Synthesis and Characterization of Branched Water-Soluble Homopolymers and Diblock Copolymers Using Group Transfer Polymerization

2005 ◽  
Vol 38 (12) ◽  
pp. 4977-4982 ◽  
Author(s):  
V. Bütün ◽  
I. Bannister ◽  
N. C. Billingham ◽  
D. C. Sherrington ◽  
S. P. Armes
Keyword(s):  
Diblock Copolymers ◽  
Water Soluble ◽  
Synthesis And Characterization ◽  
Group Transfer

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 well-defined thermo- and light-responsive diblock copolymers by atom transfer radical polymerization and click chemistry

2011 ◽  
Vol 2 (9) ◽  
pp. 2068 ◽  
Author(s):  
Xiangdong Tao ◽  
Zhengguo Gao ◽  
Toshifumi Satoh ◽  
Yuan Cui ◽  
Toyoji Kakuchi ◽  
...  
Keyword(s):  
Atom Transfer Radical Polymerization ◽  
Click Chemistry ◽  
Radical Polymerization ◽  
Diblock Copolymers ◽  
Synthesis And Characterization ◽  
Atom Transfer

Synthesis and characterization of diblock copolymers based on crystallizable poly(ε-caprolactone) and mesogen-jacketed liquid crystalline polymer block

Polymer ◽  
2005 ◽  
Vol 46 (14) ◽  
pp. 5396-5405 ◽  
Author(s):  
Yong-Feng Zhao ◽  
Xinghe Fan ◽  
Xiaofang Chen ◽  
Xinhua Wan ◽  
Qi-Feng Zhou
Keyword(s):  
Liquid Crystalline Polymer ◽  
Liquid Crystalline ◽  
Diblock Copolymers ◽  
Crystalline Polymer ◽  
Synthesis And Characterization ◽  
Polymer Block

scholarly journals Synthesis and characterization of water-soluble CdSe nanoparticles capped by AOT

2013 ◽  
Vol 31 (9) ◽  
pp. 1284-1289 ◽  
Author(s):  
Yan-ming Chen ◽  
Xiao-bo Nie
Keyword(s):  
Cdse Nanoparticles ◽  
Water Soluble ◽  
Synthesis And Characterization

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

Synthesis and characterization of a polymeric, water-soluble chelator for Fe(III)

1983 ◽  
Vol 21 (5) ◽  
pp. 381-387 ◽  
Author(s):  
M. I. Dawson ◽  
P. D. Hobbs ◽  
D. J. Dawson
Keyword(s):  
Water Soluble ◽  
Synthesis And Characterization
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