Synthesis of star-shaped polyhedral oligomeric silsesquioxane (POSS) fluorinated acrylates for hydrophobic honeycomb porous film application

Qiang, Xiu; Ma, Xiaoyan; Li, Chi Kong; Hou, Xian-Bing

doi:10.1007/s00396-013-3157-9

Cited by 28 publications

(18 citation statements)

References 40 publications

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“…2c). Figure 2a shows the four main stretching vibration at 1086 cm 21 (SiAOASi), 752 cm 21 (CACl), 2940 cm 21 (CAH), and 538 cm 21 (OASiAO), which asserts the formation of Cl-POSS [56]. From Fig.…”

Section: Ftir and Nmrmentioning

confidence: 89%

Octa‐imidazolium POSS/quaternized polysulfone composite anion exchange membrane for alkaline fuel cell

Elumalai

Dharmalingam

2018

Polymer Composites

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In the present study, a series of new anion exchange composite membranes were fabricated from pre‐synthesized imidazolium grafted polyhedral oligomeric silsesquioxane (IM‐POSS) with quaternary polysulfone (QPSU). Synthesized IM‐POSS were acutely characterized by Fourier‐transform infrared, NMR, scanning electron microscopy (SEM), and transmission electron microscopy (TEM) investigations to confirm the chemical structure and cubic morphologies. The IM‐POSS nanoparticles have binary function in the anion exchange membrane by providing more additional ion conducting groups (imidazolium) and by reinforcing the membrane in molecular level for overall improvement of composite membranes. The prepared composite membranes with various compositions of the IM‐POSS/QPSU were characterized by X‐ray diffraction, SEM, ion exchange capacity, water uptake (Wup), and conductivity to assure the appropriateness of their use as a solid alkaline electrolyte in anion exchange membrane fuel cell. The membrane electrode assembly was constructed using Pt anode (0.25 mg/cm2), Ag cathode (0.375 mg/cm2), and various IM‐POSS/QPSU composite membranes, which was tested in an in‐house built fuel cell setup. The membrane with 15% IM‐POSS showed the maximum power density of 309 mW/cm2. The results showed that the addition of IM‐POSS is a straight forward and effectual method to enhance the hydroxide conductivity without sacrificing other properties of the membrane. POLYM. COMPOS., 40:1536–1544, 2019. © 2018 Society of Plastics Engineers

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Section: Ftir and Nmrmentioning

confidence: 89%

Octa‐imidazolium POSS/quaternized polysulfone composite anion exchange membrane for alkaline fuel cell

Elumalai

Dharmalingam

2018

Polymer Composites

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“…In the past decades, POSS-incorporated polymer materials have attracted increasing interest due to the using in the construction of the multifunctional nanohybrids and nanocomposites with tunable hierarchical structures and unparalleled properties [34][35][36]. Several different POSS fluorinated acrylates were synthesized and applied for hydrophobic honeycomb-patterned porous films through the breath figure (BF) method [37,38]. It has been proved that the addition of POSS was propitious to from the honeycomb structures during the BF process.…”

Section: Introductionmentioning

confidence: 99%

Facile Fabrication of Superhydrophobic Surface from Fluorinated POSS Acrylate Copolymer via One-Step Breath Figure Method and Its Anti-Corrosion Property

et al. 2019

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Novel fluorinated polyhedral oligomeric silsesquioxane (POSS) acrylic copolymers were synthesized by the radical solution polymerization. The superhydrophobic coating was prepared using a one-step breath figure method. Chemical constitution, morphology, hydrophobicity, and anticorrosion ability of as-prepared coatings were investigated by the corresponding equipment. The addition of proper fluorinated POSS can synchronously promote the formation of the micro-nano convex structure and the enrichment of fluorinated groups on the surface. Compared to commercial acrylic coating, the fluorinated POSS coating presented enhanced anticorrosion performance. The impedance was the highest and the corrosion current density was the lowest for superhydrophobic coating with 25 wt % fluorinated POSS.

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“…Subsequently, a variety of POSS-based small molecules or polymers were synthesized and the different self-assembly behavior was achieved as well [8][9][10][11][12]. Wamke et al [13] successfully synthesized two open-cage TSiO-POSS and DSiB-POSS with short alkyl chains and compared the interfacial property of Langmuir monolayer.…”

Section: Introductionmentioning

confidence: 99%

“…Chen et al [35] found that the aggregation behavior of X-shaped block copolymers at air/water interface can be changed by the variation of the block sequence or temperature. Fluorinated copolymers, especially the fluorinated acrylate copolymers, are excellent choice for design weakly amphiphilic diblock copolymers due to hydrophobicity and high surface activity at air/water interface [8,[36][37][38][39][40][41]. Zhu et al [42] examined the formation of various PVDF Langmuir films.…”

Section: Introductionmentioning

confidence: 99%

Tadpole-Shaped POSS-Based Copolymers and the Aggregation Behavior at Air/Water Interface

Zhu

Chen

et al. 2018

Advances in Condensed Matter Physics

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The aggregation behavior of three tadpole-shaped Polyhedral oligomeric silsesquioxane (POSS) based block copolymers using different blocks poly(methyl methacrylate) (PMMA) and poly(trifluoroethyl methacrylate) (PTFEMA) with different block sequence and ratio (POSS-PTFEMA 161 -b-PMMA 236 , POSS-PMMA 277 -b-PTFEMA 130 , and POSS-PMMA 466 -b-PTFEMA 172 ) was investigated on the air-water interface. The interfacial rheology of three block copolymers was studied by surface pressure isotherm, compression modulus measurements, and compression and expansion hysteresis analysis on the Langmuir trough. The block sequence and ratio play a great role in self-assembly behavior at the interface. Based on surface pressure isotherm analysis, a thin film with low elasticity was achieved for the POSS-PTFEMA 161 -b-PMMA 236 . Moreover, for the block copolymer with same segment sequence (POSS-PMMA 2 -b-PTFEMA), the thin film compression capability is increased with increasing the PMMA ratio. The morphology of the deposited LB thin film was illustrated by atomic force microscopy (AFM) and X-ray photoelectron spectroscopy (XPS). We observed that a thin film was composed by crater-shaped quasi-2D micelles for POSS-PTFEMA-b-PMMA, while it was proved that only flaky texture was observed for both POSS-PMMA 277 -b-PTFEMA 130 and POSS-PMMA 466 -b-PTFEMA 172 . The thickness and area of flaky aggregates were greatly related to PMMA ratio. The different interface self-assembly structure evolution was proposed based on the interfacial rheology and thin film morphology studies.

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Synthesis of star-shaped polyhedral oligomeric silsesquioxane (POSS) fluorinated acrylates for hydrophobic honeycomb porous film application

Cited by 28 publications

References 40 publications

Octa‐imidazolium POSS/quaternized polysulfone composite anion exchange membrane for alkaline fuel cell

Octa‐imidazolium POSS/quaternized polysulfone composite anion exchange membrane for alkaline fuel cell

Facile Fabrication of Superhydrophobic Surface from Fluorinated POSS Acrylate Copolymer via One-Step Breath Figure Method and Its Anti-Corrosion Property

Tadpole-Shaped POSS-Based Copolymers and the Aggregation Behavior at Air/Water Interface

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