Influence of surface modification of attapulgite (ATP) with aminosilane (3-aminopropyl) triethoxysilane for the preparation of LLDPE/ATP nanocomposites

Silva, Thaís Ferreira da; Souza, Gabriel Portilho Monteiro de; Morgado, Guilherme Ferreira de Melo; Albers, Ana Paula Fonseca; Quinteiro, Eduardo; Passador, Fábio Roberto

doi:10.1007/s10965-022-02953-3

Cited by 10 publications

(4 citation statements)

References 54 publications

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“…The XRD patterns of as‐prepared PAT, UiO‐66‐SO 3 H and PAT@UiO‐66‐SO 3 H are presented in Figure 1A. The PAT shows obvious diffraction peaks at 2 θ = 8.4°, 13.6°, 19.8°, 26.6°, which are originated from the crystal planes of (110), (200), (040), and (400), respectively, and those are highly consistent with characteristic diffraction peaks of pristine ATP 32,39 . This phenomenon reveals that the crystallization of ATP is maintained after the surface treatment of PDA, and no new crystalline phase is emerged due to the amorphous phase characteristics of organic PDA 40 .…”

Section: Resultsmentioning

confidence: 62%

“…The PAT shows obvious diffraction peaks at 2θ = 8.4 , 13.6 , 19.8 , 26.6 , which are originated from the crystal planes of (110), ( 200), (040), and (400), respectively, and those are highly consistent with characteristic diffraction peaks of pristine ATP. 32,39 This phenomenon reveals that the crystallization of ATP is maintained after the surface treatment of PDA, and no new crystalline phase is emerged due to the amorphous phase characteristics of organic PDA. 40 In the XRD patterns of PAT@UiO-66-SO 3 H, the diffraction peaks is coinciding with that of UiO-66-SO 3 H, which implies the same coordination status of the Zr cluster between BDC and SO 3 H-BDC linkers.…”

Section: Characterizations Of Pat@ Uio-66-so 3 Hmentioning

confidence: 91%

“…These superiorities endow ATP the most suitable candidate for hybridizing with MOFs materials, which have highly ordered three-dimensional network structure and varies of dimensions from nanometers to micrometers. 32,33 The HKUST-1/ATP, MIL-53@ATP, MOF-5/ATP hybrid materials were successfully prepared and applied in adsorption and catalysis. [34][35][36][37][38] For example, the catalytic performance of HKUST-1 can be rational tailored by hybridizing with carboxyl-functionalized ATP, the prepared HKUST-1/ATP hybrid materials showed improved hydrothermal stability, higher surface area and catalytic activity than HKUST-1.…”

Section: Introductionmentioning

confidence: 99%

“…Besides, ATP possesses abundant surface OH groups for functional modification, and the special microfibrous morphology with scale from several hundred nanometers to several micrometers. These superiorities endow ATP the most suitable candidate for hybridizing with MOFs materials, which have highly ordered three‐dimensional network structure and varies of dimensions from nanometers to micrometers 32,33 . The HKUST‐1/ATP, MIL‐53@ATP, MOF‐5/ATP hybrid materials were successfully prepared and applied in adsorption and catalysis 34–38 .…”

Section: Introductionmentioning

confidence: 99%

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Rational tailoring of architectures and microenvironment on MOFs/natural clay hybrid materials for efficiently boosted performance of hybrid proton exchange membranes

Feng,

Wang,

Liu

et al. 2023

Polymer Composites

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Metal–organic frameworks (MOFs) is now becoming the most fascinating conductive materials due to designable structure and pores at molecular level, and available crystal structure for the study of conduction mechanism. Nevertheless, comparing to the design of molecular structures of MOFs, the hybrid of MOFs with special micro/nano‐structured materials is considered to be a more effective approach for improved properties. In this study, the PAT@UiO‐66‐SO3H hybrid material was constructed with high conductive UiO‐66‐SO3H, a famous kind of MOFs, and polydopamine‐coated natural clay attapulgite (PAT), then the prepared hybrid material was blended with chitosan (CS) to prepare proton exchange membranes (PEMs). Owing to the special architectures and microenvironment, combining with the advantages of composition with UiO‐66‐SO3H and attapulgite, the prepared composite membranes showed considerable improved performances, including tensile strength, thermal and structural stability, fuel resistance ability, conduction and single cell performances. The CS/PAT@UiO‐66‐SO3H‐5 composite membrane exhibited the highly enhanced tensile strength of 67 MPa and improved thermal stability with Tg value of 235°C, as well as the lowest methanol crossover value of 1.2 × 10−6 cm2 s−1. Besides, the highest proton conductivity of 38.8 mS cm−1 at 80°C and power density of 37.9 mWcm−2 was achieved with CS/PAT@UiO‐66‐SO3H‐3 composite membrane, these performances were higher than pristine CS of 22.7 mS cm−1 and 32.2 mW cm−2 respectively. Our investigation reveals great application potential of MOFs based hybrid materials in fabricating of high performance composite PEMs.Highlights PAT@UiO‐66‐SO3H hybrid materials were constructed from MOFs and natural clay. The hybrid materials possessed special architectures and microenvironment. The PAT@UiO‐66‐SO3H introduced consecutive channels and proton sites. The hybrid membranes achieved excellent performances.

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Section: Resultsmentioning

confidence: 62%

Section: Characterizations Of Pat@ Uio-66-so 3 Hmentioning

confidence: 91%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Rational tailoring of architectures and microenvironment on MOFs/natural clay hybrid materials for efficiently boosted performance of hybrid proton exchange membranes

Feng,

Wang,

Liu

et al. 2023

Polymer Composites

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High‐density polyethylene/attapulgite (ATP) nanocomposites: Effect of the organophilization of ATP on the structural, mechanical, and thermal properties

Silva

Morgado

Albers

et al. 2022

J of Applied Polymer Sci

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Organic–inorganic nanocomposites have attracted great interest due to the remarkable improvement in mechanical properties when compared to neat polymers. The use of a low‐cost nanofiller added to good properties becomes attractive to the industry. Attapulgite (ATP) is a very interesting nanofiller alternative, especially when used with polyolefins, as in the case of high‐density polyethylene (HDPE). However, this system is not simple, as HDPE is a nonpolar polyolefin that can cause low dispersion of ATP. One way to increase the interaction between these phases is the surface modification of ATP. In this work, the surface of ATP was modified using trimethylamine hydrochloride. HDPE/ATP nanocomposites with 1 and 5 wt% of raw ATP (ATPr) or organophilic ATP (ATPo) were prepared by extrusion. The effectiveness of the organophilization process of ATP was evaluated by X‐ray diffraction, mechanical properties (Shore D hardness and tensile test), and thermal properties (thermogravimetric analysis and differential scanning calorimetry), contact angle, and scanning electron microscopy. In the HDPE/ATPo nanocomposites, it was possible to observe an improvement in mechanical and thermal properties when compared to HDPE/ATPr nanocomposites. The organophilization of ATP promoted a greater interaction between the phases, contributing to a better dispersion of ATP in the HDPE matrix.

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Mechanical, thermal, rheological, and morphological characterization of polyolefin/activated attapulgite nanocomposites

Silva

Albers

Quinteiro

et al. 2023

J of Applied Polymer Sci

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Linear low‐density polyethylene (LLDPE) and high‐density polyethylene (HDPE) are polyolefins widely used in the packaging sector. Seeking to improve the mechanical properties with good cost‐effectiveness, attapulgite (ATP) was chosen as a reinforcing filler for the polyolefins. ATP is a hydrated magnesium and aluminum clay mineral with a microfibrous morphology, and the purity of this filler depends on the deposit. ATP is associated with the presence of accessory minerals that need to be removed so as not to interfere with its final application. Thus, an ATP purification process was carried out through physical separation and chemical treatment with hydrogen peroxide (H2O2) and sulfuric acid (H2SO4). This purification process despite having a low yield and is very effective in reducing impurities and organic matter. This ATP was named ATPa. LLDPE/ATPa and HDPE/ATPa nanocomposites with the addition of 1, 3, and 5 wt% of ATPa were prepared by extrusion and hot pressing. The mechanical properties (Shore D hardness, tensile tests, and Izod impact strength), thermal properties (differential scanning calorimetry—DSC and thermogravimetric analysis—TGA), X‐ray diffraction, rheological, and transmission scanning microscopy (TEM) were determined for these nanocomposites. The mechanical properties of the nanocomposites increased with the addition of ATPa. HDPE/ATPa nanocomposites showed more promise than LLDPE/ATPa nanocomposites. The addition of 5 wt% ATPa increased the tensile strength by 14% for the HDPE matrix and 5% for the LLDPE matrix and increased the elastic modulus by 46% for HDPE and 26% for LLDPE.

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Influence of surface modification of attapulgite (ATP) with aminosilane (3-aminopropyl) triethoxysilane for the preparation of LLDPE/ATP nanocomposites

Cited by 10 publications

References 54 publications

Rational tailoring of architectures and microenvironment on MOFs/natural clay hybrid materials for efficiently boosted performance of hybrid proton exchange membranes

Rational tailoring of architectures and microenvironment on MOFs/natural clay hybrid materials for efficiently boosted performance of hybrid proton exchange membranes

High‐density polyethylene/attapulgite (ATP) nanocomposites: Effect of the organophilization of ATP on the structural, mechanical, and thermal properties

Mechanical, thermal, rheological, and morphological characterization of polyolefin/activated attapulgite nanocomposites

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