【摘要】 以不同物质量比的硫酸亚铁(FeSO4)和四羟甲基硫酸鏻(THPS)合成了双组分配合物。通过对不同配比的Fe-THPS溶液以等摩尔连续变化法对其进行紫外可见光谱以及红外光谱分析,确定了两者最可能的配位比n(Fe(II)):n(THPS)为1:3。用电位滴定法对该配合物形成的稳定常数进行测定,发现其在40℃时的表观稳定常数较30℃时小。用单独的FeSO4、THPS,FeSO4和THPS的不同顺序以及Fe-THPS配合物溶液对浸酸绵羊皮胶原进行处理,结果显示后两种方法对胶原耐热稳定性增加的贡献较单独使用大,处理后的皮胶原收缩温度均高于90℃。其中直接用配合物溶液处理得到的改性胶原的收缩温度最高,耐干热处理也较好。采用Fe-THPS配合物溶液处理后革的撕裂强度和抗张强度均得到很大提高,符合轻工业对服装革的要求。更多还原

【Abstract】 Two in-situ compound from ferron sulphate and tetra hydroxymethyl phosphonium sulphate (THPS) was synthesized according to different mole ratio between the two materials.By testing the UV absorption and FT-IR spectrum of Fe-THPS compounds,the most possible mole ratio of n(Fe(Ⅱ)):n(THPS) was 1:3.Then the stable constant of Fe-THPS was determined by potentiometer titration.It was found that the compound is unstable,and the stability at 30 ℃ is better than that of 40 ℃.At last,sheep skin was tanned with solo FeSO4,solo THPS,FeSO4 and THPS,Fe-THPS compound.The results showed that the hydrothermal stability of leather treated with combination tannage is higher than that of leather treated with solo tanning agents,and its shrinkage temperature can reach to 90 ℃.Fe-THPS has the best cross-linking property and the leather treated with the compound has a good dry thermal stability.The tensile strength and tearing strength of leather tanned with Fe-THPS compound is enhanced obviously,which can meet the request of garment light leather.更多还原