シリカゲル,澱粉の懸濁液の分散に対する各種燐酸塩の添加効果について

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  • Effects of Various Phospates on the Dispersion of Aqueous Silicagel and Starch Suspension
  • シリカゲル , デンプン ノ ケンダクエキ ノ ブンサン ニ タイスル カクシュ リンサンエン ノ テンカ コウカ ニ ツイテ

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As one of our many studies on the industrial utilization of polyphosptes, this experiment was carried out. Since polyphosphates has been used broadly for the manufacturing of fertilizers, foods, detergents, dentifrices, industrial water treatments etc. as ingredient of them, the measurments on the variation of dispersibility for the silicagel and starch suspension with some phosphats are important for studying the behavior of system containing such substance. The outline of results may be summarized in the following: (1). Effects of 3 sorts of polyphosphates such as sodium pyrophosphate, sodium tripolyphospnate, and sodium polyphospate (cr generaIly sodium hexameta phosphate) on the about 5.0% aqueous suspension of silicagel and starch are studied and the considerable increase of the former disrersion are observed, but the latter are only apprcciable. (2). For silicagel suspcnsion, each curve relating the ratios of Dispersion-quantities added shows that the increasing effect with these polyphosphates resembles each other, and in paticular sodium pyrophophate shows considerable effect. (3). Comparing these dispersibility experimets of silicagel with those of starch, it appars that the result obtain for silicagel is presumably ascribed to the dispersing effect coming from the adsorption of polyphosphates and the starch may be formed ester compound caused by the chemical reaction of these polyphosphate ions with the hydroxyl group in that.

浅岡等が従来行っている重合燐酸塩の利用に関連した多くの研究のうちで既発表のものは若干に過ぎない。本報告では工業用水処理としての珪酸塩の分散性の研究,食品化学関係での澱粉の分散性の研究とをかねた研究の一環として,種々の燐酸塩を添加し,その添加効果を調べるために行ったものである。

identifier:富山大学工学部紀要,14(1/2)

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