Viscoelastic Properties of Fully Biomass-Based Transparent Plastic Comprising Cellulose Acetate and Citrate Ester
Viscoelastic properties including melt processability were evaluated for a fully biomass-based glassy plastic comprising cellulose acetate (CA) and triethyl citrate (TEC). The TEC exerted an excellent plasticizing effect without dissolving the CA crystals. Pure CA has poor melt processability. In co...
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| Format: | Article |
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MDPI AG
2022-04-01
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| Series: | Materials |
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| Online Access: | https://www.mdpi.com/1996-1944/15/9/3038 |
| _version_ | 1797504075481219072 |
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| author | Takeyoshi Kimura Takumitsu Kida Masayuki Yamaguchi |
| author_facet | Takeyoshi Kimura Takumitsu Kida Masayuki Yamaguchi |
| author_sort | Takeyoshi Kimura |
| collection | DOAJ |
| description | Viscoelastic properties including melt processability were evaluated for a fully biomass-based glassy plastic comprising cellulose acetate (CA) and triethyl citrate (TEC). The TEC exerted an excellent plasticizing effect without dissolving the CA crystals. Pure CA has poor melt processability. In contrast, the TEC-plasticized CA had good melt-processability at 205 °C, which is lower than the degradation temperature of CA. Extrusion was possible even at 1000 s<sup>−1</sup> without any flow instabilities, similar to conventional plastics showing good processability at extrusion. Furthermore, there was marked strain-hardening behavior in the transient elongational viscosity, suggesting that various processing operations are possible, such as a long-chain branched polymer. This biomass-based plastic can be used as a substitute for conventional glassy plastics because it is highly transparent and its softening temperature is above 100 °C. |
| first_indexed | 2024-03-10T03:59:28Z |
| format | Article |
| id | doaj.art-69dd51753f8b4fc69ee93d2c7bea429e |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-10T03:59:28Z |
| publishDate | 2022-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-69dd51753f8b4fc69ee93d2c7bea429e2023-11-23T08:37:10ZengMDPI AGMaterials1996-19442022-04-01159303810.3390/ma15093038Viscoelastic Properties of Fully Biomass-Based Transparent Plastic Comprising Cellulose Acetate and Citrate EsterTakeyoshi Kimura0Takumitsu Kida1Masayuki Yamaguchi2School of Materials Science, Japan Advanced Institute of Science and Technology, 1-1 Asahidai, Nomi 923-1292, JapanSchool of Materials Science, Japan Advanced Institute of Science and Technology, 1-1 Asahidai, Nomi 923-1292, JapanSchool of Materials Science, Japan Advanced Institute of Science and Technology, 1-1 Asahidai, Nomi 923-1292, JapanViscoelastic properties including melt processability were evaluated for a fully biomass-based glassy plastic comprising cellulose acetate (CA) and triethyl citrate (TEC). The TEC exerted an excellent plasticizing effect without dissolving the CA crystals. Pure CA has poor melt processability. In contrast, the TEC-plasticized CA had good melt-processability at 205 °C, which is lower than the degradation temperature of CA. Extrusion was possible even at 1000 s<sup>−1</sup> without any flow instabilities, similar to conventional plastics showing good processability at extrusion. Furthermore, there was marked strain-hardening behavior in the transient elongational viscosity, suggesting that various processing operations are possible, such as a long-chain branched polymer. This biomass-based plastic can be used as a substitute for conventional glassy plastics because it is highly transparent and its softening temperature is above 100 °C.https://www.mdpi.com/1996-1944/15/9/3038cellulose acetatetriethyl citrateviscoelastic propertiesrheologyelongational viscosity |
| spellingShingle | Takeyoshi Kimura Takumitsu Kida Masayuki Yamaguchi Viscoelastic Properties of Fully Biomass-Based Transparent Plastic Comprising Cellulose Acetate and Citrate Ester Materials cellulose acetate triethyl citrate viscoelastic properties rheology elongational viscosity |
| title | Viscoelastic Properties of Fully Biomass-Based Transparent Plastic Comprising Cellulose Acetate and Citrate Ester |
| title_full | Viscoelastic Properties of Fully Biomass-Based Transparent Plastic Comprising Cellulose Acetate and Citrate Ester |
| title_fullStr | Viscoelastic Properties of Fully Biomass-Based Transparent Plastic Comprising Cellulose Acetate and Citrate Ester |
| title_full_unstemmed | Viscoelastic Properties of Fully Biomass-Based Transparent Plastic Comprising Cellulose Acetate and Citrate Ester |
| title_short | Viscoelastic Properties of Fully Biomass-Based Transparent Plastic Comprising Cellulose Acetate and Citrate Ester |
| title_sort | viscoelastic properties of fully biomass based transparent plastic comprising cellulose acetate and citrate ester |
| topic | cellulose acetate triethyl citrate viscoelastic properties rheology elongational viscosity |
| url | https://www.mdpi.com/1996-1944/15/9/3038 |
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