Mussel-inspired modification of PTFE membranes in a miscible THF-Tris buffer mixture for oil-in-water emulsions separation

Li, Xipeng; Shan, Huiting; Cao, Min; Li, Bao-An

doi:10.1016/j.memsci.2018.03.010

Cited by 88 publications

(22 citation statements)

References 60 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Upon addition of SP, the absorption peak at around 480 nm was observed within a few minutes, which might be caused by the intramolecular cyclization of dopamine quinone to dopaminochrome. 21,22 With the extension of reaction time, its intensity increased rapidly and the color of the DA/SP solution darkened dramatically to deep black within 30 min ( Fig. 2a).…”

Section: Resultsmentioning

confidence: 99%

Melanin-mimetic multicolor and low-toxicity hair dye

et al. 2019

View full text Add to dashboard Cite

show abstract

Section: Resultsmentioning

confidence: 99%

Melanin-mimetic multicolor and low-toxicity hair dye

et al. 2019

View full text Add to dashboard Cite

show abstract

“…In addition, polydopamine also had C=C resonance vibration at 1615 cm −1 , N-H bending vibration at 1520 cm −1 and C-N stretching vibration at 1437 cm −1 , but this was not unique to polydopamine. PPTA fibers also had absorption peaks at these positions, so the absorption peak of polydopamine at these positions was overlapped [40]. Therefore, it is concluded that plasma treatment has no effect on the chemical structure of PPTA fibers, the modification of PPTA fibers by using dopamine is successful.…”

Section: Oxygen Plasma Treatment and Dopamine Functionalizationmentioning

confidence: 96%

Preparation of Silver-Plated Para-Aramid Fiber by Employing Low-Temperature Oxygen Plasma Treatment and Dopamine Functionalization

Sun

Zhou

et al. 2019

Coatings

View full text Add to dashboard Cite

Direct electroless silver plating of para-aramid (PPTA) is difficult due to its extremely low surface chemical energy. In order to facilitate the deposition of silver nanoparticles and to enhance the washing fastness, oxygen plasma treatment and dopamine modification were conducted before silver plating of PPTA fibers. Various techniques including scanning electron microscopy (SEM), attenuated total reflection Fourier transform infrared spectroscopy (ATR-FTIR), X-ray diffractometer (XRD) and thermogravimetric analyzer (TGA) were used to characterize the surface morphology, chemical composition and thermal stability of the silver-plated PPTA fibers. Electrical resistance and silver content of the silver-coated PPTA fibers before and after standard washing were also studied. The results showed that silver nanoparticles were successfully coated onto the surface of PPTA fibers with and without plasma treatment, but the coating continuity and the electrical conductivity of the silver-coated PPTA fibers were greatly enhanced with the assistance of plasma treatment. It was also demonstrated that the washing fastness of silver-coated PPTA fibers was improved after plasma treatment as indicated by electrical resistance and continuity of the silver nanoparticles after various washing cycles. It was found that the electrical resistance of plasma-treated PPTA-PDA/Ag fibers prepared at an AgNO3 concentration of 20 g/L reached 0.89 Ω/cm and increased slightly to 0.94 Ω/cm after 10 standard washing cycles. The silver-coated PPTA fibers also showed stable electrical conductivity under 250 repeated stretching-releasing cycles at a strain of 3%.

show abstract

“…However, sample shapes and the high cost impeded their further applications [11]. Recently, a simple, versatile, and environmental friendly surface modification method based on dopamine has been widely used in the hydrophilic modification of various materials, such as polyvinylidene fluoride [12], PTFE membrane [13], polylactide [14], and so on. Dopamine is a main component of adhesive proteins in mussel and is able to form polydopamine (PDA) coatings on various material surfaces by oxidative polymerization [15][16][17].…”

Section: Introductionmentioning

confidence: 99%

Surface hydrophilizing modification of polytetrafluoroethylene/glass fiber fabric through oxidant-induced polydopamine deposition

Zhou

Jiang

et al. 2019

Journal of Industrial Textiles

View full text Add to dashboard Cite

This paper reports surface hydrophilizing modification of polytetrafluoroethylene/glass fiber fabric by employing bio-inspired polydopamine functionalization. The modification process was accelerated by introducing sodium periodate (NaIO4) as oxidant. Surface morphology and chemical composition of the modified polytetrafluoroethylene/glass fiber fabric were characterized by using scanning electron microscopy, atomic force microscopy (AFM), and Fourier transform infrared spectroscopy, respectively. Hydrophilicity of the polytetrafluoroethylene/glass fiber fabric was investigated through water contact angle measurement. It was found that polydopamine successfully deposited on the surface of polytetrafluoroethylene/glass fiber fabric and the uniformity of the polydopamine coating increased with increasing modification time. Water contact angle of polytetrafluoroethylene/glass fiber fabric decreased after polydopamine modification and reached 29° when the sample was treated for 120 min, indicating an improved hydrophilic performance. The formed polydopamine coating was also demonstrated to have reliable chemical and mechanical stability.

show abstract

Mussel-inspired modification of PTFE membranes in a miscible THF-Tris buffer mixture for oil-in-water emulsions separation

Cited by 88 publications

References 60 publications

Melanin-mimetic multicolor and low-toxicity hair dye

Melanin-mimetic multicolor and low-toxicity hair dye

Preparation of Silver-Plated Para-Aramid Fiber by Employing Low-Temperature Oxygen Plasma Treatment and Dopamine Functionalization

Surface hydrophilizing modification of polytetrafluoroethylene/glass fiber fabric through oxidant-induced polydopamine deposition

Contact Info

Product

Resources

About