Details

Autor(en) / Beteiligte

• Gui, Qiang
• Pan, Changou
• Xie, Pengwei
• Pei, Mingliang
• Liu, Peng

Titel

Fluorination of nitrile-butadiene rubber without gelation via radical graft polymerization in presence of chain transfer agent

Ist Teil von

• European polymer journal, 2021-05, Vol.151, p.110442, Article 110442

Ort / Verlag

Oxford: Elsevier Ltd

Erscheinungsjahr

2021

Link zum Volltext

Quelle

Elsevier ScienceDirect Journals Complete

Beschreibungen/Notizen

• [Display omitted] •NBR was fluorinated via radical graft polymerization of fluorinating monomer.•Gelation could be avoided completely in presence of NDM as chain transfer agent.•The graft polymerization mechanism was proposed from the 1H NMR analysis. Fluorination could efficiently improve the comprehensive performance of nitrile-butadiene rubber (NBR). However, severe gelation usually occurred in the radical graft polymerization onto the diene-based polymers. Here, a facile approach has been established for the facile fluorination of NBR without gelation via radical graft polymerization in presence of n-dodecylmercaptan (NDM) as chain transfer agent, with 2,2,3,4,4,4-hexafluorobutyl acrylate (F6) as the model fluorinating monomer. The gel content decreased with increasing the feeding ratio of NDM and reached 0 with a feeding ratio of NDM of 50 mol% of the initiator, with a fluorination degree of 0.50%. The graft polymerization mechanism was proposed with the 1H NMR analysis. The proposed strategy is expected to provide a promising approach for the functionalization of diene-based polymers.