Hydrosilylation as an efficient tool for polymer synthesis and modification with methacrylates

Risangud, Nuttapol; Z, Li; Anastasaki, Athina; Wilson, Paul; Kempe, Kristian; Haddleton, David M.

doi:10.1039/c4ra14956d

Cited by 23 publications

(10 citation statements)

References 30 publications

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“…This reaction is well-known as Pt-catalyzed hydrosilylation. The hydrosilylation reaction has been used as a method of modifying silicone elastomers [31,32,33,34,35].…”

Section: Resultsmentioning

confidence: 99%

Facile Functionalization of Poly(Dimethylsiloxane) Elastomer by Varying Content of Hydridosilyl Groups in a Crosslinker

Park

Choi

et al. 2019

Polymers

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Crosslinked poly(dimethylsiloxane) (PDMS) has been widely used as a dielectric elastomer for electrically driven actuators because it exhibits high elasticity, low initial modulus, and excellent moldability in spite of low dielectric constant. However, further improvement in the characteristics of the PDMS elastomer is not easy due to its chemical non-reactivity. Here, we report a simple method for functionalizing the elastomer by varying content of hydridosilyl groups in PDMS acted as a crosslinker. We synthesized poly(dimethylsiloxane-co-methylvinylsiloxane) (VPDMS) and poly(dimethylsiloxane-co-methylsiloxane) (HPDMS). Tri(ethylene glycol) divinyl ether (TEGDE) as a polar molecule was added to the mixture of VPDMS and HPDMS. TEGDE was reacted to the hydridosilyl group in HPDMS during crosslinking between VPDMS and HPDMS in the presence of platinum as a catalyst. Permittivity of the crosslinked film increased from ca. 25 to 36 pF/m at 10 kHz without a decline in other physical properties such as transparency and elasticity (T > 85%, E ~150 kPa, ɛ ~270%). It depends on the hydridosilyl group content of HPDMS. The chemical introduction of a new molecule into the hydridosilyl group in HPDMS during crosslinking would provide a facile, effective method of modifying the PDMS elastomers.

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“…This reaction is well-known as Pt-catalyzed hydrosilylation. The hydrosilylation reaction has been used as a method of modifying silicone elastomers [31,32,33,34,35].…”

Section: Resultsmentioning

confidence: 99%

Facile Functionalization of Poly(Dimethylsiloxane) Elastomer by Varying Content of Hydridosilyl Groups in a Crosslinker

Park

Choi

et al. 2019

Polymers

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“…The characteristic Si-H peak at 2126 cm − 1 decreased following the hydrosilylation reaction. Distinct peaks for the carbonyl ester bond appeared at 1750 cm − 1 , resulting from the reaction with methacrylate [41]. This indicates that the hydrosilylation reaction had su ciently progressed within 2 h. In addition, the functionalized PDMS polymers were thermally stable up to approximately 300°C without signi cant weight loss (see Fig.…”

Section: Synthesis Of Functionalized Polydimethylsiloxanementioning

confidence: 95%

“…Functionalized polydimethylsiloxane was synthesized by Pt-catalyzed hydrosilylation according to a procedure in the literature [41]. Poly(methylhydrosiloxane) (3 g), TFOMA (1.5 g), TMSPMA (1.5 g), and GMA (1.5 g) were vigorously mixed in a glass vial, and two drops of Pt(dvs) were added to initiate the reaction.…”

Section: Synthesis Of Functionalized Polydimethylsiloxane Through Hyd...mentioning

confidence: 99%

Thermally Stable, Semi-transparent Superhydrophobic Nanocomposites with Excellent Mechanical Strengths

Lim

Park

Kim

et al. 2022

Preprint

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With the development of smart electronic devices, the importance of surface-protective coatings is rapidly increasing. Superhydrophobic nanocomposite materials are promising protective coatings that exhibit potential for anti-wetting, self-cleaning, and antibacterial applications. However, their poor mechanical durability makes their practical application difficult. Additionally, rough surface geometries induce incident light scattering, thereby reducing the transparency and limiting their optical applications. This study describes semi-transparent superhydrophobic nanocomposites coatings with improved mechanical strength and thermal stability obtained through simple spray coating. We mixed reactive polydimethylsiloxane (PDMS) as a binder with low surface free energy and high thermal resistance with fluorinated silica nanoparticles. PDMS polymers were functionalized to improve their hydrophobicity and adhesion properties through hydrosilylation with acrylate monomers. As a result, our superhydrophobic coatings had a high-water repellency of above 160° and transparency of approximately 60% at a wavelength of 550 nm. The coated surfaces exhibited an outstanding pencil hardness of 5H and sufficient clarity to identify objects through them. After heat treatment at 400°C, the hardness increased to 6H while maintaining superhydrophobicity. Additionally, various contaminants were easily removed with water spraying. Our semi-transparent superhydrophobic nanocomposite materials can be widely applied in hard coatings for mobile displays, solar cell panels, self-cleaning paint, and outdoor facilities.

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“…Networks. The obtained materials 9-12 can be described as a polymeric network consisting on cross-linked chains having nodes originated from the hydrosilylation reaction [20][21][22] of the vinyl end with the hydrosilane end of the corresponding PDMS precursor (1) between which linear chains of PEO derivatives 4-7 are interpenetrated as schematically illustrated in Figure 2(a). [23][24][25].…”

Section: -Preparation Of Novel Solid Adsorbent Phases Based On Pdmsmentioning

confidence: 99%

Novel PDMS based semi-interpenetrating networks (IPNs) for the extraction of phenolic compounds

Abdelhadi-Miladi

Chabbah

Chatti³

et al. 2021

Journal of Environmental Chemical Engineering

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Four Semi-Interpenetrating Networks (semi-IPN) based on polydimethylsiloxane (PDMS) were developed for the sorptive extraction of polar phenolic compounds (log Kow ≤ 3). Their preparation is based on the hydrosilylation crosslinking reaction of dihydrosilane terminated polydimethylsiloxane with its homologue divinyl, followed by the addition of inert various polyethylene oxide derivatives (PEO). The physico-chemical properties of the semi-IPN were controlled by Differential Scanning Calorimetry (DSC), Scanning Electronic Microscopy (SEM), RAMAN spectroscopy and contact angle measurements, showing the homogeneity of the semi-IPN and their higher hydrophilicity. Under optimum extraction conditions of phenolic molecules as target analytes and using liquid chromatography as analysis techniques, the novel modified PDMS phases showed good extraction rate against polar analytes with an excellent relative recovery average (69-100%) for phenolic molecules. The higher retention rates were obtained with 30% interpenetrated copolymer PEO/PPO in PDMS. Moreover, five adsorption/desorption cycles led to a loss of 5.8 % of the adsorption efficiency, showing a good stability of these PDMS-based IPN phases.

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Hydrosilylation as an efficient tool for polymer synthesis and modification with methacrylates

Abstract: Hydrosilylation is a well-established reaction for the preparation of organo-silicon compounds, in which vinyl groups react with silanes (Si–H) usually catalysed by late transition metal complexes, most often Pt(ii) complexes.

Cited by 23 publications

References 30 publications

Facile Functionalization of Poly(Dimethylsiloxane) Elastomer by Varying Content of Hydridosilyl Groups in a Crosslinker

Facile Functionalization of Poly(Dimethylsiloxane) Elastomer by Varying Content of Hydridosilyl Groups in a Crosslinker

Thermally Stable, Semi-transparent Superhydrophobic Nanocomposites with Excellent Mechanical Strengths

Novel PDMS based semi-interpenetrating networks (IPNs) for the extraction of phenolic compounds

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