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Evaluating the performance of biopolyol-based rigid foams derived from rice straw liquefaction.

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Title: Evaluating the performance of biopolyol-based rigid foams derived from rice straw liquefaction.
Authors: Elsayed, M.1 (AUTHOR) mmetwaly@bciholding.com, Abdel-Wakil, Walid S.2 (AUTHOR) drwalidabdelwakil@gmail.com, Ghazy, Mohamed B.1 (AUTHOR) Ghazymbm56@gmail.com, Fahmy, Alaa3 (AUTHOR) alaa.mohamed@bam.de
Source: Pigment & Resin Technology. 2026, Vol. 55 Issue 5, p889-898. 10p.
Subjects: Biomass liquefaction, Polyols, Agricultural wastes, Foam, Polyurethanes, Thermal insulation, Biopolymers, Biomass chemicals
Abstract: Purpose: The polyurethane sector primarily relies on petrochemical substances, including polyols and isocyanates. Given the swift consumption of fossil fuel resources and the rising concerns about ecological issues and global warming, this study aims to explore the sustainable advancement of polyurethane rigid foam by using renewable biopolyols derived from agricultural waste liquefaction. Design/methodology/approach: The liquefaction of lignocellulosic biomass involves breaking down complex polymers into smaller molecules using heat, chemicals and catalysts to prepare biopolyol as a renewable feedstock for the polyurethane industry. Spectral analysis of the liquefaction products verified that the process achieved the desired outcome and indicated the presence of hydroxyl groups. The biopolyol analysis demonstrated a biomass conversion rate of up to 87% and a hydroxyl number between 230 and 250 mg KOH/g, suggesting that this biopolyol could serve as a viable alternative to petrochemical polyols. Findings: Various formulations of biopolyol obtained from rice straw liquefaction, conducted at 160 °C for 2 h, were prepared. Intensive study was conducted on the applicability of using biopolyol in rigid foam refrigerator formulation in comparison to petroleum counterparts. The results obtained from scanning electron microscopy showed that the biopolyol-based foams had a symmetrical cell structure and a significant proportion of sealed cells. Biobased foam demonstrated superior thermal insulation compared to its petrochemical-based equivalent. Originality/value: These results underscore the feasibility of agricultural waste liquefaction as an eco-friendly approach for synthesizing biopolyols and their application in polyurethane foam production. The study contributes to the development of sustainable materials in the polymer industry and supports the transition toward renewable feedstocks in rigid foam applications. The study, moreover, introduces PEG 400 as a novel liquefaction solvent, offering improved compatibility with rigid polyurethane systems and establishing a new benchmark for sustainable rigid foam production. [ABSTRACT FROM AUTHOR]
Copyright of Pigment & Resin Technology is the property of Emerald Publishing Limited and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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Header DbId: egs
DbLabel: Engineering Source
An: 194969017
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
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Items – Name: Title
  Label: Title
  Group: Ti
  Data: Evaluating the performance of biopolyol-based rigid foams derived from rice straw liquefaction.
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  Data: <searchLink fieldCode="AR" term="%22Elsayed%2C+M%2E%22">Elsayed, M.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> mmetwaly@bciholding.com</i><br /><searchLink fieldCode="AR" term="%22Abdel-Wakil%2C+Walid+S%2E%22">Abdel-Wakil, Walid S.</searchLink><relatesTo>2</relatesTo> (AUTHOR)<i> drwalidabdelwakil@gmail.com</i><br /><searchLink fieldCode="AR" term="%22Ghazy%2C+Mohamed+B%2E%22">Ghazy, Mohamed B.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> Ghazymbm56@gmail.com</i><br /><searchLink fieldCode="AR" term="%22Fahmy%2C+Alaa%22">Fahmy, Alaa</searchLink><relatesTo>3</relatesTo> (AUTHOR)<i> alaa.mohamed@bam.de</i>
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  Data: <searchLink fieldCode="JN" term="%22Pigment+%26+Resin+Technology%22">Pigment & Resin Technology</searchLink>. 2026, Vol. 55 Issue 5, p889-898. 10p.
– Name: Subject
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  Data: <searchLink fieldCode="DE" term="%22Biomass+liquefaction%22">Biomass liquefaction</searchLink><br /><searchLink fieldCode="DE" term="%22Polyols%22">Polyols</searchLink><br /><searchLink fieldCode="DE" term="%22Agricultural+wastes%22">Agricultural wastes</searchLink><br /><searchLink fieldCode="DE" term="%22Foam%22">Foam</searchLink><br /><searchLink fieldCode="DE" term="%22Polyurethanes%22">Polyurethanes</searchLink><br /><searchLink fieldCode="DE" term="%22Thermal+insulation%22">Thermal insulation</searchLink><br /><searchLink fieldCode="DE" term="%22Biopolymers%22">Biopolymers</searchLink><br /><searchLink fieldCode="DE" term="%22Biomass+chemicals%22">Biomass chemicals</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Purpose: The polyurethane sector primarily relies on petrochemical substances, including polyols and isocyanates. Given the swift consumption of fossil fuel resources and the rising concerns about ecological issues and global warming, this study aims to explore the sustainable advancement of polyurethane rigid foam by using renewable biopolyols derived from agricultural waste liquefaction. Design/methodology/approach: The liquefaction of lignocellulosic biomass involves breaking down complex polymers into smaller molecules using heat, chemicals and catalysts to prepare biopolyol as a renewable feedstock for the polyurethane industry. Spectral analysis of the liquefaction products verified that the process achieved the desired outcome and indicated the presence of hydroxyl groups. The biopolyol analysis demonstrated a biomass conversion rate of up to 87% and a hydroxyl number between 230 and 250 mg KOH/g, suggesting that this biopolyol could serve as a viable alternative to petrochemical polyols. Findings: Various formulations of biopolyol obtained from rice straw liquefaction, conducted at 160 °C for 2 h, were prepared. Intensive study was conducted on the applicability of using biopolyol in rigid foam refrigerator formulation in comparison to petroleum counterparts. The results obtained from scanning electron microscopy showed that the biopolyol-based foams had a symmetrical cell structure and a significant proportion of sealed cells. Biobased foam demonstrated superior thermal insulation compared to its petrochemical-based equivalent. Originality/value: These results underscore the feasibility of agricultural waste liquefaction as an eco-friendly approach for synthesizing biopolyols and their application in polyurethane foam production. The study contributes to the development of sustainable materials in the polymer industry and supports the transition toward renewable feedstocks in rigid foam applications. The study, moreover, introduces PEG 400 as a novel liquefaction solvent, offering improved compatibility with rigid polyurethane systems and establishing a new benchmark for sustainable rigid foam production. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Pigment & Resin Technology is the property of Emerald Publishing Limited and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
  BibEntity:
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 10
        StartPage: 889
    Subjects:
      – SubjectFull: Biomass liquefaction
        Type: general
      – SubjectFull: Polyols
        Type: general
      – SubjectFull: Agricultural wastes
        Type: general
      – SubjectFull: Foam
        Type: general
      – SubjectFull: Polyurethanes
        Type: general
      – SubjectFull: Thermal insulation
        Type: general
      – SubjectFull: Biopolymers
        Type: general
      – SubjectFull: Biomass chemicals
        Type: general
    Titles:
      – TitleFull: Evaluating the performance of biopolyol-based rigid foams derived from rice straw liquefaction.
        Type: main
  BibRelationships:
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      – PersonEntity:
          Name:
            NameFull: Elsayed, M.
      – PersonEntity:
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            NameFull: Abdel-Wakil, Walid S.
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            NameFull: Ghazy, Mohamed B.
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            NameFull: Fahmy, Alaa
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          Dates:
            – D: 01
              M: 09
              Text: 2026
              Type: published
              Y: 2026
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            – Type: issn-print
              Value: 03699420
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              Value: 55
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              Value: 5
          Titles:
            – TitleFull: Pigment & Resin Technology
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