Scholarlink

<p>Non-isocyanate polyurethane (NIPU) is a novel class of polyurethane synthesized without toxic diisocyanate compounds, making it a safer and more environmentally friendly alternative to conventional polyurethane. Bio-based polyols, such as lignin, offer a sustainable approach to NIPU production. Oil palm empty fruit bunches (OPEFB) represent an abundant and underutilized source of lignin; however, the synthesis of lignin-based NIPU from OPEFB has not yet been widely explored. This study aims to synthesize lignin-based NIPU (LNIPU) from OPEFB through polycondensation between dicarbamates and modified lignin. Lignin modification involved hydroxymethylation and epoxidation, while dicarbamates were synthesized using three types of diamines: ethylenediamine, hexamethylenediamine, and decanediamine. Fourier transform infrared (FTIR) spectroscopy, combined with a deconvolution technique, was used to confirm the formation of functional groups, while <sup>1</sup>H-NMR spectroscopy provided further structural insights. Functional group and chemical analyses confirmed the successful synthesis of LNIPU with three different carbamate linkers. The resulting material exhibited distinct chemical characteristics indicative of NIPU formation. This research highlights the potential of OPEFB as a renewable lignin source for green polyurethane production, contributing to the development of sustainable, high-performance biopolymers while promoting waste valorization in the palm oil industry.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Harnessing highly abundant oil palm empty fruit bunches biomass as sustainable biopolyol for synthesizing lignin-based non-isocyanate polyurethane

  • 期刊论文

  • 发表日期：

    2025年8月30日

查看全文
  • Al Buchori Nur Fajar,
  • Ozi Adi Saputra,
  • Roshid Adi Nugroho,
  • Agung Lucky Pradita,
  • Fajar Rakhman Wibowo

摘要

Non-isocyanate polyurethane (NIPU) is a novel class of polyurethane synthesized without toxic diisocyanate compounds, making it a safer and more environmentally friendly alternative to conventional polyurethane. Bio-based polyols, such as lignin, offer a sustainable approach to NIPU production. Oil palm empty fruit bunches (OPEFB) represent an abundant and underutilized source of lignin; however, the synthesis of lignin-based NIPU from OPEFB has not yet been widely explored. This study aims to synthesize lignin-based NIPU (LNIPU) from OPEFB through polycondensation between dicarbamates and modified lignin. Lignin modification involved hydroxymethylation and epoxidation, while dicarbamates were synthesized using three types of diamines: ethylenediamine, hexamethylenediamine, and decanediamine. Fourier transform infrared (FTIR) spectroscopy, combined with a deconvolution technique, was used to confirm the formation of functional groups, while 1H-NMR spectroscopy provided further structural insights. Functional group and chemical analyses confirmed the successful synthesis of LNIPU with three different carbamate linkers. The resulting material exhibited distinct chemical characteristics indicative of NIPU formation. This research highlights the potential of OPEFB as a renewable lignin source for green polyurethane production, contributing to the development of sustainable, high-performance biopolymers while promoting waste valorization in the palm oil industry.