar
  4. 4.
    Liu C, Qin H, Mather PT (2007) Review of progress in shape-memory polymers. J Mater Chem 17:1543–1558CrossRefGoogle Scholar
  5. 5.
    Li Z, Yuan D, Jin G, Tan BH, He C (2016) Facile layer-by-layer self-assembly towards enantiomeric PLA stereocomplex coated magnetite nanocarrier for highly tunable drug deliveries. ACS Appl Mater Interfaces 8:1842–1853CrossRefGoogle Scholar
  6. 6.
    Li Z, Tan BH, Lin T, He C (2016) Recent advances in stereocomplexation of enantiomeric PLA-based copolymers and applications. Prog Polym Sci 62:22–72CrossRefGoogle Scholar
  7. 7.
    Kalita H, Karak N (2012) Bio-based elastomeric hyperbranched polyurethanes for shape memory application. Iran Polym J 21:263–271CrossRefGoogle Scholar
  8. 8.
    Fan X, Win KY, Hu Z, Loh XJ, Li Z (2018) Precise synthesis of PS-PLA janus star-like copolymer. Macromol Rapid Commun 40:1800217.  https://doi.org/10.1002/marc.201800217 CrossRefGoogle Scholar
  9. 9.
    You J, Fu H, Dong W, Zhao L, Cao X, Li Y (2012) Shape memory performance of thermoplastic polyvinylidene fluoride/acrylic copolymer blends physically cross-linked by tiny crystals. ACS Appl Mater Interfaces 4:4825–4831CrossRefGoogle Scholar
  10. 10.
    Shpeizman VV, Yakushev PN, Peschanskaya NN, Mukhina ZV, Shvedov AS, Cheremisov VG, Smolyanskii AS (2012) Micro- and nanoscale instabilities of deformation in polymers. Phys Solid State 54:1229–1234CrossRefGoogle Scholar
  11. 11.
    Fan X, Cao M, Zhang X, Li Z (2017) Synthesis of star-like hybrid POSS-(PDMAEMA-b-PDLA)8 copolymer and its stereocomplex properties with PLLA. Mater Sci Eng C 76:211–216CrossRefGoogle Scholar
  12. 12.
    Liu R, Li Y, Liu Z (2018) Experimental study of thermo-mechanical behavior of a thermosetting shape-memory polymer. Mech Time Depend Mater 1:1–18Google Scholar
  13. 13.
    Tan BH, Muiruri JK, Li Z, He C (2016) Recent progress in using stereocomplexation for enhancement of thermal and mechanical property of polylactide. ACS Sustain Chem Eng 4:5370–5391CrossRefGoogle Scholar
  14. 14.
    Hao X, Kaschta J, Liu X, Pan Y, Schubert DW (2015) Entanglement network formed in miscible PLA/PMMA blends and its role in rheological and thermo-mechanical properties of the blends. Polymer 80:38–45CrossRefGoogle Scholar
  15. 15.
    Fan X, Tan BH, Li Z, Xian JL (2017) Control of PLA stereoisomers-based polyurethane elastomers as highly efficient shape memory materials. ACS Sustain Chem Eng 5:1217–1227CrossRefGoogle Scholar
  16. 16.
    Wang W, Jin Y, Yang X, Su Z (2010) Chain orientation and distribution in ring-banded spherulites formed in poly(ester urethane) multiblock copolymer. J Polym Sci Pol Phys 48:541–547CrossRefGoogle Scholar
  17. 17.
    Zheng X, Zhou S, Yu X, Li X, Feng B, Qu S, Weng J (2008) Effect of in vitro degradation of poly(d,l-lactide)/β-tricalcium composite on its shap-memory properties. J Biomed Mater Res B 86:170–180CrossRefGoogle Scholar
  18. 18.
    Elias KL, Price RL, Webster TJ (2002) Enhanced functions of osteoblasts on nanometer diameter carbon fibers. Biomaterials 23:3279–3287CrossRefGoogle Scholar
  19. 19.
    Yan B, Gu S, Zhang Y (2013) Polylactide-based thermoplastic shape memory polymer nanocomposites. Eur Polym J 49:366–378CrossRefGoogle Scholar
  20. 20.
    Lai SM, Lan YC (2013) Shape memory properties of melt-blended polylactic acid (PLA)/thermoplastic polyurethane (TPU) bio-based blends. J Polym Res 20:140CrossRefGoogle Scholar
  21. 21.
    Wang Y, Shi Y, Dai J, Yang J, Huang T, Zhang N, Peng Y, Wang Y (2013) Morphology and property changes of immiscible polycarbonate/poly(l-lactide) blends induced by carbon nanotubes. Polym Int 62:957–965CrossRefGoogle Scholar
  22. 22.
    Omonov TS, Harrats C, Groeninckx G, Moldenaers P (2007) Anisotropy and instability of the co-continuous phase morphology in uncompatibilized and reactively compatibilized polypropylene/polystyrene blends. Polymer 48:5289–5302CrossRefGoogle Scholar
  23. 23.
    Lee SH, Kontopoulou M, Park CB (2010) Effect of nanosilica on the co-continuous morphology of polypropylene/polyolefin elastomer blends. Polymer 51:1147–1155CrossRefGoogle Scholar
  24. 24.
    Pötschke P, Paul DR (2003) Formation of co-continuous structures in melt-mixed immiscible polymer blends. J Macromol Sci C 43:87–141CrossRefGoogle Scholar
  25. 25.
    Ratna D, Karger-Kocsis J (2011) Shape memory polymer system of semi-interpenetrating network structure composed of crosslinked poly (methyl methacrylate) and poly (ethylene oxide). Polymer 52:1063–1070CrossRefGoogle Scholar
  26. 26.
    Liu Q, Zhang H, Zhu M, Dong Z, Wu C, Jiang J, Li X, Luo F, Gao Y, Deng B, Zhang Y, Xing J, Wang H, Li X (2013) Blends of polylactide/thermoplactic elastomer: miscibility, physical aging and crystallization behaviors. Fiber Polym 14:1688–1698CrossRefGoogle Scholar
  27. 27.
    Zhang X, Tan BH, Li Z (2018) Biodegradable polyester shape memory polymers: recent advances in design, material properties and applications. Mater Sci Eng C 92:1061–1074CrossRefGoogle Scholar
  28. 28.
    Nagarajan V, Zhang K, Misra M, Mohanty AK (2015) Overcoming the fundamental challenges in improving the impact strength and crystallinity of PLA biocomposites: influence of nucleating agent and mold temperature. ACS Appl Mater Interfaces 7:11203–11214CrossRefGoogle Scholar
  29. 29.
    Xiao S, Yang Y, Zhong M, Chen H, Zhang Y, Yang J, Zheng J (2017) Salt-responsive bilayer hydrogels with pseudo double network structure actuated by polyelectrolyte and anti-polyelectrolyte effects. ACS Appl Mater Interfaces 9:20843–20851CrossRefGoogle Scholar

Copyright information

© Iran Polymer and Petrochemical Institute 2019

Authors and Affiliations

  1. 1.School of Pharmaceutical and Material EngineeringJin Hua PolytechnicJin HuaPeople’s Republic of China
  2. 2.School of Pharmaceutical and Materials EngineeringTaizhou UniversityTaizhouPeople’s Republic of China

Personalised recommendations