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首页> 外文期刊>Journal of Polymers and the Environment >Biodegradable nanocomposites based on poly(butylene succinate)/organoclay
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Biodegradable nanocomposites based on poly(butylene succinate)/organoclay

机译：基于聚丁二酸丁二酯/有机粘土的可生物降解的纳米复合材料

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In this work, we try to incorporate the inorganic system into the biodegradable polymers to compose an organic/inorganic polymer hybrid. Various nanocomposites of poly(butylene succinates) (PBS) with different ratios of organically modified layered silicates (OMLS) prepared by solution blending were investigated. The OMLS used for the preparation of nanocomposites were functionalized ammonium salts modified montmorillonite. The effects of OMLS on the nanocomposites were investigated by XRD, TEM, DMA and TGA in the aspect of the d-spacing of clay, mechanical and thermal properties. Interestingly, all these nanocomposites exhibited improved properties when compared with the pristine PBS sample. XRD indicates that the layers of clay were intercalated by the modifiers, and the interlayer distance of organoclay in the nanocomposites could be extended to about 29.4 A. Moreover, the thermal stability of the nanocomposites was enhanced by the addition of organoclay via TGA study, closely related to the organoclay content in the PBS matrix. DMA data shows that the storage and loss moduli were concurrently enhanced by the addition of organoclay as compared to the pristine PBS sample. Moreover, the glass transition temperatures also increased about 5 to 20℃ (from DMA, peakrnof tanδ) for the various organoclay-containing samples. The enhanced mechanical and thermal properties can be achieved from these organoclay modified-nanocomposites.
机译：在这项工作中，我们尝试将无机系统纳入可生物降解的聚合物中，以构成有机/无机聚合物杂化体。研究了通过溶液共混制备的具有不同比例的有机改性层状硅酸盐（OMLS）的聚丁二酸丁二酯（PBS）的各种纳米复合材料。用于制备纳米复合材料的OMLS是功能化的铵盐改性的蒙脱土。通过XRD，TEM，DMA和TGA研究了OMLS对纳米复合材料的影响，涉及了粘土的d间距，力学和热学性能。有趣的是，与原始PBS样品相比，所有这些纳米复合材料均表现出改进的性能。 X射线衍射（XRD）表明粘土层被改性剂插层，纳米复合材料中有机粘土的层间距离可扩展到约29.4 A。此外，通过TGA研究，通过添加有机粘土可以增强纳米复合材料的热稳定性。与PBS基质中有机粘土含量有关。 DMA数据表明，与原始PBS样品相比，通过添加有机粘土同时提高了储能模量和损失模量。此外，各种含有机粘土的样品的玻璃化转变温度也提高了约5至20℃（从DMA，峰值tanδ升高）。这些有机粘土改性的纳米复合材料可以实现增强的机械性能和热性能。

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