高分子の分別沈殿に関する研究(第4報) : CMCナトリウム塩の分別沈殿および沈殿濁度滴定について

• 中垣 正幸

• 砂田 久一

• 近藤 明

• 寺尾 純一

書誌事項

タイトル別名

• Studies on the Fractional Precipitation of Polymers. IV : Fractional Precipitation and Turbidimetric Titration of Sodium Carboxymethyl Cellulose
• 高分子の分別沈殿に関する研究-4-CMCナトリウム塩の分別沈殿および沈殿濁度滴定について
• コウブンシ ノ フンベツ チンデン ニ カンスル ケンキュウ 4 CMC ナトリウムエン ノ フンベツ チンデン オヨビ チンデン ダクド テキテイ ニ ツイテ

抄録

A mixture of water and alcohol containing sodium iodide was selected as the precipitant to be used in fractional precipitation of sodium carboxymethyl cellulose. The condition of fractionation was examined and raw sodium carboxymethyl cellulose was divided into eleven fractions. The substitution degree and molecular weight of each fraction were measured. From these results the molecular weight distribution in the raw material was obtained. Then, the turbidimetric titrations of the fractions 2, 4, 6, 8 and 10 were carried out. From these results, it was obtained that the relation between log C_p and (v₂) ppt, where C_p is the polymer concentration and (v₂) ppt is the volume fraction of the precipitant added when the precipitation starts, was linear for each polymer fraction and parallel to one another. These results were in good agreement with Morey-Tamblyn's empirical equation. The final equation obtained for this system was ; (v₂) ppt=-0.050 log C_p+0.918 M^-0.954.

収録刊行物

• 薬学雑誌

  薬学雑誌 89 (2), 139-144, 1969

  公益社団法人 日本薬学会

キーワード

• Pharmaceutical Science
• Pharmacology

詳細情報

• CRID: 1390001206214968960
• NII論文ID: 110003654036
• NII書誌ID: AN00284903
• DOI: 10.1248/yakushi1947.89.2_139
• ISSN: 13475231
• ISSN: 00316903
• NDL書誌ID: 8462884
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I8462884
• Web Site: https://www.jstage.jst.go.jp/article/yakushi1947/89/2/89_2_139/_pdf
• Web Site: https://search.jamas.or.jp/link/ui/1970106162
• データソース種別:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可