Capillary viscometry of molten polycaprolactam

Pezzin, G.; Gechele, G.B.

doi:10.1002/app.1964.070080517

Cited by 48 publications

(16 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Decreasing feed rate at a constant screw speed also increased the residence time. This is a similar observation suggested by earlier investigators 24, 27, 28…”

Section: Discussion and Interpretationsupporting

confidence: 93%

Volume and process of care in high‐risk cancer surgery

Birkmeyer

Sun

Goldfaden

et al. 2006

Cancer

212

147

View full text Add to dashboard Cite

The adult subventricular zone (SVZ) contains progenitors cells, which continually give rise to new neurons that migrate along the rostral migratory stream (RMS) to the olfactory bulbs (OB). Prokineticin receptor 2 (ProKR2) is a G‐protein‐coupled receptor that plays an essential role in this migration process. However, the identity of the prokr2‐expressing cells has not yet been clearly established. Here, we have characterized in detail the identity of the prokr2‐expressing cells in the SVZ/RMS/OB pathway in adult mice. In the SVZ, accumulation of prokr2 transcripts was detected in almost all migrating neuroblasts or type A cells as well as in a large population of their precursors, the rapidly dividing type C cells. Moreover, we observed that, in dissociated SVZ cells from Mash1::GFP postnatal mice, ProKR2 protein is also present in type C and type A cells. We found that, along the RMS and in the OB, prokr2 expression was restricted to migrating type A cells and was absent in astrocytes. Finally, we observed a highly marked decrease of prokr2 expression in Mash1−/− mutant mice, suggesting that this transcription factor directly or indirectly regulates prokr2 expression. Although the expression of ProKR2 in migrating type A cells is in good agreement with the essential role played by this receptor during this migration process, its expression in a large population of their progenitors suggests an additional function for ProKR2, providing novel insights into the role of ProKR2/ProK2 signalling in adult neurogenesis. J. Comp. Neurol. 512:232–242, 2009. © 2008 Wiley‐Liss, Inc.

show abstract

“…Decreasing feed rate at a constant screw speed also increased the residence time. This is a similar observation suggested by earlier investigators 24, 27, 28…”

Section: Discussion and Interpretationsupporting

confidence: 93%

Volume and process of care in high‐risk cancer surgery

Birkmeyer

Sun

Goldfaden

et al. 2006

Cancer

212

147

View full text Add to dashboard Cite

show abstract

“…All measurements were carried out under nitrogen. The shear-¯ow behavior of dierent molar mass PA-6 samples has been discussed by Pezzin and Gechele [33]. They found an increase in the melt viscosity with holding time.…”

Section: Rheological Characterizationmentioning

confidence: 93%

Rheology of nanocomposites based on layered silicates and polyamide-12

Hoffmann

Kreßler²,

Stöppelmann

et al. 2000

Colloid & Polymer Science

144

View full text Add to dashboard Cite

“…This is a similar observation suggested by earlier investigators. 24,27,28 Vergnes and coworkers 29 investigated polymerization of -caprolactone in a twin-screw extruder. Experiments were performed to find the influence of processing conditions (feed rate, screw speed, barrel temperature, initiator concentration).…”

Section: Comparison To Other Earlier Workmentioning

confidence: 99%

Continuous polymerization of ω‐lauryl lactam in an intermeshing corotating twin‐screw extruder

Kim

White

2005

J of Applied Polymer Sci

View full text Add to dashboard Cite

This article describes the synthesis of poly(-lauryl lactam) by a reactive extrusion process. Anionic ringopening polymerization was performed in an intermeshing corotating twin-screw extruder. We investigated the evolution of conversion of -lauryl lactam as a function of reaction time, screw speeds, different feed rates, and different screw configurations along the screw axis in a twin-screw extruder. For comparison with continuous polymerization in a twin-screw extruder, we studied polymerization in an internal mixer, which was considered a batch reactor. We found the final conversion of -lauryl lactam made in a twin-screw extruder was higher than in an internal mixer. Higher molecular weights are found at lower screw speeds and feed rates. Melt viscosities and mechanical properties of the polymers were measured. Residence time, molecular weights, and shear mixing have the main effect on the mechanical properties of products. The twin-screw extruder performance was interpreted in terms of commercial software. It was found that twin-screw extruder reaction rate was higher than those in the batch reactor and increased locally with screw speed and feed rate. © 2005 Wiley Periodicals, Inc. J Appl Polym Sci 97: [1605][1606][1607][1608][1609][1610][1611][1612][1613][1614][1615][1616][1617][1618][1619][1620] 2005

show abstract

Capillary viscometry of molten polycaprolactam

Cited by 48 publications

References 12 publications

Volume and process of care in high‐risk cancer surgery

Volume and process of care in high‐risk cancer surgery

Rheology of nanocomposites based on layered silicates and polyamide-12

Continuous polymerization of ω‐lauryl lactam in an intermeshing corotating twin‐screw extruder

Contact Info

Product

Resources

About