The effect of B homopolymer adding on the aggregation behavior of amphiphilic coil/rod/coil BAB triblock copolymers was studied using lattice self-consistent field theory. It depends on the length of the hydrophobic rod block and copolymer concentration. Compared with the solutions, at low concentrations, homopolymer addition is favorable to the emergence of cubic and large lamellar micelles. Although it enriches the structural behavior, the rearrangement is suppressed. As rod blocks increase, the rearrangement is related to the orientationdependent diffusion and inverse diffusion processes. At relatively high concentrations, adding homopolymers promotes rearrangement. For long rod block case, the arrangements related to inverse laminarization and the cooperative growth emerges. At high concentrations, for short rod block system, homopolymer addition is advantageous to micelle rearrangement concerned with order/disorder transition, and the rearrangements in the system of intermediate length and long rod blocs are suppressed. This work aids in understanding of the growth mechanism of micelles with rigid block cores.
Amphiphilic PEG multiblock copolymers can be readily synthesized by polycondensation reactions. Their multiblock structure leads to the formation of hydrogels consisting of highly interconnected micelles. Here, we investigate as model systems copolyesters consisting of alternating hydrophobic alkyldicarboxylic acids...
Tulika Sharma, R. Biehl, M. Dulle et al.· Macromolecules· 0 citations
We use coarse-grained molecular dynamics simulations to investigate structural organization in melts of brush copolymers as a function of side-chain grafting density, backbone-side-chain miscibility, and backbone rigidity. At low grafting densities, decreasing miscibility drives microphase separation of backbones and...
Zi-Lu Wang, E. Samulski, S. S. Sheiko et al.· Macromolecules· 0 citations
Understanding the internal architecture of copolymer microgels is crucial for establishing how nanoscale polymer organization controls their stimuli-responsive behavior. Here we focus on thermoresponsive P(N-isopropylacrylamide-co-N-isopropyl-methacrylamide), P(NIPAM-co-NIPMAM), microgels with varying mole fraction of...
Jacopo Vialetto, F. Brasili, L. Tavagnacco et al.· 0 citations
The viscoelastic properties of block copolymeric rings are investigated within the framework of optimized Rouse-Zimm theory. A multiresolution bead spring model is used to depict ring block copolymers, which accounts for the variable sizes of the beads connected via different harmonic springs. The hydrodynamic interact...
Sumit Kumar, Parbati Biswas· Journal of Chemical Physics· 0 citations
Polymeric photonic microspheres with visible structural colors offer safe and vibrant alternatives to traditional toxic pigments. These materials are commonly fabricated through confined self-assembly of block copolymers (BCPs) in evaporative emulsions, which can proceed by either microphase separation or organized spo...
Mohan Zheng, Tong Liang, Zhao-Yan Sun et al.· Angewandte Chemie· 0 citations
Access to smaller phase domain dimensions requires reducing the degree of polymerization, which weakens segregation and increases the importance of strong segmental incompatibility; however, the same chemical contrast can impede direct sequential block copolymerization through differences in solvent affinity. Here, we...
Yi-Fan Tian, Xu-Le Yang, Wei-Jia Fan et al.· ACS Macro Letters· 0 citations
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