P-104 環状モノテルペンのポリスチレン溶解性(ポスター2,ポスター発表)

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概要

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• We examined the dissolution of polystyrene into cyclic monoterpenes present in tree essential oils, in order to develop an environmentally friendly shrinking agent for expanded polystyrene. The relationship between chemical structure of the monoterpenes and their dissolution power for polystyrene was studied through the solubility parameter (δ) and the apparent activation energy (E_a) for dissolution. (R)-Limonene and its structure isomers on a C=C bond have high solvent power for polystyrene. Their favorable solubility was explained by the solubility parameter. The occurrence of hydroxyl group in a solvent molecule, such as terpinen-4-ol, reduced the affinity for polystyrene. Bicyclic monoterpenes and 1,8-cineole, which have a sterically bulky structure, showed a limited dissolution power even though they have similar solubility parameters to that of (R)-limonene. Their bulky structures would interfere with the permeation of solvent into polystyrene matrix. Cyclic monoterpenes and polystyrene are recovered almost quantitatively by steam distillation of the polystyrene solution.

• 2010-01-20

著者

• 渡辺 翼

  北見工大化学システム工学

• 青山 政和

  北見工大バイオマスエネルギー研究推進センター

• 青山 政和

  北見工大北方圏バイオ資源創成研究推進センター

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