A comprehensive review on synthesis, characterization, and applications of polydimethylsiloxane and copolymers

Zaman, Qaiser; Zia, Khalid Mahmood; Zuber, Mohammad; Mabkhot, Yahia N.; Almalki, Faisal A.; Hadda, Taïbi Ben

doi:10.1007/s12588-019-09259-y

Cited by 24 publications

(13 citation statements)

References 67 publications

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“…This polymer has been widely used in industry as a lubricant, antifoaming agent, and resin for soft lithography. In addition, it can be applied to improve the properties of other compounds [1][2][3].…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Hydrophilicity Analysis of bis(propane-1,2-diol) Terminated Polydimethylsiloxanes (PDMSs)

2022

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Among silicone oligomers, polydimethylsiloxane (PDMS) is widely used industrially and has the advantage of improving the properties of other compounds, such as flame-retardant polyurethane (PU). However, as there are barriers to the synthesis of PU-grafted siloxane, owing to the polarity difference between isocyanate and PDMS, numerous research efforts are being aimed at improving the hydrophilicity of PDMS. To improve the hydrophilicity and reactivity of hydroxyl PDMS, bis(propane-1,2-diol)-terminated PDMS (G-PDMS-G) with four hydroxy (-OH) groups was synthesized through ring-opening addition to replace both ends of linear α,ω-hydroxyl PDMS (HO-PDMS-OH) with glycidol, resulting in hydrophilic PDMS rather than dihydroxy PDMS. In all cases of G-PDMS-G, the contact angle and viscosity both decreased by more than 20%, confirming the improved hydrophilicity. In particular, G-PDMS-G-3, which has the largest molecular weight, demonstrated the greatest decrease in viscosity and contact angle (33%).

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Section: Introductionmentioning

confidence: 99%

Synthesis and Hydrophilicity Analysis of bis(propane-1,2-diol) Terminated Polydimethylsiloxanes (PDMSs)

2022

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Section: Introductionmentioning

confidence: 99%

“…Some of that silicon is then harvested by organisms like diatoms and sponges to yield intricately beautiful hierarchical structures in a process called biosilicification. , Silicon is also at the heart of the computer revolution, as the core material in the manufacture of semiconductor chips . Organosilicon molecules (e.g., dichlorodimethylsilane) are used as precursors in the synthesis of silicone rubbers and polymers, including the widely used polydimethylsiloxane . As a final example, of more direct relevance to our research, organosilicon compounds like tetraethoxysilane are key precursor species in the synthesis of porous materials like zeolites, , periodic mesoporous silicas, , organosilicas, , and bioinspired silica. , …”

Section: Introductionmentioning

confidence: 99%

“…4 Organosilicon molecules (e.g., dichlorodimethylsilane) are used as precursors in the synthesis of silicone rubbers and polymers, including the widely used polydimethylsiloxane. 5 As a final example, of more direct relevance to our research, organosilicon compounds like tetraethoxysilane are key precursor species in the synthesis of porous materials like zeolites, 6,7 periodic mesoporous silicas, 8,9 organosilicas, 10,11 and bioinspired silica. 3,12 Understanding, controlling, and optimizing many of the above processes and applications relies on obtaining molecularlevel insight on how silicon-containing molecules interact with each other and/or with other compounds in a liquid or solution environmentfor example, biosilicification, porous silica synthesis, and silicone rubber polymerization all take place in solution.…”

Section: Introductionmentioning

confidence: 99%

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New Force-Field for Organosilicon Molecules in the Liquid Phase

et al. 2021

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In this paper, we present a new molecular model that can accurately predict thermodynamic liquid state and phase-change properties for organosilicon molecules including several functional groups (alkylsilane, alkoxysilane, siloxane, and silanol). These molecules are of great importance in geological processes, biological systems, and material science, yet no force field currently exists that is widely applicable to organosilicates. The model is parametrized according to the recent Polarization-Consistent Approach (PolCA), which allows for polarization effects to be incorporated into a nonpolarizable model through post facto correction terms and is therefore consistent with previous parametrizations of the PolCA force field. Alkyl groups are described by the United-Atom approach, bond and angle parameters were taken from previous literature studies, dihedral parameters were fitted to new quantum chemical energy profiles, point charges were calculated from quantum chemical optimizations in a continuum solvent, and Lennard-Jones dispersion/repulsion parameters were fitted to match the density and enthalpy of vaporization of a small number of selected compounds. Extensive validation efforts were carried out, after careful collection and curation of experimental data for organosilicates. Overall, the model performed quite well for the density, enthalpy of vaporization, dielectric constant, and self-diffusion coefficient, but it slightly overestimated the magnitude of self-solvation free energies. The modular and transferable nature of the PolCA force field allows for further extensions to other types of silicon-containing compounds.

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“…They consist of an alternating silicon-oxygen backbone chain and functional side groups. Being structured this way, they show a number of valuable properties depending on the size of molecules, which distinguish them from organic materials [ 12 , 13 ].…”

Section: Introductionmentioning

confidence: 99%

Viscosity Approximation of PDMS Using Weibull Function

2021

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The viscosity of a fluid is one of its basic physico-chemical properties. The modelling of this property as a function of temperature has been the subject of intensive studies. The knowledge of how viscosity and temperature variation are related is particularly important for applications that use the intrinsic friction of fluids to dissipate energy, for example viscous torsional vibration dampers using high viscosity poly(dimethylsiloxane) as a damping factor. This article presents a new method for approximating the dynamic viscosity of poly(dimethylsiloxane). It is based on the three-parameter Weibull function that far better reflects the relationship between viscosity and temperature compared with the models used so far. Accurate mapping of dynamic viscosity is vitally important from the point of view of the construction of viscous dampers, as it allows for accurate estimation of their efficiency in the energy dissipation process.

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A comprehensive review on synthesis, characterization, and applications of polydimethylsiloxane and copolymers

Cited by 24 publications

References 67 publications

Synthesis and Hydrophilicity Analysis of bis(propane-1,2-diol) Terminated Polydimethylsiloxanes (PDMSs)

Synthesis and Hydrophilicity Analysis of bis(propane-1,2-diol) Terminated Polydimethylsiloxanes (PDMSs)

New Force-Field for Organosilicon Molecules in the Liquid Phase

Viscosity Approximation of PDMS Using Weibull Function

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