期刊
JOURNAL OF MEMBRANE SCIENCE
卷 585, 期 -, 页码 99-108出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.memsci.2019.04.059
关键词
Regenerate cellulose film; High strength; Dense packing; Gas barrier; Optical sensor
资金
- National Natural Science Foundation of China [251573143]
- Fundamental Research Funds for the Central Universities [2042018kf0042]
- Major Program of National Natural Science Foundation of China [21334005]
- Major International (Regional) Joint Research Project [21620102004]
- Funds for International Cooperation and Exchange of the National Natural Science Foundation of China [21811530006]
A simple strategy of water evaporation induced dense packing is used to construct regenerate cellulose film (CF) with high strength and transparency. Cellulose solution was cast and exposed to atmosphere at room temperature to conduct water evaporation, and it was concentrated and undergoes a sol-gel transition to form a physically cross-linked network with high packing density. CFs were obtained after removing the residue solvent. The dense packing led to homogeneous structure and decreased pore size, as well as enhanced mechanical, optical and gas barrier property. The highest tensile strength reached 158.2 and 11.7 MPa in the dry and hydrogel state, respectively, stronger than regenerated cellulose films of same kind, while the visible light transmittance at 550 nm reached 89.94 and 95.05% in the dry and hydrogel state. O-2 and CO2 permeability at 40% relative humidity reached 1.37 x 10(-17) and 1.08 x 10(-17) cm(3) cm cm(-2) s(-1) Pa-1, respectively, lower than literatures in the same condition. Moreover, cellulose/silver nanocomposite was fabricated by taking advantage of the mechanical and optical property of CF, demonstrating a considerably low detection limit and high sensitivity as optical sensing platform. The present work supplies a simple pathway to improve the structure and property of regenerated cellulose materials, demonstrating great potentials.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据