What question did this study set out to answer?

To synthesize rigid polyurethane foam using lignopolyol derived through mild oxypropylation and evaluate the impact of lignopolyol content on foam structure, thermal stability, and mechanical properties.

January 1, 2022RSC AdvancesOpen Access

Preparation of rigid polyurethane foam from lignopolyol obtained through mild oxypropylation

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Authors

MWMiao WuHubei University JPJianjun PengHenan University of Science and Technology YDYouming DongHeilongjiang University

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Implication

Experimental study demonstrates enhanced compressive strength in polyurethane foam synthesized with oxypropylated lignin, indicating potential for greener bio-based materials.

Key Points

To synthesize rigid polyurethane foam using lignopolyol derived through mild oxypropylation and evaluate the impact of lignopolyol content on foam structure, thermal stability, and mechanical properties.
Converted lignin into lignopolyol using a mild and efficient oxypropylation process that transformed phenolic hydroxyls into aliphatic hydroxyls.
Synthesized rigid polyurethane foams with varying contents of lignopolyol as a replacement for conventional polyols.
Characterized the chemical structure, morphology, compressive strength, and thermal stability of the resulting bio-based foams.
Addition of lignopolyol significantly increased compressive strength compared to pure polyurethane foam by forming highly branched and functionalized polyol networks.
Optimal foam regularity and uniformity occurred at a 40% molal weight substitution of polyols with lignopolyol, achieving a compressive strength of 0.18 MPa.
Lignopolyol contents below the 40% threshold led to an increase in undesired secondary reactions during synthesis.

Cite This Study

Wu et al. (2022) studied this question.

synapsesocial.com/papers/69de9e3840ea065679558d3f https://doi.org/10.1039/d2ra02895f

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Implication

Experimental study demonstrates enhanced compressive strength in polyurethane foam synthesized with oxypropylated lignin, indicating potential for greener bio-based materials.

Preparation of rigid polyurethane foam from lignopolyol obtained through mild oxypropylation

Discussion

Member takes

Implication

Key Points

Cite This Study

Preparation of rigid polyurethane foam from lignopolyol obtained through mild oxypropylation

Discussion

Member takes

Implication

Key Points

Cite This Study

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