scholarly journals Synthesis and Characterization of Novel Water Soluble Starch Tartarate Nanoparticles

2012 ◽  
Vol 2012 ◽  
pp. 1-5 ◽  
Author(s):  
Suk Fun Chin ◽  
Suh Cem Pang ◽  
Lih Shan Lim
Keyword(s):  
Tartaric Acid ◽  
Soluble Starch ◽  
Water Soluble ◽  
Synthesis And Characterization ◽  
Esterification Reaction ◽  
Particle Sizes ◽  
Sago Starch ◽  
Synthesis Conditions ◽  
Metroxylon Sagu

Starch tartarate nanoparticles were prepared by esterification reaction between native sago starch (Metroxylon sagu) and tartaric acid using dimethyl sulphoxide (DMSO) as a solvent and 2-dimethylamino pyridine (DMAP) as a catalyst at 100°C. The substitution of tartaric acid onto native sago starch was confirmed by the FTIR spectra which showed the presence of carbonyl group absorption band of tartarate ester. The solubility of the as-synthesized starch tartarate nanoparticles was observed to increase linearly with increase in the degrees of substitution. Under optimized synthesis conditions, starch tartarate nanoparticles of mean particle sizes which ranged from 200 nm to 300 nm were produced.

Synthesis and Characterization of Water-Soluble Starch-Acrylamide Graft Copolymers

1986 ◽  
Vol 23 (4) ◽  
pp. 415-436 ◽  
Author(s):  
H. Pledger ◽  
T. S. Young ◽  
G-S. Wu ◽  
G. B. Butler ◽  
T. E. Hogen-esch
Keyword(s):  
Graft Copolymers ◽  
Soluble Starch ◽  
Water Soluble ◽  
Synthesis And Characterization

Synthesis and characterization of silver nanoparticles using water-soluble starch and its antibacterial activity onStaphylococcus aureus

2013 ◽  
Vol 65 (11-12) ◽  
pp. 931-937 ◽  
Author(s):  
Germán Ayala Valencia ◽  
Luci Cristina de Oliveira Vercik ◽  
Rosana Ferrari ◽  
Andrés Vercik
Keyword(s):  
Silver Nanoparticles ◽  
Antibacterial Activity ◽  
Soluble Starch ◽  
Water Soluble ◽  
Synthesis And Characterization

scholarly journals Semi-Crystalline Hydrophobic Polyamidoamines: A New Family of Technological Materials?

Polymers ◽  
2021 ◽  
Vol 13 (7) ◽  
pp. 1018
Author(s):  
Massimo Marcioni ◽  
Jenny Alongi ◽  
Elisabetta Ranucci ◽  
Mario Malinconico ◽  
Paola Laurienzo ◽  
...  
Keyword(s):  
Maximum Stress ◽  
Water Resistance ◽  
Prolonged Exposure ◽  
Water Soluble ◽  
Synthesis And Characterization ◽  
Molecular Weights ◽  
New Family ◽  
Methylene Groups ◽  
Methane Flame

The hitherto known polyamidoamines (PAAs) are not suitable as structural materials because they are usually water-soluble or swellable in water. This paper deals with the synthesis and characterization of semi-crystalline hydrophobic PAAs (H-PAAs) by combining different bis-sec-amines with bis-acrylamides obtained from C6–C12 bis-prim-amines. H-PAAs were initially obtained in a solution of benzyl alcohol, a solvent suitable for both monomers and polymers. Their number average molecular weights, M¯n, which were determined with 1H-NMR by evaluating the percentage of their terminal units, varied from 6000 to >10,000. The solubility, thermal properties, ignitability and water resistance of H-PAAs were determined. They were soluble in organic solvents, semi-crystalline and thermally stable. The most promising ones were also prepared using a bulk process, which has never been previously reported for PAA synthesis. In the form of films, these H-PAAs were apparently unaffected by water. The films underwent tensile and wettability tests. They showed similar Young moduli (260–263 MPa), whereas the maximum stress and the stress at break depended on the number of methylene groups of the starting bis-acrylamides. Their wettability was somewhat higher than that of common Nylons. Interestingly, none of the H-PAAs considered, either as films or powders, ignited after prolonged exposure to a methane flame.

Synthesis and Characterization of Water-Soluble Monolayer-Protected Gold Nanoparticles

2011 ◽  
Vol 415-417 ◽  
pp. 617-620 ◽  
Author(s):  
Yan Su ◽  
Ying Yun Lin ◽  
Yu Li Fu ◽  
Fan Qian ◽  
Xiu Pei Yang ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Particle Size ◽  
Gold Nanoparticles ◽  
Average Particle Size ◽  
Water Soluble ◽  
Synthesis And Characterization ◽  
Average Particle ◽  
Transmission Electron

Water-soluble gold nanoparticles (AuNPs) were prepared using 2-mercapto-4-methyl-5- thiazoleacetic acid (MMTA) as a stabilizing agent and sodium borohydride (NaBH4) as a reducing agent. The AuNPs product was analyzed by transmission electron microscopy (TEM), UV-vis absorption spectroscopy and Fourier transform infrared spectroscopy (FTIR). The TEM image shows that the particles were well-dispersed and their average particle size is about 5 nm. The UV-vis absorption and FTIR spectra confirm that the MMTA-AuNPs was stabilized by the carboxylate ions present on the surface of the AuNPs.

Synthesis and characterization of a new water-soluble endohedral metallofullerene for MRI contrast agents

Carbon ◽  
2006 ◽  
Vol 44 (3) ◽  
pp. 496-500 ◽  
Author(s):  
Chun-Ying Shu ◽  
Li-Hua Gan ◽  
Chun-Ru Wang ◽  
Xin-long Pei ◽  
Hong-bin Han
Keyword(s):  
Contrast Agents ◽  
Mri Contrast Agents ◽  
Water Soluble ◽  
Synthesis And Characterization ◽  
Mri Contrast ◽  
Endohedral Metallofullerene
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