Enhanced Mechanical and Water Absorption Properties of Rice Husk-Derived Nano-SiO2 Reinforced PHBV Composites
Poly(3-hydroxybutyrate–co–3-hydroxyvalerate) (PHBV) is a biodegradable polymer and has several potential applications. Herein, we have used a rich biomass resource, rice husk, to obtain rice husk nano-SiO2 (RHNS) and prepared RHNS/PHBV composites by using hot-press molding. The r...
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doaj-f585c602487d45d6a60a089995ce5b5c2020-11-24T21:19:22ZengMDPI AGPolymers2073-43602018-09-01109102210.3390/polym10091022polym10091022Enhanced Mechanical and Water Absorption Properties of Rice Husk-Derived Nano-SiO2 Reinforced PHBV CompositesLi Wang0Yong Guo1Yuxia Chen2Tong Chen3Shiliu Zhu4Tingting Zhang5Shengquan Liu6College of Forest and Garden, Anhui Agricultural University, Hefei 230036, ChinaCollege of Forest and Garden, Anhui Agricultural University, Hefei 230036, ChinaCollege of Forest and Garden, Anhui Agricultural University, Hefei 230036, ChinaCollege of Forest and Garden, Anhui Agricultural University, Hefei 230036, ChinaCollege of Forest and Garden, Anhui Agricultural University, Hefei 230036, ChinaCollege of Forest and Garden, Anhui Agricultural University, Hefei 230036, ChinaCollege of Forest and Garden, Anhui Agricultural University, Hefei 230036, ChinaPoly(3-hydroxybutyrate–co–3-hydroxyvalerate) (PHBV) is a biodegradable polymer and has several potential applications. Herein, we have used a rich biomass resource, rice husk, to obtain rice husk nano-SiO2 (RHNS) and prepared RHNS/PHBV composites by using hot-press molding. The results showed that the amorphous nature of spherical nano-SiO2 particles with an average diameter of 40–80 nm was obtained. The tensile strength and flexural strength of the RHNS/PHBV-3 composite reached up to 23.515 and 75.669 MPa, respectively, corresponding to an increase of 33.65% and 15.54% as compared to pure PHBV. The enhanced mechanical properties of the RHNS/PHBV composite can be attributed to the uniform dispersion and strong interfacial bonding of RHNS with the PHBV matrix. In addition, the water absorption rate of the RHNS/PHBV composite increased from 0.26% to 0.35% and the water swelling ratio followed the given order in different directions: thickness > width > length. Furthermore, the initial degradation temperature and residual rate of combustion at 700 °C of the composites increased with higher content of RHNS, which represents the enhanced thermal stability of RHNS/PHBV composites. In summary, RHNS served as an excellent reinforcement and RHNS/PHBV composites have shown promising properties for various potential applications.http://www.mdpi.com/2073-4360/10/9/1022rice-huskSiO2RHNSPHBVmechanical propertieswater absorptionthermal stability |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Li Wang Yong Guo Yuxia Chen Tong Chen Shiliu Zhu Tingting Zhang Shengquan Liu |
spellingShingle |
Li Wang Yong Guo Yuxia Chen Tong Chen Shiliu Zhu Tingting Zhang Shengquan Liu Enhanced Mechanical and Water Absorption Properties of Rice Husk-Derived Nano-SiO2 Reinforced PHBV Composites Polymers rice-husk SiO2 RHNS PHBV mechanical properties water absorption thermal stability |
author_facet |
Li Wang Yong Guo Yuxia Chen Tong Chen Shiliu Zhu Tingting Zhang Shengquan Liu |
author_sort |
Li Wang |
title |
Enhanced Mechanical and Water Absorption Properties of Rice Husk-Derived Nano-SiO2 Reinforced PHBV Composites |
title_short |
Enhanced Mechanical and Water Absorption Properties of Rice Husk-Derived Nano-SiO2 Reinforced PHBV Composites |
title_full |
Enhanced Mechanical and Water Absorption Properties of Rice Husk-Derived Nano-SiO2 Reinforced PHBV Composites |
title_fullStr |
Enhanced Mechanical and Water Absorption Properties of Rice Husk-Derived Nano-SiO2 Reinforced PHBV Composites |
title_full_unstemmed |
Enhanced Mechanical and Water Absorption Properties of Rice Husk-Derived Nano-SiO2 Reinforced PHBV Composites |
title_sort |
enhanced mechanical and water absorption properties of rice husk-derived nano-sio2 reinforced phbv composites |
publisher |
MDPI AG |
series |
Polymers |
issn |
2073-4360 |
publishDate |
2018-09-01 |
description |
Poly(3-hydroxybutyrate–co–3-hydroxyvalerate) (PHBV) is a biodegradable polymer and has several potential applications. Herein, we have used a rich biomass resource, rice husk, to obtain rice husk nano-SiO2 (RHNS) and prepared RHNS/PHBV composites by using hot-press molding. The results showed that the amorphous nature of spherical nano-SiO2 particles with an average diameter of 40–80 nm was obtained. The tensile strength and flexural strength of the RHNS/PHBV-3 composite reached up to 23.515 and 75.669 MPa, respectively, corresponding to an increase of 33.65% and 15.54% as compared to pure PHBV. The enhanced mechanical properties of the RHNS/PHBV composite can be attributed to the uniform dispersion and strong interfacial bonding of RHNS with the PHBV matrix. In addition, the water absorption rate of the RHNS/PHBV composite increased from 0.26% to 0.35% and the water swelling ratio followed the given order in different directions: thickness > width > length. Furthermore, the initial degradation temperature and residual rate of combustion at 700 °C of the composites increased with higher content of RHNS, which represents the enhanced thermal stability of RHNS/PHBV composites. In summary, RHNS served as an excellent reinforcement and RHNS/PHBV composites have shown promising properties for various potential applications. |
topic |
rice-husk SiO2 RHNS PHBV mechanical properties water absorption thermal stability |
url |
http://www.mdpi.com/2073-4360/10/9/1022 |
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