Abstract
The study evaluates comparatively some physical and chemical properties of polyamide 6.6 standard and biodegradable. It also evaluates the period of biodegradation of the biodegradable yarn sample and standard sample. The physical properties analyzed were tensile strength, elongation, and tenacity. The chemical properties were related to the behavior of the samples in dyeing and the evaluation of subsequent strength dyeing. The evaluated samples were taken from knitwear produced with polyamide textured filament yarn 80 dtex f 68x1, standard and biodegradable, being purged, bleached, and dyed. The results of the physical tests, although statistically different, have values very near the average, which in practice represent acceptable values within the statistical control process. Both standard and biodegradable samples had the same chemical behavior and there is no difference. Concerning to biodegradation time under laboratory conditions, the carbon dioxide produced by the samples was monitored and measured to determine the percentage of biodegradation according to ASTM D 5511. After 735 days the percentage of biodegradation of the biodegradable yarn was 81.7% and of the normal yarn was 5.2%. This is an expressive gain in ecological terms for synthetic fiber.
Highlights
According to Milan (2010), a problem with the environment is currently related to the quality of life and future generations, which makes it a search for the development of a collective conscience
Biodegradable polyamide yarn had equivalent results of physical properties when compared to standard polyamide yarn
The research carried out shows that the biodegradable polyamide yarn has a high biodegradation index maintaining the main properties of mechanical resistance and dyeing behavior
Summary
According to Milan (2010), a problem with the environment is currently related to the quality of life and future generations, which makes it a search for the development of a collective conscience. Textile is an indispensable element of human society throughout its history. In addition to the maintenance of basic needs—protecting themselves from the outside environment and maintaining necessary conditions for survival, human beings have been using textile products as means of expressing their identities, wealth, power, and the like, and it has been an important commodity traded globally over centuries (Tojo et al, 2012). By analyzing the industries by branches of activity, the textile industry, with the whole chain of clothing-related activities, has not developed proportionally to its worldwide expansion the concerns about the materials and processes, causing grave consequences as textile garbage and the exorbitant quantity of textile wastes from the production process
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