Synthesis and application of PDMS/OP-POSS membrane for the pervaporative recovery of n-butyl acetate and ethyl acetate from aqueous media

Liu, Yanqing; Hu, Tingting; Zhao, Jin’an; Lu, Luoyi; Muhammad, Yaseen; Lan, Ping; He, Ruining; Zhang, Yun; Tong, Zhangfa

doi:10.1016/j.memsci.2019.117324

Cited by 29 publications

(19 citation statements)

References 64 publications

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“…Figure 11 shows the contact angles of KD‐PAN, PAN and water. The contact angle of material with water can reflect the hydrophilicity and hydrophobicity of the material 33,34 . The contact angle of PAN with water is 122° while that of KD‐PAN with water is 127°.…”

Section: Resultsmentioning

confidence: 99%

“…The contact angle of material with water can reflect the hydrophilicity and hydrophobicity of the material. 33,34 The contact angle of PAN with water is 122 while that of KD-PAN with water is 127 . This suggests increased hydrophobicity of the latter because the silicon hydroxyl group of KH570 reacts with the phenolic hydroxyl group on the surface of polydopamine, introducing oleophilic functional groups on the surface of PAN, which increases the contact angle of the KD-PAN with water.…”

Section: Interface Between Fiber and Sbs Modified Asphaltmentioning

confidence: 99%

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Performance of biomimetic coating modified fiber incorporated styrene butadiene styrene modified asphalt

Huang

et al. 2020

J of Applied Polymer Sci

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This study reports the effect of polydopamine bionic coating and γ-methacryloxypropyltrimethoxysilane (KH570) composite modified polyacrylonitrile (PAN) fiber as a secondary modifier on the performance of styrenebutadiene-styrene (SBS) modified asphalt. Dynamic shear rheometer test indicated the complex shear modulu, storage modulus, and loss modulus of modified PAN (KD-PAN) incorporated SBS modified asphalt was increased by 12.4, 20.5, and 11.2%, respectively compared with PAN/SBS modified asphalt. The master curve of G * of fiber/SBS composite modified asphalt shows that the deformation resistance of KD-PAN/SBS modified asphalt is greater than that of PAN/SBS modified asphalt in the entire loading frequency range. The cone penetration test showed significantly enhanced shear strength of KD-PAN/SBS modified asphalt. The adhesion work test results and SEM images of interface between fiber and SBS modified asphalt revealed that the adhesion effect of KD-PAN and SBS modified asphalt is better than that of PAN and SBS modified asphalt. SEM and AFM images of fiber further showed that the fiber surface becomes rough after modification. The increased surface

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Section: Resultsmentioning

confidence: 99%

Section: Interface Between Fiber and Sbs Modified Asphaltmentioning

confidence: 99%

Performance of biomimetic coating modified fiber incorporated styrene butadiene styrene modified asphalt

Huang

et al. 2020

J of Applied Polymer Sci

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“…In this context, pervaporation (PV) emerges as an energy‐efficient and eco‐friendly membrane separation process in a wide range of industrial operations including separation of azeotropes, recovery of organic solvents, and dehydration of many commodity chemicals 8–10 . Among all these processes, dehydration of organic solvents including EA through PV has gained much attention at commercial levels 11,12 .…”

Section: Introductionmentioning

confidence: 99%

A selective organosilica membrane for ethyl acetate dehydration by pervaporation

Raza

Yang

Wang

et al. 2021

J of Applied Polymer Sci

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Organosilica bis(triethoxysilyl) ethane (BTESE) membranes were explored for pervaporation dehydration of binary and ternary mixtures of ethyl acetate (EA) by undiluted sol coating combined with flash firing. Three BTESE membranes (M1, M2, and M3) were fabricated on macroporous supports by varying BTESE concentrations (0.5, 2.5, and 5 wt% BTESE, respectively) in polymer sols. The membranes were characterized by DLS, SEM, FTIR, XRD, contact angle, AFM, and pervaporation performance to discuss the effect of the BTESE contents in the polymer sol on the formation and dehydration performance of resulting organosilica membranes. It was found that 5 wt% loading of BTESE led to a highly selective membrane for dehydration of EA/H2O mixture. Among the synthesized membranes, M3 delivered flux of 0.84 ± 0.05 kg.m−2.h−1 with a selectivity of >10,000 for EA/H2O mixture (98/2 wt%) at 60°C. The time course of pervaporation dehydration for the EA/H2O mixture (95/5 wt%) confirms the stability of BTESE membrane in the investigated time period of 120 h. Further, the membrane exhibited excellent selectivity larger than 10,000 for separation of ternary mixtures (90/2/8 wt%) of ethyl acetate/ethanol/water and n‐propyl acetate/isopropanol/water respectively, the composition of which is similar to the top product of the distillation column used in the industrial esterification process. The best separation performance and excellent acid stability of BTESE membranes in this study suggest that the simple synthesis protocol of undiluted sol coating and flash firing will provide a cost‐effective, quick, and efficient synthesis route for practical membrane based applications.

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“…[15][16][17] Research on applying POSSbased composite materials to gas separation membranes, water treatment, catalyst systems, energy devices, and coating agents has been actively conducted. [18][19][20][21][22][23][24][25][26][27][28] The use of POSS as composite materials, such as nanocomposites and copolymers, improves the durability, thermostability, chemical resistance, and long-term stability, which are essential factors for alcohol separation and adsorption membranes for ethanol concentration and VOC separation. [16][17][18]23,[29][30][31][32][33] Silicon containing polymer membranes have reported to have high gas permeability.…”

Section: Introductionmentioning

confidence: 99%

“…Its compatibility and physical properties can be changed by introducing an arbitrary organic substituent 15–17 . Research on applying POSS‐based composite materials to gas separation membranes, water treatment, catalyst systems, energy devices, and coating agents has been actively conducted 18–28 . The use of POSS as composite materials, such as nanocomposites and copolymers, improves the durability, thermostability, chemical resistance, and long‐term stability, which are essential factors for alcohol separation and adsorption membranes for ethanol concentration and VOC separation 16–18,23,29–33 .…”

Section: Introductionmentioning

confidence: 99%

Temperature dependence of methanol and ethanol vapor sorption in polyhedral oligomeric silsesquioxane (POSS) containing methacrylate membranes

Moriizumi

Fukuda

Tanaka

et al. 2020

Journal of Polymer Science

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This study aimed to determine the solubility and temperature dependence of methanol and ethanol vapor caused by the difference in the substituents of polyhedral oligomeric silsesquioxane (POSS)‐containing polymethacrylate membranes and the spacer length between the backbone and POSS backbone. Vapor sorption of methanol and ethanol was measured at 25°C, 35°C, and 45°C for three kinds of POSS‐containing polymer membranes, namely, poly(methacryl isobutyl POSS), poly(methacrylate isobutyl POSS), and poly(methacryl phenyl POSS). The primary structures of the three POSS‐containing polymer chains were columnar. The solubility of alcohol vapor on the POSS‐containing polymer membranes followed the mechanism of solid adsorption and not the general dissolution diffusion. The sorption amount at all three temperatures was related to the surface area of the cylindrical primary structure and the solid adsorption property of the alcohol molecule of the POSS substituent. The sorption amount increased because of the large surface area and adsorption property of alcohol molecules. Although a typical glassy polymer shows exothermic mixing and a rubbery polymer displays endothermic mixing, the sample with the POSS substituent of isobutyl group exhibited an unusual behavior of endothermic mixing despite being a glassy polymer.

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Synthesis and application of PDMS/OP-POSS membrane for the pervaporative recovery of n-butyl acetate and ethyl acetate from aqueous media

Cited by 29 publications

References 64 publications

Performance of biomimetic coating modified fiber incorporated styrene butadiene styrene modified asphalt

Performance of biomimetic coating modified fiber incorporated styrene butadiene styrene modified asphalt

A selective organosilica membrane for ethyl acetate dehydration by pervaporation

Temperature dependence of methanol and ethanol vapor sorption in polyhedral oligomeric silsesquioxane (POSS) containing methacrylate membranes

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