New Synthetic Methods of Novel Nanoporous Polycondensates and Excellent Oxygen Permselectivity of Their Composite Membranes
Two kinds of novel nanoporous polycondensates (sc(<b>Rf</b>)) have been synthesized by two new preparation methods consisting of polycondensation and highly selective photocyclicaromataization of 1/3 helical cis-cis polyphenylacetylenes with polymerizable groups. By the original methods,...
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doaj-35255df680b84e5eb2b49b76124743532020-11-25T00:42:43ZengMDPI AGNanomaterials2079-49912019-06-019685910.3390/nano9060859nano9060859New Synthetic Methods of Novel Nanoporous Polycondensates and Excellent Oxygen Permselectivity of Their Composite MembranesYu Zang0Toshiki Aoki1Masahiro Teraguchi2Takashi Kaneko3Hongge Jia4Liqun Ma5Fengjuan Miao6Heilongjiang Province Key Laboratory of Polymeric Composition Material, College of Materials Science and Engineering, Qiqihar University, Wenhua Street 42, Qiqihar 161006, ChinaFaculty of Engineering, Niigata University, Ikarashi 2-8050, Nishi-ku, Niigata 950-2181, JapanFaculty of Engineering, Niigata University, Ikarashi 2-8050, Nishi-ku, Niigata 950-2181, JapanFaculty of Engineering, Niigata University, Ikarashi 2-8050, Nishi-ku, Niigata 950-2181, JapanHeilongjiang Province Key Laboratory of Polymeric Composition Material, College of Materials Science and Engineering, Qiqihar University, Wenhua Street 42, Qiqihar 161006, ChinaHeilongjiang Province Key Laboratory of Polymeric Composition Material, College of Materials Science and Engineering, Qiqihar University, Wenhua Street 42, Qiqihar 161006, ChinaCollege of Communications and Electronics Engineering, Qiqihar University, Wenhua Street 42, Qiqihar 161006, ChinaTwo kinds of novel nanoporous polycondensates (sc(<b>Rf</b>)) have been synthesized by two new preparation methods consisting of polycondensation and highly selective photocyclicaromataization of 1/3 helical cis-cis polyphenylacetylenes with polymerizable groups. By the original methods, new well-defined sheet polymers having nanopores or nanospaces have been synthesized for the first time. Their composite membranes, containing small amounts (1.0 wt%) of sc(<b>Rf</b>), had ultrahigh oxygen permeability (<i>P</i>o<sub>2</sub> > 1000 barrer), and their plots were beyond the Robeson’s upper bound line in the graph of oxygen permselectivity (<i>α</i> = <i>P</i>o<sub>2</sub>/<i>P</i><sub>N2</sub>) versus <i>P</i>o<sub>2</sub>. Both <i>α</i> and <i>P</i>o<sub>2</sub> values were enhanced by adding only small amounts (1.0 wt%) of sc(<b>Rf</b>). One of the sc(<b>Rf</b>)s synthesized on the base membrane surface showed the best performance, i.e., <i>P</i>o<sub>2</sub> = 5300 barrer and <i>α</i> = 2.5. The membrane surface was effectively covered by sc(<b>Rf</b>), judging from the contact angle values. It is thought that nanopores and nanospaces created in and between sc(<b>Rf</b>) molecules played an important role for the enhancement of both <i>α</i> and <i>P</i>o<sub>2</sub>/<i>P</i><sub>N2</sub>.https://www.mdpi.com/2079-4991/9/6/859synthesishigh oxygen permselectivitynanoporenanospacepolyphenylacetylenepolycondensateshighly selective photocyclicaromataization (SCAT) |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Yu Zang Toshiki Aoki Masahiro Teraguchi Takashi Kaneko Hongge Jia Liqun Ma Fengjuan Miao |
spellingShingle |
Yu Zang Toshiki Aoki Masahiro Teraguchi Takashi Kaneko Hongge Jia Liqun Ma Fengjuan Miao New Synthetic Methods of Novel Nanoporous Polycondensates and Excellent Oxygen Permselectivity of Their Composite Membranes Nanomaterials synthesis high oxygen permselectivity nanopore nanospace polyphenylacetylene polycondensates highly selective photocyclicaromataization (SCAT) |
author_facet |
Yu Zang Toshiki Aoki Masahiro Teraguchi Takashi Kaneko Hongge Jia Liqun Ma Fengjuan Miao |
author_sort |
Yu Zang |
title |
New Synthetic Methods of Novel Nanoporous Polycondensates and Excellent Oxygen Permselectivity of Their Composite Membranes |
title_short |
New Synthetic Methods of Novel Nanoporous Polycondensates and Excellent Oxygen Permselectivity of Their Composite Membranes |
title_full |
New Synthetic Methods of Novel Nanoporous Polycondensates and Excellent Oxygen Permselectivity of Their Composite Membranes |
title_fullStr |
New Synthetic Methods of Novel Nanoporous Polycondensates and Excellent Oxygen Permselectivity of Their Composite Membranes |
title_full_unstemmed |
New Synthetic Methods of Novel Nanoporous Polycondensates and Excellent Oxygen Permselectivity of Their Composite Membranes |
title_sort |
new synthetic methods of novel nanoporous polycondensates and excellent oxygen permselectivity of their composite membranes |
publisher |
MDPI AG |
series |
Nanomaterials |
issn |
2079-4991 |
publishDate |
2019-06-01 |
description |
Two kinds of novel nanoporous polycondensates (sc(<b>Rf</b>)) have been synthesized by two new preparation methods consisting of polycondensation and highly selective photocyclicaromataization of 1/3 helical cis-cis polyphenylacetylenes with polymerizable groups. By the original methods, new well-defined sheet polymers having nanopores or nanospaces have been synthesized for the first time. Their composite membranes, containing small amounts (1.0 wt%) of sc(<b>Rf</b>), had ultrahigh oxygen permeability (<i>P</i>o<sub>2</sub> > 1000 barrer), and their plots were beyond the Robeson’s upper bound line in the graph of oxygen permselectivity (<i>α</i> = <i>P</i>o<sub>2</sub>/<i>P</i><sub>N2</sub>) versus <i>P</i>o<sub>2</sub>. Both <i>α</i> and <i>P</i>o<sub>2</sub> values were enhanced by adding only small amounts (1.0 wt%) of sc(<b>Rf</b>). One of the sc(<b>Rf</b>)s synthesized on the base membrane surface showed the best performance, i.e., <i>P</i>o<sub>2</sub> = 5300 barrer and <i>α</i> = 2.5. The membrane surface was effectively covered by sc(<b>Rf</b>), judging from the contact angle values. It is thought that nanopores and nanospaces created in and between sc(<b>Rf</b>) molecules played an important role for the enhancement of both <i>α</i> and <i>P</i>o<sub>2</sub>/<i>P</i><sub>N2</sub>. |
topic |
synthesis high oxygen permselectivity nanopore nanospace polyphenylacetylene polycondensates highly selective photocyclicaromataization (SCAT) |
url |
https://www.mdpi.com/2079-4991/9/6/859 |
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