Functionalized cellulose nanocrytals (fCNCs) reinforced PolyHIPEs: Tailoring morphological, mechanical and thermal properties

Mert, Hatice Hande; Moghbeli, Mohammad Reza; Sajad, Safoora; Mert, Emine Hilal

doi:10.1016/j.reactfunctpolym.2020.104572

Cited by 21 publications

(25 citation statements)

References 51 publications

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“…XRD diffraction maxima are recorded at 2θ values of around 15°, 16°, 22°, and 34°. These peaks are characteristic of the cellulose and can be attributed to the crystalline planes (hkl) (101), (10-1), (002), and (040), respectively, attributed to cellulose I crystal structure [20,27,28]. Furthermore, the crystallinity index (CrI) was calculated using Equation 1, resulting in a 75% for CRS.…”

Section: Desorption Experimentsmentioning

confidence: 99%

Application of a Low-Cost Cellulose-Based Bioadsorbent for the Effective Recovery of Terbium Ions from Aqueous Solutions

Alcaraz¹,

Saquinga²,

López³

et al. 2020

Preprint

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Preparation of a low-cost cellulose-based bioadsorbent from the cellulosic material extracted from the rose stems (CRS) was carried out; rose stems were considered agricultural wastes. After the required pretreatment of this waste, and its further treatment with an acidic mixture of acetic and nitric acids, the CRS product was yielded. The resulting bioadsorbent was characterized by several techniques, such as X-ray diffraction, which revealed diffraction maxima related to cellulose structure, whose calculated crystallinity index (CrI) was 75 %. In addition, Fourier Transform Infrared spectroscopy (FTIR), 13C Nuclear Magnetic Resonance (NMR), and X-ray Photoelectron Spectroscopy (XPS) showed signs of acetylation of the sample, also, the thermal properties of the solid was evaluated through Thermogravimetric Analysis (TGA). Scanning Electron Microscopy (SEM) showed cellulose fibers before and after the adsorption process, some particles with not regular shapes were also observed. The CRS bioadsorbent was used in the effective adsorption of valuable Tb(III) from aqueous solution. The adsorption data resulted in a better fit to the Freundlich isotherm, and pseudo-second-order kinetic models; however, chemisorption had not been ruled out. Finally, desorption experiments revealed a recovery of terbium ions with an efficiency of 97 % from terbium-loaded bioadsorbent.

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Section: Desorption Experimentsmentioning

confidence: 99%

Application of a Low-Cost Cellulose-Based Bioadsorbent for the Effective Recovery of Terbium Ions from Aqueous Solutions

Alcaraz¹,

Saquinga²,

López³

et al. 2020

Preprint

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“…On the other hand, polyHIPEs are low‐density materials usually demonstrating low mechanical strength due to the macroporous structure. [ 5,8,10,11 ] In addition, specific surface area of polyHIPEs is usually below then 50 m 2 /g due to the lack of micropores and mesopores. [ 12,13 ] Although the highly permeable nature of polyHIPEs plays an important role for applications, the low mechanical strength and surface area of these materials create disadvantages for many applications.…”

Section: Introductionmentioning

confidence: 99%

Preparation of polyHIPE nanocomposites: Revealing the influence of experimental parameters with the help of experimental design approach

Mert

2020

Polymer Composites

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Controlling the morphology and physical properties of poly(high internal phase emulsion)s (polyHIPEs) is critical for the development of well‐defined porosity with improved mechanical properties for industrial applicability. Therefore, in this study, experimental design methodology was used to prepare polystyrene based polyHIPE nanocomposites. A surface modified nanoclay was used to reinforce the chalky and brittle polystyrene, and the effect of nanoclay loading was investigated studiously. Emulsion stability has not been compromised due to the presence of modifier groups on the nanoclay surface. A total of 36 samples were produced according to the experimental design matrix. The relationship between the emulsion preparation conditions and final polyHIPE properties including cavity size, interconnected pore size, compression modulus, specific surface area, average pore volume, skeletal density, and foam density were determined by using a statistical software for a 95% confidence level (α = 0.05). In this way, in addition to deriving the empirical model equations for each property, the mutual and synergistic interactions of experimental parameters were also determined.

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“…In addition, limited source of petroleum‐based monomers is also another disadvantage that cannot be ignored. To overcome these drawbacks, several approaches, such as replacing monomer system, 11,15,16 using a stress reducer monomer, 9,10 or incorporating reinforcement nanoparticles, 8,9,11,17,18 have been used by scientists. In this respect, incorporating nanoclay particles in the polymer matrix have been attracting much of interest while there several studies addressing the preparation of polyHIPE/nanoclay composites and nanocomposites have been reported 17,19–25 .…”

Section: Introductionmentioning

confidence: 99%

“…Previous studies showed that incorporating nanoparticles in the polyHIPE matrix brings additional advantages depending on the nature of the choosen nanoparticles. For instance, nanoparticles may provide additional sites for crosslinking, 2,5,20 add functionality to the polymer, 12,13 and improve morphological, thermal, and mechanical properties 11,17–27 …”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Synthesis of β‐myrcene‐based macroporous nanocomposite foams: Altering the morphological and mechanical properties by using organo‐modified nanoclay

Kekevi

Mert

2020

J of Applied Polymer Sci

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Organo‐modified nanoclay incorporated high internal phase emulsions (HIPEs) were successfully used for the preparation of macroporous nanocomposite foams. Due to the aim of obtaining mechanically improved foams, HIPEs were prepared by using a monomer mixture composed of β‐myrcene and ethylene glycol dimethacrylate. Accordingly, two groups of macroporous nanocomposite foams were synthesized depending on the nanoclay type. The morphological analysis demonstrated that the pore openness of the resulting nanocomposites were significantly improved due to the decrease in the average cavity size and increase in the interconnected pore size. In terms of mechanical properties, it was found that filling 1 wt% of nanoclay which is surface modified by hydrogenated tallow lead to a 33% of increment in the compression modulus, as compared to the neat foam. However, loading 5 wt% of nanoclay having octadecylamine and aminopropyltriethoxysilane surface groups caused only 11% of increment in the compression modulus, as compared to the neat foam.

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Functionalized cellulose nanocrytals (fCNCs) reinforced PolyHIPEs: Tailoring morphological, mechanical and thermal properties

Cited by 21 publications

References 51 publications

Application of a Low-Cost Cellulose-Based Bioadsorbent for the Effective Recovery of Terbium Ions from Aqueous Solutions

Application of a Low-Cost Cellulose-Based Bioadsorbent for the Effective Recovery of Terbium Ions from Aqueous Solutions

Preparation of polyHIPE nanocomposites: Revealing the influence of experimental parameters with the help of experimental design approach

Synthesis of β‐myrcene‐based macroporous nanocomposite foams: Altering the morphological and mechanical properties by using organo‐modified nanoclay

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