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Honeycomb structured porous films prepared from carbohydrate based polymers synthesized via the RAFT process

Honeycomb structured porous films prepared from carbohydrate based polymers synthesized via the... Carbohydrate based polystyrene was synthesized RAFT polymerization. The RAFT agents were based on α--glucose, β-cyclodextrin and modified cellulose to obtain polystyrene with a polar head or polystyrene with a star or comb structure, respectively. The polymerizations were carried out in different solvents. The molecular weight of the linear polymer was found to develop according to the expected values, but the synthesis of the carbohydrate based polymers was influenced by other parameters. The molecular weight for the star polymer synthesis showed a pronounced deviation due to the reduced accessibility of the RAFT group at higher conversions of the polymerization. Films of these carbohydrate containing polystyrenes were cast from carbon disulfide and dichloromethane producing highly regular honeycomb structured films with pore diameters between 0.5 and 4 µm. The pore size was influenced by the polymers used as well as by the casting conditions. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Materials Chemistry Royal Society of Chemistry

Honeycomb structured porous films prepared from carbohydrate based polymers synthesized via the RAFT process

Royal Society of Chemistry — Aug 20, 2003

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Royal Society of Chemistry
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Abstract

Carbohydrate based polystyrene was synthesized RAFT polymerization. The RAFT agents were based on α--glucose, β-cyclodextrin and modified cellulose to obtain polystyrene with a polar head or polystyrene with a star or comb structure, respectively. The polymerizations were carried out in different solvents. The molecular weight of the linear polymer was found to develop according to the expected values, but the synthesis of the carbohydrate based polymers was influenced by other parameters. The molecular weight for the star polymer synthesis showed a pronounced deviation due to the reduced accessibility of the RAFT group at higher conversions of the polymerization. Films of these carbohydrate containing polystyrenes were cast from carbon disulfide and dichloromethane producing highly regular honeycomb structured films with pore diameters between 0.5 and 4 µm. The pore size was influenced by the polymers used as well as by the casting conditions.

Journal

Journal of Materials ChemistryRoyal Society of Chemistry

Published: Aug 20, 2003

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