Skip to main content
SpringerLink
Log in

Optimization of Microwave-Assisted Preparation of TPA from Waste PET Using Response Surface Methodology

  • Original Paper
  • Published:
Journal of Polymers and the Environment Aims and scope Submit manuscript

Abstract

Terephthalic acid (TPA) was prepared from waste polyethylene terephthalate by microwave-assisted depolymerization with TOMAB as catalyst, the structure and properties of TPA were elucidated by using physico-chemical and spectroscopic methods. Single-factors experiments demonstrated that the TPA yield was affected significantly by the factors of catalyst and alkali amount, depolymerization temperature and time. The effects of variables, including catalyst and alkali amount, depolymerization temperature and time, on the TPA yield were evaluted by response surface methodology with a Box-Behnken design. The modified and verified experiments were completed after considering product performance and actual operation, the optimum parameters were determined to be TOMAB 2.7 g, 15% NaOH 260 mL, temperature 85 °C, degradation time 2.2 h. Under these conditions, the average yield of TPA in three replicated experiments is 97.53%, and this value is not significantly different from the value of 98.59% predicted by the model. These results demonstrate that this method is feasible.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Fig. 1
Fig. 2
Fig. 3
Fig. 4
Fig. 5
Fig. 6
Fig. 7
Fig. 8

Similar content being viewed by others

References

  1. Sadeghi GMM, Shamsi R, Sayaf M (2011) From aminolysis product of PET waste to novel biodegradable polyurethanes. J Polym Environ 19:522–534

    Article  CAS  Google Scholar 

  2. Loic B, Tamara E, Thierry M, Arnaud P, Maurice B, Benedicte L, Philippe R (2009) Atom transfer radical polymerization of styrene from different poly(ethylene terephthalate) surfaces: films, fibers and fabrics. Eur Polym J 45:246–255

    Article  Google Scholar 

  3. Yusuf N, Demet C, Ioan C, Yusuf Y, Jale H (2008) Pyrolysis of poly(phenylene vinylene)s with polycaprolactone side chains. Polym Degrad Stab 93:904–909

    Article  Google Scholar 

  4. Donnini MS, Maria Z (2007) Post consumer pet depolymerization by acid hydrolysis. Polym Plast Technol Eng 46:135–144

    Article  Google Scholar 

  5. Karayannidis GP, Nikolaidis AK, Sideridou ID, Bikiaris DN, Achilias DS (2006) Chemical recycling of PET by glycolysis: polymerization and characterization of the dimethacrylated glycolysate. Macromol Mater Eng 291:1338–1347

    Article  CAS  Google Scholar 

  6. Pardal F, Tersac G (2006) Comparative reactivity of glycols in PET glycolysis. Polym Degrad Stab 91:2567–2578

    Article  CAS  Google Scholar 

  7. Pingale ND, Shukla SR (2009) Microwave-assisted aminolytic depolymerization of PET waste. Eur Polym J 45:2695–2700

    Article  CAS  Google Scholar 

  8. Bech L, Meylheuc T, Lepoittevin B, Roger P (2007) Chemical surface modification of poly(ethylene terephthalate) fibers by aminolysis and grafting of carbohydrates. J Polym Sci A Polym Chem 45:2172–2183

    Article  CAS  Google Scholar 

  9. Mohammad NS, Dimitris SA, Halim HR, Dimitris NB, Konstantins-Alexandros GK, George PK (2010) Hydrolytic depolymerization of PET in a microwave reactor. Macromol Mater Eng 295:575–584

    Article  Google Scholar 

  10. Lidstrom P, Tierney J, Wathey B, Westman J (2001) Microwave assisted organic synthesis—a review. Tetrahedron 57:9225–9283

    Article  CAS  Google Scholar 

  11. Bogdal D, Penczek P, Pielichowski J, Prociak A (2003) Microwave assisted synthesis, crosslinking, and processing of polymeric meterials. Adv Polym Sci 163:193–263

    CAS  Google Scholar 

  12. Hammi KM, Jdey A, Abdelly C, Majdoub H, Ksouri R (2015) Optimization of ultrasound-assisted extraction of antioxidant compounds from Tunisian Zizyphus lotus fruits using response surface methodology. Food Chem 184:80–89

    Article  CAS  Google Scholar 

  13. Mohammad NS, Dimitris SA, Halim HR, Dimitris NB, Konstantinos-Alexandros GK, George PK (2010) Hydrolytic depolymerization of PET in a microwave reactor. Macromol Mater Eng 295:575–584

    Article  Google Scholar 

  14. Xiao C, Fusheng L, Zhuo L, Shitao Y (2010) Hydrolysis of poly(ethylene terephthalate) to recover terephthalic acid in ionic liquids. Chem Eng 38:40–44

    Google Scholar 

Download references

Acknowledgements

We acknowledge the financial support from the Qingyang City Science and Technology Support Project (No. KZ2012-56) and the Applied Chemistry Key Subject of Gansu Province (No. GSACKS20130113), PR China.

Author information

Authors and Affiliations

  1. College of Chemistry & Chemical Engineering, Longdong University, Qingyang, 745000, Gansu, China

    Haobin Hu, Yun Wu & Zhiming Zhu

Authors
  1. Haobin Hu
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. Yun Wu
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. Zhiming Zhu
    View author publications

    You can also search for this author in PubMed Google Scholar

Corresponding author

Correspondence to Haobin Hu.

Rights and permissions

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Hu, H., Wu, Y. & Zhu, Z. Optimization of Microwave-Assisted Preparation of TPA from Waste PET Using Response Surface Methodology. J Polym Environ 26, 375–382 (2018). https://doi.org/10.1007/s10924-017-0952-2

Download citation

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s10924-017-0952-2

Keywords

Search

Navigation