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首页> 外文期刊>Journal of Applied Polymer Science >Effect of carbon nanotubes on the biodegradability of poly(3-hydroxybutyrate-co-3-hydroxyvalerate) nanocomposites
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Effect of carbon nanotubes on the biodegradability of poly(3-hydroxybutyrate-co-3-hydroxyvalerate) nanocomposites

机译：碳纳米管对聚（3-羟基丁酸酯-CO-3-羟基戊羟苯甲酸盐）纳米复合材料的生物降解性的影响

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摘要

In this work, the effect of carbon nanotubes (CNT) on the biodegradability of poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) nanocomposites with 1 and 2% (w/w) of CNT has been evaluated by biodegradation assays in aqueous medium containing microorganisms extracted from garden soil. After biodegradation process, samples of PHBV and PHBV/CNT were compared regarding magnitude of degradation by visual macroscopic analysis, by measurement of percentage of weight loss and by scanning electron microscopy (SEM). The samples were further characterized regarding roughness and hydrophilicity by contact angle measurement. The final residue resultant from biodegradation of PHBV/CNT was analyzed in a FEI Inspect F50 field emission scanning electron microscope (FESEM) in order to verify the presence of CNT. Our results indicated that CNT did not compromise the biodegradability of PHBV matrix although the biodegradation rate has decreased with the increase of CNT content as shown by the weight loss measurements. SEM analysis of PHBV/CNT nanocomposites after biodegradation process showed increased amount of CNT exposed at the matrix surface suggesting the possibility of CNT recovering after the biodegradation. (c) 2019 Wiley Periodicals, Inc.
机译：在这项工作中，通过生物降解测定评估了碳纳米管（CNT）对具有1和2％（w / w）的CNT的聚（3-羟基丁酸酯-CO-3-羟基苯基）（PHBV）纳米复合材料的生物降解性的影响在含有从花园土壤中提取的微生物的水性培养基中。在生物降解过程之后，通过测量重量损失的百分比和通过扫描电子显微镜（SEM）来比较PHBV和PHBV / CNT的样品。通过测量重量损失的百分比和通过扫描电子显微镜（SEM）。通过接触角测量，进一步表征样品关于粗糙度和亲水性。从PHBV / CNT的生物降解的最终残留所得物在FEI检查F50场发射扫描电子显微镜（FESEM），以便验证CNT的存在进行分析。我们的研究结果表明，如图减肥测量CNT没有妥协PHBV矩阵的生物降解性，尽管生物降解速率已经与CNT含量的增加而下降。 PHBV / CNT纳米复合材料的SEM分析在生物降解过程中显示出在基质表面暴露的CNT量增加，表明生物降解后CNT回收的可能性。 （c）2019 Wiley期刊，Inc。

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