Comparison of natural halloysite with synthetic carbon nanotubes in poly(lactic acid) based composites

Erpek, Canan Esma Yeniova; Özkoç, Güralp; Yilmazer, Ülkü

doi:10.1002/pc.23816

Cited by 35 publications

(18 citation statements)

References 20 publications

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“…Despite its nano-scale dimensions, HNT is harmless even at high concentrations and cytotoxicity causes no problem in production steps (Kamble et al, 2012;Yuan et al, 2015;Churchman et al, 2016). Recently emerging applications of HNT-reinforced polymer nanocomposites have been used in anti-cancer treatment (Du et al, 2010;Liu et al, 2016) with sustained drug-delivery systems (Liu et al, 2014;Lvov et al, 2016), as catalysts (Idumah et al, 2019), as fire-resistant coatings (Huang et al, 2016;Goda et al, 2018;) and as anti-corrosive structures (Erpek et al, 2017;Kausar, 2018).…”

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confidence: 99%

Hybrid nanocomposites of elastomeric polyurethane containing halloysite nanotubes and POSS nanoparticles: tensile, hardness, damping and abrasion performance

Mohamed

Tirkeş

Akar³

et al. 2020

Clay miner.

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Thermoplastic polyurethane (TPU) matrix was reinforced with polyhedral oligomeric silsesquioxane (POSS) and halloysite nanotubes (HNT), both separately and combined. Composite samples were fabricated using a melt-compounding method. Characterization of the composites obtained was performed via tensile and hardness tests, melt-flow index measurements (MFI), abrasion tests, dynamic mechanical analysis (DMA) and scanning electron microscopy (SEM) to investigate the mechanical performance, flow behaviour, tribological characteristics, thermo-mechanical response and morphological properties. The greatest tensile strength value was obtained for the smallest HNT content. Further addition of HNT resulted in agglomerations for both POSS and HNT particles. The shore hardness of TPU was enhanced by filler inclusions. The TPU/POSS composites displayed significant improvement in terms of abrasion resistance compared to TPU at lower loading levels. The DMA study showed that composites containing 0.5% POSS and 1.0% HNT displayed the greatest storage modulus. The glass-transition temperature of TPU shifted to smaller values with the addition of both nanoparticles. The HNT inclusions increased the MFI value of TPU because of their large aspect ratio. Homogeneous mixing of nanoparticles in the TPU matrix was confirmed by a SEM study of the composites. Their dispersion decreased as the concentrations of POSS and HNT increased. An adjuvant effect of POSS with HNT was achieved in their hybrid composites.

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confidence: 99%

Hybrid nanocomposites of elastomeric polyurethane containing halloysite nanotubes and POSS nanoparticles: tensile, hardness, damping and abrasion performance

Mohamed

Tirkeş

Akar³

et al. 2020

Clay miner.

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“…The average pore size changed slightly while the specific surface area was reduced remarkably, which can be attributed to the strong oxidizing properties of nitric acid and the chemical reaction of the oxygen-containing functional groups on the surface of the UFBC. Therefore, the rough surface became smooth [29]. The maximum surface area of 7.49 m 2 Ág 21 and total pore volume of 0.018 cm 3 Ág 21 were obtained with 39 wt% concentration in the case of HNO 3 treatment.…”

Section: Porosity Analysismentioning

confidence: 93%

Surface modification of bamboo‐char and its reinforcement in PLA biocomposites

et al. 2018

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High‐temperature bamboo‐char is a potential polymer reinforcement due to its porous structure, high strength and modulus. To improve the surface structure and properties of bamboo‐char, different concentrations of HNO3 and NaOH solution modifications were conducted. The HNO3 treatment grafted amino groups on bamboo‐char and NaOH treatment modified carbonyl and carboxyl groups. The specific surface area and the total pore volume of bamboo‐char reduced with HNO3 treatment, whereas the two values firstly increased and then decreased in the case of NaOH treatment; the maximum values of 30.422 m2·g−1 and 0.066 cm3·g−1 were reached at 10 wt% NaOH concentration. The maximum tensile strength and modulus of PLA/bamboo‐char composites were achieved up to 65.36 and 1012.0 MPa at 15 wt% NaOH concentration. The maximum elongation at break was reached at 15.36% and impact strength of 25.69 KJ·m−2 were obtained at the HNO3 concentration of 39 and 54 wt%, respectively. These results will help to extend the application of bamboo‐char in polymer composites. POLYM. COMPOS., 39:E633–E639, 2018. © 2018 Society of Plastics Engineers

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“…Melt‐blending has been widely used to prepare PLA/nanoclay nanocomposites. [ 3, 7, 24, 43, 44, 47–49, 99, 114–126 ] Ray and Okamoto [ 43 ] conducted extensive characterization of PLA/OMMT nanocomposites prepared by melt processing. Nanocomposites containing 3, 5, and 7 wt% OMMT (MMT modified with octadecyl ammonium cation, designated as C18‐MMT), designated as PLACN3, PLACN5, and PLACN7, respectively, were produced in a twin screw extruder (TSE) and converted into 0.7–2 mm thick sheets for characterization studies.…”

Section: Processing and Characterization Of Pla Nanocompositesmentioning

confidence: 99%

An overview of the recent advances in polylactide‐based sustainable nanocomposites

Banerjee¹,

Ray

2021

Polymer Engineering & Sci

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The article reports recent advances in reference to the existing literature and presents a knowledge gap and potential solution ideas for polylactide (PLA) nanocomposites as sustainable materials. Various types of nanoparticles have been used for the development of PLA nanocomposites; however, this work focuses on PLA nanocomposites of nanoclay, nanocelluloses, carbon nanotube, and graphene. By providing a wholistic overview of the fundamental knowledge pertaining to PLA, and covering all critical aspects related to processing, characterization, and applications of PLA nanocomposites, this review provides a direction for future developments in the field of PLA nanocomposites suitable for various advanced applications, which is still scarce in the literature, including review articles. Moreover, the effects of dispersion/distribution of various types of nanoparticles on the degradation characteristics and special properties, such as cytocompatibility, electrical conductivity, and antimicrobial properties, of PLA nanocomposites are critically reviewed with regard to the nature of nanoparticles used for nanocomposite formation. In summary, this review provides new insight into the design and formulation of advanced PLA nanocomposites for a wide range of applications as sustainable materials.

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Comparison of natural halloysite with synthetic carbon nanotubes in poly(lactic acid) based composites

Cited by 35 publications

References 20 publications

Hybrid nanocomposites of elastomeric polyurethane containing halloysite nanotubes and POSS nanoparticles: tensile, hardness, damping and abrasion performance

Hybrid nanocomposites of elastomeric polyurethane containing halloysite nanotubes and POSS nanoparticles: tensile, hardness, damping and abrasion performance

Surface modification of bamboo‐char and its reinforcement in PLA biocomposites

An overview of the recent advances in polylactide‐based sustainable nanocomposites

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