Home
Resources
Publications
Tailor-made Polyfluoroacrylate and Its Block Copolymer by RAFT Polymerization in Miniemulsion; Improved Hydrophobicity in the Core-Shell Block Copolymer

Tailor-made Polyfluoroacrylate and Its Block Copolymer by RAFT Polymerization in Miniemulsion; Improved Hydrophobicity in the Core-Shell Block Copolymer

Arindam Chakrabarty, Nikhil K Singha

J Colloid Interface Sci. 2013 Oct 15;408:66-74.

PMID: 23953650

Abstract:

Controlled/living radical polymerization (CRP) of a fluoroacrylate was successfully carried out in miniemulsion by Reversible Addition Fragmentation chain Transfer (RAFT) process. In this case, 2,2,3,3,4,4,4-heptafluorobutyl acrylate (HFBA) was polymerized using 2-cyanopropyl dodecyl trithiocarbonate (CPDTC) as RAFT agent, Triton X-405 and sodium dodecyl sulfonate (SDS) as surfactant, and potassium persulphate (KPS) or 2,2'-azobis isobutyronitrile (AIBN) as initiator. Being compatible with hydrophobic fluoroacrylate, this RAFT agent offered very high conversion and good control over the molecular weight of the polymer. The miniemulsion was stable without any costabilizer. The long chain dodecyl group (-C12H25) (Z-group in the RAFT agent) had beneficial effect in stabilizing the miniemulsion. When 2-cyano 2-propyl benzodithioate (CPBD) (Z=-C6H5) was used as RAFT agent, the conversion was less and particle size distribution was very broad. Block copolymerization with butyl acrylate (BA) using PHFBA as macro-RAFT agent showed core-shell morphology with the aggregation of PHFBA segment in the shell. GPC as well as DSC analysis confirmed the formation of block copolymer. The core-shell morphology was confirmed by TEM analysis. The block copolymers (PHFBA-b-PBA) showed significantly higher water contact angle (WCA) showing much better hydrophobicity compared to PHFBA alone.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP424646	2,2,3,3,4,4,4-Heptafluorobutyl acrylate		424-64-6	Price

As a specialist in analytical chemical Products, Alfa Chemistry offers consumers a wealth of raw materials and a full range of technologies and services.

QUICK LINKS

HEADQUARTERS

Tel:

Fax:

Email: