Semiaromatic polyamides containing ether and different numbers of methylene (2–10) units: synthesis and properties
作者:Gang Zhang、Yu-xuan Zhou、Yu Kong、Zhi-min Li、Sheng-Ru Long、Jie Yang
DOI:10.1039/c4ra10074c
日期:——
The resultant semi-aromatic polyamides showed excellent mechanical, processability, thermal and retardant property.
生成的半芳香聚酰胺表现出优异的机械性能、加工性能、热性能和阻燃性能。
Semi-aromatic polyamides containing methylene and thioether units: synthesis and membrane properties
作者:Gang Zhang、Su-Jiao Cao、Hao-Hao Ren、Xiao-Jun Wang、Sheng-Ru Long、Jie Yang
DOI:10.1039/c6ra20717k
日期:——
stability with initial degradation temperatures (Td) of 409 to 419 °C for the synthesized semi-aromatic polyamides, as determined by differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA) characterization. A water flux and retention rate for the resultant semi-aromatic polyamide membranes in the range of 89–371 L (m2 h)−1 was observed when measured by ultrafiltration cup experiments
通过与4-氨基苯硫醇(4-ABT)和半芳族二氟苯甲酰胺反应合成了一系列含有不同含量的亚甲基和硫醚单元的半芳族二胺。然后将它们与4,4'-硫代二苯甲酰氯(TDC)反应生成一系列半芳族聚酰胺。热性能研究证实,玻璃化转变温度(T g)为163-203°C,在初始降解温度(T d)下具有良好的热稳定性。差示扫描量热法(DSC)和热重分析(TGA)表征,确定合成半芳族聚酰胺在409至419°C的温度范围内)。通过超滤杯实验测量,所得半芳族聚酰胺膜的水通量和保留率在89–371 L(m 2 h)-1范围内,这表明它们适用于分离过程。所得的半芳族聚酰胺显示出良好的耐腐蚀性,特别是在强碱性环境中。发现它们可以承受NaOH(2 mol L -1)溶液近6个月而不会损失机械强度。