Preparation and Properties of Novel Crosslinked Polyphosphazene-Aromatic Ethers Organic–Inorganic Hybrid Microspheres

Abstract

A series of novel crosslinked polyphosphazene-aromatic ether organic–inorganic hybrid microspheres with different structures were prepared via precipitation polycondensation between hexachlorocyclotriphosphazene (HCCP) and bisphenol monomers. The bisphenol monomers have different numbers of –CF3 in the side group, which correspond to distinct oligomeric species-absorbing mechanisms. The wetting behavior of the microsphere surface was evaluated using a water contact angle (CA) measurement, which increased with the increase in the content of –CF3 in polyphosphazene. We also investigated the effects of HCCP concentration and ultrasonic power on the morphology of the microspheres.

Polyoxovanadate-Based Cyclomatrix Polyphosphazene Microspheres as Efficient Heterogeneous Catalysts for the Selective Oxidation and Desulfurization of Sulfides

“…As shown in Figure 2 A,B, the successful introduction of V 6 O 13 -PhOH to the polymeric framework can be proven by the presence of N1s signals from N–H of TBA + at 401.1 eV and P=N at 398.8 eV, as well as the O1s signals from C–O–P at 533.8 eV and V–O at 531.6 eV. Moreover, the P2p signals at 135, 134, and 132.9 eV ( Figure 2 C) can be assigned to P–Cl (I), P=N (II), and C–O–P (III), respectively, indicating that most of the phosphazenes were involved in the cross-linked framework [ 14 , 39 , 40 ]. Furthermore, as shown in Figure 2 D, the signals of V2p at 524 and 516.7 eV indicated that the valence state of V mostly retained +5, demonstrating that their redox properties were retained in the resulted HCCP-V, and enabled their potential application in the selective oxidation of sulfides.…”

Special Issue: Synthesis, Processing, Structure and Properties of Polymer Materials

“…In this Special Issue, 33 original articles have been published on various topics, including the preparation, characterization, and some examples of application of polymeric materials. This issue includes review articles [ 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 ] and research articles [ 9 , 10 , 11 , 12 , 13 , 14 , 15 , 16 , 17 , 18 , 19 , 20 , 21 , 22 , 23 , 24 , 25 , 26 , 27 , 28 , 29 , 30 , 31 , 32 , 33 ].…”

“…The scope of research articles of papers included a Special Issue is very wide. It includes papers on the synthesis and study of the properties of new thermoplastic polymers [ 9 , 10 , 11 , 12 , 13 ], obtaining of composites [ 14 , 15 , 16 ], nanocomposites [ 17 , 18 , 19 ], microspheres [ 20 , 21 ], polymeric blends [ 22 , 23 , 24 ], hydrophobic nanostructures [ 25 ], polymeric membranes [ 26 , 27 ], hydrogels [ 28 ] and others [ 29 , 30 , 31 , 32 , 33 ].…”

“…Wang’s and others’ paper [ 20 ] describes synthesis of novel crosslinked polyphosphazene-aromatic ether organic–inorganic hybrid microspheres with different structures. The materials were synthesized via precipitation polycondensation between hexachlorocyclotriphosphazene (HCCP) and bisphenol monomers.…”