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中文摘要：
为优化黄原胶（XG）与丙烯酰胺（AM）接枝共聚物（XG-g-AM）的合成工艺,以产品接枝率、接枝效率的回归综合得分为指标,采用响应曲面（RS）法分析了m（AM）∶m（XG）比例、XG浓度和辐射总剂量（60Co-γ为辐射源）对产物接枝参数的影响,并建立了相应的预测模型;同时利用元素分析、红外光谱（FT-IR）和X射线衍射（XRD）法对接枝产物的结构进行了表征。结果表明：AM已成功接枝在XG上,并且当m（AM）∶m（XG）=2.9∶1、XG浓度为9.8 g/L和辐射总剂量为5.9 kGy时,相应产品的接枝率、接枝效率回归综合得分的预测值（19.95）最大;验证了最佳工艺条件下制备的产品接枝率为130.2%,平均接枝效率为80.4%,综合得分为19.78,试验值与预测值吻合较好,说明该模型可以较好地反映综合得分与各影响因素之间的关系。
英文摘要：
In order to optimize technology of preparing XG（xanthan gum）-g-AM（acrylamide）（namely graft copolymer between XG and AM）,the influences of some factors（such as mass ratio of AM to XG,concentration of XG,total radiation dose with 60Co-γ as radiation source） were analysed on graft parameters of XG-g-AM by response surface（RS） method with regressive synthesis score of grafting ratio and grafting efficiency as evaluation indexes.The relevant forecast model was established.The structures of XG-g-AM were characterized by element analysis,FT-IR and XRD methods.The results showed that the AM was successfully grafted onto XG,and the relevant XG-g-AM product had maximum forecast value（19.95） of regressive synthesis score of grafting ratio and grafting efficiency when mass ratio of m（AM）∶m（XG） was 2.9∶1,concentration of XG was 9.8 g/L and total radiation dose was 5.9 kGy.It was validated that the experiment value and forecast value were approximate because the grafting ratio and average grafting efficiency were 130.2% and 80.4% respectively,and synthesis score was 19.78 for XG-g-AM prepared by optimal process conditions.So the forecast model can preferably describe the relation between synthesis score and various influence factors.
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