TY  - JOUR
AU  - Walsh, Zarah
AU  - Janeček, Emma-Rose
AU  - Hodgkinson, James T.
AU  - Sedlmair, Julia
AU  - Koutsioumpas, Alexandros
AU  - Spring, David R.
AU  - Welch, Martin
AU  - Hirschmugl, Carol J.
AU  - Toprakcioglu, Chris
AU  - Nitschke, Jonathan R.
AU  - Jones, Mark
AU  - Scherman, Oren A.
TI  - Multifunctional supramolecular polymer networks as next-generation consolidants for archaeological wood conservation
JO  - Proceedings of the National Academy of Sciences of the United States of America
VL  - 111
IS  - 50
SN  - 1091-6490
CY  - Washington, DC
PB  - National Acad. of Sciences
M1  - FZJ-2015-02333
SP  - 17743 - 17748
PY  - 2014
AB  - The preservation of our cultural heritage is of great importance to future generations. Despite this, significant problems have arisen with the conservation of waterlogged wooden artifacts. Three major issues facing conservators are structural instability on drying, biological degradation, and chemical degradation on account of Fe3+-catalyzed production of sulfuric and oxalic acid in the waterlogged timbers. Currently, no conservation treatment exists that effectively addresses all three issues simultaneously. A new conservation treatment is reported here based on a supramolecular polymer network constructed from natural polymers with dynamic cross-linking formed by a combination of both host-guest complexation and a strong siderophore pendant from a polymer backbone. Consequently, the proposed consolidant has the ability to chelate and trap iron while enhancing structural stability. The incorporation of antibacterial moieties through a dynamic covalent linkage into the network provides the material with improved biological resistance. Exploiting an environmentally compatible natural material with completely reversible chemistries is a safer, greener alternative to current strategies and may extend the lifetime of many culturally relevant waterlogged artifacts around the world. 
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000346366500037
C6  - pmid:25385610
DO  - DOI:10.1073/pnas.1406037111
UR  - https://juser.fz-juelich.de/record/189120
ER  -