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Preparing a pseudo-solid by the reinforcement of a polydentate thioether using silver nanoparticles

Title data

Pletsch, Holger ; Greiner, Andreas ; Agarwal, Seema:
Preparing a pseudo-solid by the reinforcement of a polydentate thioether using silver nanoparticles.
In: Nanoscale. Vol. 7 (2015) Issue 5 . - pp. 1977-1983.
ISSN 2040-3372
DOI: https://doi.org/10.1039/C4NR06834C

Official URL: Volltext

Project information

Project financing: Deutsche Forschungsgemeinschaft

Abstract in another language

The design of networks from polymers and noble metal nanoparticles requires thorough control over topological polymer-particle arrangements. This study explores the interaction between a linear polydentate poly(propylene sulfide) (PPrS) ligand and silver nanoparticles (AgNPs) with an aim to study its effect on mechanical and viscoelastic properties. Very low amounts (0.30 vol%) of silver nanoparticles lead to significant mechanical reinforcement of PPrS, yielding viscoelastic properties of an unfastened network with solid-like elastic responses on mechanical stimulation. The materials are made by ring-opening anionic polymerization of propylene sulfide to yield high molar mass PPrS with a total of 593 thioether functionalities per chain, followed by a simple in situ "grafting to" method to homogeneously incorporate AgNPs into the polymer matrix. From investigations on the chain dynamics using dynamic rheology it is concluded that well-dispersed AgNPs impose additional topological constraints on the polymer chains. Calculations of the statistical interparticle distances support a tele-bridging polymer-particle arrangement.

Further data

Item Type: Article in a journal
Refereed: Yes
Keywords: GOLD NANOPARTICLES; POLYMER NANOCOMPOSITES; SILICA; AGGREGATION; ELASTOMERS; DYNAMICS; RHEOLOGY; BEHAVIOR; SURFACE; DESIGN
Institutions of the University: Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Chair Macromolecular Chemistry II > Chair Macromolecular Chemistry II - Univ.-Prof. Dr. Andreas Greiner
Faculties
Faculties > Faculty of Biology, Chemistry and Earth Sciences
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Chair Macromolecular Chemistry II
Result of work at the UBT: Yes
DDC Subjects: 500 Science > 500 Natural sciences
500 Science > 540 Chemistry
Date Deposited: 10 Mar 2015 11:48
Last Modified: 10 Mar 2015 11:48
URI: https://eref.uni-bayreuth.de/id/eprint/7995