A detailed investigation into the gas permeation properties of addition-type poly(5-triethoxysilyl-2-norbornene)

Белов, Н. А.; Nikiforov, R. Yu.; Старанникова, Л. Э.; Gmernicki, Kevin R.; Maroon, Christopher R.; Long, Brian K.; Shantarovich, V. P.; Yampolskii, Yuri

doi:10.1016/j.eurpolymj.2017.06.030

Cited by 32 publications

(13 citation statements)

References 27 publications

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“…We were particularly interested in polynorbornenes made by vinyl‐addition polymerization (VA‐PNBs), which contain norbornane repeat units having an estimated strain energy of 73.4 kJ mol −1 . In general, VA‐PNBs are easy to synthesize, offer a wide variety of side‐chain functionality, and display desirable mechanical and chemical properties that have thus motivated their widespread application and industrial production . To our knowledge, the mechanochemical reactivity of VA‐PNBs has not been reported.…”

Section: Methodsmentioning

confidence: 99%

The Intrinsic Mechanochemical Reactivity of Vinyl‐Addition Polynorbornene

et al. 2019

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Herein we report the discovery of the intrinsic mechanochemical reactivity of vinyl‐addition polynorbornene (VA‐PNB), which has strained bicyclic ring repeat units along the polymer backbone. VA‐PNBs with three different side chains were found to undergo ring‐opening olefination upon sonication in dilute solutions. The sonicated polymers exhibited spectroscopic signatures consistent with conversion of the bicyclic norbornane repeat units into the ring‐open isomer typical of polynorbornene made by ring‐opening metathesis polymerization (ROMP‐PNB). Thermal analysis and evaluation of chain‐scission kinetics suggest that sonication of VA‐PNB results in chain segments containing a statistical mixture of vinyl‐added and ROMP‐type repeat units.

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Section: Methodsmentioning

confidence: 99%

The Intrinsic Mechanochemical Reactivity of Vinyl‐Addition Polynorbornene

et al. 2019

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“…The selectivity of butane/methane separation (α(C 4 /C 1 )) was up to 21.5. The presence of side substituents with the flexible Si-O-C or Si-O-Si bonds improved the selectivity of separation of hydrocarbons or CO 2 /N 2 mixtures not only for the metathesis polynorbornenes but also for the addition polymers [58,69,97,107,[127][128]. This approach can be considered as a new tool for the macromolecular design of high performance membrane materials for gas separation.…”

Section: Approaches To the Production Of Siliconcontaining Polynorbormentioning

confidence: 98%

Macromolecular Design and Synthesis of Polymers from Silicon- Containing Norbornenes for Membrane Gas Separation

Бермешев¹,

Финкельштейн²

2018

INEOS OPEN

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The present review highlights recent approaches to the synthesis of highly permeable polymers by metathesis and addition polymerization of silicon-containing norbornenes. The main focus is on the authors' own works that utilize Me 3 Sisubstituted exo-tricyclononenes as highly reactive norbornenetype monomers for polymerization. The basic relationships between polymer structures and their gas permeability characteristics are considered. The possibility of tuning the gas transport properties of polymers (permeability and selectivity) by modification of their structures is shown. (M. V.Bermeshev)

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“…A second possibility is a vinyl-addition polymerization which typically produces polynorbornenes with rigid saturated backbones with high glass transition temperature ( T g ) [8]. This variety of monomers and polymerization methods produces a wealth of different polynorbornenes which can be used for gas separation membranes [6,8,9,10,11]. Specifically, vinyl-addition polynorbornenes show a lot of promise as they have higher thermal stability, plasticization resistance and a rigid and sterically demanding bicyclic backbone [6,11].…”

Section: Introductionmentioning

confidence: 99%

“…Polynorbornene with trimethylsilyl groups showed an extremely high CO 2 permeability of 4350 Barrer but a low CO 2 /CH 4 selectivity of 5.5 [15]. Recently, high CO 2 permeabilities were achieved (1350 Barrer) with a CO 2 /N 2 selectivity of 17 by using a triethylsiloxane pendant side group [9] and impressive BET surface areas (420–970 m 2 /g) were achieved with derivatized polynorbornenes [16]. From the wide variety of functionalized norbornene monomers that were used for gas separation membranes, 5-vinyl-2-norbornene (VNB) was still missing.…”

Section: Introductionmentioning

confidence: 99%

Polyvinylnorbornene Gas Separation Membranes

et al. 2019

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Polynorbornenes are already used in a wide range of applications. They are also considered materials for polymer gas separation membranes because of their favorable thermal and chemical resistance, rigid backbone and varied chemistry. In this study, the use of 5-vinyl-2-norbornene (VNB), a new monomer in the field of gas separations, is investigated by synthesizing two series of polymers via a vinyl-addition polymerization. The first series investigates the influence of the VNB content on gas separation in a series of homo and copolymers with norbornene. The second series explores the influence of the crosslinking of polyvinylnorbornene (pVNB) on gas separation. The results indicate that while crosslinking had little effect, the gas separation performance could be fine-tuned by controlling the VNB content. As such, this work demonstrates an interesting way to significantly extend the fine-tuning possibilities of polynorbornenes for gas separations.

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A detailed investigation into the gas permeation properties of addition-type poly(5-triethoxysilyl-2-norbornene)

Cited by 32 publications

References 27 publications

The Intrinsic Mechanochemical Reactivity of Vinyl‐Addition Polynorbornene

The Intrinsic Mechanochemical Reactivity of Vinyl‐Addition Polynorbornene

Macromolecular Design and Synthesis of Polymers from Silicon- Containing Norbornenes for Membrane Gas Separation

Polyvinylnorbornene Gas Separation Membranes

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