1058 Improvements to Eco-Friendly Sanitary Napkins made from Natural Fibres: Development and Characterization Tables 3 and 4, respectively, provide information on the different sanitary napkins manufactured with different natural fibers as well as the results of their performance analysis. The information supplied shows the extent of spread of goat blood for three distinct samples (S1, S2, and S3), each of which represents distinct properties of absorbent materials, as well as the absorbency, retention, rewet under load, strike-through rate, and leak factor. Sample S3 is the best of all the napkin samples because of its good absorbency, retention, and leak factor—even though it rewets under load more than the other samples. With an absorbency percentage of 142.48%, Sample S1 exhibits good absorbency and can hold a significant volume of fluid. In addition, it has a high retention percentage of 138.65%, which indicates that the majority of the liquid that is absorbed is retained. Interestingly, S1 does not rewet under load, indicating that it keeps its dryness under pressure. Its relatively high leak factor of 2 could, however, suggest that it is less successful in keeping liquid from passing through. The 14 second strike-through rate suggests that it absorbs quickly. Goat blood has spread quite a bit, measuring 55 mm in length and 40 mm in width, which suggests good coverage. In spite having lower retention and absorbency percentages than sample S1, sample S2 still performs well. It shows some wetness under pressure with a minor rewet under load of 0.71. Effective liquid containment is suggested by the low leak factor of 0. The comparatively quick absorption is indicated by the strike-through rate of 5.99 seconds. Goat blood has spread less widely than S1, measuring 35 mm in length and 30 mm in width. Sample S3 exhibits superior fluid absorption and retention capacity, as evidenced by its highest absorbency and retention percentages. Its notable rewet under 6.9 load, however, could compromise its dryness under pressure. At 0.65, the leak factor is comparatively low. An acceptable absorption speed is indicated by the strike-through rate of 8.78 seconds. With measurements of 50 mm in length and 45 mm in width, the goat blood spread is likewise significant, indicating good coverage. As a result of their various strengths and weaknesses, these samples are suitable for a variety of applications depending on the particular requirements of absorbency, retention, rewet resistance, and leakage prevention. 4. Conclusion Three different types of sanitary napkins made of natural fibers, each with specific performance characteristics, were thoroughly analyzed in the study. A number of standards, such as absorbency, retention, rewet under load, leak factor, strike-through rate, and the degree of goat blood spread, were carefully examined in order to evaluate these sanitary napkins. Important information about the effectiveness of these environmentally friendly and biodegradable menstrual products was provided by the results. With an absorbency percentage of 142.48%, Sample S1, which was made up of a core layer made of a blend of bamboo and flax and a top layer spunlaced entirely of bamboo, showed excellent absorbency, with a retention percentage of 138.65%, it effectively held onto liquid, and when under load, it showed no signs of rewetting, demonstrating its resilience to pressure. S1, which comparatively high leak factor of 2, indicating that there is still potential for improvement in stopping liquid seepage. At 14 seconds, the strike-through rate was rapid and the spread of goat blood was wide. In comparison to Sample S1, Sample S2, which had a core layer made of a bamboo-hemp blend, showed slightly less absorbency and retention. It performed well with a leak factor of 0, ensuring efficient liquid containment, but it also displayed a low rewet under load of 0.71, indicating some wetness under pressure. The rate of strike-through was 5.99 seconds, and the spread of goat blood was marginally smaller than S1. With the highest absorbency and retention rates out of the three samples, Sample S3 remained out as the top performer. It was exceptional at absorbing and holding onto fluids. Its notable rewet under 6.9 load,
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