Linking Models of Polymerization and Dynamics to Predict Branched Polymer Structure and Flow

Abstract

. (2011) 'Linking models of polymerization and dynamics to predict branched polymer structure and ow. ', Science., 333 (6051). pp. 1871-1874. Further information on publisher's website:http://dx.doi.org/10.1126/science.1207060 Publisher's copyright statement: This is the author's version of the work. It is posted here by permission of the AAAS for personal use, not for redistribution. The denitive version was published in Science 333/6051, http://dx.doi.org/10.1126/science.1207060Additional information: Use policyThe full-text may be used and/or reproduced, and given to third parties in any format or medium, without prior permission or charge, for personal research or study, educational, or not-for-prot purposes provided that:• a full bibliographic reference is made to the original source • a link is made to the metadata record in DRO • the full-text is not changed in any way The full-text must not be sold in any format or medium without the formal permission of the copyright holders.Please consult the full DRO policy for further details. One of the long-standing fundamental challenges to soft matter science is the quantitative connection between molecular topology and dynamics of branched entangled polymers. The motivation arises from both the universality of the physics (1) and the experimental and

Multihydroxyl End Functional Polyethylenes: Synthesis, Bulk and Interfacial Properties of Polymer Surfactants

“…Characterization of the polymers (shown in table 1) demonstrates that the methodology is appropriate to prepare gram quantities of very well defined polyethylenes with a high degree of precisely controlled functionality.…”

“…have significant consequences for the melt rheology and solid state properties of these materials even though they are chemically very similar. 1 Despite the wide variety of bulk properties, the surface and interfacial properties tend to be relatively constant. For instance, the liquid surface tensions of linear (67 kg/mol) and branched (7kg/mol) PE are very similar at 35.7 and 34.3 mJ m -2 respectively.…”

“…We thank EPSRC for support of this work through EP/G032874/1 and STFC (UK) for provision and support of the neutron facilities at ISIS. We are grateful to Dr Mark Hodgson An initial attempt to synthesise 2OX by the Appel reaction using CBr 4 /PhP 3 as previously described, 1 was unsuccessful. During the reaction the tert butyldimethylsilyl group which was protecting the alcohol group was cleaved as observed by 1 H-NMR therefore an alternative method was used.…”

Design, Synthesis, and Self-Assembly of Polymers with Tailored Graft Distributions

“…Graft polymers display many unique properties compared to their linear analogues, such as extended chain conformations, [5][6][7][8] increased entanglement molecular weights, [9][10][11][12] and architecturedependent rheological behavior. [13][14][15][16] Recent studies have harnessed these properties in a wide variety of applications in photonics, [17][18][19] drug delivery, [20][21][22] transport, [23][24] and thermoplastics. [25][26] Continued progress in synthetic command over polymer architecture enables further studies of structure-property relationships and inspires new potential applications.…”

In Silico Molecular Design, Synthesis, Characterization, and Rheology of Dendritically Branched Polymers: Closing the Design Loop

“…Such theories form the foundation for computational modeling 8 and simulation of polymer melt processing and ultimately allow for the design of industrial polymers with specific and desirable properties. 23 Although computational modeling has been used directly for industrially relevant branched polymers, in such melts the polydispersity in molar mass and topology removes specific, identifiable, rheological features from the different levels of branching. Consequently, the use of model polymers has become the standard means for verification of molecular-based rheological models.…”