Effects of water hyacinth fiber size on sound absorption properties of advanced recycled palm oil-based polyurethane foam composite

Sukhawipat, Nathapong; Yingshataporn-a-nan, Thanathach; Minanandana, Tanapat; Puksuwan, Kitchapat; Saengdee, Laksana; Nakaramontri, Yeampon; Sosa, Narongrit; Saetung, Nitinart

doi:10.1016/j.matpr.2021.10.417

Cited by 9 publications

(7 citation statements)

References 19 publications

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“…The acid number for free acid in UPO and residual acid after the reaction in MUPO rose slightly from 1.41 to 1.76 mgKOH/g. These findings suggested that UPO is effectively changed by oxidation and hydroxylation to mUPO, which corresponded to the previous works [ 27 , 28 , 29 ].…”

Section: Resultssupporting

confidence: 91%

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The Use of New Waste-Based Plasticizer Made from Modified Used Palm Oil for Non-Glutinous Thermoplastic Starch Foam

et al. 2022

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A novel waste-based plasticizer derived from modified used palm oil (mUPO) was successfully developed and has been used as a new plasticizer to non-glutinous thermoplastic starch foam to improve their properties. The molecular weight and hydroxyl number of the mUPO was 3150 g/mol and 192.19 mgOH/g, respectively. The effects of mUPO content ranging from 0 to 9 phr were investigated. The results revealed that the optimal mUPO content as an additive was 6 wt%. The addition of mUPO had a direct effect on the mechanical properties and thermal properties. The impact strength increased from 1.30 to 4.55 J/m, while the glass transition temperature (Tg) decreased from 70.83 to 66.50 °C by increasing mUPO from 0 phr to 6 phr in the thermoplastic starch foam. The mUPO, on the other hand, has also the potential to reduce shrinkage from 33.91 to 21.77% and moisture absorption from 5.93 to 1.73% by increasing the content from 0 phr to 6 phr in starch foam. Furthermore, the mUPO helps the forming of the foam structure as measured by SEM, and the mUPO utilization of waste-based material could be a promising green alternative plasticizer for starch components, especially starch foam applications.

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Section: Resultssupporting

confidence: 91%

“…The chemical structure confirmation of UPO and mUPO has been reported in our previous work [ 27 , 28 , 29 , 30 ]. The figure of 1 H-NMR spectra and FTIR spectra is presented in Figures S1 and S2 , respectively.…”

Section: Methodssupporting

confidence: 74%

The Use of New Waste-Based Plasticizer Made from Modified Used Palm Oil for Non-Glutinous Thermoplastic Starch Foam

et al. 2022

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“…Also, the HCMF sound absorbent composites that are composed of a greater amount of HCM are proved to exhibit higher sound absorption coefficients at high frequencies. Therefore, the incorporation of HCM as the filler for PU foam is effective in improving the sound absorptivity of composites in this study, exemplifying a synergistic mechanism [ 13 , 14 , 15 , 18 , 25 , 31 ]. Similarly, Sung et al studied the difference in the sound absorptivity of PU foam, which was found to be dependent on the addition of hollow ceramic microspheres, as well as the resulting structural resonance.…”

Section: Resultsmentioning

confidence: 98%

Functional Hollow Ceramic Microsphere/Flexible Polyurethane Foam Composites with a Cell Structure: Mechanical Property and Sound Absorptivity

et al. 2022

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Noise pollution is the primary environmental issue that is increasingly deteriorated with the progress of modern industry and transportation; hence, the purpose of this study is to create flexible PU foam with mechanical properties and sound absorption. In this study, hollow ceramic microsphere (HCM) is used as the filler of polyurethane (PU) foam for mechanical reinforcement. The sound absorption efficacy of PU pores and the hollow attribute of HCM contribute to a synergistic sound absorption effect. HCM-filled PU foam is evaluated in terms of surface characteristic, mechanical properties, and sound absorption as related to the HCM content, determining the optimal functional flexible PU foam. The test results indicate that the presence of HCM strengthens the stability of the cell structure significantly. In addition, the synergistic effect can be proven by a 2.24 times greater mechanical strength and better sound absorption. Specifically, with more HCM, the flexible PU foam exhibits significantly improved sound absorption in high frequencies, suggesting that this study successfully generates functional PU foam with high mechanical properties and high sound absorption.

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“…Lastly, the mUPO was further analyzed for its iodine value, acid value and hydroxyl value. The chemical structure con rmation of UPO and mUPO has been reported in our previous work [23][24][25][26].…”

Section: Methodsmentioning

confidence: 94%

“…Similarly, Tarique et al [25] investigated the effects of glycerol plasticizer on the properties of arrowroot (Maranta arundinacea) starch biopolymers. The brittleness and fragility of the investigated starch lm could be reduced by adding more glycerol to the lm.…”

Section: The Mechanical Properties Of Thermoplastic Nonglutinous Star...mentioning

confidence: 99%

Modified Used Palm Oil Polyols – A New Waste-based Plasticizer for Thermoplastic Non-glutinous Starch Foam

Sukhawipat

2022

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In this paper, a novel waste-based plasticizer derived from modified Used Palm Oil (mUPO) was successfully developed and used as an essential additive to thermoplastic non-glutinous starch foam to improve its properties. The molecular weight and hydroxyl number of the mUPO that was being explored was 3,150 g/mol and 192.19 mg.KOH/g, respectively. The key results revealed that the optimal mUPO content enhances the mechanical properties and thermal properties of thermoplastic starch. Furthermore, the superlative mUPO content facilitate the forming of foam structure. All these results indicate that the proper utilization of wasted-based material such as mUPO is a promising solution to achieve a green alternative plasticizer for starch components, especially starch foam applications.

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Effects of water hyacinth fiber size on sound absorption properties of advanced recycled palm oil-based polyurethane foam composite

Cited by 9 publications

References 19 publications

The Use of New Waste-Based Plasticizer Made from Modified Used Palm Oil for Non-Glutinous Thermoplastic Starch Foam

The Use of New Waste-Based Plasticizer Made from Modified Used Palm Oil for Non-Glutinous Thermoplastic Starch Foam

Functional Hollow Ceramic Microsphere/Flexible Polyurethane Foam Composites with a Cell Structure: Mechanical Property and Sound Absorptivity

Modified Used Palm Oil Polyols – A New Waste-based Plasticizer for Thermoplastic Non-glutinous Starch Foam

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