The cover picture by Dagmar D'hooge shows the micrographs of different ABS based mono- and hybrid nanocomposite filaments for 3D printing applications. Developing new feedstock materials for fused filament fabrication with increased properties is challenging and by designing hybrid materials, it is possible to optimize the dispersion of nanoparticles and increase the properties of the final materials. DOI: 10.1002/app.52922

CBp and CNFs filler network structure

The low-temperature plasma treatment for improvement of PVTMS gas separation propeties.

A cyclotriphosphazene-containing imidazole (CPI) hardener for epoxy resins was successfully prepared. The prepared CPI exhibits dramatically improved thermal latency toward epoxy monomers at both room temperature and 80°C. The epoxy resins cured by CPI show comparable thermal and mechanical properties compared with the epoxy resins cured by conventional imidazole hardeners.

A low viscosity amphoteric polyacrylamide (LHPAM) was synthesized by causing the polymerization and substitution reaction. The synthesis was successfully characterized by FTIR, SEM, and EDS. It is proved by TG and DSC that LHPAM has good thermal stability, and found that LHPAM has strong flocculation through ultraviolet–visible spectrophotometer. It can be found from changing time, temperature, and viscosity that LHPAM has lower viscosity than HPAM. In addition, LHPAM can reacts with Cr³⁺ to form a gel that has longer gelation time and smaller resistance coefficient than HPAM, but the final gelation strength is the same. This study expands the application of HPAM in profile control and water shutoff, which is of great significance for enhanced oil recovery.

Hydroxypropyl cellulose with phenylboronic acid moieties (PBA-HPC) generates cholesteric liquid crystals (ChLCs) in aqueous solutions. The structural color of the PBA-HPC aqueous ChLC red shifts in response to glucose addition as a result of the formation of a complex between the PBA-side groups and glucose. This system can be useful as enzyme-free colorimetric glucose sensing.

High temperature shape memory polyurethane material.

Hybrid modeling approach that combines the mechanistic modeling and machine learning is proposed to predict the melt index of a thermoplastic polymer during the polymerization process. The results of this research suggest that the prediction performance of the proposed hybrid model is greater than that of the traditional data-only machine learning model.

Surface modification of UHMWPE fibers with chlorination and polydopamine

Renewable polymers were obtained from two grape seed oil monomers using different catalysts and also in absence of them. 1Im was the most selective catalyst and using 5.0 mol% was enough to almost suppress the etherification reaction. However, using 1% or 5% of 1Im did not change significantly the polymers final properties.

A series of polyureas with reversible disulfide bonds were designed and fabricated, and the effect of chain extender content on the microstructure, mechanical properties and self-healing ability of polyurea materials was investigated. The representative PU4 sample exhibited both superior mechanical properties and excellent self-repairing properties.

Via a one-step copolymerization reaction, a kind of new morpholinyl polyimide was synthesized and characterized, and also applied in gas separation field. This morpholinyl polyimide displays outstanding properties and respectable gas separation applications. Through molecular simulation, the simulation results further confirmed the reliability of experimental data.

Fe-cage embedded PDMS mixed matrix membranes were fabricated through emulsion casting method for efficient VOCs removal. Compared with pristine PDMS membrane, the PDMS/Fe-cage-4 MMM has excellent separation performance for n-hexane and n-heptane.

Thermally exfoliated graphene (TEG)/polyurethane (PU) composite samples were prepared for application in electromagnetic interference shielding (EMIS). The composite foam with 5 wt% TEG content exhibits the highest SE. The loading of 3 wt%, TEG resulting in a compromise between SE and mechanical characteristics. The findings highlight the potential applicability of the composite for EMIS applications.