Study of Gases Permeation in Necklace-Shaped Dimethylsiloxane Polymers Bearing POSS Cages
The transport of small gases (H<sub>2</sub>, CO<sub>2</sub>, N<sub>2</sub>, O<sub>2</sub>) through a series of novel membranes based on necklace-shaped inorganic polymers (DMS@POSS), in which a polyhedral oligomeric silsesquioxane (POSS) cage unit and...
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| Format: | Article |
| Language: | English |
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MDPI AG
2019-04-01
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| Series: | Membranes |
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| Online Access: | https://www.mdpi.com/2077-0375/9/4/54 |
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| author | Roman Selyanchyn Shigenori Fujikawa Naohiro Katsuta Kazuya Suwa Masashi Kunitake |
| author_facet | Roman Selyanchyn Shigenori Fujikawa Naohiro Katsuta Kazuya Suwa Masashi Kunitake |
| author_sort | Roman Selyanchyn |
| collection | DOAJ |
| description | The transport of small gases (H<sub>2</sub>, CO<sub>2</sub>, N<sub>2</sub>, O<sub>2</sub>) through a series of novel membranes based on necklace-shaped inorganic polymers (DMS@POSS), in which a polyhedral oligomeric silsesquioxane (POSS) cage unit and soft chains of oligo-dimethyl siloxane (DMS) were alternately connected, was investigated. The influence of the DMS chain length and crosslinking density of the DMS@POSS on membrane properties were studied. The membranes revealed characteristic structure-property relation towards both glass transition and gases transport. Specifically, clear dependence of properties from the length of DMS units (or overall siloxane content) was revealed. Gas transport properties, when compared to state-of-art polydimethylsiloxane and commercial silicone rubber, demonstrated significantly higher selectivity of DMS@POSS for carbon dioxide (in CO<sub>2</sub>/N<sub>2</sub>), hydrogen (in H<sub>2</sub>/N<sub>2</sub>) and oxygen (in O<sub>2</sub>/N<sub>2</sub>) but lowered permeability, proportional to the amount of POSS in the material. With a precise control over mechanical and thermal properties compared to conventional silicone rubbers, described materials could be considered as materials of choice in niche gas separation or other applications. |
| first_indexed | 2024-03-12T10:55:28Z |
| format | Article |
| id | doaj.art-4eec4f424f124cb1a95a1e47732389ed |
| institution | Directory Open Access Journal |
| issn | 2077-0375 |
| language | English |
| last_indexed | 2024-03-12T10:55:28Z |
| publishDate | 2019-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Membranes |
| spelling | doaj.art-4eec4f424f124cb1a95a1e47732389ed2023-09-02T06:25:18ZengMDPI AGMembranes2077-03752019-04-01945410.3390/membranes9040054membranes9040054Study of Gases Permeation in Necklace-Shaped Dimethylsiloxane Polymers Bearing POSS CagesRoman Selyanchyn0Shigenori Fujikawa1Naohiro Katsuta2Kazuya Suwa3Masashi Kunitake4WPI International Institute for Carbon-Neutral Energy Research (WPI-I2CNER) Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, JapanWPI International Institute for Carbon-Neutral Energy Research (WPI-I2CNER) Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, JapanFaculty of Advanced Science and Technology, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto 860-8555, JapanJNC Petrochemical Corporation, Ichihara Research Center; 5-1 Goikagan, Ichihara, Chiba 290-8551, JapanFaculty of Advanced Science and Technology, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto 860-8555, JapanThe transport of small gases (H<sub>2</sub>, CO<sub>2</sub>, N<sub>2</sub>, O<sub>2</sub>) through a series of novel membranes based on necklace-shaped inorganic polymers (DMS@POSS), in which a polyhedral oligomeric silsesquioxane (POSS) cage unit and soft chains of oligo-dimethyl siloxane (DMS) were alternately connected, was investigated. The influence of the DMS chain length and crosslinking density of the DMS@POSS on membrane properties were studied. The membranes revealed characteristic structure-property relation towards both glass transition and gases transport. Specifically, clear dependence of properties from the length of DMS units (or overall siloxane content) was revealed. Gas transport properties, when compared to state-of-art polydimethylsiloxane and commercial silicone rubber, demonstrated significantly higher selectivity of DMS@POSS for carbon dioxide (in CO<sub>2</sub>/N<sub>2</sub>), hydrogen (in H<sub>2</sub>/N<sub>2</sub>) and oxygen (in O<sub>2</sub>/N<sub>2</sub>) but lowered permeability, proportional to the amount of POSS in the material. With a precise control over mechanical and thermal properties compared to conventional silicone rubbers, described materials could be considered as materials of choice in niche gas separation or other applications.https://www.mdpi.com/2077-0375/9/4/54POSSorganic–inorganic hybridnecklace shaped polymergas separation membrane |
| spellingShingle | Roman Selyanchyn Shigenori Fujikawa Naohiro Katsuta Kazuya Suwa Masashi Kunitake Study of Gases Permeation in Necklace-Shaped Dimethylsiloxane Polymers Bearing POSS Cages Membranes POSS organic–inorganic hybrid necklace shaped polymer gas separation membrane |
| title | Study of Gases Permeation in Necklace-Shaped Dimethylsiloxane Polymers Bearing POSS Cages |
| title_full | Study of Gases Permeation in Necklace-Shaped Dimethylsiloxane Polymers Bearing POSS Cages |
| title_fullStr | Study of Gases Permeation in Necklace-Shaped Dimethylsiloxane Polymers Bearing POSS Cages |
| title_full_unstemmed | Study of Gases Permeation in Necklace-Shaped Dimethylsiloxane Polymers Bearing POSS Cages |
| title_short | Study of Gases Permeation in Necklace-Shaped Dimethylsiloxane Polymers Bearing POSS Cages |
| title_sort | study of gases permeation in necklace shaped dimethylsiloxane polymers bearing poss cages |
| topic | POSS organic–inorganic hybrid necklace shaped polymer gas separation membrane |
| url | https://www.mdpi.com/2077-0375/9/4/54 |
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