Variation of the crosslinking density in cluster-reinforced polymers

Author(s)

Johannes Kreutzer, Xiao-Hua Qin, Christian Gorsche, Herwig Peterlik, Robert Liska, Ulrich Schubert

Abstract

Inorganic-organic hybrid materials were prepared by free radical polymerization of the clusters Zr₄O₂(methacrylate)₁₂ or Zr₄O₂(methacrylate)_12-x(pivalate)_x and 2-hydroxyethyl methacrylate. Increasing either the proportion of Zr₄O₂(methacrylate)₁₂ or varying the number of methacrylate ligands in Zr₄O₂(methacrylate)_12-x(pivalate)_x

allowed to distinguish between filler and crosslinking effects on the

polymer properties. The induction period of photopolymerization, storage

and loss modulus, swellability and glass transition temperature

depended on the crosslinking ability of the clusters, while onset of the

thermal degradation and char formation were traced back to filler

effects, i.e. the cluster proportion in the polymer. Small angle X-ray

scattering experiments showed that the clusters are homogeneously

distributed in the polymer when the proportion of Zr₄O₂(methacrylate)₁₂

was varied. The clusters increasingly agglomerated, however, when the

number of polymerizable ligands per cluster was decreased at constant

cluster loading.

Organisation(s)

Dynamics of Condensed Systems

External organisation(s)

Technische Universität Wien

Journal

Materials Today Communications

Volume

5

Pages

10-17

No. of pages

8

DOI

https://doi.org/10.1016/j.mtcomm.2015.09.001

Publication date

12-2015

Peer reviewed

Yes

Austrian Fields of Science 2012

103015 Condensed matter, 103018 Materials physics, 103009 Solid state physics

Keywords

ASJC Scopus subject areas

Mechanics of Materials, Materials Chemistry, General Materials Science

Portal url

https://ucrisportal.univie.ac.at/en/publications/7486622d-7871-4091-b6d2-6d8ff0231eaf