Hierarchically Architected Polydopamine Modified BaTiO3@P(VDF-TrFE) Nanocomposite Fiber Mats for Flexible Piezoelectric Nanogenerators and Self-powered Sensors

Wettability Transition for Laser Textured Surfaces: A Comprehensive Review

Triboelectric nanogenerators (TENGs) with high transparency and stretchability are desired for invisible and adaptable energy harvesting and sensing. Hydrogel-based TENGs (H-TENG) have shown promis...

Enhancing the Performance of a Stretchable and Transparent Triboelectric Nanogenerator by Optimizing the Hydrogel Ionic Electrode Property

https://onlinelibrary.wiley.com/doi/pdf/10.1002/agt2.21

Recent advances in polysaccharide-based hydrogels for synthesis and applications

A Review on Fabrication Methods and Research Progress of Superhydrophobic Silicone Rubber Materials

Crystallization behavior and isothermal crystallization kinetics of polylactide/polystyrene-b-polybutadiene-b-polystyrene blends compatibilized with poly(styrene-ran-methyl acrylate)

Effective improvement in poly(bisphenol‐A carbonate) crystallinity by ionization of its polyamide‐66 heterogeneous nucleator: The role of ion‐dipole interactions

Enhancing the crystallinity and heat resistance of poly(ethylene terephthalate) using
 
 ZnCl
 2
 
 ‐ionized polyamide‐66 as a heterogeneous nucleator

A poly(methyl methacrylate)-supported Pd0 nanocatalyst was successfully prepared from solution reaction of Pd(CH3COO)2 with a copolymer acid, poly(methyl methacrylate-ran-methacrylic acid) (MMA–MAA). The reaction was carried out in a benzene/methanol mixed solvent in the dark at room temperature (∼25 °C) in the absence of a typical chemical reductant. There was coordination between the Pd0 nanoclusters and MMA–MAA, resulting in Pd0 nanoclusters being stably and uniformly dispersed in the MMA–MAA matrix, with an average particle size of ∼2.5 ± 0.5 nm. Mechanistically, it can tentatively be proposed that PMMA-ionomerization of the Pd2+ ions produces intramolecular –2COO−–Pd2+ aggregate cross-links in the solution. On swelling of the chain-segments that are covalently bound via multiple C–C bonds, the resultant elastic forces cause instantaneous dissociation at the O–Pd coordination bonds to give transient bare (i.e., uncoordinated), highly-oxidative Pd2+ ions and H+-associative carboxylate groups, both of which rapidly scavenge electrons and protons, respectively, of the active α-H atoms abstracted from the methanol molecules of the solvent to make Pd0 nanoclusters supported by the re-formed MMA–MAA. The MMA–MAA acid copolymer, without itself undergoing any permanent chemical change, serves as a mechanical activator or catalyst for the mechanochemical reduction of Pd(CH3COO)2 under mild conditions. Compared with traditional Pd/C catalysts, this Pd0 nanocatalyst exhibited more excellent catalytic efficiency and reusability in the Heck reaction between iodobenzene and styrene, and it could be easily separated. The supported Pd0 nanocatalyst prepared using this novel and simple preparation method may display high-efficiency catalytic properties for other cross coupling reactions.

/pdf/preparation-and-catalytic-properties-of-poly-methyl-58yw0rvdmo.pdf

Preparation and catalytic properties of poly(methyl methacrylate)-supported Pd0 obtained from room-temperature, dark reduction of ionic aggregates of the unstable Pd2+ solution ionomer

Small colloidal Ag0 nanoclusters successfully were prepared from solution reaction of CH3COOAg with a copolymer acid, poly(methyl methacrylate-ran-methacrylic acid) (MMA–MAA), in a methanol-containing solvent at room temperature in the dark in the absence of a typical chemical reductant. Tentatively mechanistically, slow PMMA-ionomerisation of the Ag+ ions produces intramolecular –COO−–Ag+ aggregate cross-links in the solution, which, upon swelling of the chain segments covalently bound to them, are activated by the resultant elastic forces to dissociate instantaneously at the O–Ag coordination bonds to give bare (i.e. uncoordinated), highly oxidative Ag+ ions, which are subject to reduction by the active α-H atoms of the solvent methanol to make Ag0 nanoclusters supported by the re-formed MMA–MAA; the MMA–MAA acid-copolymer, without itself undergoing any permanent chemical change, serves as a mechanical-activator or, say, catalyst for the mechanochemical reduction of CH3COOAg. This novel, facile approach may universally be extended to fabricate other transition-metal nanoclusters deposited in diverse polymeric matrices.

Preparation and optical properties of colloidal Ag0 nanoclusters from reduction of solution ionomer Ag-carboxylate ionic aggregates activated by swelling of covalently attached chain segments

Tao Hu

Papers

Crystallization behavior and isothermal crystallization kinetics of polylactide/polystyrene-b-polybutadiene-b-polystyrene blends compatibilized with poly(styrene-ran-methyl acrylate)

Effective improvement in poly(bisphenol‐A carbonate) crystallinity by ionization of its polyamide‐66 heterogeneous nucleator: The role of ion‐dipole interactions

Enhancing the crystallinity and heat resistance of poly(ethylene terephthalate) using ZnCl 2 ‐ionized polyamide‐66 as a heterogeneous nucleator

Preparation and catalytic properties of poly(methyl methacrylate)-supported Pd0 obtained from room-temperature, dark reduction of ionic aggregates of the unstable Pd2+ solution ionomer

Preparation and optical properties of colloidal Ag0 nanoclusters from reduction of solution ionomer Ag-carboxylate ionic aggregates activated by swelling of covalently attached chain segments