Thermal conductive properties of cellulose nanofibers

• Project/Area Number: 26892027
• Research Category: Grant-in-Aid for Research Activity Start-up
• Allocation Type: Single-year Grants
• Research Field: Wood science
• Research Institution: Rikkyo University
• Principal Investigator: Uetani Kojiro 立教大学, 理学部, 助教 (20733306)
• Project Period (FY): 2014-08-29 – 2016-03-31
• Project Status: Completed (Fiscal Year 2015)
• Budget Amount: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000); Fiscal Year 2015: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000); Fiscal Year 2014: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
• Keywords: 熱伝導 / セルロース / フィルム材料 / シート材料 / 熱物性 / ナノ材料

Outline of Final Research Achievements

This study revealed that the nonwoven cellulose nanofiber sheet had ~3 times greater thermal conductivity compared with the existing plastic films. The pretreatment method allowing to measure the thermal diffusivity of translucent film materials through the periodic heating method. After that the non woven sheets were produced using various cellulose resources and their thermal conductive properties were investigated. As a result, the size (width) of cellulose nanofiber was found to effect on the thermal diffusivity.

Research Products

• [Journal Article] Crystallite Size Effect on Thermal Conductive Properties of non woven Nanocellulose Sheets (2015)
  • Author(s): Kojiro Uetani, Takumi Okada, Hideki T. Oyama
  • Journal Title: Biomacromolecules Volume: 16 Issue: 7 Pages: 2220-2227
  • DOI: 10.1021/acs.biomac.5b00617
  • Peer Reviewed / Acknowledgement Compliant
• [Presentation] Thermal conductive properties of nanocellulose materials (2015)
  • Author(s): Takumi Okada, Kojiro Uetani, Hideko T. Oyama
  • Organizer: The 2015 International Chemical Congress of Pacific Basin Societies
  • Place of Presentation: ホノルル、ハワイ（アメリカ合衆国）
  • Year and Date: 2015-12-19
  • Int'l Joint Research
• [Presentation] 天然由来の高熱伝導ナノファイバー材料 (2015)
  • Author(s): 岡田拓巳、上谷幸治郎、大山秀子
  • Organizer: 第24回ポリマー材料フォーラム
  • Place of Presentation: タワーホール船堀（東京都江戸川区）
  • Year and Date: 2015-11-27
• [Presentation] 高熱伝導性ナノセルロースシート (2015)
  • Author(s): 岡田拓巳、上谷幸治郎、大山秀子
  • Organizer: 成型加工シンポジア’15
  • Place of Presentation: 福岡大学（福岡県福岡市）
  • Year and Date: 2015-11-03
• [Presentation] ナノセルロース不織シートの熱拡散率における結晶子サイズ効果 (2015)
  • Author(s): 岡田拓巳、上谷幸治郎、大山秀子
  • Organizer: 第36回熱物性シンポジウム
  • Place of Presentation: 東北大学（宮城県仙台市）
  • Year and Date: 2015-10-21
• [Presentation] セルロースナノ材料の熱伝導特性 (2015)
  • Author(s): 岡田拓巳、上谷幸治郎、大山秀子
  • Organizer: 平成27年度繊維学会年次大会
  • Place of Presentation: タワーホール船堀（東京都江戸川区）
  • Year and Date: 2015-06-10 – 2015-06-12
• [Presentation] セルロース系ナノ材料の熱伝導特性 (2015)
  • Author(s): 岡田拓巳、上谷幸治郎、大山秀子
  • Organizer: 第64回高分子学会年次大会
  • Place of Presentation: 札幌コンベンションセンター（北海道札幌市）
  • Year and Date: 2015-05-27 – 2015-05-29