Green composite films prepared from cellulose,starch and lignin in room-temperature ionic liquid |
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| Authors: | Rong-Lan Wu Xiu-Li Wang Fang Li Hui-Zhang Li Yu-Zhong Wang |
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| Affiliation: | 1. Center for Degradable and Flame-Retardant Polymeric Materials, College of Chemistry, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610064, China;2. Key Lab of Oil and Gas Fine Chemicals, Ministry of Education, Xinjiang University, Urumqi, Xinjiang, 830046, China;1. School of Chemistry and Chemical Engineering, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, Henan Normal University, Xinxiang, Henan 453007, PR China;2. School of Chemical Engineering and Pharmaceutics, Henan University of Science and Technology, Luoyang, Henan 471003, PR China;1. State Key Laboratory of Pulp and Papermaking Engineering, School of Light Industry and Food Science, South China University of Technology, Guangzhou 510640, China;2. Institute of Biomass Chemistry and Technology, Beijing Forestry University, Beijing 100083, China;1. Department of Physics, College of Science, Engineering and Technology, University of South Africa, Johannesburg, South Africa;2. Department of Chemical Engineering Technology, University of Johannesburg, Johannesburg, South Africa;3. CAS Key Lab Engineering Plastics, Institue of chemistry, Chinese Academy of Sciences (CAS), Beijing, China;4. Centre for Composite Materials, International Research Centre, Kalasalingam University, Anand Nagar, KrishnanKovil, 626126, India;1. State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China;2. Department of Mechanical and Industrial Engineering, Northeastern University, Boston, MA 02115, USA;3. School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China |
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| Abstract: | A series of novel biobased composite films derived from cellulose, starch and lignin were prepared from an ionic liquid (IL), 1-allyl-3-methylimidazolium chloride (AmimCl) by coagulating in a nonsolvent condition. The ionic liquid can be recycled with a high yield and purity after the green film was prepared. The uniform design method was applied to investigate mechanical properties of the biobased composite films. The effect of each component and their associated interactive effects were investigated. The experimental results showed that contents of cellulose, lignin and starch had a significant influence on the mechanical properties of composite films. The composite films showed relatively excellent mechanical properties in dry and wet states owing to the mutual property supplement of different components. The composite films were characterized via FT-IR, X-ray diffraction (XRD) and scanning electron microscope (SEM). Their thermal stability and gas permeability were also investigated, and the results showed that the composite films had good thermal stability and high gas barrier capacity and give a CO2:O2 permeability ratio close to 1. |
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