目的]制备一种新型羧甲基纤维素(CMC)/丙烯酸酯无氟防油剂,将其应用于食品包装中。[方法]以CMC、甲基丙烯酸甲酯(MMA)、丙烯酸丁酯(BA)和甲基丙烯酸(MAA)为原料,通过单因素试验优化防油剂的制备工艺,采用傅里叶红外光谱(FTIR)、纳米粒度...目的]制备一种新型羧甲基纤维素(CMC)/丙烯酸酯无氟防油剂,将其应用于食品包装中。[方法]以CMC、甲基丙烯酸甲酯(MMA)、丙烯酸丁酯(BA)和甲基丙烯酸(MAA)为原料,通过单因素试验优化防油剂的制备工艺,采用傅里叶红外光谱(FTIR)、纳米粒度及Zeta电位分析仪、扫描电镜(SEM)分析防油剂的化学结构、粒径、电荷和成膜性能。采用动态油接触角和防油等级来评价食品包装纸的防油性能。[结果]在最优工艺(m_(MMA)∶m_(BA)=4∶6、APS用量为2.5%、SDS用量为10.0%、CMC用量为8.0%、MAA用量为4.0%)下,防油剂平均粒径为66.64 nm、Zeta电位为-21.91 m V,具有良好的成膜性能。当涂布量为6.0 g/m^(2)时,制备的食品包装纸的防油等级可达最高(12.0级),食品包装纸具有良好的可回收性能,纤维回收率可达94.7%。[结论]CMC/丙烯酸酯防油剂是一种防油性能良好的无氟防油剂,在食品包装纸中有广阔的应用前景。展开更多
2,2,3,3-tetrafluoropropyl acrylate(TFPA)was prepared by esterification of acrylic acid and 2,2,3,3-tetrafluoropropanol in the presence of polymerization retarder,dehydration agent and concentrated sulfuric acid.The ef...2,2,3,3-tetrafluoropropyl acrylate(TFPA)was prepared by esterification of acrylic acid and 2,2,3,3-tetrafluoropropanol in the presence of polymerization retarder,dehydration agent and concentrated sulfuric acid.The effect of polymerization retarader,the amount of sulfuric acid and reaction duration on the yield of TFPA was reported.The results showed that the yield of TPFE was 65～70% based on the theoretical calculation under optimized experimental conditions.展开更多
文摘目的]制备一种新型羧甲基纤维素(CMC)/丙烯酸酯无氟防油剂,将其应用于食品包装中。[方法]以CMC、甲基丙烯酸甲酯(MMA)、丙烯酸丁酯(BA)和甲基丙烯酸(MAA)为原料,通过单因素试验优化防油剂的制备工艺,采用傅里叶红外光谱(FTIR)、纳米粒度及Zeta电位分析仪、扫描电镜(SEM)分析防油剂的化学结构、粒径、电荷和成膜性能。采用动态油接触角和防油等级来评价食品包装纸的防油性能。[结果]在最优工艺(m_(MMA)∶m_(BA)=4∶6、APS用量为2.5%、SDS用量为10.0%、CMC用量为8.0%、MAA用量为4.0%)下,防油剂平均粒径为66.64 nm、Zeta电位为-21.91 m V,具有良好的成膜性能。当涂布量为6.0 g/m^(2)时,制备的食品包装纸的防油等级可达最高(12.0级),食品包装纸具有良好的可回收性能,纤维回收率可达94.7%。[结论]CMC/丙烯酸酯防油剂是一种防油性能良好的无氟防油剂,在食品包装纸中有广阔的应用前景。
文摘2,2,3,3-tetrafluoropropyl acrylate(TFPA)was prepared by esterification of acrylic acid and 2,2,3,3-tetrafluoropropanol in the presence of polymerization retarder,dehydration agent and concentrated sulfuric acid.The effect of polymerization retarader,the amount of sulfuric acid and reaction duration on the yield of TFPA was reported.The results showed that the yield of TPFE was 65～70% based on the theoretical calculation under optimized experimental conditions.
