Preparation and mechanical properties of modified nanocellulose/PLA composites from cassava residue
Nanocellulose was prepared by a mechanochemical method using cassava residue as a raw material and phosphoric acid as the auxiliary agent. The prepared nanocellulose was hydrophobically modified with stearic acid to improve its dispersibility. This modified nanocellulose was added to polylactic acid...
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2018-02-01
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doaj-6fc208840a274136af9a2d5e130fbcd62020-11-24T21:19:55ZengAIP Publishing LLCAIP Advances2158-32262018-02-0182025116025116-710.1063/1.5023278050802ADVPreparation and mechanical properties of modified nanocellulose/PLA composites from cassava residueLijie Huang0Xiaoxiao Zhang1Mingzi Xu2Jie Chen3Yinghan Shi4Chongxing Huang5Shuangfei Wang6Shuxiang An7Chunying Li8Guangxi University, Nanning 530004, ChinaGuangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, Nanning 530004, ChinaGuangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, Nanning 530004, ChinaGuangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, Nanning 530004, ChinaGuangxi University, Nanning 530004, ChinaGuangxi University, Nanning 530004, ChinaGuangxi University, Nanning 530004, ChinaQilu University of Technology, Jinan 250353, ChinaGuangxi University, Nanning 530004, ChinaNanocellulose was prepared by a mechanochemical method using cassava residue as a raw material and phosphoric acid as the auxiliary agent. The prepared nanocellulose was hydrophobically modified with stearic acid to improve its dispersibility. This modified nanocellulose was added to polylactic acid (PLA) film-forming liquids at concentrations of 0%, 0.5%, 1.0%, 1.5% and 2.0%, and the effect of modified nanocellulose on the mechanical properties of polylactic acid (PLA) films were investigated. When at least 0.5% modified nanocellulose is added, more active groups of modified nanocellulose are adsorbed onto the PLA molecular chain. Although the tensile strength of the film is only improved by 13.59%, the flexibility of the film decreases, and the elastic modulus decreases by 28.91%. When 1% modified nanocellulose is added, the modified nanocellulose and PLA are tangled together through molecular chains and they co-crystallize to form a stable network structure. The tensile strength of the nanocomposite films is enhanced by 40.03%, the elastic modulus is enhanced by 55.65%, and the flexibility of the film decreases.http://dx.doi.org/10.1063/1.5023278 |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Lijie Huang Xiaoxiao Zhang Mingzi Xu Jie Chen Yinghan Shi Chongxing Huang Shuangfei Wang Shuxiang An Chunying Li |
spellingShingle |
Lijie Huang Xiaoxiao Zhang Mingzi Xu Jie Chen Yinghan Shi Chongxing Huang Shuangfei Wang Shuxiang An Chunying Li Preparation and mechanical properties of modified nanocellulose/PLA composites from cassava residue AIP Advances |
author_facet |
Lijie Huang Xiaoxiao Zhang Mingzi Xu Jie Chen Yinghan Shi Chongxing Huang Shuangfei Wang Shuxiang An Chunying Li |
author_sort |
Lijie Huang |
title |
Preparation and mechanical properties of modified nanocellulose/PLA composites from cassava residue |
title_short |
Preparation and mechanical properties of modified nanocellulose/PLA composites from cassava residue |
title_full |
Preparation and mechanical properties of modified nanocellulose/PLA composites from cassava residue |
title_fullStr |
Preparation and mechanical properties of modified nanocellulose/PLA composites from cassava residue |
title_full_unstemmed |
Preparation and mechanical properties of modified nanocellulose/PLA composites from cassava residue |
title_sort |
preparation and mechanical properties of modified nanocellulose/pla composites from cassava residue |
publisher |
AIP Publishing LLC |
series |
AIP Advances |
issn |
2158-3226 |
publishDate |
2018-02-01 |
description |
Nanocellulose was prepared by a mechanochemical method using cassava residue as a raw material and phosphoric acid as the auxiliary agent. The prepared nanocellulose was hydrophobically modified with stearic acid to improve its dispersibility. This modified nanocellulose was added to polylactic acid (PLA) film-forming liquids at concentrations of 0%, 0.5%, 1.0%, 1.5% and 2.0%, and the effect of modified nanocellulose on the mechanical properties of polylactic acid (PLA) films were investigated. When at least 0.5% modified nanocellulose is added, more active groups of modified nanocellulose are adsorbed onto the PLA molecular chain. Although the tensile strength of the film is only improved by 13.59%, the flexibility of the film decreases, and the elastic modulus decreases by 28.91%. When 1% modified nanocellulose is added, the modified nanocellulose and PLA are tangled together through molecular chains and they co-crystallize to form a stable network structure. The tensile strength of the nanocomposite films is enhanced by 40.03%, the elastic modulus is enhanced by 55.65%, and the flexibility of the film decreases. |
url |
http://dx.doi.org/10.1063/1.5023278 |
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