Study on chitosan/carbon nanotubes modified materials used to enhance the performance of dental binder
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서지정보
ㆍ발행기관 : 한국탄소학회
ㆍ수록지정보 : Carbon letters / 33권 / 6호
ㆍ저자명 : Tingyu Tian, Yuping Cai, Shimao Yang, Yanwei Guo, Wei Zhou
ㆍ저자명 : Tingyu Tian, Yuping Cai, Shimao Yang, Yanwei Guo, Wei Zhou
목차
Study on chitosancarbon nanotubes modified materials used to enhance the performance of dental binderAbstract
1 Introduction
2 Experimental
2.1 Materials
2.2 Preparation of carbon nanotubes grafted hydroxymethyl chitosan composites (MWNT-CS)
2.3 Preparation samples for tensile bonding strength test
2.4 Biocompatibility test
3 Results and discussion
4 Conclusion
References
영어 초록
In this study, we successfully grafted chitosan (CS) onto multi-walled carbon nanotubes (MWCNTs) to enhance their properties and potential applications in the biomedical field. FTIR spectroscopy confirmed the successful covalent bonding of CS onto MWCNTs, indicated by the new absorption peak of the amide bond (–CONH–). Thermal analysis showed that the modified MWCNTs (MWCNT-CS) had significant weight loss around 260 °C, suggesting the decomposition of hydroxypropyl chitosan, and confirming its presence in the nanocomposite. SEM images revealed that CS grafting improved the dispersibility of MWCNTs, a property crucial for their use as nanofillers in polymers. Moreover, the micro-tensile bond strength of dentin surface increased with increasing MWCNT-CS concentrations, indicating the potential of MWCNT-CS as a pretreatment for dentin bonding. After simulated aging, the bond strength remained significantly higher for MWCNT-CS groups compared to those without pretreatment. In biocompatibility assessment using the MTT assay, MWCNT-CS showed higher cell viability than MWCNT, suggesting improved biocompatibility after CS modification. The results of this study suggest that CS-modified MWCNTs could be promising materials for applications in dentin bonding, dentin mineralization, bone scaffolding, implants, and drug delivery systems.참고 자료
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