Blog


Pronunciation : raft

noun : raft

Source:WordNet 3.1

  • 1. (

    ) a flat float (usually made of logs or planks) that can be used for transport or as a platform for swimmers ;

verb : raft

Source:WordNet 3.1

  • 1. (

    ) transport on a raft; "raft wood down a river" ;

  • 2. (

    ) travel by raft in water; "Raft the Colorado River" ;

  • 3. (

    ) make into a raft; "raft these logs" ;


See more about : raft

Reversible addition-fragmentation chain transfer or RAFT polymerization is one of several kinds of reversible-deactivation radical polymerization. It makes use of a chain transfer agent in the form of a thiocarbonylthio compound (or similar, from here on referred to as a RAFT agent, see Figure 1) to afford control over the generated molecular weight and polydispersity during a free-radical polymerization. Discovered at the Commonwealth Scientific and Industrial Research Organisation (CSIRO) of Australia in 1998, RAFT polymerization is one of several living or controlled radical polymerization techniques, others being atom transfer radical polymerization (ATRP) and nitroxide-mediated polymerization (NMP), etc. RAFT polymerization uses thiocarbonylthio compounds, such as dithioesters, thiocarbamates, and xanthates, to mediate the polymerization via a reversible chain-transfer process. As with other controlled radical polymerization techniques, RAFT polymerizations can be performed with conditions to favor low dispersity (molecular weight distribution) and a pre-chosen molecular weight. RAFT polymerization can be used to design polymers of complex architectures, such as linear block copolymers, comb-like, star, brush polymers, dendrimers and cross-linked networks.
Read More at wikipedia

Source:wikipedia


See more about : raft