EFFECT OF CATALYTIC SYSTEMS ON THE MECHANICAL PROPERTIES LOSS OF SOME EGYPTIAN CROSS LINKED COTTON FABRICS | ||
| Egyptian Journal of Agricultural Research | ||
| Article 17, Volume 82, Issue 2, July 2004, Pages 731-746 PDF (2.72 M) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/ejar.2004.258195 | ||
| Author | ||
| SALAH M. SALEM | ||
| Cotton Research Institute, Agricultural Research Center, Giza, Egypt | ||
| Abstract | ||
| Severe tensile strength loss has been the major disadvantage of durable press finished 100% cotton fabrics. The objective of this study is to evaluate the contribution to the overall strength loss by acid degradation and by aosslinldng of cellulose, and to investigate the relationship between the strength loss due to crosstinking and the moleafiar structure of the aosslinking agent In order to develop a fundamental understanding of the mechanism of tensile strength loss in crosslinked cotton fabric. Based on the understanding of the mechanism, it will be possible to reach the final objective of optimizing the strength reaction and improving the performance of durable press finished cotton fabrics and garments. This study examined the effects of the catalyst systems on the mechanical strength of Egyptian two cotton fabrics made from Gin 89 and Giza 80 cotton varltles werer crossinked with dimethyldihydroxy ethylene urea (DMDHEU). Different variables such as time, temperature, concentration of catalysts were studied. The obtained results could be summarized as follows: 1.The wrinkle recovery angle (WRA), and durable press rating (DP), of Egyptian cotton Giza 89 fabric treated with DMDHEU Increased more than Giza 80 fabric with Increasing the concentration of the catalytic system till 2% at 160°C In 3 mint 2.The strength loss of the cotton fabrics used Increased in the Presence of the catalytic system (activated or buffered) to reach the mzodmum loss 80% with the activated catalyst. 3.DMDHEU concentration is critical for optimizing the tensile strength retention of finished fabrics. 4.The magnitude of fabric strength loss is affected by the temperature, time, concentration of the catalyst, and both of cation and anion used as the catalyst. S.Activated catalyst, which indudes an organic add caused more severe fabric strength loss due to additional cellulose degradation Induced by the organic add in the catalyst system. | ||
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