star polymer

star polymer

[′stär ¦päl·ə·mər]
(organic chemistry)
A macromolecule having a small core of molecules (branch point) with branches radiating from the core.
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Bezgin, Synthesis and characterization of lactone functional macromonomers by end group deactivation and their use in miktoarm star polymer, Open of J of Chem., 2, 42 (2012).
Synthesis of Star Polymer Precursors and Star Polymer-Drug Conjugates.
From the data generated, it is possible to calculate the degree of branching as a function of MW, and consequently the number of arms of each star polymer, to securely identify the species present.
Consider a star polymer with looping branches as shown in Fig.
(35.) Xu, L, Yu, X, Shi, T, An, L, "Dewetting of Linear Polymer/ Star Polymer Blend Film." Macromolecules, 41 21-24 (2007)
Determination of zinc content in ZnPc star polymer was achieved using a double beam flame atomic absorption, Agilent 240FS equipped with cross flow nebulizer after decomposition of the samples by heating in nitric acid till bleaching of the dye.
The SBS [poly(styrene-b-butadiene-b-styrene)] used as the precursor of SBEBS is a star polymer with four equivalent diblock arms of poly(styrene-6-butadiene) emanating from a silicon-based core with poly(styrene)-b free-ends; it is considered a triblock because the poly(styrene)-b blocks flank a central poly(butadiene)-b block.
developed multi-armed star polymer complexes for administrating drugs with high doses.
Strandman et al., "Synthesis and rheological properties of an associative star polymer in aqueous solutions," Polymer, vol.
2:00-2:30 pm -- New Generation of Star Polymer Additives for VOC-free Universal Pigment Concentrates--Janos Hajas, Frank Kother, and John Du, BYK-Chemie GmbH, Wesel, Germany, and BYK-Chemie USA, Wallingford, CT
The analysis of reported solution viscosity versus molecular weight data in the literature also suggests that intrinsic viscosities decrease as the functionality of the star polymer increases (at constant molar mass).
Regarding the use of star polymers in UV-cured systems, our group has recently studied the cationic photopolymerization of a commercially available cycloaliphatic epoxy resin in the presence of a star polymer made of a hyperbranched aromatic-aliphatic core and poly(ethylene glycol) arms (15).