Kamel Nagwa A, Rozik Nehad N, Abd El-Messieh Salwa L
Microwave Physics and Dielectrics Department, Physics Research Institute. National Research Centre, Dokki, Cairo, Egypt.
Polymers and Pigments Department, Chemical Industrial Research Institute. National Research Centre, Dokki, Cairo, Egypt.
Sci Rep. 2025 May 5;15(1):15652. doi: 10.1038/s41598-025-97540-z.
In this work, novel polymeric blends were prepared from polyvinyl chloride (PVC) and silkworm cocoon waste (SCW), that were defective cocoons excluded during the silk-making process in the ratio 50:50 w/w. These blends were incorporated with moringa seed oil (MSO) as a bio-based plasticizer with different concentrations (1, 2, and 3%) to obtain a final bioplastic with superior antimicrobial properties. The new composites are characterized through Scanning Electron Microscope (SEM), Fourier Transmission Infrared Spectroscopy (FTIR), contact angle measurements, Thermogravimetric analysis (TGA), dielectric, mechanical, and antimicrobial properties. Results of the study pointed to improved linking between the blend phases after incorporating 2% MSO. The composites could inhibit the growth of all the tested microorganisms. The conductivity σ values increased by increasing the content of MSO in the composite. The results demonstrate the potential of the new MSO plasticized composites as promising candidates for use in hospitals as antimicrobial surfaces.
在这项工作中，新型聚合物共混物由聚氯乙烯（PVC）和蚕茧废料（SCW）制备而成，其中蚕茧废料是缫丝过程中被剔除的有缺陷蚕茧，二者的重量比为50:50。这些共混物与不同浓度（1%、2%和3%）的辣木籽油（MSO）作为生物基增塑剂混合，以获得具有优异抗菌性能的最终生物塑料。通过扫描电子显微镜（SEM）、傅里叶透射红外光谱（FTIR）、接触角测量、热重分析（TGA）、介电、机械和抗菌性能对新型复合材料进行了表征。研究结果表明，加入2%的MSO后，共混相之间的连接得到了改善。该复合材料能够抑制所有受试微生物的生长。复合材料的电导率σ值随着MSO含量的增加而增大。结果表明，新型MSO增塑复合材料有潜力作为医院抗菌表面的理想候选材料。
