Tapioca starch was used as raw material, acrylamide as a monomer, N,N-methylenebisacrylamide as a cross-linking agent, potassium persulfate as an initiator, tapioca starch-based hydrogels were prepared by microwave irradiation technology. The effects of monomer, crosslinker, and initiator dosage on swelling properties of hydrogels were investigated. The results showed that when the ratio of starch to acrylamide was 1∶3, 0.02 g N,N-methylenebisacrylamide and 0.05 g potassium persulfate were used, the water absorption ratios of tapioca starch hydrogels prepared by microwaving at 400 W for 60 s reached the highest. FT-IR, field emission scanning electron microscope (FESEM), and other analytical methods were used for characterization. The results showed that the tapioca starch-based hydrogels were successfully prepared. The swelling balance ratios of hydrogels reached maximum at 35 ℃. Moreover, hydrogels had good water holding capacities at room temperature. This study provides certain experimental bases for preparing and applying starch hydrogel, which increases the added values of tapioca starch.
GAO Fengyuan
,
WEI Donglai
,
WEI Dongping
,
WANG Bing
,
WU Lugui
,
LAN Ping
,
LIAO Anping
. Characterization of microwave synthesized tapioca starch hydrogels and their performance tests[J]. Food and Fermentation Industries, 2019
, 45(7)
: 95
-100
.
DOI: 10.13995/j.cnki.11-1802/ts.018392
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