期刊
CARBOHYDRATE POLYMERS
卷 255, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.carbpol.2020.117330
关键词
Hydroxyethyl cellulose; Aramid nanofibers; Mechanical reinforcement; Ultraviolet shielding
资金
- National Key Research and Development Plan [2017YFB0308300, 2017YFB0308302]
- National Natural Science Foundation of China [51803110]
- Zhejiang Province Key research and Development Project [2019C04008]
- Shaanxi Province Education Department Key project [20JY002]
- Xi'an Science and Technology Project [2019220114SYS016CG038]
By adding ANFs as additives, the mechanical and ultraviolet shielding properties of HEC film can be significantly improved, resulting in higher tensile strength and better UV radiation resistance.
Recently, aramid nanofibers (ANFs) have drawn the attention of scientist due to the high mechanical strength, high-temperature resistance, and high electrical and thermal insulation properties. In this work, we aimed at improving the mechanical and ultraviolet shielding properties of hydroxyethyl cellulose (HEC) film by using ANFs as additives. Mechanical results show that the 1.0 % ANFs could improve the tensile strength of pure HEC film by 176.6 %. Meanwhile, the ANFs additives can also enable the HEC film excellent ultraviolet (UV) shielding and visible light transmittance, as well as high UV radiation resistance ability. It is believed that the high mechanical strength of the HEC/ANFs composites is derived from the rearrangement of HEC chains along the tensile direction after the addition of hard ANFs and the enhanced hydrogen bonds between HEC and ANFs.
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