Release of free formaldehyde in THP salt tannages

被引：0
|
作者：
Li Ya [1 ]
Shao Shuangxi [1 ]
Shi Kaiqi [1 ]
Jiang Lan [1 ]
机构：
[1] Ningbo Univ Technol, Inst Appl Chem, Ningbo 315016, Zhejiang, Peoples R China
来源：
JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS AND CHEMISTS | 2008年 / 92卷 / 04期
关键词：
D O I：
暂无
中图分类号：
TB3 [工程材料学]; TS1 [纺织工业、染整工业];
学科分类号：
0805 ; 080502 ; 0821 ;
摘要：
To study the release of formaldehyde from tetrakis (hydroxymethyl) phosphonium (THP) salts, the contents of free formaldehyde in THPC solutions and in the leathers tanned with THPC and tetrakis hydroxymethyl phosphonium sulfate (THPS) were determined by the spectrophotometric method. Zeta potential of THPC at different pHs was tested. To decrease the content of free formaldehyde in the leather H2O2 was used at the end of the tanning process. The results indicated that the HCHO contents varied with pH both in THP salt solutions and in the tanned leathers. The free formaldehyde in the leathers can be oxidized by H2O2 and thus leads to the decrease of the content of free formaldehyde.
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页码：167 / 169
页数：3
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