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Oxyalkylation of Lignoboost™ Kraft Lignin with Propylene Carbonate: Design of Experiments towards Synthesis Optimization.

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  • معلومة اضافية
    • المصدر:
      Publisher: MDPI Country of Publication: Switzerland NLM ID: 101555929 Publication Model: Electronic Cited Medium: Print ISSN: 1996-1944 (Print) Linking ISSN: 19961944 NLM ISO Abbreviation: Materials (Basel) Subsets: PubMed not MEDLINE
    • بيانات النشر:
      Publication: May 2010- : Basel, Switzerland : MDPI
      Original Publication: Basel, Switzerland : Molecular Diversity Preservation International, 2008-2010.
    • نبذة مختصرة :
      Oxyalkylation with propylene carbonate (PC) is a safe process to convert lignin into a reactive liquid polyol to be used in polyurethane formulations. In this study, the effect of operating conditions of oxyalkylation (temperature, time and quantify of PC) on the quality of lignin-based polyol in terms hydroxyl number (I OH ) and viscosity was studied. Full factorial modeling and response surface methodology (RSM) were applied to study the effect and interaction of process variables on the I OH and viscosity of lignin-based polyols. The results revealed that the I OH is highly affected by the reaction time, while the viscosity is affected by the amount of PC. Validation experiments confirmed the model is reliable. Furthermore, RSM optimization allowed to reduce the amount of PC by about 50% and to increase the lignin content in the polyol from 12.5% to 25% ( w / w ) depending on the temperature and time of the process and also on the purpose of the polyol produced (i.e., application in rigid foams or adhesives).
    • References:
      Polymers (Basel). 2017 Feb 17;9(2):. (PMID: 30970748)
      Polymers (Basel). 2018 Jun 26;10(7):. (PMID: 30960632)
      Int J Biol Macromol. 2020 Jun 1;152:775-785. (PMID: 32119943)
      Polymers (Basel). 2019 Jul 18;11(7):. (PMID: 31323816)
      Materials (Basel). 2018 Sep 27;11(10):. (PMID: 30262722)
    • Grant Information:
      Project N. º 21874 European Regional Development Fund
    • Contributed Indexing:
      Keywords: hydroxyl number; lignin-based polyol; optimization; oxyalkylation process; polyurethane; viscosity
    • الموضوع:
      Date Created: 20220310 Latest Revision: 20220316
    • الموضوع:
      20240104
    • الرقم المعرف:
      PMC8912111
    • الرقم المعرف:
      10.3390/ma15051925
    • الرقم المعرف:
      35269155