Effects of Surface Modification with Stearic Acid on the Dispersion of Some Inorganic Fillers in PE Matrix

Tung, Nguyen Thanh; Nguyen, Van Khoi; Phạm, Thị Thu Hà; Pham, Thu Trang; Nguyễn, Tùng Lâm

doi:10.3390/jcs5100270

Cited by 13 publications

(4 citation statements)

References 20 publications

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“…The peaks at 1550 cm À 1 and 1400 cm À 1 correspond to asymmetric and symmetric stretching vibrations of coordinated COO À group. [56,57] This suggests that stearic acid is bound to the surface of ZnO NRs. The IR band at about 1460 cm À 1 corresponds to bending of À CH 2 groups in the stearic acid modified ZnO NRs.…”

Section: X-ray Diffraction (Xrd)mentioning

confidence: 99%

Surface Modification of ZnO Nanorods using Stearic Acid and their Self‐cleaning and Photocatalytic Applications

Narwal,

Jeevanandam

2023

ChemistrySelect

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In the current study, a cost‐effective simple strategy has been developed for the surface modification of ZnO nanorods (NRs). The ZnO NRs were surface modified using stearic acid. The ZnO NRs and stearic modified ZnO NRs were characterized using various analytical techniques. FT‐IR, TGA, and CHO analyses prove successful surface modification of ZnO NRs with stearic acid. FE‐SEM and TEM analyses show no change in morphology of ZnO NRs before and after the surface modification. The stearic acid modified ZnO NRs show water contact angle greater than 90° which suggests their hydrophobic nature. XPS analysis shows presence of Zn2+ and O2− in pure ZnO and the stearic acid modified ZnO NRs. The stearic acid modified ZnO NRs were explored for self‐cleaning and they were also tested as catalyst for photocatalytic degradation of crystal violet in an aqueous solution. Kinetics and recyclability studies were also carried out for the photodegradation of crystal violet using the stearic acid modified ZnO NRs.

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Section: X-ray Diffraction (Xrd)mentioning

confidence: 99%

Surface Modification of ZnO Nanorods using Stearic Acid and their Self‐cleaning and Photocatalytic Applications

Narwal,

Jeevanandam

2023

ChemistrySelect

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“…The use of glass spheres is recommended by the possibility offered by this material to modify the surface with various organic compounds, which can influence the selectivity of the process [51,52]. However, the materials for making the spheres of such a module must remain technically and economically accessible and not disturb the study of the influence of a certain physical-chemical parameter of the proposed membrane system-given that the destination of a module with the design based on bulk liquid membranes remains the laboratory experiment.…”

Section: Influence Of the Nature Of The Materials For Making Contact ...mentioning

confidence: 99%

pH and Design on n–Alkyl Alcohol Bulk Liquid Membranes for Improving Phenol Derivative Transport and Separation

et al. 2022

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Regardless of the type of liquid membrane (LM) (Bulk Liquid Membranes (BLM), Supported Liquid Membranes (SLM) or Emulsion Liquid Membranes (ELM)), transport and separation of chemical species are conditioned by the operational (OP) and constructive design parameters (DP) of the permeation module. In the present study, the pH of the aqueous source phase (SP) and receiving phase (RP) of the proposed membrane system were selected as operational parameters. The mode of contacting the phases was chosen as the convective transport generator. The experiments used BLM-type membranes with spheres in free rotation as film contact elements of the aqueous phases with the membrane. The target chemical species were selected in the range of phenol derivatives (PD), 4–nitrophenol (NP), 2,4–dichlorophenol (DCP) and 2,4–dinitrophenol (DNP), all being substances of technical-economic and environmental interest. Due to their acid character, they allow the evaluation of the influence of pH as a determining operational parameter of transport and separation through a membrane consisting of n–octanol or n–decanol (n–AlcM). The comparative study performed for the transport of 4–nitrophenol (NP) showed that the module based on spheres (Ms) was more performant than the one with phase dispersion under the form of droplets (Md). The sphere material influenced the transport of 4–nitrophenol (NP). The transport module with glass spheres (Gl) was superior to the one using copper spheres (Cu), but especially with the one with steel spheres (St). In all the studied cases, the sphere-based module (Ms) had superior transport results compared to the module with droplets (Md). The extraction efficiency (EE) and the transport of 2,4–dichlorophenol (DCP) and 2,4–dinitrophenol (DNP), studied in the module with glass spheres, showed that the two phenolic derivatives could be separated by adjusting the pH of the source phase. At the acidic pH of the source phase (pH = 2), the two derivatives were extracted with good results (EE > 90%), while for pH values ranging from 4 to 6, they could be separated, with DCP having doubled separation efficiency compared to DNP. At a pH of 8 in the source phase, the extraction efficiency halved for both phenolic compounds.

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“…Self-assembly of these molecules has been studied by some groups [5][6][7]. Stearic acid is used as dispersant, filler, softener, activator, and lubricant in the industry [8][9][10][11][12]. It is known that stearic acid and zinc oxide cause sulfur vulcanization of rubber [13].…”

Section: Introductionmentioning

confidence: 99%

OPTICAL CHARACTERIZATION of STEARIC ACID POWDER and ITS USE for THE SYNTHESIS of NANOPARTICLES

Allahverdi

2023

Eskişehir Teknik Üniversitesi Bilim Ve Teknoloji Dergisi B - Teorik Bilimler

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Fatty acids are found in the structure of triglycerides and phospholipids which have vital importance for the life. Stearic acid is an important member of the fatty acids. It is used in the manufacturing of various products such as soaps, detergents, and rubbers. It is valuable to provide a thermal and optical characterization database of stearic acid. In this study, a comprehensive database has been prepared by studying thermogravimetric analysis, X-ray powder diffraction, dispersive Raman and Fourier transform infrared spectroscopies of stearic acid. Its thermal decomposition temperature, X-ray diffraction angles and infrared vibrational modes have been determined. Stearic acid has been used at the synthesis of cadmium selenide quantum dots, bismuth nanoparticles and mixed copper/zinc nanocrystals. Hot-injection and one-pot synthesis methods have been utilized to synthesize these nanostructures. Their sizes, distributions, shapes, elemental compositions, and crystalline structures have been investigated by transmission electron microscopy and energy dispersive X-ray analysis. Mixed copper/zinc nanocrystals have also been examined by X-ray diffraction spectroscopy.

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Effects of Surface Modification with Stearic Acid on the Dispersion of Some Inorganic Fillers in PE Matrix

Cited by 13 publications

References 20 publications

Surface Modification of ZnO Nanorods using Stearic Acid and their Self‐cleaning and Photocatalytic Applications

Surface Modification of ZnO Nanorods using Stearic Acid and their Self‐cleaning and Photocatalytic Applications

pH and Design on n–Alkyl Alcohol Bulk Liquid Membranes for Improving Phenol Derivative Transport and Separation

OPTICAL CHARACTERIZATION of STEARIC ACID POWDER and ITS USE for THE SYNTHESIS of NANOPARTICLES

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