2020
DOI: 10.1021/acs.iecr.9b06141
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Construction of Microporous Polyimides with Tunable Pore Size and High CO2 Selectivity Based on Cross-Linkable Linear Polyimides

Abstract: Polyimides with intrinsic microporosity have been well developed and explored in the field of gas adsorption and separation. However, most linear polyimides without rigid and distorted segments do not have porous structure owing to the densely packed polymer chains. Two cross-linked polyimides (PEDA-PI-CL and PEQDA-PI-CL) were synthesized from 3,3′bis(2,3,5,6-tetrafluoro-4-vinylphenoxy)-4,4′-biphenyldiamine (TFVBPA) with 2,5-bis(3,4-dicarboxyphenoxy)-4′-phenyl dianhydride (PEDA) and 2,5-bis(3,4-dicarboxyphenox… Show more

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Cited by 11 publications
(3 citation statements)
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“…Manipulation of the crystallinity of porous pPIs via synthetic condition variations is clearly demonstrated in pPIs synthesised by Fang et al 9 and Machitha et al 63 It was found that ionothermally synthesised pPIs demonstrated higher crystallinity and therefore higher surface areas than the solvothermally synthesised analogous counterparts (with lower crystallinity) in these two studies. The trend of higher surface area of PI-COFs over amorphous pPIs was also observed by Fang et al, 80 Li et al, 86 and Wang et al, 33 each synthesizing pPIs with L3 and C1. They found surface areas of up to 1876 m 2 g -1 for crystalline materials, with amorphous materials (from the same starting materials) possessing lower surface areas of up to 1407 m 2 g -1 .…”
Section: Amorphous Vs Crystalline Ppissupporting
confidence: 71%
See 1 more Smart Citation
“…Manipulation of the crystallinity of porous pPIs via synthetic condition variations is clearly demonstrated in pPIs synthesised by Fang et al 9 and Machitha et al 63 It was found that ionothermally synthesised pPIs demonstrated higher crystallinity and therefore higher surface areas than the solvothermally synthesised analogous counterparts (with lower crystallinity) in these two studies. The trend of higher surface area of PI-COFs over amorphous pPIs was also observed by Fang et al, 80 Li et al, 86 and Wang et al, 33 each synthesizing pPIs with L3 and C1. They found surface areas of up to 1876 m 2 g -1 for crystalline materials, with amorphous materials (from the same starting materials) possessing lower surface areas of up to 1407 m 2 g -1 .…”
Section: Amorphous Vs Crystalline Ppissupporting
confidence: 71%
“…The surface area of the pPIs after crosslinking (without metal absorption) were 733 m 2 g -1 , significantly higher than the non-crosslinked pPI (167 m 2 g -1 see Table 3). Another study by Wang et al 33 used an amine monomer A15 bearing a cross-linkable ethynyl group in combination with non-cross-linkable L17 and cross-linkable alkene-containing L18 dianhydride, respectively. The surface areas of the pPIs from the non-cross-linkable dianhydride was 78 m 2 g -1 whilst that using the cross-linkable group was 64 m 2 g -1 .…”
Section: Post-polymerisation Crosslinkingmentioning
confidence: 99%
“…The school running mode of school-enterprise cooperation is an effective carrier for the development of colleges and enterprises. It is not only a way for enterprises to cultivate talents but also a teaching measure for vocational colleges to actively set up professional industries [ 9 ]. The two sides can realize cooperation on the basis of mutual benefit and establish vocational colleges as a training base for professional and skilled talents.…”
Section: Related Workmentioning
confidence: 99%