copolymer chain
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RSC Advances ◽  
2021 ◽  
Vol 11 (18) ◽  
pp. 10468-10478
Author(s):  
Sabina Abbrent ◽  
Andrii Mahun ◽  
Miroslava Dušková Smrčková ◽  
Libor Kobera ◽  
Rafał Konefał ◽  
...  

In situ1H NMR characterization of copolymerization reactions of various 2-oxazoline monomers at different molar ratios offers detailed insight into the build-up and composition of the polymer chains.


Langmuir ◽  
2020 ◽  
Vol 36 (46) ◽  
pp. 13872-13880
Author(s):  
Cian Cummins ◽  
Alberto Alvarez-Fernandez ◽  
Ahmed Bentaleb ◽  
Georges Hadziioannou ◽  
Virginie Ponsinet ◽  
...  

Soft Matter ◽  
2020 ◽  
Vol 16 (15) ◽  
pp. 3657-3668 ◽  
Author(s):  
Erik J. Cornel ◽  
Gregory N. Smith ◽  
Sarah E. Rogers ◽  
James E. Hallett ◽  
David J. Growney ◽  
...  

Time-resolved small-angle neutron scattering studies confirm that copolymer chain exchange occurs between sterically-stabilized diblock copolymer nanoparticles at elevated temperature.


2019 ◽  
Vol 52 (23) ◽  
pp. 9389-9397 ◽  
Author(s):  
Amy D. Goodson ◽  
Jessie E. Troxler ◽  
Maxwell S. Rick ◽  
Henry S. Ashbaugh ◽  
Julie N. L. Albert

Polymers ◽  
2019 ◽  
Vol 11 (5) ◽  
pp. 757 ◽  
Author(s):  
Daria Maltseva ◽  
Sergey Zablotskiy ◽  
Julia Martemyanova ◽  
Viktor Ivanov ◽  
Timur Shakirov ◽  
...  

The combination of flexibility and semiflexibility in a single molecule is a powerful design principle both in nature and in materials science. We present results on the conformational behavior of a single multiblock-copolymer chain, consisting of equal amounts of Flexible (F) and Semiflexible (S) blocks with different affinity to an implicit solvent. We consider a manifold of macrostates defined by two terms in the total energy: intermonomer interaction energy and stiffness energy. To obtain diagrams of states (pseudo-phase diagrams), we performed flat-histogram Monte Carlo simulations using the Stochastic Approximation Monte Carlo algorithm (SAMC). We have accumulated two-Dimensional Density of States (2D DoS) functions (defined on the 2D manifold of macrostates) for a SF-multiblock-copolymer chain of length N = 64 with block lengths b = 4, 8, 16, and 32 in two different selective solvents. In an analysis of the canonical ensemble, we calculated the heat capacity and determined its maxima and the most probable morphologies in different regions of the state diagrams. These are rich in various, non-trivial morphologies, which are formed without any specific interactions, and depend on the block length and the type of solvent selectivity (preferring S or F blocks, respectively). We compared the diagrams with those for the non-selective solvent and reveal essential changes in some cases. Additionally, we implemented microcanonical analysis in the “conformational” microcanonical ( N V U , where U is the potential energy) and the true microcanonical ( N V E , where E is the total energy) ensembles with the aim to reveal and classify pseudo-phase transitions, occurring under the change of temperature.


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