• 文献标题:   Photoactive graphene quantum dots/bacterial cellulose hydrogels: Structural, mechanical, and pro-oxidant study
  • 文献类型:   Article
  • 作  者:   MARKOVIC ZM, ZMEJKOSKI DZ, BUDIMIR MD, BUGAROVA N, KLEINOVA A, KUZMAN SB, SPITALSKY Z, PAVLOVIC VB, MILIVOJEVIC DD, MARKOVIC BMT
  • 作者关键词:   mechanical propertie, microscopy, porous material, spectroscopy, xray
  • 出版物名称:   JOURNAL OF APPLIED POLYMER SCIENCE
  • ISSN:   0021-8995 EI 1097-4628
  • 通讯作者地址:  
  • 被引频次:   2
  • DOI:   10.1002/app.51996 EA DEC 2021
  • 出版年:   2022

▎ 摘  要

Due to their unique structural properties bacterial cellulose (BC) hydrogels find possible usage in many fields such as cosmetology, food industry, or medicine. In this study, photoactive BC hydrogels are investigated through modifications of their structural, mechanical, and pro-oxidant properties resulting from graphene quantum dots (GQDs) encapsulation. Detailed structural analysis is conducted by atomic force microscopy, transmission electron microscopy and scanning electron microscopy, X-ray photoelectron spectroscopy, Fourier transform infrared spectroscopy, and X-ray diffraction method. Dynamic mechanical analysis is performed to study the changes in storage modulus, loss modulus and tan delta. Pro-oxidative properties of new designed composites are tested by electron paramagnetic resonance (EPR). Structural and mechanical analyses show successful encapsulation of GQDs into BC whereas EPR measurements indicate high potential of these composites for singlet oxygen production.