The study of palm‐oil‐based bio‐polyol on the morphological, acoustic and mechanical properties of flexible polyurethane foams

Abstract

The focus of this paper was to explore the acoustic properties of flexible polyurethane (FPU) foam modified by palm‐oil‐based polyol (POP). The presence of POP showed a marked influence on the microstructure and mechanical properties of FPU foam. A smaller mean pore diameter can be observed at lower POP content. Indeed, the introduction of POP caused a higher closed pore ratio and an increased air‐flow resistivity, which consequently improved the sound absorption coefficient and transmission loss. In particular, the acoustic performance of the all bio‐based FPU foam was enhanced at low frequency, and the density was lower than that of the reference foam. Additionally, the addition of POP also improved the compressive strength. Conversely, the tensile strength of FPU foam declined with increasing POP content. From this study, the outstanding acoustic ability of bio‐based FPU foam has been proved, with additional advantages of lower density and higher compressive strength. © 2019 Society of Chemical Industry

Foam stability and thermo-mechanical properties of micro/nano filler loaded castor oil based flexible polyurethane foam

“…In recent times, research is focused towards investigating the incorporation of environment friendly (i.e., vegetable derived) constituents for the synthesis of polyurethane foam [3,4]. Various vegetable oils and plant derived polyols such as soy oil [5][6][7][8][9][10], rapeseed oil [11,12], palm oil [13][14][15][16], castor oil [17][18][19][20][21][22][23][24][25][26][27], olive oil [28], and lignocellulose [29,30] are used in the synthesis of flexible polyurethane foams as an alternate polyol which is blended with synthetic polyol. Most of the vegetable oils and plant derived polyol requires modification by chemical reaction for introducing hydroxyl group in their parent chain [31].…”

Synthesis and acoustic properties study of castor‐oil‐based polyurethane foams with the addition of graphene‐oxide‐modified straw fibers

“…Marcovich et al 22 made two homemade palm oil polyols to replace part of petroleum polyols to prepare green PUs and gained excellent mechanical properties. Zhang and Chen 23 prepared palm-oilbased PUF and analyzed the effect of palm oil polyol content on the microscopic morphology and acoustic and mechanical properties of flexible PU. Ji and Chen 24 prepared double-layer composite PUFs using tung-oil-based polyol instead of polyether polyol and analyzed the effect of layer thickness ratio on acoustic properties by theoretical modeling.…”

Reinstating Structural Stability of Castor Oil based Flexible Polyurethane Foam using Glycerol

“…Traditionally, PU foams are synthesized using petroleum derived polyols which are dwindling natural resource seeking viable replacement. Plant-based oils [1] such as palm oil, [2][3][4][5][6] soybean oil, [7][8][9] rapeseed oil, [10][11][12][13] sesame seed oil, [13] cardanol oil, [14] pumpkin seed oil, [13] lignin, [15][16][17] sorbitol, [18] and castor oil [19][20] were potential substitutes for the petroleum-based polyether polyols. Most of these oils need pretreatment in order to incorporate hydroxyl groups into the molecule.…”