A facile method to modify polypropylene membrane by polydopamine coating via inkjet printing technique for superior performance

Li, Renjie; Liu, Jinxia; Shi, An; Luo, Xiaoqian; Lin, Jincong; Ran, Zhi Hua; Fan, Hangxu; Selasie, Semekor Vincent; Lin, Hongjun

doi:10.1016/j.jcis.2019.05.108

Cited by 41 publications

(7 citation statements)

References 70 publications

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“…Li et al investigated the inkjet printing to print DA and sodium periodate (SP) to deposit PDA onto a UF polypropylene (PP) membrane. Compared with the pristine PP membrane and only DA coated membrane, the PDA printed membrane exhibited higher water permeability and enhanced anti-fouling performance due to improvement of PDA oxidation degree [22].…”

Section: Introductionmentioning

confidence: 98%

Inkjet printing of graphene oxide and dopamine on nanofiltration membranes for improved anti-fouling properties and chlorine resistance

Wang

Park

Seo

et al. 2021

Separation and Purification Technology

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Section: Introductionmentioning

confidence: 98%

Inkjet printing of graphene oxide and dopamine on nanofiltration membranes for improved anti-fouling properties and chlorine resistance

Wang

Park

Seo

et al. 2021

Separation and Purification Technology

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“…Among the MSM techniques, the mussel-inspired method (MI) has gained interest [ 25 , 26 , 27 , 28 , 29 , 30 , 31 , 32 , 33 , 34 , 35 ]. Based on the adhesive capacity of mussels, Lee, Dellatore, Miller, and Messersmith (2007) [ 36 ] proposed the immersion of material in a solution of dopamine (DA), with slightly alkaline pH and in the presence of oxygen (conditions for DA polymerization), to form a thin adhesive polymeric layer on the surface, known as polydopamine (PDA).…”

Section: Introductionmentioning

confidence: 99%

Impact of MWCO and Dopamine/Polyethyleneimine Concentrations on Surface Properties and Filtration Performance of Modified Membranes

et al. 2020

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The mussel-inspired method has been investigated to modify commercial ultrafiltration membranes to induce antifouling characteristics. Such features are essential to improve the feasibility of using membrane processes in protein recovery from waste streams, wastewater treatment, and reuse. However, some issues still need to be clarified, such as the influence of membrane pore size and the polymer concentration used in modifying the solution. The aim of the present work is to study a one-step deposition of dopamine (DA) and polyethyleneimine (PEI) on ultrafiltration membrane surfaces. The effects of different membrane molecular weight cut-offs (MWCO, 20, 30, and 50 kDa) and DA/PEI concentrations on membrane performance were assessed by surface characterization (FTIR, AFM, zeta potential, contact angle, protein adsorption) and permeation of protein solution. Results indicate that larger MWCO membranes (50 kDa) are most benefited by modification using DA and PEI. Moreover, PEI is primarily responsible for improving membrane performance in protein solution filtration. The membrane modified with 0.5:4.0 mg mL−1 (DA: PEI) presented a better performance in protein solution filtration, with only 15% of permeate flux drop after 2 h of filtration. The modified membrane can thus be potentially applied to the recovery of proteins from waste streams.

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“…The present study achieved significantly improved surface hydrophilicity by PDA coating (WCA from 92.7° to 52.5°). Previous studies have pointed out that the PDA contains many hydrophilic functional groups, such as amino groups, which enhance surface wettability by promoting hydrogen bonding ( Li et al, 2019 ). More interestingly, after immobilizing nHA on the PLA@PDA surface, the water droplet was absorbed instantly after it touched the surface, demonstrating that the nHA coating could further turn its surface into a superhydrophilic surface (WCA = 0°).…”

Section: Discussionmentioning

confidence: 99%

Biomimetic, mussel-inspired surface modification of 3D-printed biodegradable polylactic acid scaffolds with nano-hydroxyapatite for bone tissue engineering

Chi

Cui

et al. 2022

Front. Bioeng. Biotechnol.

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Polylactic acid (PLA) has been widely used as filaments for material extrusion additive manufacturing (AM) to develop patient-specific scaffolds in bone tissue engineering. Hydroxyapatite (HA), a major component of natural bone, has been extensively recognized as an osteoconductive biomolecule. Here, inspired by the mussel-adhesive phenomenon, in this study, polydopamine (PDA) coating was applied to the surface of 3D printed PLA scaffolds (PLA@PDA), acting as a versatile adhesive platform for immobilizing HA nanoparticles (nHA). Comprehensive analyses were performed to understand the physicochemical properties of the 3D-printed PLA scaffold functionalized with nHA and PDA for their potent clinical application as a bone regenerative substitute. Scanning electron microscopy (SEM) and element dispersive X-ray (EDX) confirmed a successful loading of nHA particles on the surface of PLA@PDA after 3 and 7 days of coating (PLA@PDA-HA3 and PLA@PDA-HA7), while the surface micromorphology and porosity remain unchanged after surface modification. The thermogravimetric analysis (TGA) showed that 7.7 % and 12.3% mass ratio of nHA were loaded on the PLA scaffold surface, respectively. The wettability test indicated that the hydrophilicity of nHA-coated scaffolds was greatly enhanced, while the mechanical properties remained uncompromised. The 3D laser scanning confocal microscope (3DLS) images revealed that the surface roughness was significantly increased, reaching Sa (arithmetic mean height) of 0.402 μm in PLA@PDA-HA7. Twenty-eight days of in-vitro degradation results showed that the introduction of nHA to the PLA surface enhances its degradation properties, as evidenced by the SEM images and weight loss test. Furthermore, a sustainable release of Ca2+ from PLA@PDA-HA3 and PLA@PDA-HA7 was recorded, during the degradation process. In contrast, the released hydroxyl group of nHA tends to neutralize the local acidic environments, which was more conducive to osteoblastic differentiation and extracellular mineralization. Taken together, this facile surface modification provides 3D printed PLA scaffolds with effective bone regenerative properties by depositing Ca2+ contents, improving surface hydrophilicity, and enhancing the in-vitro degradation rate.

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A facile method to modify polypropylene membrane by polydopamine coating via inkjet printing technique for superior performance

Cited by 41 publications

References 70 publications

Inkjet printing of graphene oxide and dopamine on nanofiltration membranes for improved anti-fouling properties and chlorine resistance

Inkjet printing of graphene oxide and dopamine on nanofiltration membranes for improved anti-fouling properties and chlorine resistance

Impact of MWCO and Dopamine/Polyethyleneimine Concentrations on Surface Properties and Filtration Performance of Modified Membranes

Biomimetic, mussel-inspired surface modification of 3D-printed biodegradable polylactic acid scaffolds with nano-hydroxyapatite for bone tissue engineering

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