Journal of Polymers and the Environment

, Volume 27, Issue 9, pp 2089–2097 | Cite as

PHB and Montmorillonite Clay Composites as KNO3 and NPK Support for a Controlled Release

  • Josiane Lima Souza
  • Adriana de Campos
  • Débora França
  • Roselena FaezEmail author
Original paper


In order to improve nutrient uptake by plants and at the same time decrease losses by leaching, polymeric compounds based on biodegradable poly(3-hydroxybutyrate) (PHB) and montmorillonite clay (MMt) were melt processed with KNO3 and NPK fertilizers (Fert). We present a comprehensive analysis of releasing profile of the potassium (K+), nitrogen (NH4+ and NO3) and phosphorous (PO43−) from PHB/MMt/fertilizer at 90/0/10, 50/0/50, 80/10/10, 40/10/50, 25/25/50 formulation. The amount and type of the fertilizer and the presence of clay delineated the release of the cations and anions from the matrix. Cations released faster than anions through MMt composites due to cations–MMt interactions and its diffusion through MMt phase. The nutrients delivery from composites was lower than pure fertilizer. Composites formulations with smaller amount of PHB and MMt (25 wt%) were enough to encapsulate the fertilizer and delay the ions releasing. Further, the simple method of preparation also attains the sustainability of the whole process.


Biodegradable polymer Clay Fertilizers Controlled release Thermal stability Crystallinity Composites 



The authors are grateful to FAPESP-Brazil (Process Number 2014/06566-9) for financial support, Bentonit União for supplying the clay, and Biocycle/PHB Industrial for supplying PHB, LCE-Structural Characterization Laboratory (UFSCAR) for SEM analysis. R. Faez is CNPq researcher.

Supplementary material

10924_2019_1498_MOESM1_ESM.docx (714 kb)
Supplementary material 1 (DOCX 713 kb)


  1. 1.
    Bortolin A, Aouada FA, Mattoso LHC, Ribeiro C (2013) Nanocomposite PAAm/methyl cellulose/montmorillonite hydrogel: evidence of synergistic effects for the slow release of fertilizers. J Agric Food Chem 61:7431–7439. CrossRefGoogle Scholar
  2. 2.
    Teixeira Chagas WF, Guelfi DR, Emrich EB et al (2016) Agronomic efficiency of polymer-coated triple superphosphate in onion cultivated in contrasting texture soils1. Rev Cienc Agron 47:439–446. CrossRefGoogle Scholar
  3. 3.
    Azeem B, Kushaari K, Man ZB et al (2014) Review on materials & methods to produce controlled release coated urea fertilizer. J Control Release 181:11–21. CrossRefGoogle Scholar
  4. 4.
    Ghormade V, Deshpande MV, Paknikar KM (2011) Perspectives for nano-biotechnology enabled protection and nutrition of plants. Biotechnol Adv 29:792–803. CrossRefGoogle Scholar
  5. 5.
    Chen J, Lü S, Zhang Z et al (2018) Science of the total environment environmentally friendly fertilizers: a review of materials used and their effects on the environment. Sci Total Environ 613–614:829–839. CrossRefGoogle Scholar
  6. 6.
    Pereira EI, Minussi FB, Cruz CCT et al (2012) Urea−montmorillonite-extruded nanocomposites: a novel slow-release material. J Agric Food Chem 60:5267–5272. CrossRefGoogle Scholar
  7. 7.
    Grillo R, Zocal N, Maruyama CR et al (2012) Poly(ɛ-caprolactone)nanocapsules as carrier systems for herbicides: physico-chemical characterization and genotoxicity evaluation. J Hazard Mater 231–232:1–9. CrossRefGoogle Scholar
  8. 8.
    Volova TG, Prudnikova SV, Boyandin AN (2016) Biodegradable poly-3-hydroxybutyrate as a fertiliser carrier. J Sci Food Agric 96:4183–4193. CrossRefGoogle Scholar
  9. 9.
    Chandra R, Rustgi R (1998) Pergamon biodegradable polymers. Prog Polym Sci 23:1273–1335. CrossRefGoogle Scholar
  10. 10.
    Amico DAD, Manfredi LB, Cyras VP (2011) Relationship between thermal properties, morphology, and crystallinity of nanocomposites based on polyhydroxybutyrate. J Appl Polym Sci 123:200–208. CrossRefGoogle Scholar
  11. 11.
    Maiti P, Batt CA, Giannelis EP (2007) New biodegradable polyhydroxybutyrate/layered silicate nanocomposites. Biomacromolecules 8:3393–3400CrossRefGoogle Scholar
  12. 12.
    Wee CY, Liow SS, Li Z et al (2017) New Poly[(R)-3-hydroxybutyrate- co-4-hydroxybutyrate] (P3HB4HB)-based thermogels. Macromol Chem Phys 218:1700196. CrossRefGoogle Scholar
  13. 13.
    Bruzaud S, Bourmaud A (2007) Thermal degradation and (nano) mechanical behavior of layered silicate reinforced poly (3-hydroxybutyrate-co-3-hydroxyvalerate) nanocomposites. Polym Test 26:652–659. CrossRefGoogle Scholar
  14. 14.
    Souza JDL, Chiaregato CG, Faez R (2017) Green composite based on PHB and montmorillonite for KNO3 and NPK delivery system. J Polym Environ 26:1–10. Google Scholar
  15. 15.
    Barud HS, Souza JL, Santos DB et al (2011) Bacterial cellulose/poly(3-hydroxybutyrate) composite membranes. Carbohydr Polym 83:1279–1284. CrossRefGoogle Scholar
  16. 16.
    Thiré RMSM, Ribeiro TAA, Andrade CT (2006) Effect of starch addition on compression-molded poly(3-hydroxybutyrate)/starch blends. J Appl Polym Sci 100:4338–4347. CrossRefGoogle Scholar
  17. 17.
    Dos Santos BR, Bacalhau FB, Pereira TDS et al (2015) Chitosan-montmorillonite microspheres: a sustainable fertilizer delivery system. Carbohydr Polym 127:340–346. CrossRefGoogle Scholar
  18. 18.
    França D, Medina ÂF, Messa LL et al (2018) Chitosan spray-dried microcapsule and microsphere as fertilizer host for swellable—controlled release materials. Carbohydr Polym 196:47–55. CrossRefGoogle Scholar
  19. 19.
    Vogel C, Wessel E, Siesler HW (2008) FT-IR imaging spectroscopy of phase separation in blends of poly(3-hydroxybutyrate) with poly(L-lactic acid) and poly(E-caprolactone). Biomacromolecules 9:523–527CrossRefGoogle Scholar
  20. 20.
    Lai S, Sun W, Don T (2015) Preparation and characterization of biodegradable polymer blends from poly (3-hydroxybutyrate)/poly (vinyl acetate)—modified corn starch. Polym Eng Sci 55:1321–1329. CrossRefGoogle Scholar
  21. 21.
    Xu J, Guo BH, Yang R et al (2002) In situ FTIR study on melting and crystallization of polyhydroxyalkanoates. Polymer 43:6893–6899. CrossRefGoogle Scholar
  22. 22.
    Yang Y, Tong Z, Geng Y et al (2013) Biobased polymer composites derived from corn stover and feather meals as double-coating materials for controlled-release and water-retention urea fertilizers. J Agric Food Chem 61:8166–8174. CrossRefGoogle Scholar
  23. 23.
    Tănase EE, Popa ME, Râpă M, Popa O (2015) PHB/cellulose fibers based materials: physical, mechanical and barrier properties. Agric Agric Sci Procedia 6:608–615. Google Scholar
  24. 24.
    Correa AC, Brait V, Alexandre J et al (2017) Biodegradable blends of urea plasticized thermoplastic starch (UTPS) and poly (ε-caprolactone) (PCL): morphological, rheological, thermal and mechanical properties. Carbohydr Polym 167:177–184. CrossRefGoogle Scholar
  25. 25.
    Panayotidou E, Kroustalli A, Baklavaridis A et al (2015) Biopolyester-based nanocomposites: structural, thermo-mechanical and biocompatibility characteristics of poly (3-hydroxybutyrate)/montmorillonite clay nanohybrids. J Appl Polym Sci 132:1–11. Google Scholar
  26. 26.
    Harmaen AS, Khalina A, Azowa I et al (2015) Thermal and biodegradation properties of poly(lactic acid)/fertilizer/oil palm fibers blends biocomposites. Polym Compos 36:576–583. CrossRefGoogle Scholar
  27. 27.
    Souza JL, Santos AF, Crespi MS, Ribeiro CA (2011) Thermal characterization of the interaction of poly(3-hydroxybutyrate) with maleic anhydride. J Therm Anal Calorim 106:453–458. CrossRefGoogle Scholar
  28. 28.
    Ritger PL, Peppas NA (1987) A simple equation for description of solute release I. Fickian and non-fickian release from non-swellable devices in the form of slabs, spheres, cylinders or discs. J Control Release 5:23–36. CrossRefGoogle Scholar
  29. 29.
    Siepmann J, Peppas NA (2001) Modeling of drug release from delivery systems based on hydroxypropyl methylcellulose (HPMC). Adv Drug Deliv Rev 48:139–157. CrossRefGoogle Scholar
  30. 30.
    Jamnongkan T, Kaewpirom S (2010) Potassium release kinetics and water retention of controlled-release fertilizers based on chitosan hydrogels. J Polym Environ 18:413–421. CrossRefGoogle Scholar
  31. 31.
    Sankar C, Mishra B (2003) Development and in vitro evaluations of gelatin A microspheres of ketorolac tromethamine for intranasal administration. Acta Pharm 53:101–110Google Scholar
  32. 32.
    Pradhan R, Budhathoki U, Thapa P (2008) Formulation of once a day controlled release tablet of indomethacin based on HPMC-mannitol. Kathamandu Univ J Sci Eng Technol 4(1):55–67Google Scholar
  33. 33.
    Chanprateep S (2010) Current trends in biodegradable polyhydroxyalkanoates. J Biosci Bioeng 110:621–632. CrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2019

Authors and Affiliations

  1. 1.Laboratory of Polymeric and Biosorbents MaterialsFederal University of São Carlos, UFSCarArarasBrazil

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