化学
咖啡因
结晶度
复合材料
复合数
填料(材料)
聚合物
成核
材料科学
有机化学
医学
内分泌学
作者
Dorota Tomczak,Magdalena Woźniak,Izabela Ratajczak,A. Sip,Marlena Baranowska,Karol Bula,Iveta Čabalová,Tatiana Bubeníková,Sławomir Borysiak
标识
DOI:10.1080/02773813.2023.2237498
摘要
Polymer composites, based on the wood flour originating from an invasive black cherry (Prunus serotina Ehrh.) treated with caffeine to achieve increased bio-resistance, were obtained in this study. The caffeine-treated wood had a significant effect on the supermolecular structure of polymer matrix, resulting in a high content of polymorphic β-PP phase, as well as an increase in nucleation activity of wood surface. The caffeine treatment of wood was an effective method of achieving increased resistance of composites to selected fungi and bacteria while maintaining good mechanical strength and thermal resistance. Addition of black cherry wood to polymer matrix induced inhibition of the release of volatile organic compounds. Increased resistance to fungi and bacteria depended on formation a significant amount of the β-phase up to 35% in the composite with 30% of caffeine-treated wooden filler and a simultaneous decrease in crystallinity from 52% for pure PP to 45% for mentioned composite.
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