Cyclodextrin Polymers (CDP)

Cyclodextrin polymer (CDP) is a three-dimensionally cross-linked compound that has both solubility in water and organic solvents. CDP is employed in a lot of fields due to high adsorption of SDS, polyphenols, flavonoids, and indoles.

Features

  • Soluble in both aqueous and organic solvents
  • Allows selective inclusion of light organic molecules
  • Gradually releases compound trapped in the inclusion complex
  • Allows easy release of trapped compounds within methanol and other organic solvents

Applications

Adsorption Rate of Bisphenol A

α-CDP

β-CDP

γ-CDP

Adsorption rate (%)

20 - 40

60 - 80

40 - 60

Adsorption Rate of SDS by Cyclodextrin Polymer

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Temperature Effects

Temperature

20°C

4°C

Adsorption Rate

92.4 %

90.4 %

pH and Sodium Effects

Solvent

H2O

0.1M HCI

0.1M NaOH

0.1M NaCl

Adsorption rate

92.4 %

99.7 %

99.9 %

99.4 %

Adsorption Rate of Various Surfactants by Cyclodextrin Polymer

Surfactant

Polyoxyethylene
Octyl phenyl ether

Sodium Alkylbenzene Sulfonate

Cetylpyridinium Chloride

CDP

α

β

γ

α

β

γ

α

β

γ

Adsorption rate

96.3 %

99.3 %

99.2 %

96.4 %

94.3 %

88.4 %

94.2 %

96.6 %

93.8 %

Adsorption Rate of Organic Compounds by Cyclodextrin Polymer

Organic Compound

α-CDP

β-CDP

γ-CDP

Flavone

96.5 %

98.9 %

97.1 %

Flavonol

73.9 %

93.2 %

83.8 %

Flavanone

92.3 %

97.8 %

94.7 %

Gallic acid

82.2 %

59.6 %

65.0 %

Catechin

56.0 %

97.5 %

66.7 %

Epigallocatechin gallate

90.5 %

83.2 %

86.6 %

Quercetin

96.9 %

98.5 %

97.9 %

Hesperidin

35.1 %

86.1 %

77.7 %

Daidzin

61.1 %

93.4 %

86.4 %

Genistin

92.0 %

96.7 %

96.2 %

Indoles

90.6 %

93.6 %

90.1 %

Indoleacetic acid

85.6 %

87.6 %

72.8 %

Yohimbine

70.2 %

93.2 %

60.4 %

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