Synthesis method of terpolymer resin of starch grafted acrylic acid acrylamide
A technology of acrylic acid acrylamide and terpolymer, which is applied in the field of synthesis of terpolymer resin, can solve problems such as explosive polymerization, difficult temperature, and blockage of the discharge port, so as to reduce production cost, simplify the synthesis process, and achieve high The effect of conversion efficiency
Inactive Publication Date: 2016-11-16
BENGBU COLLEGE
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But the disadvantage is that it is difficult to control the temperature, it is easy to explode, it is easy to make stirring difficult, and the outlet is blocked.
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[0021] In order to make the objects and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0022] The embodiment of the present invention provides a method for synthesizing a terpolymer resin of starch-grafted acrylic acid acrylamide, comprising the following steps:
[0023] S1. Weigh 6g of starch and put it in a beaker, mix it with a certain amount of deionized water to make a 12% starch milk solution, add it into a four-necked flask equipped with a thermometer and a condenser tube, stir it into a suspension, and put it at a constant temperature of 85°C Gelatinized in a water bath until transparent;
[0024] S2. After the obtained emulsion is cooled to 50°C, add a certain amount of initiator, and keep stirring at a temperature of 50...
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The invention discloses a synthesis method of terpolymer resin of starch grafted acrylic acid acrylamide. The synthesis method comprises the following steps: after stirring a starch milk solution into suspension liquid, heating by water bath and pasting until the suspension liquid is transparent; after obtained emulsified liquid is cooled to the temperature of 50 DEG C, adding an initiator, and stirring for 35 minutes; slowly dropwise adding an acrylic acid solution and an acrylamide solution which have been neutralized by sodium hydroxide as well as a proper amount of a cross-linking agent, stirring and reacting for 3 hours; and after substances are fully reacted, precipitating the product with anhydrous ethanol, washing with acetone, carrying out suction filtering, drying, shearing, continuing drying, and grinding into powder to obtain finished products. The target product is synthesized by an aqueous solution method, by setting optimal preparation conditions, the obtained resin can be efficiently used in actual situations, optimal product performance such as high conversion efficiency is achieved, through detection, the prepared resin is highest in water absorbing property, the deionized water absorbing multiplying power of the resin can reach 930 g / g, and the normal saline absorbing multiplying power of the resin can reach 75 g / g.
Description
technical field [0001] The invention relates to the field of material preparation, in particular to a method for synthesizing a terpolymer resin of starch-grafted acrylic acid acrylamide. Background technique [0002] Super Absorbent Polymer (SAP for short) is a new type of water-absorbent material, which is different from traditional water-absorbent materials. Traditional water-absorbent materials (such as cotton, sponge, etc.) are mainly based on loose and porous physical structures, making them highly absorbent nature. The SAP resin is mainly due to its low cross-linked three-dimensional space network structure and a large number of strong hydrophilic groups, so that it can absorb water thousands of times larger than its own mass. After absorbing water, the tight three-dimensional network structure swells. Forming a gel, it is insoluble in water and organic solvents, and the water is not easy to lose, which makes it have strong water retention. [0003] The high water a...
Claims
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Login to View More IPC IPC(8): C08F251/00C08F220/06C08F220/56C08F2/10
CPCC08F251/00C08F2/10C08F220/06
Inventor 吴景梅赵建军王传虎张毅陶冬平
Owner BENGBU COLLEGE