𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Reversible Addition Fragmentation Chain Transfer (RAFT) Polymerization with a Polymeric RAFT Agent Containing Multiple Trithiocarbonate Groups

✍ Scribed by Yuqing Liu; Kevin A. Cavicchi

Publisher
John Wiley and Sons
Year
2009
Tongue
English
Weight
207 KB
Volume
210
Category
Article
ISSN
1022-1352

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

Polytrithiocarbonates were prepared by the condensation polymerization of a dicarboxylic acid functional trithiocarbonate and a diol. These polymers were effective reversible addition fragmentation chain transfer (RAFT) agents for the bulk polymerization of polystyrene homopolymers and a poly[styrene‐block‐(tert‐butylstyrene)] block copolymer. Size exclusion chromatography (SEC) analysis of the original and amine cleaved polymers showed that the polydispersity of the polymer tended toward two with increasing polymerization time, but the polydispersity of the polymer units between trithiocarbonate groups was narrow (ca. 1.1–1.3) Also, the average number of trithiocarbonate groups per chain was found to be proportional to the number of trithiocarbonate groups in the starting RAFT agent. These polytrithiocarbonate RAFT agents will be useful for preparing multiblock copolymers over a range of chemistries, block numbers and molecular weights.

magnified image

📜 SIMILAR VOLUMES

Synthesis of polydimethylsiloxane-contai
Synthesis of polydimethylsiloxane-containing block copolymers via reversible addition fragmentation chain transfer (RAFT) polymerization
✍ Maurice L. Wadley; Kevin A. Cavicchi 📂 Article 📅 2010 🏛 John Wiley and Sons 🌐 English ⚖ 226 KB 👁 2 views

## Abstract Low polydispersity polydimethylsiloxane (PDMS) was end functionalized with a reversible addition fragmentation chain transfer (RAFT) agent by the esterification of hydroxyl terminated PDMS with a carboxylic acid functional RAFT agent. These PDMS‐RAFT agents were able to control the free

Narrowly Distributed Dendronized Polymet
Narrowly Distributed Dendronized Polymethacrylates by Reversible Addition-Fragmentation Chain Transfer (RAFT) Polymerization
✍ Afang Zhang; Liuhe Wei; A. Dieter Schlüter 📂 Article 📅 2004 🏛 John Wiley and Sons 🌐 English ⚖ 105 KB

## Abstract **Summary:** RAFT is applied to the dendronized macromonomers of the first and second generation, **1** and **2**, respectively. Good results are obtained in the presence of AIBN as radical initiator, with compound **6** as mediator and at mediator to monomer ratios of 2:200 for monomer

Reversible Addition-Fragmentation Transf
Reversible Addition-Fragmentation Transfer Polymerization in the Presence of MMT Immobilized Amphoteric RAFT Agent
✍ Bao-Qing Zhang; Cai-Yuan Pan; Chun-Yan Hong; Bin Luan; Peng-Jie Shi 📂 Article 📅 2006 🏛 John Wiley and Sons 🌐 English ⚖ 200 KB

## Abstract **Summary:** A novel reversible addition‐fragmentation transfer (RAFT) agent, 10‐carboxylic acid‐10‐dithiobenzoate‐decyltrimethylammonium bromide (CDDA), was synthesized and intercalated into montmorillonite (MMT). Successively, the CDDA‐intercalated MMT was used as RAFT agent in the in