Formation of biodegradable polyesters membranes via thermally induce phase separation

• Tanaka Takaaki

  Department of Materials Science and Technology, Niigata University

• Tsuchiya Takashi

  Department of Materials Science and Technology, Niigata University

• Takahashi Hidema

  Department of Materials Science and Technology, Niigata University

• Taniguchi Masayuki

  Department of Materials Science and Technology, Niigata University

• Ohara Hitomi

  Bio-Plastic Project Department, Toyota Motor Co.

• Lloyd Douglas R.

  Department of Chemical Engineering, The University of Texas at Austin

書誌事項

タイトル別名

• Formation of Biodegradable Polyesters Membranes via Thermally Induced Phase Separation

抄録

Microfiltration membranes that can be composted after service were developed from biodegradable polyesters, poly(L-lactic acid) (PLLA) and poly(ε-caprolactone) (PCL). The membranes were formed via the thermally induced phase separation method. A 10 wt% PLLA solution in a mixed diluent of 1,4-dioxane and water (87:13 by weight) was prepared in a flat mold and quenched from 52°C (4°C above cloud point temperature) to 0°C. After diluent extraction, the membrane separated yeast cells (6 μm) from their suspensions. A PCL membrane formed by the same method did not reject yeast cells. PCL membranes formed by quenching a 16 wt% PCL solution to 0°C and quenching a 10 wt% PCL solution to –196°C did separate yeast cells from their suspensions. The permeation flux was much higher in the filtration of 1 kg·m^–3 yeast cell suspension with the PLLA and PCL membranes formed by quenching a 10 wt% PLLA or PCL solution to –196°C than in the filtration with the PLLA membrane formed by quenching a 10 wt% PLLA solution to 0°C. The higher flux would be due to the lower resistance of the membranes formed by liquid nitrogen quenching (–196°C) and the mode of depth filtration. Porous biodegradable microfiltration membranes prepared from these polymers have the potential to serve as disposable filters in food and biochemical industries.

収録刊行物

• JOURNAL OF CHEMICAL ENGINEERING OF JAPAN

  JOURNAL OF CHEMICAL ENGINEERING OF JAPAN 39 (2), 144-153, 2006

  公益社団法人 化学工学会

キーワード

• Biodegradable Polyesters
• Microporous Membrane
• Thermally Induced Phase Separation
• Poly(L-Lactic Acid)
• Poly(<I>ε</I>-Caprolactone)

詳細情報

• CRID: 1390001204569074816
• NII論文ID: 130000019244
• NII書誌ID: AA00709658
• DOI: 10.1252/jcej.39.144
• ISSN: 18811299
• ISSN: 00219592
• NDL書誌ID: 7873224
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I7873224
• Web Site: http://www.jstage.jst.go.jp/article/jcej/39/2/39_2_144/_pdf
• 本文言語コード: en
• データソース種別:
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