Polyvinylidenefluoride/Poly(styrene-butadiene-styrene)/Silver Nanoparticle-<i>grafted-</i>Acid Chloride Functional MWCNTs-Based Nanocomposites: Preparation and Properties

2017

Int J Plast Technol

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Impregnating polymeric membranes with inorganic zeolite particles and organic carbon nanotube particles led to organic-inorganic nanocomposite membranes. In this work, nano-zeolite (NZ) and carbon nanotube (CNT) were used as nanofiller materials, while poly(1-hexadecene-sulfone)/poly(1,4-phenylene sulfide) (PHS/PS) blend was used as matrix material. PHS/PS/NZ membranes have shown fine dispersion, although layered-particulate morphology was seen in PHS/PS/NZ-CNT 10 membrane. Tensile strength of PHS/PS/NZ 1-10 was 53-58 MPa, while PHS/PS/NZ-CNT 1-10 showed higher values 67-78 MPa. Young's Modulus of PHS/PS/NZ 1-10 was 122.2-137.7 MPa, while PHS/PS/NZ-CNT 1-10 showed higher values 143.4-166.5 MPa. Moreover, the nano-zeolite/carbon nanotube (NZ-CNT) filler was found more effective than nano-zeolite in enhancing CO 2 permeability and permselectivity. The permeability PCO 2 of PHS/PS/NZ and PHS/PS/ NZ-CNT membranes increased with increasing filler concentration and reached 177.3 Barrer at 10 wt% filler content. The permselectivity aCO 2 /N 2 for PHS/PS/ NZ-CNT 10 membrane (36.1 Barrer) was also higher than PHS/PS/NZ 10 (32.9 Barrer).

Section: Introductionmentioning

confidence: 98%

Design of poly(1-hexadecene-sulfone)/poly(1,4-phenylene sulfide) membrane containing nano-zeolite and carbon nanotube for gas separation

2017

Int J Plast Technol

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“…Solvent evaporation methodology is commonly used for these membranes. Melt compounding has also been employed as preferred technique [16][17][18]. According to morphology investigation, zeolite may form large clusters in polycarbonate membrane.…”

Section: Introductionmentioning

confidence: 99%

Polycarbonate/Polypropylene-Graft-Maleic Anhydride and Nano-Zeolite-Based Nanocomposite Membrane: Mechanical and Gas Separation Performance

Advances in Materials Science

2016

In this effort, blend membrane of polycarbonate (PC) and polypropylene-graft-maleic anhydride (PPMA) was fabricated via phase inversion technique. The nano-zeolite (NZ) was employed as nanofiller. Morphology of PC/PPMA/NZ membrane revealed unique inter-connected branched microstructure. Tensile strength and Young's Modulus of PC/PPMA/NZ 0.1-5 were in the range of 59.9-74.5 MPa and 111.4-155.2 MPa respectively. The nano-zeolite filler was also effective in enhancing the permselectivity αCO 2 /N 2 (23.5 to 38.5) relative to blend membrane (20.3). The permeability P CO2 of PC/PPMA/NZ 5 membrane was found as 106.2 Barrer. Filler loading enhanced gas diffusivity, however filler content did not significantly influence CO 2 and N 2 solubility.

“…Later, 300 mL of deionized water was added to the above mixture. The mixture was filtered using cellular membrane filter paper and washed several times with deionized water to obtain pH ∼ 6.5 [25].…”

Section: Purification and Functionalization Of Multiwalled Carbon Nanmentioning

confidence: 99%

Investigation on Nanocomposite Membrane of Multiwalled Carbon Nanotube Reinforced Polycarbonate Blend for Gas Separation

Journal of Nanomaterials

2016

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Carbon nanotube has been explored as a nanofiller in high performance polymeric membrane for gas separation. In this regard, nanocomposite membrane of polycarbonate (PC), poly(vinylidene fluoride-co-hexafluoropropylene) (PVFHFP), and multiwalled carbon nanotube (MWCNT) was fabricated via phase inversion technique. Poly(ethylene glycol) (PEG) was employed for the compatibilization of the blend system. Two series of PC/PVFHFP/PEG were developed using purified P-MWCNT and acid functional A-MWCNT nanofiller. Scanning and transmission electron micrographs have shown fine nanotube dispersion and wetting by matrix, compared with the purified system. Tensile strength and Young’s modulus of PC/PVFHFP/PEG/MWCNT-A 1–5 were found to be in the range of 63.6–72.5 MPa and 110.6–122.1 MPa, respectively. The nanocomposite revealed 51% increase in Young’s modulus and 28% increase in tensile stress relative to the pristine blend. The A-MWCNT was also effective in enhancing the permselectivity αCO2/N2 (31.2–39.9) of nanocomposite membrane relative to the blend membrane (21.6). The permeability PCO2 of blend was 125.6 barrer; however, the functional series had enhanced PCO2 values ranging from 142.8 to 186.6 barrer. Moreover, A-MWCNT loading improved the gas diffusivity of PC/PVFHFP/PEG/MWCNT-A 1–5; however, filler content did not significantly influence the CO2 and N2 solubility.