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发明公开
CN106893052A 一种氧化石墨烯/聚丙烯酰胺复合水凝胶的制备方法 无效 - 驳回

一种氧化石墨烯/聚丙烯酰胺复合水凝胶的制备方法
摘要：
本发明属于生物医药领域，具体公开一种氧化石墨烯/聚丙烯酰胺复合水凝胶的制备方法。首先将氧化石墨烯超声分散在水中，然后加入丙烯酰胺和过硫酸铵水溶液，置于微波反应仪中，控制微波功率在800~1200瓦、温度在60~80℃，微波反应10~15min，获得凝胶状半成品；其中，按质量体积比计，氧化石墨烯∶水∶丙烯酰胺∶过硫酸铵水溶液=0.1~0.3g∶20~40mL∶10~15g∶2~4 mL，所述过硫酸铵水溶液的质量百分比浓度为2~4%；将凝胶状半成品放入模具中，在与微波反应同样的温度下，水浴反应2~6h，即得氧化石墨烯/聚丙烯酰胺复合水凝胶。本发明氧化石墨烯/聚丙烯酰胺复合水凝胶的拉伸断裂强度是传统方法制备的水凝胶的2~5倍；制备方法易操作。
摘要（英）：

The invention belongs to the field of biological medicine and particularly discloses a preparation method of graphite oxide/polyacrylamide composite hydrogel. The method comprises the steps of ultrasonically dispersing graphite oxide in water, then adding acrylamide and an ammonium persulfate aqueous solution, putting in a microwave reactor, controlling microwave power at 800-1200W and a temperature at 60-80 DEG C for microwave reaction for 10-15min to form a jelly-like semifinished product, putting the jelly-like semifinished product in a mold for water bath reaction for 2-6h at the same temperature as that in the microwave reaction, and obtaining the graphite oxide/polyacrylamide composite hydrogel, wherein a mass volume ratio of graphite oxide to water to acrylamide to the ammonium persulfate aqueous solution is (0.1-0.3)g:(20-40)mL:(10-15)g:(2-4)mL; a mass percent concentration of the ammonium persulfate aqueous solution is 2-4%. The tensile breaking strength of the graphite oxide/polyacrylamide composite hydrogel is 2-5 times that of hydrogel prepared by the traditional method, and the preparation method is easy to operate.

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