Study On The Biocompatible Polyester Adhesives For Textiles

In textile industry, the adhesive can improve the superficial performance and the quality of the yarn or the textile, which will be easy to be processed, so the application of the adhesive becomes more and more widespread. As a result of the special chemical constitution and the characteristic of adhesive, the adhesive are very difficultly degraded in the natural environment, which has created certain pressure to the environment. Based on this background, the environmental biodegradable adhesives have appeared in recent years. The polyester hot melt adhesive is one kind of these new kinds. At present, the new polyester adhesive mainly contains the poly-hydroxyl-butyric acid/valerian ate the poly-lactide (poly-lactic acid) and the poly-caprolactone (PCL) and so on. The poly-lactic acid and the poly-caprolactone have the very good biodegradation performance, the good biological compatibility and the biological absorbability. And they have very widespread application in the medical material aspect. The poly-lactic acid and the poly-caprolactone have many researches in medical and the industrial degraded goods, but the research report of application in the textile has few at present. In this paper, referencing the papers have been published about the poly-lactic acid and the poly-caprolactone, through the copolymerization of D,L-lactic acid andε-caprolactone, improves the performance of the polymer, make it to meet requirements of the textile adhesive.In the paper, through exploring the method of synthesis, use the D, L-lactic acid andε-caprolactone as the monomer to fusing copolymerization. Through assembling polymerization device, in the conditions of vacuum, used caprolactone as catalyst, controlled per-polymerization time, polymerization time and temperature, prepared the adhesive based lactic acid.Using the analysis method of FTIR, GPC, and DSC to characteristic the various performances of polymer and through the experiment of single factor, analyzed and summarized the best single factor. Prepared the adhesive based lactic using the best reaction conditions.Finally explored the suitable sizing process of textiles to the adhesives based on lactic acid. Through summarizing and analyzing the normal sizing process of fabric, determined the film method and the scatter power method were both suitable to this kind adhesive. In the trial of film method, controlled the thickness of the film, and did the peel strength test of these different thickness adhesive. Through the tests, analyzed the most optimal thickness.The polyester adhesive based on lactic acid made using the best synthetic method. It has biocompatibility, biodegradability, good mechanical property, good adhesive property, and its gluing processes were easy. Hence, it has broad prospects for development in textile.