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Issue 4, 2012
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Sulfonated copolymers with SO3H and COOH groups for the hydrolysis of polysaccharides

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Abstract

The well-defined sulfonated block copolymer poly(acrylic acid)-block-poly(styrene sulfonic acid) (PAA-b-PSSH) and the random copolymer poly(acrylic acid)-random-poly(styrene sulfonic acid) (PAA-r-PSSH) were prepared by direct thermolysis of the precursor copolymers poly(tert-butyl acrylate)-block-poly(neopentyl styrenesulfonate) (PtBA-b-PNSS) and poly(tert-butyl acrylate)-random-poly(neopentyl styrenesulfonate) (PtBA-r-PNSS), which were synthesized by living radical polymerization (MWD < 1.10) catalyzed with CuBr. GPC, EA, 1H NMR and FT-IR spectra were employed to characterize the structure of the synthesized acid polymers. The catalytic performance of the acid polymers was evaluated for the hydrolysis of starch and cellulose in aqueous solution under microwave irradiation. With the same effective acid concentration, the random copolymer PAA-r-PSSH gave the highest glucose yield among the prepared catalysts. It is believed that the good results were caused by the synergic effect of the SO3H and COOH groups in the polymer chain. In addition, microwave irradiation led to better glucose yields in the hydrolysis of polysaccharides than the conventional heating method with acid polymers as catalysts.

Graphical abstract: Sulfonated copolymers with SO3H and COOH groups for the hydrolysis of polysaccharides

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Article information


Submitted
26 Jun 2011
Accepted
28 Sep 2011
First published
20 Oct 2011

J. Mater. Chem., 2012,22, 1283-1289
Article type
Paper

Sulfonated copolymers with SO3H and COOH groups for the hydrolysis of polysaccharides

X. Li, Y. Jiang, L. Shuai, L. Wang, L. Meng and X. Mu, J. Mater. Chem., 2012, 22, 1283
DOI: 10.1039/C1JM12954F

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