[논문]Effect of hot press time on the structure characteristics and mechanical properties of silk non-woven fabric

Kim, Ye Eun; Bae, Yu Jeong; Seok, Young Seek; Um, In Chul

doi:10.7852/ijie.2022.44.1.12

Effect of hot press time on the structure characteristics and mechanical properties of silk non-woven fabric 원문보기

International journal of industrial entomology, v.44 no.1, 2022년, pp.12 - 20

Kim, Ye Eun (Department of Biofibers and Biomaterials Science, Kyungpook National University) , Bae, Yu Jeong (Department of Biofibers and Biomaterials Science, Kyungpook National University) , Seok, Young Seek (Gangwon Province Agricultural Product Registered Seed Station) , Um, In Chul (Department of Biofibers and Biomaterials Science, Kyungpook National University)

Abstract ▼ AI-Helper

In this research, the silk web was hot-pressed for various times, the effect of press time on the structure and mechanical properties of silk non-woven fabric was also investigated. The yellowing appeared in the silk non-woven fabric and became more apparent as press time was increased. The crystallinity of silk was decreased by the hot press treatment and it did not change significantly with an increase of hot press time. The porosity of silk non-woven fabric was constantly decreased until 120 s and it did not change much after that. The thickness of silk non-woven fabric was significantly decreased by a press time of 10 s and slightly decreased with a further increase of hot press time. The hot press treatment increased the maximum stress and elongation of silk non-woven fabrics. The press time had a significant impact on the mechanical properties of silk non-woven fabric, with 90 s being the optimum condition for the best work of rupture of silk non-woven fabric.

주제어

표/그림 (8)

그림 Scheme 1. Illustration of the preparation process of the natural silk non-woven fabric.
그림 Scheme 2. Two extension directions in the mechanical test; (a) the acute cross angle direction and (b) the obtuse cross angle direction between silk filaments.
그림 Fig. 1. (A) Photographs and (B) yellowness index of silk non-woven fabrics with different hot press times.
표 Table 1. FE-SEM images of the silk non-woven fabric treated with different hot press times. The white magnification bar represents 500 μm.
그림 Fig. 2. (A) ATR-FTIR spectra and (B) crystallinity index of silk nonwoven fabric prepared with different hot press times.
그림 Fig. 3. (A) Porosity and (B) thickness of silk non-woven fabric prepared with different hot press times.
그림 Fig. 4. (A) Representative stress-strain curve, (B) maximum stress, (C) elongation at the end, and (D) work of rupture of the acute cross angle direction of silk non-woven fabric prepared with different hot press times.
그림 Fig. 5. (A) Representative stress-strain curve, (B) maximum stress, (C) elongation at the end, and (D) work of rupture of the obtuse cross angle direction of silk non-woven fabric prepared with different hot press times.

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