Swollen polymeric complex membranes for olefin/paraffin separation

Yang, Jin-Sheng; Hsiue, Ging‐Ho

doi:10.1016/s0376-7388(97)00231-7

Cited by 26 publications

(10 citation statements)

References 19 publications

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“…To enhance the performance of membranes for olefin/paraffin separation, previous work has focused on the development of facilitated‐transport membranes, such as immobilized liquid membranes, solvent‐swollen membranes, and ion‐exchanged membranes containing silver carriers 4–10. However, the commercial application of liquid membranes is limited because they are operated with liquid‐solvent/vapor‐saturated feed and permeate streams.…”

Section: Introductionmentioning

confidence: 99%

Soluble Receptors for Advanced Glycation End Products (sRAGE) as a Predictor of Restenosis Following Percutaneous Coronary Intervention

McNair

Wells

Qureshi

et al. 2010

Clinical Cardiology

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Background: Interaction of advanced glycation end products (AGEs) with their receptor (RAGE) increases expression of inflammatory mediators (tumor necrosis factor alpha [TNF-α] and soluble vascular cell adhesion molecule-1 [sVCAM-1]) and induces oxygen radicals that are implicated in atherosclerosis. Balloon-injuryinduced atherosclerosis is associated with increased expression of AGEs and RAGE. The soluble receptor for AGE (sRAGE), which acts as a decoy for RAGE ligands (AGEs), prevents atherosclerosis in this model. Hypothesis: We evaluated: 1) whether post-percutaneous coronary intervention (PCI) restenosis is associated with low pre-PCI serum sRAGE, high serum AGEs, TNF-α, and sVCAM-1, and high AGE/sRAGE ratio; 2) whether pre-PCI and post-PCI levels of these markers are similar in patients with or without restenosis; and 3) whether sRAGE and AGE/sRAGE ratio have predictive value for post-PCI restenosis. Methods: Angiography was performed in 46 patients with non-ST-segment elevation myocardial infarction for assessment of restenosis. Serum sRAGE, AGEs, TNF-α, and sVCAM-1 were measured in these patients and 20 control subjects. Results: Nineteen of the 46 patients developed post-PCI restenosis, which was associated with lower sRAGE and higher TNF-α and sVCAM-1 levels, and higher AGE/sRAGE ratio compared with patients without restenosis. Pre-PCI and post-PCI levels of these biomarkers were similar in both groups, except in patients with restenosis, in whom the post-PCI level of sRAGE was lower and TNF-α was higher than the pre-PCI levels. The sensitivity and negative predictive value of sRAGE were 100%, and were higher than those of AGE/sRAGE ratio in identifying post-PCI restenosis. Conclusions: Both low serum sRAGE levels and high AGE/sRAGE ratio have predictive value for post-PCI restenosis.

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Section: Introductionmentioning

confidence: 99%

Soluble Receptors for Advanced Glycation End Products (sRAGE) as a Predictor of Restenosis Following Percutaneous Coronary Intervention

McNair

Wells

Qureshi

et al. 2010

Clinical Cardiology

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“…Initially, the development of facilitated transport membranes are based on immobilized liquid membranes, solvent-swollen membranes or ion exchanged membranes. [12][13][14][15][16] However, the commercial application of liquid membranes is limited because they are operated with liquid solvent-vapor saturated feed and permeate streams. Thus, many problems are encountered; the loss of the liquid solvent and carrier, the limits of the operation temperature and the membrane thickness.…”

Section: Introductionmentioning

confidence: 99%

Silver polymer electrolyte membranes for facilitated olefint transport: carrier properties, transport mechanism and separation performance

2004

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Facilitated transport membranes for the separation of olefin/paraffin mixtures have long been of interest in separation membrane science because olefins, such as propylene and ethylene, which are important chemicals in petrochemical industries, are currently separated by energy-intensive cryogenic distillation processes. Recently, solid polymer electrolyte membranes containing silver ions have demonstrated remarkable performance in the separation of olefin/paraffin mixtures in the solid state and, thus, they can be considered as alternatives to cryogenic distillation. Here, we review recent progress, and critical issues affecting in the use of facilitated olefin transport membranes; in particular, we provide a general overview with reference to carrier properties, transport mechanisms, and separation performance.

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“…Therefore they adopted another method, γ-ray pre-irradiation, to enhance the GD. PE, silicone rubber (SR) and poly[1-(trimethylsilyl)-1-propyne] (PTMSP) membranes were grafted with AAc by peroxidation of γ-ray in the presence of Mohr's salt, which could effectively restrain the homopolymerization (Yang and Hsiue, 1998). The highest GD was up to 64.7 wt.% when the dose was 15 kGy.…”

Section: γ-Ray Irradiationmentioning

confidence: 99%

Surface Modification by Graft Polymerization

2009

Advanced Topics in Science and Technology in China

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Membrane technologies have now been widely exploited and utilized on a large scale due to the unique separation principles of membranes. For further progress, however, membranes with favorable properties and functionabilities must be designed and prepared. Based on existing membrane materials, modification of them is necessary. Among different technologies, graft polymerization is a universal modification method for preparing a "tailored" membrane surface with desired functions. The grafted polymer chains on the membrane surface play an important role in membrane applications. In this chapter methods of graft polymerization on the membrane surfaces and the relative applications are introduced.

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Swollen polymeric complex membranes for olefin/paraffin separation

Cited by 26 publications

References 19 publications

Soluble Receptors for Advanced Glycation End Products (sRAGE) as a Predictor of Restenosis Following Percutaneous Coronary Intervention

Soluble Receptors for Advanced Glycation End Products (sRAGE) as a Predictor of Restenosis Following Percutaneous Coronary Intervention

Silver polymer electrolyte membranes for facilitated olefint transport: carrier properties, transport mechanism and separation performance

Surface Modification by Graft Polymerization

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