Synthesis hybrid bio-polyurethane foam from biomass material

Roziafanto, Achmad Nandang; Dwijaya, Made Subekti; Yunita, Rezky; Amrullah, Majid; Chalid, Mochamad

doi:10.1063/1.5134632

Cited by 3 publications

(2 citation statements)

References 14 publications

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“…The increase in polyurethane foam consumption, fluctuations in the price of polyurethane raw materials, and the toxicity of the raw materials used for manufacturing polyols (e.g., propylene oxide) all have pushed researchers to find greener alternatives [8,9]. Lignin, the most abundant natural aromatic polymer on earth, has excellent potential to replace petrochemical polyols due to its hydroxyl functional groups that can react with isocyanate to form polyurethane linkages [10][11][12][13]. Lignin is a byproduct of chemical pulping and bioethanol production, and only 2-5% is used in value-added products [14][15][16].…”

Section: Introductionmentioning

confidence: 99%

Studying the Suitability of Nineteen Lignins as Partial Polyol Replacement in Rigid Polyurethane/Polyisocyanurate Foam

et al. 2022

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In this study, nineteen unmodified lignins from various sources (hardwood, softwood, wheat straw, and corn stover) and isolation processes (kraft, soda, organosolv, sulfite, and enzymatic hydrolysis) were used to replace 30 wt.% of petroleum-based polyol in rigid polyurethane/polyisocyanurate (PUR/PIR) foam formulations. Lignin samples were characterized by measuring their ash content, hydroxyl content (Phosphorus Nuclear Magnetic Resonance Spectroscopy), impurities (Inductively Coupled Plasma), and pH. After foam formulation, properties of lignin-based foams were evaluated and compared with a control foam (with no lignin) via cell morphology, closed-cell content, compression strength, apparent density, thermal conductivity, and color analysis. Lignin-based foams passed all measured standard specifications required by ASTM International C1029-15 for type 1 rigid insulation foams, except for three foams. These three foams had poor compressive strengths, significantly larger cell sizes, darker color, lower closed-cell contents, and slower foaming times. The foam made with corn stover enzymatic hydrolysis lignin showed no significant difference from the control foam in terms of compressive strength and outperformed all other lignin-based foams due to its higher aliphatic and p-hydroxyphenyl hydroxyl contents. Lignin-based foams that passed all required performance testing were made with lignins having higher pH, potassium, sodium, calcium, magnesium, and aliphatic/p-hydroxyphenyl hydroxyl group contents than those that failed.

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Section: Introductionmentioning

confidence: 99%

Studying the Suitability of Nineteen Lignins as Partial Polyol Replacement in Rigid Polyurethane/Polyisocyanurate Foam

et al. 2022

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“…The first method is pre-polymer termination using diisocyanate, and the second is polyol termination using diisocyanate, followed by adding a crosslinker [19]. The peak list is presented in Table .…”

Section: Ftir (Fourier Transform Infrared) Analysis Resultsmentioning

confidence: 99%

Preliminary Study of Material Properties on Pu-Mg-Zn for Aneurysm Clip Application

Dwijaya¹,

Asmaria²

2022

metal.

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An aneurysm clip is an implant tool for assisting the neurosurgeon in treating acute hemorrhagic stroke and cerebral aneurysm. This equipment stops the blood flow of a ruptured or enlarged blood vessel or aneurysm. In the development of aneurysm clip production, titanium alloy is the most used material selection. Several researchers reported that this metal leads to artifacts during MR (magnetic resonance) or CT (computed tomography) imaging. Since several pieces of evidence polyurethane could be a good material selection for aneurysm clips, this paper aims to investigate the material properties of the polyurethane foam with an additional combination of magnesium and zinc. This study conducts magnesium and zinc composition variations of 1 wt.%, 2 wt.%, and 3 wt.%, respectively. The materials were tested using a compression test, a FTIR (fourier-transform-infrared), SEM (scanning-electron-microscope), DSC (differential-scanning-calorimetry), and TGA (thermogravimetric-analyzer) to determine the material properties. From all examinations, adding magnesium and zinc to polyurethane foam affected the compressive strength and porosity of the polyurethane foam. Therefore, all test results concluded that adding magnesium with a composition of 3wt.%, which has a compressive strength of 0.84 MPa, is the best mixture. The idea of finding other compositions that are compatible with the polyurethane will significantly increase the possibility of new materials for aneurysm clip construction.

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Micro-Fibrillated Cellulose Prepared from Sorghum Bicolor (L.) Moench by TEMPO-Mediated Oxidation Treatment

Roziafanto

Furqon

Sofyan

et al. 2022

Springer Proceedings in Materials

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Synthesis hybrid bio-polyurethane foam from biomass material

Cited by 3 publications

References 14 publications

Studying the Suitability of Nineteen Lignins as Partial Polyol Replacement in Rigid Polyurethane/Polyisocyanurate Foam

Studying the Suitability of Nineteen Lignins as Partial Polyol Replacement in Rigid Polyurethane/Polyisocyanurate Foam

Preliminary Study of Material Properties on Pu-Mg-Zn for Aneurysm Clip Application

Micro-Fibrillated Cellulose Prepared from Sorghum Bicolor (L.) Moench by TEMPO-Mediated Oxidation Treatment

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