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Poly(l-lactic acid)/poly(oxymethylene) bulky blend is a typical system exhibiting ring-banded spherulites. In this work, however, the parallel ridges and valleys were fabricated for the first time in the blend film by the precise control of film thickness. They are named as “parallel-stripe structures” to distinguish from general “ring-banded structures”. Our results indicate that the cracks on thinner...
We have previously reported the formation of polymer/fullerene core–shell composite nanofibers (NFs) through self-assembly of functionalized conjugated block copolymers and fullerene derivatives, by cooperation of orthogonal non-covalent interactions including block copolymer phase separation, fullerene aggregation, poly(3-hexylthiophene) (P3HT) crystallization and complementary hydrogen bonding....
Polyethersulphone (PES) is an important special engineering plastic. In order to broaden its applications in automobile and sports fields etc., its mechanical properties have to be enhanced. This paper reports the effectively enhanced tensile and flexural properties of injection molded graphene oxide (GO)-coated short carbon fiber reinforced PES composites by GO coating. The GO content varies in a...
(S)-binaphthalene-based polymer sensors P-1 and P-2 could be synthesized by the polymerization of 5,5′-((2,5-dibutoxy-1,4-phenylene)bis(ethyne-2,1-diyl))bis-(2-hydroxy-3-(piperidin-1-ylmethyl) benzaldehyde (M-1) with (S)-2,2′-dimethoxy-(1,1′-binaphthalene)- 6,6′-diamine (M-2) and (S)-2,2′-dimethoxy-(1,1′-binaphthalene)-3,3′-diamine (M-3) via nucleophilic addition–elimination reaction. The fluorescence...
The static and dynamic properties of polymer chains in athermal solvents with different sizes are studied by molecular dynamics method. With increasing solvent size, the radius of gyration and the diffusion coefficient of the polymer decay fast until a critical solvent size is reached. For the polymer diffusion coefficients, this decay only depends on the solvent size; while for the radius of gyration...
By using a combinatorial screening method based on the self-consistent field theory (SCFT) for polymer systems, the micro-phase morphologies of the H-shaped (AC)B(CA) ternary block copolymer system are studied in three-dimensional (3D) space. By systematically varying the volume fractions of the components A, B, and C, six triangle phase diagrams of this H-shaped (AC)B(CA) ternary block copolymer...
Chain topology strongly affects the static and dynamic properties of polymer melts and polymers in dilute solution. For different chain architectures, such as ring and linear polymers, the molecular size and the diffusion behavior are different. To further understand the chain topology effect on the static and dynamic properties of polymers, we focus on the tadpole polymer which consists of a cyclic...
In this paper, we employ the sum-over-states formula to calculate the dynamic third-order nonlinear optical polarizabilities of three optical processes, third-harmonic generation, electric-field-induced second-harmonic generation, and degenerate four-wave mixing, at the ground state of aniline oligomers. The ground state configurations of these compounds are obtained by the geometrical optimizations...
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