𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Acrylonitrile-Butadiene Rubber (NBR) Prepared via Living/Controlled Radical Polymerization (RAFT)

✍ Scribed by Andreas Kaiser; Sven Brandau; Michael Klimpel; Christopher Barner-Kowollik

Publisher
John Wiley and Sons
Year
2010
Tongue
English
Weight
292 KB
Volume
31
Category
Article
ISSN
1022-1336

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

In the current work we present results on the controlled/living radical copolymerization of acrylonitrile (AN) and 1,3‐butadiene (BD) via reversible addition fragmentation chain transfer (RAFT) polymerization techniques. For the first time, a solution polymerization process for the synthesis of nitrile butadiene rubber (NBR) via the use of dithioacetate and trithiocarbonate RAFT agents is described. It is demonstrated that the number average molar mass, $\overline M _{\rm n} $, of the NBR can be varied between a few thousand and 60 000 g · mol^−1^ with polydispersities between 1.2 and 2.0 (depending on the monomer to polymer conversion). Excellent agreement between the experimentally observed and the theoretically expected molar masses is found. Detailed information on the structure of the synthesized polymers is obtained by variable analytical techniques such as infrared spectroscopy (IR), nuclear magnetic resonance (NMR) spectroscopy, differential scanning calorimetry, and electrospray ionization‐mass spectrometry (ESI‐MS).

magnified image

📜 SIMILAR VOLUMES

Controlled radical polymerization of N-v
Controlled radical polymerization of N-vinylphthalimide using carboxyl-terminated trithiocarbonate as RAFT agent and preparation of microfibers via electrospinning technique
✍ D. Chikhaoui-Grioune; A. Aqil; A. M. Zalfen; A. Benaboura; C. Jérome 📂 Article 📅 2010 🏛 John Wiley and Sons 🌐 English ⚖ 678 KB

## Abstract Reversible addition‐fragmentation chain transfer (RAFT) polymerization of __N__‐vinylphthalimide in __N__,__N__‐dimethylformamide (DMF) solution was carried out using 2‐carboxypropan‐2‐yl dodecyl trithiocarbonate as a reversible chain transfer agent in the presence of 2,2′‐azobisisobuty

Controlling surfaces and interfaces with
Controlling surfaces and interfaces with functional polymers: Preparation and functionalization of dendritic–linear block copolymers via metal catalyzed “living” free radical polymerization
✍ Marc R. Leduc; Wayne Hayes; Jean M. J. Fréchet 📂 Article 📅 1998 🏛 John Wiley and Sons 🌐 English ⚖ 319 KB 👁 2 views

The preparation and chemical modification of dendritic-linear block copolymers with surface functionalized dendritic components are presented. Isophthalate ester-functionalized dendrons featuring benzylic halide groups at their focal points have been used for the metal catalyzed ''living'' radical p