Influence of Type of Cross-Linking Agent on Structure and Transport Properties of Polydecylmethylsiloxane
Abstract
:1. Introduction
2. Materials and Methods
2.1. Materials
2.2. Synthesis Procedure
2.3. Study of the Physicochemical Properties of the Polymer
2.4. Study of the Gas Transport Properties of Polymer Film
3. Results and Discussion
3.1. Structure and Physico-Chemical Properties of Cross-Linked Polydecylmethylsiloxanes (C10)
3.1.1. IR-Spectroscopy
3.1.2. Differential Scanning Calorimetry (DSC)
3.1.3. Wide Angle X-ray Scattering (WAXS)
3.1.4. Cross-Linking Density
3.2. Gas Transport Properties of Cross-Linked Polydecylmethylsiloxanes
4. Conclusions
Author Contributions
Funding
Institutional Review Board Statement
Data Availability Statement
Acknowledgments
Conflicts of Interest
References
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Membrane Abbreviation | Cross-Linking Agent (CA) | Ratio 1-Decene/CA, mol/mol |
---|---|---|
C10-OD | 1,7-octadiene | 20 |
C10-DD | 1,9-decadiene | 20 |
C10-DdD | 1,11-dodecadiene | 20 |
C10-Sil500 | PDMS (Mn = 500 g/mol) | 15 |
C10-Sil25-OD | PDMS (Mn = 25,000 g/mol) 1,7-octadiene | 15 |
Membrane Abbreviation | Tm, °C | ΔH, J·g−1 |
---|---|---|
C10-OD | −39.2 | −26.7 |
C10-DD | −41.5 | −20.9 |
C10-DdD | −40.9 | −22.8 |
C10-Sil500 | −43.3 | −22.0 |
C10-Sil25-OD | −38.9 1 −44.0 2 | −28.6 |
Membrane Abbreviation | d1, Å | d2, Å | d3, Å | dm, Å | Crystallinity Degree of Side-Chain Substituents (α), % |
---|---|---|---|---|---|
C10-OD | 16.2 | 8.0 | 5.6 | 4.1 | 5.7 |
C10-DD | 14.7 | 7.7 | - | 4.1 | 6.2 |
C10-DdD | 18.1 | 8.6 | 7.0 | 4.1 | 6.9 |
C10-Sil500 | - | 9.7 | 6.1 | 4.0 | 7.1 |
C10-Sil25-OD | - | 7.1 | - | 4.1 | 7.6 |
Membrane Abbreviation | Sorption, g/g | Swelling, cm3/cm3 | Density, g/cm3 | Apparent Cross-Linking Density, 10−4 mol/g |
---|---|---|---|---|
C10-OD | 0.862 ± 0.009 | 0.928 ± 0.020 | 0.985 ± 0.096 | 3.14 ± 0.06 |
C10-DD | 1.221 ± 0.007 | 1.382 ± 0.016 | 0.966 ± 0.097 | 2.44 ± 0.06 |
C10-DdD | 1.262 ± 0.006 | 1.490 ± 0.024 | 0.928 ± 0.093 | 2.35 ± 0.17 |
C10-Sil500 | 2.749 ± 0.009 | 2.892 ± 0.018 | 0.929 ± 0.093 | 1.49 ± 0.09 |
C10-Sil25-OD | 2.577 ± 0.007 | 2.461 ± 0.029 | 0.922 ± 0.092 | 1.79 ± 0.04 |
C10-Sil25 * | 3.752 ± 0.005 | 3.287 ± 0.031 | 0.929 ± 0.093 | 1.38 ± 0.02 |
Membrane | Diffusion Coefficient, 10−8 cm2/s | Diffusion Selectivity (X/N2) | |||||
---|---|---|---|---|---|---|---|
N2 | CH4 | C2H6 | C4H10 | CH4 | C2H6 | C4H10 | |
C10-OD | 520 ± 26 | 490 ± 25 | 260 ± 13 | 160 ± 8 | 1.0 ± 0.10 | 0.5 ± 0.05 | 0.3 ± 0.03 |
C10-DD | 230 ± 10 | 180 ± 9 | 120 ± 6 | 55 ± 3 | 0.8 ± 0.08 | 0.5 ± 0.05 | 0.2 ± 0.02 |
C10-DdD | 260 ± 10 | 200 ± 10 | 110 ± 6 | 55 ± 3 | 0.8 ± 0.08 | 0.4 ± 0.04 | 0.2 ± 0.02 |
C10-Sil500 | 660 ± 30 | 490 ± 25 | 240 ± 10 | 135 ± 7 | 0.7 ± 0.07 | 0.4 ± 0.04 | 0.2 ± 0.02 |
C10-Sil25-OD | 1010 ± 50 | 420 ± 20 | 220 ± 10 | 125 ± 6 | 0.4 ± 0.04 | 0.2 ± 0.02 | 0.1 ± 0.01 |
Membrane | Solubility Coefficient, 10−2 cm3/(cm3cm.Hg) | Solubility Selectivity (X/N2) | |||||
---|---|---|---|---|---|---|---|
N2 | CH4 | C2H6 | C4H10 | CH4 | C2H6 | C4H10 | |
C10-OD | 0.1 ± 0.01 | 0.4 ± 0.02 | 2.8 ± 0.14 | 34 ± 2 | 3.9 ± 0.4 | 28 ± 3 | 344 ± 30 |
C10-DD | 0.2 ± 0.01 | 0.7 ± 0.04 | 3.8 ± 0.20 | 62 ± 3 | 4.6 ± 0.5 | 25 ± 3 | 416 ± 40 |
C10-DdD | 0.2 ± 0.01 | 0.7 ± 0.04 | 3.5 ± 0.18 | 57 ± 3 | 4.4 ± 0.4 | 23 ± 2 | 379 ± 40 |
C10-Sil500 | 0.1 ± 0.01 | 0.5 ± 0.03 | 3.0 ± 0.15 | 36 ± 2 | 4.6 ± 0.5 | 27 ± 3 | 327 ± 30 |
C10-Sil25-OD | 0.1 ± 0.01 | 0.9 ± 0.05 | 5.3 ± 0.27 | 65 ± 3 | 7.8 ± 0.8 | 44 ± 4 | 542 ± 50 |
Membrane | Permeability Coefficient, Barrer | Permselectivity (X/N2) | |||||
---|---|---|---|---|---|---|---|
N2 | CH4 | C2H6 | C4H10 | CH4 | C2H6 | C4H10 | |
C10-OD | 53 ± 3 | 194 ± 10 | 723 ± 40 | 5510 ± 280 | 3.7 ± 0.4 | 13.6 ± 1.4 | 104 ± 10 |
C10-DD | 35 ± 2 | 123 ± 6 | 395 ± 20 | 3170 ± 160 | 3.6 ± 0.4 | 11.4 ± 1.1 | 92 ± 9 |
C10-DdD | 39 ± 2 | 133 ± 7 | 340 ± 20 | 3000 ± 150 | 3.4 ± 0.3 | 10.2 ± 1.0 | 77 ± 8 |
C10-Sil500 | 75 ± 4 | 250 ± 10 | 712 ± 40 | 4780 ± 240 | 3.3 ± 0.3 | 9.5 ± 1.0 | 63 ± 6 |
C10-Sil25-OD | 120 ± 6 | 400 ± 20 | 1180 ± 60 | 8200 ± 410 | 3.3 ± 0.3 | 9.8 ± 1.0 | 68 ± 7 |
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Grushevenko, E.; Rokhmanka, T.; Sokolov, S.; Basko, A.; Borisov, I.; Pochivalov, K.; Volkov, A. Influence of Type of Cross-Linking Agent on Structure and Transport Properties of Polydecylmethylsiloxane. Polymers 2023, 15, 4436. https://doi.org/10.3390/polym15224436
Grushevenko E, Rokhmanka T, Sokolov S, Basko A, Borisov I, Pochivalov K, Volkov A. Influence of Type of Cross-Linking Agent on Structure and Transport Properties of Polydecylmethylsiloxane. Polymers. 2023; 15(22):4436. https://doi.org/10.3390/polym15224436
Chicago/Turabian StyleGrushevenko, Evgenia, Tatiana Rokhmanka, Stepan Sokolov, Andrey Basko, Ilya Borisov, Konstantin Pochivalov, and Alexey Volkov. 2023. "Influence of Type of Cross-Linking Agent on Structure and Transport Properties of Polydecylmethylsiloxane" Polymers 15, no. 22: 4436. https://doi.org/10.3390/polym15224436