Successive Synthesis of Well-Defined Star-Branched Polymers by “Convergent” Iterative Methodology Using Core-Functionalized 3-Arm Star-Branched Polymer and a Specially Designed 1,1-Diphenylethylene Derivative

2010 ◽  
Vol 296 (1) ◽  
pp. 53-62 ◽  
Author(s):  
Tomoya Higashihara ◽  
Kyoichi Inoue ◽  
Akira Hirao
Keyword(s):  
Branched Polymers ◽  
Branched Polymer

scholarly journals The MATCHIT Automaton: Exploiting Compartmentalization for the Synthesis of Branched Polymers

2013 ◽  
Vol 2013 ◽  
pp. 1-8 ◽  
Author(s):  
Mathias S. Weyland ◽  
Harold Fellermann ◽  
Maik Hadorn ◽  
Daniel Sorek ◽  
Doron Lancet ◽  
...  
Keyword(s):  
Endoplasmic Reticulum ◽  
Golgi Apparatus ◽  
Linear Time ◽  
Optimal Path ◽  
Theoretical Framework ◽  
Branched Polymers ◽  
Branched Polymer ◽  
Maximal Yield ◽  
Polymer Reactions ◽  
In Cells

We propose an automaton, a theoretical framework that demonstrates how to improve the yield of the synthesis of branched chemical polymer reactions. This is achieved by separating substeps of the path of synthesis into compartments. We use chemical containers (chemtainers) to carry the substances through a sequence of fixed successive compartments. We describe the automaton in mathematical terms and show how it can be configured automatically in order to synthesize a given branched polymer target. The algorithm we present finds an optimal path of synthesis in linear time. We discuss how the automaton models compartmentalized structures found in cells, such as the endoplasmic reticulum and the Golgi apparatus, and we show how this compartmentalization can be exploited for the synthesis of branched polymers such as oligosaccharides. Lastly, we show examples of artificial branched polymers and discuss how the automaton can be configured to synthesize them with maximal yield.

Modeling the Rheology of Commercial Long Chain Branched Polymer Melts

2003 ◽  
Vol 804 ◽  
Author(s):  
Seung Joon Park ◽  
Ronald G. Larson
Keyword(s):  
Experimental Data ◽  
Hierarchical Model ◽  
Polymer Melts ◽  
Quantitative Agreement ◽  
Branched Polymers ◽  
Linear Polymers ◽  
Branched Polymer ◽  
Long Chain Branching ◽  
Wide Range ◽  
Long Chain

ABSTRACTThe predictions of a general “hierarchical model” for the rheology of general mixtures of linear and branched polymers are compared to experimental data for well-defined long-chain branched polymers. For a wide range of branched polymer melts, which include star-linear blends, H-polymers, and comb polymers, the predictions of the model agree well with experimental data. We apply the hierarchical model to metallocene-catalyzed polyethylenes (mPEs), in which the branched structures are generated by a Monte Carlo method based on the known reaction kinetics. The hierarchical model captures the shape of the curves of viscoelastic moduli vs. frequency of mPEs well and predicts accurately the effect of long chain branching on the linear viscoelastic properties. The quantitative agreement of the hierarchical model prediction with experimental data of well-defined long-chain branched polymers and mPEs shows that information on branching structure could be inferred from rheological measurements on combinatorial sets of mixtures of an unknown branched with different combinations of linear polymers.

scholarly journals Smart branched polymer drug conjugates as nano-sized drug delivery systems

2015 ◽  
Vol 3 (10) ◽  
pp. 1321-1334 ◽  
Author(s):  
A. Duro-Castano ◽  
J. Movellan ◽  
M. J. Vicent
Keyword(s):  
Drug Delivery ◽  
Drug Delivery Systems ◽  
Delivery Systems ◽  
Branched Polymers ◽  
Branched Polymer ◽  
Drug Conjugates ◽  
Polymer Drug Conjugates

Branched polymers own special properties derived from their intrinsic characteristics. These properties make them ideal candidates to be used as carriers for an improved generation of polymer-drug conjugates.

scholarly journals Mucus-responsive functionalized emulsions: design, synthesis and study of novel branched polymers as functional emulsifiers

RSC Advances ◽  
2020 ◽  
Vol 10 (51) ◽  
pp. 30463-30475 ◽  
Author(s):  
Stephanie E. Edwards ◽  
Sean Flynn ◽  
James J. Hobson ◽  
Pierre Chambon ◽  
Helen Cauldbeck ◽  
...  
Keyword(s):  
Emulsion Stability ◽  
Branched Polymers ◽  
Design Synthesis ◽  
Branched Polymer

Mucoadhesion and mucus-sensitive materials have many applications. Redundant chain-ends within branched polymer emulsifiers have been functionalized with thiols, without compromising emulsion stability, to create mucus-interacting emulsions.

scholarly journals A hyper-branched polymer tunes the size and enhances the fluorescent properties of aggregation-induced emission nanoparticles

2020 ◽  
Vol 2 (2) ◽  
pp. 633-641 ◽  
Author(s):  
Javad Tavakoli ◽  
Nikita Joseph ◽  
Colin L. Raston ◽  
Youhong Tang
Keyword(s):  
Hydrogen Bonds ◽  
Branched Polymers ◽  
Effective Strategy ◽  
Fluorescent Properties ◽  
Branched Polymer ◽  
Aggregation Induced Emission ◽  
Interaction Approach

The host–guest interaction approach, specifically via the formation of hydrogen bonds, is an effective strategy for preparing luminescent hyper-branched polymers.

Experimental structure factor of solutions of randomly branched polymers

1990 ◽  
Vol 51 (20) ◽  
pp. 2373-2385 ◽  
Author(s):  
F. Schosseler ◽  
M. Daoud ◽  
L. Leibler
Keyword(s):  
Structure Factor ◽  
Branched Polymers ◽  
Experimental Structure
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