Gas sorption and transport in syndiotactic polystyrene with nanoporous crystalline phase

Larobina, Domenico; Sanguigno, Luigi; Venditto, Vincenzo; Guerra, Gaetano; Mensitieri, Giuseppe

doi:10.1016/j.polymer.2003.11.009

Cited by 79 publications

(59 citation statements)

References 39 publications

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“…It presents two identical cavities and eight styrene monomeric units per unit cell [16] and rapidly and selectively absorbs low-molecular-mass guest molecules even at very low activities, producing clathrate [28][29][30][31][32][33] and intercalate [34][35][36][37] co-crystals. Several recent studies have shown that the d crystalline phase is promising for applications in chemical separations [38][39][40][41] and air/water purification [42][43][44][45][46][47][48][49][50] as well as in sensorics [51][52][53][54][55][56]. It has been also found that the self-assembling of this polymeric framework and active guest molecules into co-crystals reduce guest diffusivity and prevent guest self-aggregation (without recurring to chemical reactions).…”

Section: Introductionmentioning

confidence: 97%

Understanding at molecular level of nanoporous and co-crystalline materials based on syndiotactic polystyrene

Milano

Guerra

2009

Progress in Materials Science

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Section: Introductionmentioning

confidence: 97%

Understanding at molecular level of nanoporous and co-crystalline materials based on syndiotactic polystyrene

Milano

Guerra

2009

Progress in Materials Science

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“…Among various chemical absorbents, metal oxides [9][10][11][12], Li-containing zirconates [13][14][15][16][17] and poly-ionic liquids [18,19] have been investigated. Numerous studies have explored methods of physisorption using functionalized/modified nanoporous solids for the abatement of CO 2 , for examples, microporous zeolites [20][21][22][23][24][25][26], activated carbons [27][28][29], porous coordination polymers or organic nanostructure materials [30][31][32]. However, these materials normally exhibit low CO 2 adsorption capacity (typically smaller to the benchmark value of ca.…”

Section: Introductionmentioning

confidence: 99%

Highly Stable Amine-modified Mesoporous Silica Materials for Efficient CO2 Capture

Liu

Lee

et al. 2009

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A highly efficient and stable solid adsorbent invoking a direct incorporation of tetraethylenepentamine (TEPA) onto the as-synthesized mesocelullar silica foam (MSF) has been developed for CO 2 capture. Unlike most amine-functionalized silicas, which typically exhibit CO 2 adsorption capacities less than 2.0 mmol/g, such organic template occluded mesoporous silica-amine composites exhibited remarkably high CO 2 uptake as high as 4.5 mmol/g at 348 K and 1 atm. Moreover, notable increases in CO 2 adsorption capacities of the composite materials were observed when in the presence of humidity. Durability test performed by cyclic adsorption-desorption revealed that such adsorbents also possess excellent stability, even though a slight decrease in adsorption capacity over time was observed.

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“…However, some solvent molecules are absorbed easily into the crystalline region of the nanoporous δ form even when at low vapor activities. 14,15 Some possible applications of this property of sPS such as chemical separations and sensing elements have been recently pointed out. [16][17][18] As well as the preferential sorption of solvent vapor in the nanoporous δ form, the clathrate phase shows an interesting phenomenon.…”

Section: Introductionmentioning

confidence: 99%

Guest Exchange Mechanism in the Clathrate Phase of Syndiotactic Polystyrene

2005

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The guest exchange mechanism in the clathrate phase of syndiotactic polystyrene (sPS) was investigated by ATR-FTIR spectroscopy utilizing the selectivity of the sPS crystalline region about the conformation of 1,2-dichloroethane (DCE). 1,2-Dichloroethane (h-DCE) and its deuterated compound (d-DCE) were used as guests to analyze the sorption behavior of the sorbate molecules and the desorption behavior of the guest molecules stored in the crystalline region beforehand, simultaneously. The spectral changes on the exposure of an sPS film containing d-DCE to h-DCE vapor were followed, and the information about the guest exchange processes in both the crystalline and amorphous regions were obtained. In the earliest stage, the exchange occurred mainly in the amorphous region, while the exchange in the crystalline region proceeded gradually for a long time. On the basis of this finding, the diffusion coefficients of DCE molecules in the crystalline and amorphous regions were estimated.

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Gas sorption and transport in syndiotactic polystyrene with nanoporous crystalline phase

Cited by 79 publications

References 39 publications

Understanding at molecular level of nanoporous and co-crystalline materials based on syndiotactic polystyrene

Understanding at molecular level of nanoporous and co-crystalline materials based on syndiotactic polystyrene

Highly Stable Amine-modified Mesoporous Silica Materials for Efficient CO2 Capture

Guest Exchange Mechanism in the Clathrate Phase of Syndiotactic Polystyrene

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