Abstract
In this paper, β-cyclodextrin(β-CD) was dissolved in N, N-dimethylformamide solution(DMF), and a large number of white crystals were precipitated after the solution was heated to 140 ℃. It was found that the precipitated crystals were β-CD sheet crystals by scanning electron microscopy(SEM) as well as infrared Spectroscopy(IR) and Nuclear magnetic resonance(NMR) . Thermogravimetric analysis(TGA) and differential scanning calorimetry (DSC) analysis showed that the sheet crystals had the same physical and chemical properties as β-CD raw materials. The X-rays diffraction(XRD) results showed that β-CD sheet had different crystalline structure from β-CD raw materials. The XRD patterns of β-CD crystal with open-chanel crystalline structure were simulated by Diamond software, which is consistent with that of β-CD sheet, indicating that β-CD sheet has ordered open-channel crystalline structure. Brunauer-Emmett-Tellern(BET) measurement and phenolphthalein adsorption experiment further confirmed that β-CD sheet had larger specific surface area and better adsorption performance than β-CD raw materials.
| Translated title of the contribution | Low Critical Dissolution Temperature Behavior of β-Cyclodextrin and Its Application in the Preparation of β-Cyclodextrin Sheet Crystal with Ordered Nano-channel |
|---|---|
| Original language | Chinese (Traditional) |
| Article number | 20220405 |
| Journal | Kao Teng Hsueh Hsiao Hua Heush Hsueh Pao/ Chemical Journal of Chinese Universities |
| Volume | 43 |
| Issue number | 11 |
| DOIs | |
| Publication status | Published - 10 Nov 2022 |