Jump to main content
Jump to site search


Synthesis and degradation of branched, photo-labile poly(acrylic acid) and polystyrene

Author affiliations

Abstract

We present the synthesis, characterization and photolytical degradation of branched photo-responsive poly(acrylic acid) and polystyrene using free radical polymerization of acrylic acid/styrene in the presence of a newly synthesized asymmetric o-nitrobenzyl-based crosslinker and different amounts of dodecanethiol (DDT) as a chain transfer agent. Thereby, an asymmetric o-nitrobenzyl-based crosslinker ((2-nitro-1,4-phenylene)bis(methylene) diacrylate) was used, as the expected degradation products can be easily analyzed. Both the crosslinker and the resulting branched polymers were decomposed by irradiation with UV-light (100 W mercury lamp, 15 mW cm−2) and their degradation products were analyzed by UV-Vis and NMR spectroscopy, size-exclusion chromatography (SEC), and electron spray ionization mass spectrometry (ESI-MS). After 90 min of irradiation, nearly 80% of the crosslinker was degraded, resulting in nearly linear polymeric decomposition products of comparable molecular weight, independent of the used comonomer. Thus, only the amount of incorporated crosslinker seems to have an influence on the decomposition products. All these results serve to better understand the structure and architecture of long-chain branched polymeric materials.

Graphical abstract: Synthesis and degradation of branched, photo-labile poly(acrylic acid) and polystyrene

Back to tab navigation

Supplementary files

Publication details

The article was received on 10 Nov 2018, accepted on 21 Dec 2018 and first published on 21 Dec 2018


Article type: Paper
DOI: 10.1039/C8PY01597J
Citation: Polym. Chem., 2019, Advance Article
  •   Request permissions

    Synthesis and degradation of branched, photo-labile poly(acrylic acid) and polystyrene

    O. Eckardt, S. Seupel, G. Festag, M. Gottschaldt and F. H. Schacher, Polym. Chem., 2019, Advance Article , DOI: 10.1039/C8PY01597J

Search articles by author

Spotlight

Advertisements