{'fraction_non_alphanumeric': 0.024271844660194174, 'fraction_numerical': 0.018030513176144243, 'mean_word_length': 5.166666666666667, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
Effect of Ultraviolet Exposure to the Cylindrica (L.) Beauv. Fiber Characteristics

This article explains usage of the ultraviolet irradiation method on Beauv cylindrical (L) imperata fibers as a new way of natural fiber treatment, based on the absorption of ultraviolet rays containing other elements that lead to lignin degradation, which enhances natural fiber strength. Using the ultraviolet exposed fiber method with intervals of 10, 20, 50, and 100 hours, each treatment was tested with scanning electron microscope-energy dispersive spectroscope. The authors found that the treatment resulted in an increase in the fiber’s tensile strength. The results of fiber treatment with 50-hour irradiation produced a fiber with a tensile strength of 130.2 MPa. Our method allows an increase in the AL2O3 element, which indicates an increase in fiber tensile strength of 130.2 Pa. An evaluation of the effectiveness of the new method can be seen in the scanning electron microscope-energy dispersive spectroscope test results. The Imperata Cylindrica (L) Beauv fiber surface roughness test results showed an increase in surface roughness to 1.47 μm resulting from the 50-hour ultraviolet treatment. With this roughness, the adhesion between the fiber and epoxy resin increases. This increased fiber tensile strength and surface roughness, as a result of ultraviolet light treatment, offers the potential for its use as a composite reinforcement.