Barrier properties of nanocomposites from high-density polyethylene reinforced with natural attapulgite

Ma, Zheng‐Lu; Tsou, Chi‐Hui; Cui, Xuejun; Wu, Jintian; Liu, Lin; Wen, Haoyu; Guzman, Manuel Reyes De; Wang, Chenyu; Liu, Hejun; Xiong, Qincheng; Liao, Bin

doi:10.1016/j.crgsc.2022.100314

Cited by 22 publications

(14 citation statements)

References 39 publications

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“…Recently, Cruz et al 21 demonstrated a 30% improvement in the barrier properties of the PLA modified graphene oxide nanocomposites with the addition of the 2 wt.% of the filler. Similarly, other researchers reported a maximum of 35% enhancement in the barrier properties of the polyethylene nanocomposite using different fillers (from 1.0 to 5.0 wt.%) [22][23][24] . Thus, the main objective of this work is to evaluate the impact of the presence of graphene as a filler in LDPE films, focusing mainly on how the interactions of this 2D material impact the mechanical and oxygen barrier properties of LDPE films.…”

Section: Introductionmentioning

confidence: 57%

Different aspects of polymer films based on low‐density polyethylene using graphene as filler

Medeiros

Nisar

Peter

et al. 2023

J of Applied Polymer Sci

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The focus of the present work is to prepare low‐density polyethylene (LDPE)‐graphene (G) nanocomposite films with improved gas barrier properties by melt extrusion. A narrow range of the graphene (0.05–0.3 wt.%) as filler was used in the LDPE matrix. The rheological analysis indicating that there is no significant influence on the LDPE chains mobility with the addition of filler. The nanocomposites percent crystallinity (Xc%) increase from 25.0% to 31.6% compared to neat LDPE. The X‐ray diffractogram shows a change in width half height of the peak positioned at 26° ((002) plane) from 0.69 (graphite) to 1.24 (graphene), revealing the asymmetry of this plane. The optical microscopy images show a good dispersion of the nanoparticles in the polymer matrix. The mechanical properties of the nanocomposites in longitudinal direction demonstrate better improvement with addition of the filler as compared to the transverse direction. The contact angle measurements of nanocomposites for water and ethylene glycol do not shows a significant variation in comparison to neat LDPE. The nanocomposites show 26% enhancement in the oxygen barrier property. Thus, here we present the cost‐effective LDPE‐graphene nanocomposites with improve oxygen barrier property, which can be used in different industrial application especially in food packaging.

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Section: Introductionmentioning

confidence: 57%

Different aspects of polymer films based on low‐density polyethylene using graphene as filler

Medeiros

Nisar

Peter

et al. 2023

J of Applied Polymer Sci

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“…Tsou et al , described a method for measuring water absorption. The nanocomposite material was cut to a 15 mm × 15 mm sample, which was in turn placed in a vacuum oven for drying at 80 °C for 24 h. After that, it was weighed.…”

Section: Testing and Characterizationmentioning

confidence: 99%

Barrier and Biodegradable Properties of Poly(butylene adipate-co-terephthalate) Reinforced with ZnO-Decorated Graphene Rendering it Antibacterial

Tsou

Liu

et al. 2023

ACS Appl. Polym. Mater.

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In this paper, ZnO-decorated graphene (ZnO-graphene) was added to poly(butylene adipate-co-terephthalate) (PBAT) and maleic anhydride-grafted poly(butylene adipate-co-terephthalate) (PBAT-g-MAH) to prepare antibacterial nanocomposites through melt blending. The effect of different amounts of ZnO-graphene on the properties of the nanocomposite materials was discussed. The results of Fourier transform infrared (FTIR) analysis showed that PBAT-g-MAH could form coordination reaction and hydrogen bond with ZnO-graphene, and this synergistically enhanced the tensile properties of the nanocomposites. With the introduction of functional groups, the mechanical properties of PBAT-g-MAH/ZnO-graphene nanocomposites were significantly improved. Compared with pure PBAT, the nanocomposites showed that the maximum tensile strength, yield strength, and elongation at break increased by 20.58, 17.04, and 7.51%, respectively. This work revealed for the first time through X-ray diffraction tests the probable mechanism of dispersion or compatibility in the nanocomposites. Water absorption properties and water contact angle data proved that the introduction of MAH, along with the optimal amount of nanofillers, could greatly improve the tightness of internal and surface structures of the nanocomposites. Relative to PBAT, the use of PBAT-g-MAH/ZnO-graphene containing 0.6% nanofillers significantly improved the water vapor and oxygen barrier efficiencies by 152.8 and 273.5%, respectively. It was shown from the results of antibacterial evaluation that ZnO-graphene could impart PBAT and PBAT-g-MAH with excellent antibacterial activity. Compared with pure PBAT, the nanocomposite films had better mechanical and barrier properties. Both PBAT and PBAT-g-MAH nanocomposites could decompose naturally in soil, indicating that they were environmentally friendly and would have great application prospect in the fields of packaging and medical industries.

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“…This may be due to the fibrous crystal structure of ATP, which can strengthen the tensile properties of the polymer. 13 Tensile strength, strain at break, elastic modulus, and hardness were statistically analyzed. Table 3 shows the statistical differences when comparing the composites HDPE/ ATPa with neat HDPE and LLDPE/ATPa with neat LLDPE.…”

Section: Mechanical Characterizationmentioning

confidence: 99%

“…Ma et al 13 studied the addition of ATP modified by sodium hexametaphosphate in HDPE nanocomposites. Nanocomposites were prepared by melting followed by hot pressing.…”

Section: Introductionmentioning

confidence: 99%

“…These characteristics are great differentials compared to other inorganic fillers. 13 ATP generally occurs in soils of semi-arid and arid regions of the world, being found mainly in China, USA, Brazil, Spain, Russia, Senegal, and India. 14 In Brazil, the main ATP deposits are located in the city of Guadalupe (Piauí), covering an area of about 700 km 2 .…”

Section: Introductionmentioning

confidence: 99%

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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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Barrier properties of nanocomposites from high-density polyethylene reinforced with natural attapulgite

Cited by 22 publications

References 39 publications

Different aspects of polymer films based on low‐density polyethylene using graphene as filler

Different aspects of polymer films based on low‐density polyethylene using graphene as filler

Barrier and Biodegradable Properties of Poly(butylene adipate-co-terephthalate) Reinforced with ZnO-Decorated Graphene Rendering it Antibacterial

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

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