綿織物의 低·Formaldehyde D. P. 加工 = Low Formaldehyde Release D. P. Finish on Cotton Fabrics

다국어 초록 (Multilingual Abstract)

In order to control the formaldehyde release from D.P. finished fabric, cotton fabric was padded in DMDHEU resin bath containing either Zn(NO,)2 or MgC12 catalyst and a formaldehyde scavenger like Glycerol, Sorbitol, Formamide, Polyvinyl alcohol (PVA, n=2000) or diols, then dried and cured.
The results are as follows:
1. When Lewis acid catalyst like Zn(N0_3)_2 or MgCl_2 was added in pad bath, the fabric finished with Zn(N0_3)_2 catalyst released the lower formaldehyde than with MgCl_2.
2. When the effect of pad bath pH was examined with varying the kinds of catalyst and the scavenger, it was found that the pad bath pH influenced on the amount of formaldehyde release and the optimum pad bath pH is at 4.3.
Especially, in case of finishing at pad bath pH 4.3 with adding Formamide, the amount of formaldehyde release was decreased by about 45-35% with Zn(N0_)_2, while by about 20∼45% with MgCl_2 catalyst.
In case of varying the concentration of a scavenger (Formamide), 1% concentration of a scavenger was found to be the optimum level and the higher the curing temperature up to 180℃, the lesser the amount of formaldehyde release were observed.
3. When the diol was used as scavenger, the amount of formaldehyde release was decreased by about 40-50%, but the longer the intramolecular length between OH groups, the lesser the amount of decrease of formaldehyde release were observed.
4. When the mixture of scavengers (Formamide and Glycerol) was added in the pad bath, .synergistic effect on formaldehyde release between the two scavengers wasn't observed.
5. The tensile strength of the resin finished fabric was reduced with increasing the pad bath pH and was influenced by the kind of scavengers, and the tensile strength was severely reduced when scavengers, especially Formamide, was added.
The wrinkle recovery property is generally improved by resin finish on cotton fabric. When Formamide was added, the wrinkle recovery property is slightly decreased compared with that of the fabrics resin finished without a scavenger, and when polyol was added, the wrinkle recovery property showed almost no change.