Nylon-1313 from Brassylic Acid

Nieschlag, H. J.; Rothfus, J. A.; Sohns, V. E.; Perkins, R. Beltron

doi:10.1021/i360061a021

Cited by 35 publications

(24 citation statements)

References 9 publications

(12 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Besides, T g and mechanical properties of the copolyamides were higher than that of PA11 and PA12. In addition, compared to PA12, 14, PA10, 10, PA 10, 12, PA13, 13, PA10, 13, PA12, 13, and PA 10, 13, the PA6‐BABA/SA copolyamides have similar thermal properties and high mechanical properties, which indicate that the as synthesized PA6‐BABA/SA have excellent thermal and mechanical properties.…”

Section: Resultsmentioning

confidence: 97%

Synthesis and characterization of copolyamides derived from novel aliphatic bio‐based diamine

Rwei

Ranganathan

Chiang

et al. 2018

J of Applied Polymer Sci

View full text Add to dashboard Cite

Novel aliphatic nylon 6 (PA6) copolyamides were produced by melt polymerization reaction of our newly synthesized aliphatic bio‐based diamine monomer: N1, N6‐bis (4‐aminobutyl) adipamide (BABA). The pertinent long‐chain polyamide salt (BABA/SA) monomer was isolated as white solid, utterly characterized for the first time. The chemical structure of BABA, BABA/SA salt, and copolyamides (PA6‐BABA/SA) were investigated by 1H NMR and FTIR spectroscopy. Depending on the chemical compositions, the viscosity and molecular weight of the copolyamides were in the range of 20 275–12 652 and 2.81–2.12 dL/g. With increasing BABA/SA salt weight content in the synthesized copolyamides, their melting temperatures (Tm) and glass transition temperatures (Tg) decreased from 211.0 to 164.0 °C and 66.6 to 43.5 °C. In addition XRD results were investigated revealing all the copolyamides transferred from α‐form to γ‐form. Interestingly, the as‐synthesized all copolyamides possess nearly similar thermal stability (Td = 452.2–449.5 °C) as neat PA6. Mechanical testing data revealed that with increasing BABA/SA salt content, the elongation at break of copolyamides are increased (726.19–429.34%), while the tensile strength are decreased. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 46878.

show abstract

Section: Resultsmentioning

confidence: 97%

Synthesis and characterization of copolyamides derived from novel aliphatic bio‐based diamine

Rwei

Ranganathan

Chiang

et al. 2018

J of Applied Polymer Sci

View full text Add to dashboard Cite

show abstract

“…Similarly, PA 11 is being promoted from the same natural source. Nieschlag et al [40] prepared PA 1313 based entirely on components derived from erucic acid oils, derived from various seed plants. Evonik Industries [41] manufacture PA 610 polymer (Vestamide 1 Terra HS) of partially natural source and also a PA 1010 polymer (Vestamid 1 Terra DS) with both monomers derived from castor oil.…”

Section: Polyamides From Straight-chain Aliphatic Monomersmentioning

confidence: 99%

Polyamides – Still Strong After Seventy Years

Marchildon¹

2010

Macro Reaction Engineering

358

141

View full text Add to dashboard Cite

Polyamides are a subject of enduring interest because of their variety, their complex internal structures, their commercial importance and versatility, and their various chemistries of preparation and of long‐term use. The present review introduces these polymers and then discusses the first of the above aspects, namely the variety of the polyamides. Here, together, the full family is presented, classified conveniently according to the types and combinations of monomers from which they are constructed. magnified image

show abstract

“…9‐hydroxynonanoic acid, prepared from oleic acid, can be considered as a potential starting precursor for aliphatic polynonanolactone via a 10‐membered nonanolactone cyclic monomer. The synthetic route for producing nonanolactone from oleic acid is similar to that used in the preparation of various Nylon monomers from renewable resources 22–24. Previous studies show that dilactone (1,11‐dioxacycloicosane‐2,12‐dione) was exclusively formed with a very low yield of monolactone;25, 26 however, there are a few reports which explains the synthesis of monolactone with comparatively high yield 27.…”

Section: Introductionmentioning

confidence: 99%

Hypoxia‐regulated protein expression, patient characteristics, and preoperative imaging as predictors of survival in adults with glioblastoma multiforme

Flynn

Wang

Gillespie

et al. 2008

Cancer

117

View full text Add to dashboard Cite

BACKGROUND.Regions of hypoxia within glioblastoma multiforme (GBM) are common and may influence a tumor's aggressiveness, response to treatment, and the patient's overall survival. In this study, the authors examined 4 markers of hypoxia (hypoxia‐inducible factor 1 [HIF‐1α], glucose transporter 1 [GLUT‐1], vascular endothelial growth factor [VEGF], and carbonic anhydrase 9 [CA IX]), cellular proliferation and microvascular density (MVD) indices, extent of surgical resection, and preoperative imaging characteristics and compared them with the overall survival rates of adults with GBM.METHODS.In this retrospective cohort study, patients who had lower grade astrocytomas were compared with patients who had GBM to verify that the methods used could establish differences between tumor grades. By using preoperative imaging, the amount of necrosis was established versus the overall tumor area. The authors also compared preoperative images with postoperative images to define the amount of tumor resected; and they compared molecular markers, proliferation, MVD, and imaging studies with survival among patients who had GBM.RESULTS.The hypoxia‐regulated molecules (HRMs) and indices for MVD and cellular proliferation were associated significantly with tumor grade. Survival was improved when ≥95% of the tumor was resected. Although the total tumor area was associated with overall survival, no differences were observed when the amount of necrosis or a tumor necrosis index (area of necrosis/area of tumor) was compared with survival. The findings indicated that GLUT‐1 and VEGF were correlated with survival after controlling for age.CONCLUSIONS.Tumor grade was differentiated with HRMs, MVD, and proliferation, but only GLUT‐1 predicted survival in this group of patients with GBM. The results suggested that GLUT‐1 may be an important independent prognostic indicator. Cancer 2008. © 2008 American Cancer Society.

show abstract

Nylon-1313 from Brassylic Acid

Abstract: The mention of firm names or trade products does not imply that they are endorsed or recommended by the Department of Agriculture over other firms or similar products not mentioned.

Cited by 35 publications

References 9 publications

Synthesis and characterization of copolyamides derived from novel aliphatic bio‐based diamine

Synthesis and characterization of copolyamides derived from novel aliphatic bio‐based diamine

Polyamides – Still Strong After Seventy Years

Hypoxia‐regulated protein expression, patient characteristics, and preoperative imaging as predictors of survival in adults with glioblastoma multiforme

Contact Info

Product

Resources

About