Recyclable Polydimethylsiloxane Network Crosslinked by Dynamic Transesterification Reaction.

ABSTRACT: This article reports preparation of a crosslinked polydimethylsiloxane (PDMS) network via dynamic transesterification reaction between PDMS-diglycidyl ether and pripol 1017 with Zn(OAc)₂ as the catalyst. The thermal dynamic nature of the network was investigated by the creep-recovery and stress-relaxation tests. The synthesized PDMS elastomer showed excellent solvent resistance even under high temperature, and could be reprocessed by hot pressing at 180?°C with the mechanical properties maintained after 10 cycles. Application of the PDMS elastomer in constructing micro-patterned stamps repeatedly has been demonstrated. The high plastic temperature and good solvent resistance distinguish the research from other reported thermoplastic PDMS elastomers and broaden the practical application areas.

SUBMITTER: Zhang H 

PROVIDER: S-EPMC5605709 | biostudies-literature | 2017 Sep

REPOSITORIES: biostudies-literature