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化工进展  2015 

对氯甲基苯乙烯-马来酸酐接枝蔗糖共聚物减水剂的制备

DOI: 10.16085/j.issn.1000-6613.2015.04.033, PP. 1093-1097

Keywords: 马来酸酐,蔗糖,减水剂

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Abstract:

以过氧化苯甲酰(BPO)为引发剂,对氯甲基苯乙烯、马来酸酐(MAH)为聚合单体,采用非均相聚合方法,合成对氯甲基化苯乙烯-马来酸酐共聚物,并通过与蔗糖反应合成苯乙烯-马来酸酐接枝蔗糖共聚物(SP).通过红外光谱(FI-IR)和核磁共振氢谱(1HNMR)对减水剂结构进行表征.并以净浆流动度为指标设计正交试验,考察了取代反应的反应温度、反应时间和催化剂用量等工艺条件对SP净浆流动度的影响.结果表明当取代反应的反应温度为45℃,反应时间为2h,催化剂用量为10%时所得制品的减水性能最佳.以正交试验最佳取代反应条件得到的SP,具有良好分散性,在掺量为0.3%时,净浆流动度为320mm,减水率为27.9%.

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