ポリ(けい皮酸ビニル)

ポリ(けい皮酸ビニル) 価格

ポリ(けい皮酸ビニル) 化学特性,用途語,生産方法

• 解説

  ケイ皮酸ビニルの重合体．一般に，ケイ皮酸ビニルを重合させると，ケイ皮酸の二重結合位置での重合が起こり，ビニル基のみを開いた線状重合体が得られない．したがって，まずポリ(ビニルアルコール)を合成し，これにケイ皮酸基を結合させる方法をとるのが普通である．光によってケイ皮酸基内の炭素-炭素二重結合の位置で付加および環化反応を起こして架橋するために，溶剤に不溶となる．"この光による反応を利用して，感光性樹脂として広く写真製版，印刷，複写などのほか，金属やセラミックスの表面加工，精密加工などにも用いられている．[CAS 9050-06-0]
  森北出版「化学辞典（第2版）

• 化学的特性

  white to light yellow powder

• 合成

  Poly(vinyl cinnamates) (PVCi) can be prepared by esterification of the hydroxyl group in polyvinyl alcohol (PVA) and the carboxyl group in p-chlorocinnamic acid. All grafting modification was carried out in a four-necked flask equipped with a mechanical stirrer, con denser, and nitrogen inlet. PVA was dissolved in DMSO (5 wt% solution) at 80℃, certain amounts of cinnamic acid was added in PVA solution, the reaction mixture was stirred at 35℃ for 24 h with the catalysis of DCC and DMAP. At the end of the reaction, the product was precipitated twice in ethanol to completely remove the solvent. Then the product was purified by removing the unreacted cinnamic acid in extractor with ethanol and then dried under vacuum at 30℃ for 24 h. The modified PVCi was completely insoluble in water in which PVA had been freely soluble before graft modification. The DS was controlled by adjusting the molar ratio of cinnamic acid to the hydroxyl groups.
  
  [1] HAIYAN DU. The synthesis of poly(vinyl cinnamates) and its self-assembled structure[J]. Polymer Engineering and Science, 2013, 25 1: 1154-1160. DOI:10.1002/PEN.23370.
  

ポリ(けい皮酸ビニル) 生産企業

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ポリ(けい皮酸ビニル) スペクトルデータ(FT-IR、IR、Raman)

9050-06-0, ポリ(けい皮酸ビニル) キーワード