吴堃同学的工作发表在“JOURNAL OF MATERIALS CHEMISTRY B”上

Synthesis of novel multi-hydroxylN-halamine precursors based on barbituric acid and their applications in antibacterial poly(ethylene terephthalate) (PET) materials

作者:Wu, K (Wu, Kun); Li, JQ (Li, Jianqiao); Chen, X (Chen, Xin); Yao, JR (Yao, Jinrong)[ 1 ] ; Shao, ZZ (Shao, Zhengzhong)

JOURNAL OF MATERIALS CHEMISTRY B

卷: 8

期: 37

页: 8695-8701

DOI: 10.1039/d0tb01497d

出版年: OCT 7 2020

文献类型:Article

摘要

Two novel multi-hydroxylN-halamine precursors were successfully synthesized in a green and facile wayviaKnoevenagel condensation reaction between barbituric acid and an aldehyde (citral or cinnamaldehyde), followed by a hydroxylation reaction with hydrogen peroxide.H-1-NMR and FT-IR spectral analyses confirmed their formation. Through the melt-blending process, the multi-hydroxyl derivatives of barbituric acid were introducedviatransesterification into poly(ethylene terephthalate) (PET) at 265 degrees C in a rheometer. The crystallization behaviors of the modified PET samples were investigated using X-ray diffraction (XRD), differential scanning calorimetry (DSC), and polarized optical microscopy (POM) analyses. The results showed that the crystallization temperature and crystallization rate of PET were significantly improved upon the introduction of the precursor. Meanwhile, the relative crystallinity of the modified PET samples increased with an increase in the dosage of theN-halamine precursor. After the treatment with sodium hypochlorite solution, the PET surfaces modified withN-halamine derivatives would impart powerful antibacterial properties and achieve 100% killing ofStaphylococcus aureus(ATCC 6538) andEscherichia coli(CMCC44103) cells within 30 min. Therefore, the multi-hydroxylN-halamine precursors exhibit great potential as bifunctional additives (nucleating and antibacterial agents) in the manufacturing of functional PET materials.