Department of Food, Agricultural, and Biological Engineering, The Ohio State University, Columbus, Ohio, United States of America.
Department of Food Science and Technology, The Ohio State University, Columbus, Ohio, United States of America.
PLoS One. 2024 Oct 31;19(10):e0312891. doi: 10.1371/journal.pone.0312891. eCollection 2024.
The durability and mechanical properties of synthetic medical gloves, such as those made from nitrile, vary drastically depending on the manufacturer. This study reports the chemical composition of several brands of nitrile gloves via FTIR and solid-state NMR analysis and relates composition to glove durability (found via GAD), mechanical performance (found via Instron), and whether the gloves meet or fail ASTM International standards. Out of the four nitrile examination glove brands tested, American Nitrile Slate brand had superior durability results and was found to be made of acrylonitrile butadiene rubber, as expected. The U.S. Medical glove brand, which was also found to be pure nitrile, had the superior tensile results, consistently reaching over 800% elongation before breaking. Although Restore Touch brand exam gloves were made of nitrile, they exhibited substandard tensile strength and durability due to the thinness of the glove, which barely met the ASTM minimum thickness value. The Vglove brand glove had the overall worst mechanical properties, did not meet ASTM requirements, and had an NMR spectrum consistent with that of a polyvinyl chloride glove, rather than nitrile. Gloves that fail to meet the minimum performance requirements should not be used for medical purposes to protect the health and safety of consumers.
合成医用手套（如丁腈手套）的耐用性和机械性能因制造商而异。本研究通过傅里叶变换红外光谱（FTIR）和固态核磁共振（NMR）分析报告了几种丁腈手套品牌的化学成分，并将成分与手套耐用性（通过 GAD 发现）、机械性能（通过 Instron 发现）以及手套是否符合或不符合 ASTM 国际标准联系起来。在测试的四个丁腈检查手套品牌中，美国丁腈石板牌具有卓越的耐用性结果，正如预期的那样，它由丙烯腈丁二烯橡胶制成。美国医用手套品牌也被发现是纯丁腈橡胶，其拉伸性能优越，在断裂前始终超过 800%的伸长率。尽管 Restore Touch 牌检查手套是由丁腈橡胶制成的，但由于手套较薄，其拉伸强度和耐用性不达标，勉强达到 ASTM 规定的最小厚度值。Vglove 牌手套的机械性能总体上最差，不符合 ASTM 要求，其 NMR 图谱与聚氯乙烯手套一致，而不是丁腈橡胶。不符合最低性能要求的手套不应用于医疗目的，以保护消费者的健康和安全。
