Synthesis and characterization of sterically stabilized colloidal dispersions of polypyrrole using novel tailor-made water-soluble block copolymers of narrow molecular weight distribution

Polymer ◽  
1993 ◽  
Vol 34 (7) ◽  
pp. 1561-1563 ◽  
Author(s):  
P.M. Beadle ◽  
L. Rowan ◽  
J. Mykytiuk ◽  
N.C. Billingham ◽  
S.P. Armes
Keyword(s):  
Molecular Weight ◽  
Block Copolymers ◽  
Molecular Weight Distribution ◽  
Weight Distribution ◽  
Colloidal Dispersions ◽  
Water Soluble ◽  
Synthesis And Characterization ◽  
Narrow Molecular Weight Distribution

Synthesis of Poly[Cyclotriphosphazene-Co-(4, 4'-Sulfonyldiphenol)] Microspheres Grafted by Water-Soluble Chitosan

2013 ◽  
Vol 575-576 ◽  
pp. 87-90
Author(s):  
Xiao Yan Zhang ◽  
Tong Wei Han ◽  
Qi Zhang ◽  
Jing Bo Wu
Keyword(s):  
Molecular Weight ◽  
Molecular Weight Distribution ◽  
Weight Distribution ◽  
Water Soluble ◽  
Polymerization Degree ◽  
Narrow Molecular Weight Distribution ◽  
Sem And Tem ◽  
Morphology And Structure ◽  
Efficient Route ◽  
Simple Economic

Poly [cyclotriphosphazene-co-(4, 4-sulfonyldiphenol)] microspheres grafted by water-soluble chitosan (PZSMS-g-Cs) were successfully prepared via a facile strategy. The water-soluble chitosan, which has low polymerization degree and narrow molecular weight distribution, was prepared by degradation from common macromolecular chitosan. The morphology and structure of PZSMS-g-Cs were characterized by SEM and TEM. The successful fabrication of PZSMS-g-Cs was confirmed by FTIR. The product PZSMS-g-Cs was found to have good water soluble property. The paper presents a simple, economic and efficient route to preparing functional hybrid inorganic-organic microspheres with good water soluble property.

Synthesis and Characterization of Star-Shaped Porphyrin-Cored Poly(L-lactide)

2011 ◽  
Vol 239-242 ◽  
pp. 1703-1706 ◽  
Author(s):  
Xiao Hui Dai ◽  
Wei Liu ◽  
Ya Fei Huang ◽  
Chang Ming Dong
Keyword(s):  
Molecular Weight ◽  
Photodynamic Therapy ◽  
Molecular Weight Distribution ◽  
Weight Distribution ◽  
Molar Ratio ◽  
Synthesis And Characterization ◽  
Porphyrin Core

Star-shaped porphyrin-cored poly(L-lactide) (SPPLLA) was synthesized using a tetra-hydroxyethyl terminated porphyrin as a core initiator and 4-(Dimethylamino)pyridine (DMAP) as a catalyst in THF at 50 °C. The molecular weight of as-synthesized polymer were measured by GPC and1HNMR. It was found that the molecular weight of SPPLLA could be adjusted linearly by controlling the molar ratio of L-lactide to porphyrin core initiator, and the molecular weight distribution was reasonably narrow. Furthermore, SPPLLA polymers showed similar UV-vis spectra compared with porphyrin core initiator. Consequently, this will provide potentially porphyrin-cored poly(L-lactide) for photodynamic therapy.

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