The microstructure of the polyelectrolyte solution at bulk and sur/interface can be designed through the monomer sequence and surface polarization, thereby regulating the macroscopic properties. Here, we focus on the powerful tools including physics-driven simulations, theory-driven analytical methods, and data-driven machine learning approaches for constructing the structure-properties relationships of sequence-defined polyelectrolytes.

4D bioprinting inherits the precision of 3D bioprinting but combines with the capabilities of post-fabrication transformation through smart materials that can change their physical or chemical properties by the introduction of some external triggers such as temperature, electricity, magnetic field, pH, humidity, light, ions, reactive oxygen species, and molecules.

Bio-based electrical epoxy resin with intrinsically high thermal conductivity, high breakdown strength and low dielectric loss promotes the green and environmental-friendly transformation of electric power equipment to achieve sustainable development.

In this study, a crosslinked polydimethylsiloxane (PDMS) elastomer was successfully synthesized via a dynamic Knoevenagel condensation reaction. The obtained material exhibits good self-healing, reprocessability, chemical recyclability, and adhesion performance.

A series of optically active poly[(S)-2-ethynyl pyrrolidine)] derivatives with secondary amine groups were synthesized as chiral stationary phases. The secondary amine groups could form selective hydrogen bonds with racemates and increase the energy difference between the diastereomers formed by racemates and chiral stationary phases during HPLC enantioseparation.

Latex-dipped films prepared using sulfur vulcanization with different systems exhibit varying mechanical properties. The efficient vulcanization (EV) system produces a more rigid film compared to the conventional vulcanization (CV) system. The Young's modulus of sectioned pre-vulcanized CNR film showed a uniform distribution and increased as sulfur content increased.

Some manganese and nickel pyridyl-imine complexes are synthesized, characterized and used in the polymerization of butadiene, obtaining predominantly 1,2 and exclusively cis-1,4 polymers, respectively.It should be underlined that practically nothing has ever been reported in the literature on manganese-based catalysts for the stereospecific polymerization of conjugated dienes.

The migration of the two commonly used acid scavengers, calcium stearate and zinc stearate, from the plates of a Z-N polypropylene into water during autoclaving were comparatively investigated. It was found that these two acid scavengers exhibited significantly different migration behaviors.

Morphology and end-used properties of linear polypropylene (L-PP) can be tailored via incorporation of minor portion of long-chain branched polypropylene (LCB-PP) and/or specific β-nucleating agent. Important role plays also processing technique and conditions. Nucleating agent has minor effect in LCB-PP and blends as compared to L-PP.

This study employs an organoboron catalyst to synthesize poly(chloropropylene carbonate) (PCPC) on a hundred-gram scale via copolymerization of epichlorohydrin and CO₂. The resulting material exhibits flame retardant properties, achieving UL-94 V-0 and LOI 29.1%. Moreover, we have conducted a comprehensive investigation into the flame retardant mechanism. The incorporation of 1 wt% PCPC into BPA-PC has been demonstrated to enhance flame retardancy from V-2 to V-0, thereby expanding the potential applications of CO₂-based polymers in flame retardants.

New phase-inversion membranes based on polyamide-imides containing hydroxyl groups in the diamine component of the repeating unit are studied. The changes in the morphology of membranes depending on the quality of the precipitant used for wet formation, as well as on the number of hydroxyl groups in macromolecules are considered.

The simulation results demonstrate that amphiphilic asymmetric brush copolymers can self-assemble into various morphologies. Channelized micelles are generated by the fusion of cylindrical vesicles and spherical vesicles, and the copolymer structure, concentration and interaction parameters have great influence on the morphology of their internal solvophilic channels.

The anisotropic structure endows the HPAN/rGO composite aerogel with anisotropic mechanical and thermal-insulation properties. In addition, the composite aerogels exhibit good flame retardancy. Therefore, the HPAN/rGO composite aerogels with ultralight, porous, good thermal stability, and flame retardancy have broad application prospects for thermal insulation applications in extremely harsh environments.

Polyamide 1012 (PA1012) can be dissolved in mixed solvents due to polar segment and non-polar segment and membranes are prepared by using mixed ‘non-solvents’ evaporation induced phase separation (MNEIPS) within 60 s. The morphology of porous PA1012 films depends on solution concentration, solvent ratio and solvent evaporation rate.

Fluorinated monodisperse microporous microspheres with superhydrophobicity can be fabricated by one-step approach and the fluorinated microspheres column achieves efficient separation of the mixture of target compounds.

We first proposed and prepared a series of SIQSSEs based on the boroxine COF-5. Both COF-N-S-TFSILi and COF-N-S-SPSILi possessed high lithium transference numbers (LTNs) and high ionic conductivities at room temperature simultaneously. The SIQSSE COF-N-S-TFSILi also achieved an ideal battery performance.

A morphology transition mode is revealed in UHMWPE stretched at 120 °C: moving from the slightly deformed region to the necked region, the morphology changes from small spherulites to a mixture of transcrystalline and enlarged spherulites, and finally to pure transcrystalline.

The uniformly dispersed pVTPR acts as a filler in the rubber matrix and greatly extends the path of N₂ and O₂ through the composites, which gives the composites excellent gas barrier properties. As the pVTPR cross-linking density increased, the gas-barrier properties of the composites gradually improved.

Three carbon-based nanoparticles with different geometric shape were incorporated into epoxy to fabricate nanocomposite coatings. Spherical nanodiamonds (NDs), cylindrical carbon nanotubes (CNTs), and planar graphenes (GNPs) exhibited various microstructural morphologies and dispersion characteristics within the epoxy matrix, leading to variations in several physical and mechanical properties of nanocomposite coatings.

The polymer with large activity forms stable compact spiral with directional rotation at the steady state. The formation of the stable compact spiral is a two-step relaxation process, where the polymer first forms a metastable swelling quasi spiral and then transforms into the stable compacted spiral near the wall of the cavity.

NP-induced membrane fusion behaviors are systematically investigated by performing extensive CG-MD simulations. The vesicle-bilayer fusion induced by a hydrophobic NP is an intricately state-wise process. Moreover, NP properties (size, hydrophobicity and hydrophilicity) have distinct effects on membrane fusion and thus the optimal NP conditions for facilitating membrane fusion are obtained.