Infrared spectroscopy of the surface of thermally-modified teak juvenile wood

Lopes, Juliana de Oliveira; Garcia, R. Á.; Souza, Natália Dias de

doi:10.4067/s0718-221x2018005041901

Cited by 18 publications

(16 citation statements)

References 14 publications

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“…The increase in lignin content after the thermal modification process was also observed by Kamdem et al (2002), Tjeerdsma and Militz (2005), Esteves et al (2008), González-Peña et al (2009), Brosse et al (2010), Ding et al (2011), Esteves et al (2011), Moura et al (2012) and Sikora et al (2018). According to Esteves et al (2013) and Cademartori et al (2015), the increase in the percentage of lignin is due to the degradation of carbohydrates (hemicelluloses) and the formation of carbonyl groups in lignin (Li et al, 2002;Lopes et al, 2018).…”

Section: Discussionsupporting

confidence: 55%

Behavior of Thermally Modified Wood to Biodeterioration by Xylophage Fungi

Bellon

Monteiro

Klitzke

et al. 2020

CERNE

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Section: Discussionsupporting

confidence: 55%

Behavior of Thermally Modified Wood to Biodeterioration by Xylophage Fungi

Bellon

Monteiro

Klitzke

et al. 2020

CERNE

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“…For NaBH4-SG1.2, the additional peaks observed at 2582, 1194, 1077, and 994 cm -1 were assigned to the C-O stretching modes associated with NaOCH3 [21][22][23][24][25][26][27][28][29]. Such vibrations were not observed at higher molar ratio of NaOCH3 and B2H6 and this confirmed that above a ratio of 1.2, NaOCH3 was fully reacted.…”

Section: Composition Of the As-synthesized Materialsmentioning

confidence: 54%

Direct Synthesis of NaBH4 Nanoparticles from NaOCH3 for Hydrogen Storage

Wang

Aguey‐Zinsou

2019

Energies

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Hydrogen is regarded as a promising energy carrier to substitute fossil fuels. However, storing hydrogen with high density remains a challenge. NaBH 4 is a potential hydrogen storage material due to its high gravimetric hydrogen density (10.8 mass%), but the hydrogen kinetic and thermodynamic properties of NaBH 4 are poor against the application needs. Nanosizing is an effective strategy to improve the hydrogen properties of NaBH 4 . In this context, we report on the direct synthesis of NaBH 4 nanoparticles (~6-260 nm) from the NaOCH 3 precursor. The hydrogen desorption properties of such nanoparticles are reported as well as experimental conditions that lead to the synthesis of (Na 2 B 12 H 12 ) free NaBH 4 nanoparticles.

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“…The highest wavenumber in bioplastics with the addition of 40% glycerol concentration was 3313.80 cm −1 . This hydroxyl group indicated the presence of polymer compounds (Lopes et al, 2018). The di erent concentrations of glycerol plasticizer lead to the di erent transmittance spectrum due to the addition of glycerol which resulted from hydrogen bonds formation (Jannah, 2017).…”

Section: The E Ect Of Type and Concentration Of Plasticizer Onmentioning

confidence: 99%

Effect of Plasticizer and Concentration on Characteristics of Bioplastic Based on Cellulose Acetate from Kapok (Ceiba pentandra) Fiber

Rahmatullah

Putri

Rendana

et al. 2022

Sci.Technol.Indonesia

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The synthetic plastics that made from petroleum material have been widely used in all industrial sectors. They cause some serious problems for the environment. There are semi-synthetic plastics or biodegradable plastics which are made from natural polymers such as cellulose to mitigate this problem. Biodegradable plastics can fulfill the needs of society because they can be decomposed easily into the environment. This research used laboratory experimental methods through several processes: kapok fiber isolation, cellulose acetate production and purification, and manufacture of bioplastics. The characteristics of bioplastics was analyzed using some parameters such as density, tensile strength, elongation, Young's modulus, water absorption, biodegradability, compound group analysis using Fouier-Transform Infrared Spectrometer (FTIR) and bioplastic morphology analysis by using Scanning electrone microscopy (SEM). This study aimed to determine the effect of the plasticizer type and concentration on the bioplastics characteristics that was divided into several different concentrations of glycerol and sorbitol plasticizers (20%, 30%, and 40%). The fabrication of composite bioplastics used the cellulose acetat from kapok fiber, starch, and types of plasticizer (glycerol, and sorbitol). The results of the study showed that the addition of different plasticizers, such as glycerol and sorbitol gave distinct effects on the bioplastics product characteristics. The optimum concentration of glycerol addition affected the bioplastic characteristics with the best results were 40% concentration generate density of 0.836 g/mL, tensile strength of 0.818 MPa, water absorption value of 22.23%, and degradation plastic mass about 39.7%. The addition of sorbitol also affected the bioplastic characteristics, where the best results were 40% concentration produced bioplastic density of 0.941 g/mL, percent elongation at 3.94%, young’s modulus of 0.726 MPa, and degradarion mass of 32.05%. The morphology of bioplastic showed the high homogeneity on concentrations of 40% glycerol and 30% sorbitol.

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Infrared spectroscopy of the surface of thermally-modified teak juvenile wood

Cited by 18 publications

References 14 publications

Behavior of Thermally Modified Wood to Biodeterioration by Xylophage Fungi

Behavior of Thermally Modified Wood to Biodeterioration by Xylophage Fungi

Direct Synthesis of NaBH4 Nanoparticles from NaOCH3 for Hydrogen Storage

Effect of Plasticizer and Concentration on Characteristics of Bioplastic Based on Cellulose Acetate from Kapok (Ceiba pentandra) Fiber

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