Intermatrix synthesis: easy technique permitting preparation of polymer-stabilized nanoparticles with desired composition and structure

Abstract

The synthesis of polymer-stabilized nanoparticles (PSNPs) can be successfully carried out using intermatrix synthesis (IMS) technique, which consists in sequential loading of the functional groups of a polymer with the desired metal ions followed by nanoparticles (NPs) formation stage. After each metal-loading-NPs-formation cycle, the functional groups of the polymer appear to be regenerated. This allows for repeating the cycles to increase the NPs content or to obtain NPs with different structures and compositions (e.g. core-shell or core-sandwich). This article reports the results on the further development of the IMS technique. The formation of NPs has been shown to proceed by not only the metal reduction reaction (e.g. Cu0-NPs) but also by the precipitation reaction resulting in the IMS of PSNPs of metal salts (e.g. CuS-NPs).

In-vitro evaluation of antibacterial and antibiofilm efficiency of radiation-modified polyurethane–ZnO nanocomposite to be used as a self-disinfecting catheter

“…Guo et al, 2019;Ruiz et al, 2011), they have been prepared for combating resistant bacteria (Yu et al, 2014). In the current study, the in-situ intermatrix synthesis technique was employed to prepare PU-based nanocomposite; this approach was reported to produce highly stable nanocomposites with long durability, up to a year, without any change in the metal particle size (Ruiz et al, 2011). Furthermore, ZnO NPs were developed within cefepime-modified graft polymer using the above-mentioned technique.…”

“…Modification of PU-g-(AAc-co-GMA) graft copolymer with ZnO nanoparticles and the preparation of nanocomposite Nanocomposites were prepared using the wet insitu intermatrix synthesis method (Y. Guo et al, 2019;Ruiz, Macanás, Muñoz, & Muraviev, 2011). Briefly, ZnO NPs were prepared within PU-g-(AAc-co-GMA) using ZnCl 2 (El-Gomhouria Co., Egypt) and NaOH as precursors.…”

Intermatrix Synthesis as a rapid, inexpensive and reproducible methodology for the in situ functionalization of nanostructured surfaces with quantum dots

“…Regarding this fact, Intermatrix Synthesis technique (IMS) is a simple, fast and low cost methodology for the synthesis of PMNCs. IMS is based on the ion exchange properties of the support resulting in the preparation of PMNCs [11][12][13]. This procedure coupled with Donnan Exclusion Effect (DEE) offers advantage in terms of MNPs distribution in the final added value material, where the MNPs are mainly located on the matrix surface due to the difficulty of the reducing agents to penetrate deeply into the supporting matrix as result of the electrostatic repulsion [14,15].…”

Modelling of the Structure and the Required Level of Performance Properties of a Polytetrafluoroethylenecomposites for Sealing

“…To take into account the stress relaxation of the sealing element made of elastomer in the model (1), the Mooney -Rivlin constants were recalculated based on the value of the relative residual strain of 0.6; the following values were obtained [11,[15][16][17][18][19][20][21]: C10 = 781178.6 Pa; C01 = 154173.9 Pa.…”