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完整後設資料紀錄
DC 欄位 | 值 | 語言 |
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dc.contributor.advisor | 張豐丞,江前敏晴 | |
dc.contributor.author | Masato Morii | en |
dc.contributor.author | 森井 雅人 | zh_TW |
dc.date.accessioned | 2021-06-08T02:41:10Z | - |
dc.date.copyright | 2018-03-01 | |
dc.date.issued | 2018 | |
dc.date.submitted | 2018-02-12 | |
dc.identifier.citation | Asaka, K.: Polymer Actuators. The Robotics Society of Japan 21(7) 708-712 (2003).
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dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/20159 | - |
dc.description.abstract | An actuator is a mechanism for converting energy into motion. Piezoelectric actuators displace themselves when electric field is applied. Piezoelectric elements are lightweight and highly responsive, but the problem is that displacement is small with respect to changes in the electric field. Recently, high piezoelectric polymer materials have been developed and practically used as actuators. Biopolymer actuators are expected to expand their application in fields such as agricultural land and forest land utilizing biodegradability. Therefore, using nanocellulose with high crystallinity as a piezoelectric material was evaluated. The purpose of this thesis is to measure fundamental piezoelectric and inverse piezoelectric properties and to measure how these properties of cellulose nanocrystals, representative nanocellulose, are changed with blending cellulose nanofibers. In Chapter 5, Physical properties are compared based on the difference in the blending ratio between CNF and CNC. As the ratio of CNF increased, the tensile strength tended to increase. In Chapter 6, the piezoelectric coefficient of the CNF/CNC film and polyvinylidene difluoride (PVDF) film with high piezoelectricity were compared in the voltage generated by applying force and displacement by applied electric field. Although CNF/CNC films had much lower piezoelectric constants than that of the PVDF film; however, showed certain levels of piezoelectric constants, and no difference in piezoelectricity due to the difference in blending ratio of CNF/CNC was found. In Chapter 7, the piezoelectric coefficient was measured by using scanning probe microscope. The piezoelectric coefficient of the CNF/CNC film was influenced by the density rather than the blending ratio of CNF/CNC. In Chapter 8, CNF/CNC film is prepared by using electrospinning in order to control orientation. | en |
dc.description.provenance | Made available in DSpace on 2021-06-08T02:41:10Z (GMT). No. of bitstreams: 1 ntu-107-R05625050-1.pdf: 2057207 bytes, checksum: ce85211cf1bab18478320f9228ecf94d (MD5) Previous issue date: 2018 | en |
dc.description.tableofcontents | 1. Introduction ..................................................................... 2
1.1. Background ................................................................ 2 1.2. Contents of this thesis ............................................... 3 2. Literature Review ............................................................ 5 2.1. Piezoelectric Ceramics Actuator .............................. 5 2.2. Polymer actuator overview ....................................... 9 2.3. Nanocellulose as the material of piezoelectric sensor and actuator ..................................................................... 11 3. Objectives ....................................................................... 18 4. Theory ............................................................................ 19 5. Tensile strength test of CNF/CNC films ....................... 22 5.1. Introduction ............................................................. 22 5.2. Materials and Method ............................................. 22 5.3. Result and Discussion .............................................. 23 6. Sensor ............................................................................. 26 6.1. Introduction ............................................................. 26 6.2. Materials and Method ............................................. 26 6.3. Results and Discussion ............................................ 28 7. Actuator ......................................................................... 32 7.1. Introduction ............................................................. 32 7.2. Materials and Method ............................................. 32 7.3. Results and Discussion ............................................ 34 8. Orientation-controlled CNF/CNC films prepared by electrospinning .................................................................... 37 8.1. Introduction ............................................................. 37 8.2. Materials and Method ............................................. 37 8.3. Results and Discussion ............................................ 39 9. Conclusion ...................................................................... 41 10. Reference ........................................................................ 43 | |
dc.language.iso | en | |
dc.title | 纖維素奈米微晶定向薄片壓電性質之改進與評估 | zh_TW |
dc.title | Improvement and Evaluation of Piezoelectric Properties of Cellulose Nanocrystal Oriented Sheet | en |
dc.type | Thesis | |
dc.date.schoolyear | 106-1 | |
dc.description.degree | 碩士 | |
dc.contributor.oralexamcommittee | ?山幹夫,小幡谷英一,陳洵毅 | |
dc.subject.keyword | 致動器,纖維素奈米微晶,壓電, | zh_TW |
dc.subject.keyword | Actuator,Cellulose nanocrystals,Piezoelectricity, | en |
dc.relation.page | 44 | |
dc.identifier.doi | 10.6342/NTU201800557 | |
dc.rights.note | 未授權 | |
dc.date.accepted | 2018-02-13 | |
dc.contributor.author-college | 生物資源暨農學院 | zh_TW |
dc.contributor.author-dept | 森林環境暨資源學研究所 | zh_TW |
顯示於系所單位: | 森林環境暨資源學系 |
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