Fabrication of fibrous boron carbide from condensed boric acid-polyol product fiber

• Project/Area Number: 16K21067
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Polymer/Textile materials; Inorganic materials/Physical properties
• Research Institution: Shinshu University
• Principal Investigator: KAKIAGE Masaki 信州大学, 先鋭領域融合研究群国際ファイバー工学研究所, 助教(特定雇用) (90567249)
• Project Period (FY): 2016-04-01 – 2018-03-31
• Project Status: Completed (Fiscal Year 2017)
• Budget Amount: ¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000); Fiscal Year 2017: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000); Fiscal Year 2016: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
• Keywords: 炭化ホウ素 / 前駆体 / 縮合物 / 繊維 / ポリビニルアルコール / ポリオール / 電界紡糸 / 熱炭素還元 / 繊維化 / 前駆体構造 / 低温合成 / ホウ酸‐ポリオール縮合物 / セラミックス / 多孔質炭素

Outline of Final Research Achievements

A condensed boric acid (H3BO3)-poly(vinyl alcohol) (PVA) product fiber was prepared by electrospinning. A boron carbide (B4C) precursor prepared from the condensed H3BO3-PVA product fiber by thermal decomposition in air had fibrous form and the microstructure consisted of highly dispersed boron oxide (B2O3) and carbon components. The morphology of B4C synthesized from the fibrous precursor exhibited characteristic connected fine particles.

Research Products

• [Journal Article] Effect of calcium carbonate particle size on formation and morphology of calcium hexaboride powder synthesized from condensed boric acid-poly(vinyl alcohol) product (2018)
  • Author(s): Masaki Kakiage, Shuhei Shiomi, Tomoyo Ohashi, and Hidehiko Kobayashi
  • Journal Title: Advanced Powder Technology Volume: 29 Issue: 1 Pages: 36-42
  • DOI: 10.1016/j.apt.2017.10.004
  • Peer Reviewed
• [Presentation] Effect of polyol on morphology of calcium hexaboride powder synthesized from condensed boric acid-polyol product (2018)
  • Author(s): Tomoyo Ohashi, Hidehiko Kobayashi, Masaki Kakiage
  • Organizer: 4th Gunma International Symposium on Membranes, 2D Matters and Device Applications (GIS 2018)
  • Int'l Joint Research
• [Presentation] Low-temperature synthesis of boron carbide powder by carbothermal reduction using polyol (2018)
  • Author(s): Masaki Kakiage, Hidehiko Kobayashi
  • Organizer: 4th Gunma International Symposium on Membranes, 2D Matters and Device Applications (GIS 2018)
  • Int'l Joint Research
• [Presentation] ホウ酸‐ポリビニルアルコール縮合物繊維を用いた炭化ホウ素の合成 (2018)
  • Author(s): 撹上将規、藪谷和眞
  • Organizer: 日本セラミックス協会2018年年会
• [Presentation] 有機化合物を用いた前駆体構造制御によるホウ化物粉末の低温合成 (2018)
  • Author(s): 撹上将規
  • Organizer: 日本セラミックス協会2018年年会
  • Invited
• [Presentation] ホウ酸－マンニトール縮合物を用いた六ホウ化カルシウム粉末の合成 (2017)
  • Author(s): 大橋知世、小林秀彦、撹上将規
  • Organizer: 日本セラミックス協会2017年年会
  • Place of Presentation: 日本大学駿河台キャンパス（東京都千代田区）
  • Year and Date: 2017-03-17
• [Presentation] ホウ酸‐ポリビニルアルコール縮合物の繊維化を利用した炭化ホウ素前駆体の形成 (2017)
  • Author(s): 藪谷和眞、撹上将規
  • Organizer: 平成29年度繊維学会年次大会
• [Presentation] Effects of starting materials on morphology of calcium hexaboride powder synthesized from condensed boric acid-polyol product (2017)
  • Author(s): Masaki Kakiage, Tomoyo Ohashi, Hidehiko Kobayashi
  • Organizer: 9th International Symposium on Nitrides and Related Materials (ISNT2017) & 5th International Symposium on SiAlONs and Non-oxides (ISSNOX5)
  • Int'l Joint Research
• [Presentation] 有機化合物を用いた熱炭素還元法によるホウ素系非酸化物セラミックス粉末の低温合成 (2016)
  • Author(s): 撹上将規、柳瀬郁夫、小林秀彦
  • Organizer: 日本セラミックス協会関西支部第19回若手フォーラム
  • Place of Presentation: 関西セミナーハウス修学院きらら山荘（京都府京都市）
  • Year and Date: 2016-10-06
• [Presentation] セラミックスのソフト化学合成における高分子前駆体 (2016)
  • Author(s): 撹上将規
  • Organizer: 第11回相模ケイ素・材料フォーラム・第61回湘北地区懇話会講演会
  • Place of Presentation: 公益財団法人相模中央化学研究所（神奈川県綾瀬市）
  • Year and Date: 2016-08-01
  • Invited