scholarly journals Renewable polymers: Synthesis and characterization of poly(levulinic acid-pentaerythritol)

2018 ◽  
Vol 56 (9) ◽  
pp. 955-958 ◽  
Author(s):  
Ananda S. Amarasekara ◽  
Uyen Ha ◽  
Nnaemeka C. Okorie
Keyword(s):  
Levulinic Acid ◽  
Synthesis And Characterization ◽  
Renewable Polymers

scholarly journals Renewable Polymers: Synthesis and Characterization of Poly(4-ketopimelic acid-glycerol)

2017 ◽  
Vol 5 (1) ◽  
pp. 62-66 ◽  
Author(s):  
Ananda S. Amarasekara ◽  
Muhammad A. Hasan ◽  
Eve Larkin
Keyword(s):  
Synthesis And Characterization ◽  
Renewable Polymers

Synthesis and Characterization of Novel Polyurethanes Based on N,N'-1,2-Ethanediylbis-(4-Hydroxy-Pentanamide) and 4-Hydroxy-N-(2-Hydroxyethyl)-Pentanamide

2011 ◽  
Vol 277 ◽  
pp. 112-119 ◽  
Author(s):  
Mochamad Chalid
Keyword(s):  
Functional Groups ◽  
Elemental Analysis ◽  
Levulinic Acid ◽  
Synthesis And Characterization ◽  
H Nmr ◽  
Backbone Structure ◽  
C Nmr

As diols, N,N'-1,2-ethanediylbis-(4-hydroxy-pentanamide) (1) and 4-hydroxy-N-(2-hydroxyethyl)-pentanamide (2)) are versatile precursors for the manufacture of bio-polymers. Polymer design, by exploiting the variation in structure of both diol and di-isocyanate monomers, such as backbone structure and presence of functional groups, appears to be a promising biopolymer engineering pathway to synthesize polyurethanes. Both diols (1) and (2) were then polymerized by reaction with aliphatic and aromatic di-isocyanates at 140 °C in (N,N-dimethylacetamide (DMA) solvents using triethylamine (TEA) catalysts, to obtain novel polyurethanes. The products were characterized by FTIR, 1H-NMR, 13C-NMR, and Elemental Analysis. This working has created a new chance to synthesis bio-polyurethanes based on levulinic acid, as one of biomass compounds

Synthesis and Characterization of the Three Dicyclopentapyrenes

1996 ◽  
Vol 61 (10) ◽  
pp. 3572-3572
Author(s):  
Lawrence T. Scott ◽  
Atena Necula
Keyword(s):  
Synthesis And Characterization

Synthesis and characterization of TiN / Ti / AISI 410 coatings

2018 ◽  
Vol 2 (1) ◽  
pp. 7
Author(s):  
S Chirino ◽  
Jaime Diaz ◽  
N Monteblanco ◽  
E Valderrama
Keyword(s):  
Synthesis And Characterization ◽  
Photoemission Spectroscopy ◽  
X Ray Diffraction ◽  
X Ray ◽  
Columnar Grains ◽  
Tin Thin Films ◽  
Steel Aisi ◽  
Interacting Surfaces ◽  
Stainless Steel Aisi

The synthesis and characterization of Ti and TiN thin films of different thicknesses was carried out on a martensitic stainless steel AISI 410 substrate used for tool manufacturing. The mechanical parameters between the interacting surfaces such as thickness, adhesion and hardness were measured. By means of the scanning electron microscope (SEM) the superficial morphology of the Ti/TiN interface was observed, finding that the growth was of columnar grains and by means of EDAX the existence of titanium was verified.  Using X-ray diffraction (XRD) it was possible to observe the presence of residual stresses (~ -3.1 GPa) due to the different crystalline phases in the coating. Under X-ray photoemission spectroscopy (XPS) it was possible to observe the molecular chemical composition of the coating surface, being Ti-N, Ti-N-O and Ti-O the predominant ones.

Synthesis and characterization of zeolite-encapsulated porphyrins

2009 ◽  
Author(s):  
Marziye Javaheri Kachousangi ◽  
Rahmatollah Rahimi ◽  
Mohamad Mehdi Kashani-Motlagh
Keyword(s):  
Synthesis And Characterization
Sign in / Sign up

Export Citation Format

Share Document