Surface characterization of an organosilane-grafted moisture-crosslinked polyethylene compound treated by air atmospheric pressure non-equilibrium gliding arc plasma

Sarkari, Navid Mostofi; Darvish, Fahimeh; Mohseni, Mohsen; Ebrahimi, Morteza; Khani, Mohammad Reza; Eslami, Esmaeil; Shokri, Babak; Alizadeh, Mahdi; Dee, Chang Fu

doi:10.1016/j.apsusc.2019.06.007

Cited by 24 publications

(11 citation statements)

References 57 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…After plasma treatment, a layered structure with wrinkles was clearly observed on Ps-PGMA, indicating that the plasma subsequently produced conformal coatings on the surface of PGMA, which were in accordance with those reported by another study (Bu et al, 2019). The results suggest that the physical morphology and chemical groups were changed by plasma treatment (Mostofi Sarkari et al, 2019). After amination, the relatively higher amount of functional (mostly amino) groups of NH 2 -Ps-PGMA provided an appropriate size of the environment for co-immobilizing GOx/CAT, although the differences in images were not obvious after the amination process.…”

Section: Optimization Of Immobilization Conditions and Characterizationsupporting

confidence: 90%

Coupling and Regulation of Porous Carriers Using Plasma and Amination to Improve the Catalytic Performance of Glucose Oxidase and Catalase

Liao

Meng

Wang

et al. 2019

Front. Bioeng. Biotechnol.

View full text Add to dashboard Cite

Multiple enzyme systems are being increasingly used for their high-efficiency and co-immobilization is a key technology to lower the cost and improve the stability of enzymes. In this study, poly glycidyl methacrylate (PGMA) spheres were synthesized using suspension polymerization, and were used as a support to co-immobilize glucose oxidase (GOx) and catalase (CAT). Surface modification was carried out via a combination of plasma and amination to promote the properties of the catalyzer. The co-immobilized enzymes showed a more extensive range of optimum pH and temperature from 5.5 to 7.5 and 25 to 40 • C, respectively, compared to free enzymes. Furthermore, the maximum activity and protein adsorption quantity of the co-immobilized enzymes reached 25.98 U/g and 6.07 mg/g, respectively. The enzymatic activity of the co-immobilized enzymes was maintained at ∼70% after storage for 5 days and at 82% after three consecutive cycles, indicating that the immobilized material could be applied industrially.

show abstract

Section: Optimization Of Immobilization Conditions and Characterizationsupporting

confidence: 90%

Coupling and Regulation of Porous Carriers Using Plasma and Amination to Improve the Catalytic Performance of Glucose Oxidase and Catalase

Liao

Meng

Wang

et al. 2019

Front. Bioeng. Biotechnol.

View full text Add to dashboard Cite

show abstract

“…This peak indicates one of the C‐O groups breaks to form C‐OH bond with neighboring C atom. Si‐O‐Si bending vibration is attributed to the characteristic peak appears at 1200–1250 cm −1 only on the vulcanized sample and strongly refers stable siloxane bonds formed during hydrolysis prior to silane vulcanization 14,56,57 …”

Section: Resultsmentioning

confidence: 99%

Vulcanization of chlorinated polyethylene / chloroprene rubber compounds at lower temperatures in the presence of reactive silanes

Ünügül

Karaağaç

2021

J of Applied Polymer Sci

View full text Add to dashboard Cite

Vulcanization at lower temperatures can be considered as a good alternative to reduce both investment and operation costs for cable insulation sheat and special purpose hose production lines. In this study, silane vulcanization of chlorinated polyethylene and chloroprene rubber blends at lower temperature was investigated. Rubber compounds were prepared by using internal mixer instead of an extrusion system which is widespread used for projected applications. Rheological and dynamic properties of the rubber compounds were studied. After vulcanization, physico‐mechanical, thermal, morphological and temperature scanning stress‐relaxation properties were investigated before and after thermal aging. Structural analysis was performed by using Fourier transform infrared spectroscopy and X‐ray photoelectron spectroscopy so as to identify vulcanization reaction mechanism. All the compound compositions could be vulcanized at 110°C in the presence of water. Amino silane was found to be more effective than epoxy silane.

show abstract

“…In the FTIR for the pristine and coated membranes (Fig. 5; curve (a–f)), the 1056 cm −1 peak is ascribed to the SiO stretching of the silica from kaolin and sol–gel solution 42,43 . When compared to the pristine, a new absorption peak at 785 cm −1 in TCOS (curve e) and CTMS (curve f), and also at 2922 cm −1 in FAS (curve c) is detected as a result of stretching of alkyl halides groups (CCl and CF).…”

Section: Resultsmentioning

confidence: 99%

Impact of organosilanes modified superhydrophobic‐superoleophilic kaolin ceramic membrane on efficiency of oil recovery from produced water

Usman

Othman

Ismail

et al. 2020

J of Chemical Tech & Biotech

View full text Add to dashboard Cite

BACKGROUND: Novel hybrid absorption coupled with membrane filtration technology is proposed for the recovery of oil from produced water. This study aims at developing a low cost superhydrophobic-superoleophilic kaolin-based hollow fiber ceramic membrane using phase inversion and sintering technique for the recovery of oil from synthetic produced water. The influence of different organosialanes, such as methyltriethoxysilane (MTES), octadecyltrimethoxysilane (OTMS), 1H,1H,2H,2Hperfluorooctyltriethoxysilane (FAS), trichloro(octadecyl)silane, and chlorotrimethylsilane, was investigated for the modification process. RESULTS: Field emission scanning electron microscopy results clearly indicated that membrane morphology was altered with coating of the organosilanes. The surface functionality of the organosilanes on kaolin membranes was also confirmed by Xray photoelectron spectroscopy and Fourier-transform infrared spectroscopy. From the atomic force microscopy studies, membrane surface roughness was observed to be higher for MTES, FAS, and OTMS coated kaolin membranes. Contact analysis show that the membranes coated with MTES, FAS and OTMS organosilane agents possessed superhydrophobicity of 161.3°, 155.6°, and 150.2°as well as superoleophilicity of 0°, 1.5°, and 2.3°, respectively. CONCLUSION: Crude oil with a concentration of 2 g L −1 displayed a higher oil flux of 80 L m −2 h −1 and absorption of 90% for MTES coated kaolin membrane. This study extends the frontier of knowledge in ceramic membrane application for produced water treatment.

show abstract

Surface characterization of an organosilane-grafted moisture-crosslinked polyethylene compound treated by air atmospheric pressure non-equilibrium gliding arc plasma

Cited by 24 publications

References 57 publications

Coupling and Regulation of Porous Carriers Using Plasma and Amination to Improve the Catalytic Performance of Glucose Oxidase and Catalase

Coupling and Regulation of Porous Carriers Using Plasma and Amination to Improve the Catalytic Performance of Glucose Oxidase and Catalase

Vulcanization of chlorinated polyethylene / chloroprene rubber compounds at lower temperatures in the presence of reactive silanes

Impact of organosilanes modified superhydrophobic‐superoleophilic kaolin ceramic membrane on efficiency of oil recovery from produced water

Contact Info

Product

Resources

About