Volume 40 Issue 3
Mar.  2023
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WANG Jin, BAI Bo, LUO Yu, et al. Preparation and photo-thermal controlled release properties of nanodiamond/yeast-chitosan composite microspheres[J]. Acta Materiae Compositae Sinica, 2023, 40(3): 1676-1685. doi: 10.13801/j.cnki.fhclxb.20220616.001
Citation: WANG Jin, BAI Bo, LUO Yu, et al. Preparation and photo-thermal controlled release properties of nanodiamond/yeast-chitosan composite microspheres[J]. Acta Materiae Compositae Sinica, 2023, 40(3): 1676-1685. doi: 10.13801/j.cnki.fhclxb.20220616.001

Preparation and photo-thermal controlled release properties of nanodiamond/yeast-chitosan composite microspheres

doi: 10.13801/j.cnki.fhclxb.20220616.001
Funds:  Shaanxi Provincial Key Research and Development Program of Science and Technology (211429220192); Natural Science Basic Research Program of Shaanxi Province (2021SF-497; 2022TD-04); Water Conservancy Science and Technology Project of Shaanxi Province (2015slkj-02); Basic Research Project of the Central Universities (CHD300102291403; CHD300102290103; CHD300102292903); Chang'an University Innovation and Entrepreneurship Training Program for College Students in 2021 (S202110710308)
  • Received Date: 2022-04-27
  • Accepted Date: 2022-06-03
  • Rev Recd Date: 2022-05-17
  • Available Online: 2022-06-16
  • Publish Date: 2023-03-15
  • It is important to develop high-performance functional photo-thermal materials and establish controlled drug release models for the development of intelligent transportation materials for pesticides. Herein, nanodiamond (DND) was employed to prepare novel nanodiamond/yeast-chitosan (DND/YS-CS) composite hydrogel microspheres which had a cross-linked network structure through alkali gelation method. The microstructure, mechanical resistance and photo-thermal conversion performance of the composites were investigated. Moreover, indole-3-butyric acid (IBA) was used as a model to discuss the loading and controlled drug release and reveal the photo-thermal controlled release mechanism of IBA by DND/YS-CS. The results show that the composite microspheres has good mechanical properties, and the water retention capacity of the composite microspheres with DND content of 2.0 mg/mL reached 70.5% and 74% after ultrasonication and centrifugation for 1 h, respec-tively. The maximum temperature of the composites can reach to 37.6℃ under one sunlight intensity, proving that the composites possess excellent photothermal conversion ability. The maximum adsorption of IBA is 41.73 μg/mg when the composites have a DND concentration of 1.2 mg/mL. Finally, the controled drug release pattern of the composites is in accordance with the Korsmeyer-Peppas model, which exhibits an obvious stimulus response behavior and an "on-off" pattern of drug release under light.


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