Microwave-accelerated synthesis and characterization of potato starch-g-poly(acrylamide)

被引：80
|
作者：
Singh, Vandana [1 ]
Tiwari, Ashutosh [1 ]
Pandey, Sadanand [1 ]
Singh, Somit Kumar [1 ]
机构：
[1] Univ Allahabad, Dept Chem, Allahabad 211002, Uttar Pradesh, India
来源：
STARCH-STARKE | 2006年 / 58卷 / 10期
关键词：
microwave irradiation; graft copolymerization; starch-graft-poly(acrylamide); viscosity; shear stability;
D O I：
10.1002/star.200600520
中图分类号：
TS2 [食品工业];
学科分类号：
0832 ;
摘要：
Using a very low concentration of potassium persulfate as initiator, acrylamide could be efficiently grafted onto potato starch under microwave irradiation and for the grafting 02 removal from the reaction vessel was not required. Under optimal conditions, grafting and efficiency observedwere 160% and 89%, respectively. Grafted starch was characterized by using Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD) and thermogravimetric analysis (TGA). It was observed that the microwave irradiation could significantly accelerate the synthesis of starch-graft-poly(acryl amide), because under identical conditions no grafting was observed in a conventional procedure. Viscosity, shear stability and water/saline solution retention of the microwave-synthesized grafted starch were studied and compared with that of the parent starch.
引用
收藏
页码：536 / 543
页数：8
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