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"Composite nonwoven materials are versatile materials with a variety of applications, including hygiene, medicine and filtration. This important book provides a technical resource for professionals and academics in the field. It explores these materials in terms of fiber types used, manufacturing processes, structure, and physical properties.The first part of the book focuses on the use of natural and synthetic fibers in composite nonwovens, discusses their structure in terms of fiber packing and alignment, and their physical properties. Further chapters deal with the practical applications of composite nonwoven materials. Hygiene applications, such as diapers, female sanitary products, incontinence pads, and wipes are covered, as well as composite nonwoven-based medical products and filters."

"ABSTRAKPenggunaan geotekstil sebagai perkuatan tanah diharapkan dapat meningkatkan daya dukung dan kuat geser tanah. Tujuan penelitian ini adalah melihat tingkat efisiensi dari penggunaan geotekstil nonwoven pada tanah merah dan melihat seberapa jauh perubahan nilai kohesi dan sudut geser sebelum diberikan dan setelah diberikan perkuatan dengan menggunakan uji triaxial UU Uncosolidated Undrained . Selain itu dilakukan juga pengujian California Bearing Ratio untuk melihat pengaruh penggunaan geotekstil nonwoven terhadap daya dukung tanah.Pengujian dilakukan juga pada kepadatan yang berbeda, yaitu pada keadaan optimum dan 95 dari keadaan optimum baik untuk di atas optimum maupun di bawah optimum. Hasil penelitian ini memperlihatkan bahwa adanya peningkatan nilai kohesi tanah pada keadaan kepadatan optimum, sedangkan ketika kepadatannya tidak optimum, cenderung tidak berpengaruh. Nilai sudut geser cenderung turun ketika diberikan perkuatan. Namun, dalam uji CBR terjadi kenaikan nilai CBR pada tanah uji yang diberikan perkuatan

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ABSTRAKThe use of geotextiles as soil reinforcement is to increase the bearing capacity and the shear strength of the soil. The purpose of this study is to look at the efficiency level of the use of nonwoven geotextiles on the tropical red clay soil and to see how far the cohesion and shear values change before they are given and after the reinforcement using the Uncosolidated Undrained Triaxials. In addition, the California Bearing Ratio test is also conducted to see the effect of nonwoven geotextile utilization on soil bearing capacity. The test is also carried out at different densities, at the optimum state and 95 of the optimum state for both optimum and below optimum. The results of this study show that there is an increase in soil cohesion values in optimum density conditions, whereas when the density is not optimum, it tends to have no effect. The shear angle value tends to fall when given reinforcement. However, in the CBR test there was an increase in the value of CBR on the given assayed test ground."

"Proses produksi cepat untuk garmen medis pelindung diri merupakan salah satu kegiatan di sektor pasar tekstil yang sedang berkembang pesat di saat pandemi COVID-19 (Coronavirus Disease-2019). Selulosa bakteri adalah material alami dan dapat menjadi sumber bahan bukan tenunan. Selulosa bakteri menjadi biomaterial yang menarik untuk aplikasi biomedis karena karakteristiknya seperti tingginya kemurnian, kristalinitas, dan sifat mekanik. Proses dehidrasi selulosa bakteri menyebabkan struktur selulosa bakteri runtuh sehingga menghasilkan film selulosa bakteri dengan karakteristik kaku, rapuh, dan tidak elastis. Dalam penelitian ini, film selulosa bakteri dimodifikasi secara ex-situ dengan perendaman dalam larutan PEG–CA dengan berbagai konsentrasi massa sebagai hasil reaksi esterifikasi polietilena glikol (PEG) dengan asam sitrat (CA). Film selulosa bakteri/PEG–CA memiliki permukaan yang berminyak dan kerapatan optik keabuan yang semakin tinggi ketika komposisi PEG:CA adalah 20:30. Hasil uji tarik mekanik menunjukkan bahwa film selulosa bakteri yang direndam dalam larutan PEG–CA dengan konsentrasi PEG (b/b) sebanyak 5% dan 10% memberikan peningkatan kekuatan tarik dan modulus tarik, tetapi sebaliknya ketika konsentrasi PEG sebanyak 20%. Secara keseluruhan, komposisi PEG dan CA optimum untuk larutan PEG–CA dipilih pada rentang konsentrasi PEG sebanyak 5–10 % (b/b) dan CA hingga 30% (b/b berat PEG).

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The fast production process for personal protective medical garments is one of the activities in the textile market sector which is rapidly growing during the COVID-19 (Coronavirus Disease-2019) pandemic. Bacterial cellulose is a naturally occurring material and can be used as a source of nonwoven material. Bacterial cellulose has become an attractive biomaterial for biomedical applications due to its characteristics such as high purity, crystallinity and mechanical properties. The dehydration process of bacterial cellulose causes the structure of bacterial cellulose to collapse, resulting in a bacterial cellulose film with rigid, brittle, and inelastic characteristics. In this study, the bacterial cellulose films were ex-situ modified by immersion in PEG–CA solutions with various mass concentrations as a result of the esterification reaction of polyethylene glycol (PEG) with citric acid (CA). The bacterial cellulose/PEG–CA film has an oily surface and a higher grayscale optical density when the PEG–CA composition was 20:30. The results of the mechanical tensile test showed that the bacterial cellulose film immersed in PEG–CA solutions with PEG concentrations (w/w) of 5% and 10% gave an increase in tensile strength and tensile modulus, but on the contrary, when the concentration was 20%. Overall, the optimum PEG and CA compositions for PEG–CA solutions were selected in the PEG concentration range of 5–10 % (w/w) and CA up to 30% (w/w by weight of PEG)."