微生物菌种的筛选及其对活性黄染料模拟废水的处理

采用驯化筛菌法筛选出能够有效降解活性黄染液的目标菌株,然后运用目标菌株处理模拟活性黄染料废水。结果表明:目标菌株处理染料模拟废水效果明显;环境条件为37℃、120r/min时,最佳去除率可达到82%以上。

Preparation and Properties of Antibacterial Lyocell Fibers Containing Chitosan Derivative

The O-carboxymethyl chitosan sodium salt, NaCMCh, was initially synthesized and analyzed with better antibacterial activity than chitesan. Then NaCMCh was dissolved in the N-mcthylmorpholine-N-oxide, NMMO, solution with cellulose for spinning of the lyocell fiber. The results showed that the lyocell fibers modified with over 2 wt% NaCMCh has good antibacterial activity in against the E. coli and with NaCMCh content below 6 wt% has considerable mechanical properties.

BOPET光学薄膜表面丙烯酸酯光固化涂层的制备

由正硅酸乙酯、甲基三乙氧基硅烷和甲基丙烯酸羟乙酯合成了有机硅丙烯酸酯预聚物,其与酚醛环氧丙烯酸酯、纳米SiO_(2)在光引发剂1173作用下生成丙烯酸酯。采用UV光固化机将其在BOPET光学薄膜上涂布并固化。采用红外光谱及拉曼光谱对涂布液及涂层进行了表征,并通过对涂层的力学性能和光散射性测试研究了正硅酸乙酯、酚醛环氧丙烯酸酯和纳米SiO_(2)对涂层性能的影响。结果表明:随着正硅酸乙酯用量增加,涂层的铅笔硬度逐渐下降,柔韧性和附着力提升。随着酚醛环氧丙烯酸酯含量增加,涂膜的水接触角明显减小。纳米SiO_(2)用量增加可显著提高涂层的静摩擦系数。涂层厚度增加其BRDF峰值上升,当涂层厚度<1.5 mm时,涂层的散射曲线低于基底散射曲线。制备的丙烯酸酯光固化涂层与BOPET光学薄膜的结合性良好,光固化涂层能起到隔湿、降低光散射、保护薄膜受到外力损坏的作用。