Bionanocomposites of regenerated cellulose/zeolite prepared using environmentally benign ionic liquid solvent

Soheilmoghaddam, Mohammad; Wahit, Mat Uzir; Wong, Tuck‐Whye; Akos, Noel Ibrahim; Pour, Raheleh Heidar; Yussuf, Abdirahman Ali

doi:10.1016/j.carbpol.2014.02.085

Cited by 49 publications

(19 citation statements)

References 47 publications

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“…The chemical shift for SiF 6 2-has been reported in several studies and usually falls in the range of -120 to -130 ppm. [24][25][26] According to a previous study, the resonance at -68.5 ppm corresponds to the fluoride that is covalently bonded to Si(9) of the ZSM-5 framework.…”

Section: Resultsmentioning

confidence: 99%

“…2 Indeed, ionothermal synthesis has been successfully used to synthesize several types of microporous materials such as AlPO 4 -, GaPO 4 -and SAPO-based molecular sieves as well as metal-organic frameworks with existing or novel topologies. [3][4][5][6][7][8][9][10] However, there have been relatively few reports on the preparation of siliceous zeolites mainly due to the poor solubility of silica in the ILs and DESs. 5,[8][9][10][11][12][13][14][15] So far, to the best of our knowledge, there are only six reports on ionothermal syntheses of zeolites.…”

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confidence: 99%

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Syntheses of high-silica zeolites in urea/choline chloride deep eutectic solvent

Lin

Huang

2016

Can. J. Chem.

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This paper presents the first example of high-silica and siliceous zeolite synthesis in the urea/choline chloride mixture as a deep eutectic solvent (DES) using F– as the mineralizing agent. A urea/choline chloride mixture was previously used as solvent to prepare AlPO4-based microporous materials SIZ-2 and AlPO-CJ2. However, generating these materials depends on the formation of ammonium ion as a structure-directing agent (SDA) that is the side product of urea decomposition. In the present study, we show that several highly siliceous zeolites with targeted topologies (MFI, BEA, MEL, and MTN) can be purposely synthesized by adding SDAs of choice rather than relying on solvent decomposition. The Si atoms in zeolite Beta synthesized in a urea/choline chloride mixture exhibit exceptionally high local ordering as shown in a 29Si MAS NMR spectrum. The synthesis of ZSM-11 using eutectic solvents or ionic liquid has not been reported. The major challenge in ZSM-11 synthesis is the intergrown structure formed with ZSM-5 due to the high similarity in their topologies. The present work shows that preparation of pure ZSM-11 can be achieved in urea/choline chloride DES using either DPHMII or DECDMPI as SDA. Using a urea/choline chloride mixture rather than alcohol-based traditional nonaqueous solvents is the key for the success of preparing phase-pure ZSM-11 free of any MFI intergrowths. This is because some alcohols can serve as SDA for MFI. The use of urea/choline chloride based DES eliminates the potential templateing effect of solvent for MFI formation. For MTN zeolite, morphology may be controlled in urea/choline chloride by choosing different SDAs. The disadvantage of this system is the long reaction times.

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Section: Resultsmentioning

confidence: 99%

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confidence: 99%

Syntheses of high-silica zeolites in urea/choline chloride deep eutectic solvent

Lin

Huang

2016

Can. J. Chem.

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“…Soheilmoghaddam et al reported the preparation of a biodegradable and cytocompatible polymer nanocomposite of cellulose and zeolite in the presence of the 1-ethyl-3-methylimidazolium chloride (EMIMCl) ionic liquid [11]. The EMIMCI ionic liquid is used to dissolve the cellulose polymer.…”

Section: Ionic Liquid Assisted Approachmentioning

confidence: 99%

“…These composites demonstrated improved electrical conductivity and excellent microwave broadband absorption properties in the X-band (8.2-12.4 GHz) frequency region, which is due to homogeneous dispersion of graphene nanoplatelets within the thermoplastic polymer matrix. Soheilmoghaddam et al reported the preparation of a biodegradable and cytocompatible polymer nanocomposite of cellulose and zeolite in the presence of the 1-ethyl-3methylimidazolium chloride (EMIMCl) ionic liquid [11]. The EMIMCI ionic liquid is used to dissolve the cellulose polymer.…”

Section: Ionic Liquid Assisted Approachmentioning

confidence: 99%

Green Chemistry Approach for Fabrication of Polymer Composites

Joseph

Krishnan

Kavil

et al. 2021

Sustainable Chemistry

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Solvents are an inevitable part of industries. They are widely used in manufacturing and processing industries. Despite the numerous controlling measures taken, solvents contaminate our environment to a vast extent. Green and sustainable solvents have been a matter of growing interest within the research community over the past few years due to the increasing environmental concerns. Solvents are categorized as “green” based on their nonvolatility, nonflammability, availability, biodegradability and so on. The use of ionic liquids, super critical carbon dioxide and aqueous solvents for the fabrication of polymer composites is discussed in this review. The progress of utilizing solvent-free approaches for polymer composite preparation and efforts to produce new biobased solvents are also summarized.

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“…Regardless of the improvement in flame retardancy properties, the addition of nanofillers to polymers can also result in enhanced mechanical, thermal, electrical, and barrier properties provided that they are dispersed in polymer matrix homogeneously. However, uniform dispersion of nanofiller in the host polymer strongly depends on interfacial interactions . So, the existence of favorable interactions between particle surface groups and the host polymer is vital for having nanocomposites with enhanced properties.…”

Section: Introductionmentioning

confidence: 99%

Ethylene vinyl acetate copolymer nanocomposites based on (un)modified sepiolite: Flame retardancy, thermal, and mechanical properties

et al. 2015

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Flame retardant ethylene-vinyl acetate (EVA) nanocomposites were prepared by melt blending using unmodified and modified sepiolite. Modification process of sepiolite was carried out by using 3-aminopropyltrimethoxysilane in water/ethanol medium. Thermal, mechanical, and flame retardancy properties of the prepared nanocomposites were evaluated and compared with each other. X-ray diffraction and scanning electron microscopy indicated that sepiolite fibers are well-dispersed in EVA matrix. By the addition of (un)modified sepiolite, both flame retardancy and thermal stability characteristics first improved, and then deteriorated, indicating a direct relationship between these properties. It was also found that sepiolite protects carbonyl groups of EVA from further degradation. Most interestingly, a simultaneous increase in both ductility and toughness was observed in the prepared composites. Whatever the evaluated properties were, whether the mechanical, thermal, or flame retardancy, the improved properties were more remarkable when modified sepiolite was utilized. POLYM. COMPOS., 00:000-000, 2015.

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Bionanocomposites of regenerated cellulose/zeolite prepared using environmentally benign ionic liquid solvent

Cited by 49 publications

References 47 publications

Syntheses of high-silica zeolites in urea/choline chloride deep eutectic solvent

Syntheses of high-silica zeolites in urea/choline chloride deep eutectic solvent

Green Chemistry Approach for Fabrication of Polymer Composites

Ethylene vinyl acetate copolymer nanocomposites based on (un)modified sepiolite: Flame retardancy, thermal, and mechanical properties

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