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首页> 外文期刊>Journal of Applied Polymer Science >Effectiveness of the preparation of maleic anhydride grafted poly (lactic acid) by reactive processing for poly (lactic acid)/carbon nanotubes nanocomposites
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Effectiveness of the preparation of maleic anhydride grafted poly (lactic acid) by reactive processing for poly (lactic acid)/carbon nanotubes nanocomposites

机译：用聚（乳酸）/碳纳米管纳米复合材料的反应加工对马来酸酐接枝聚（乳酸）制备的有效性

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摘要

An effective strategy to increase the properties of poly (lactic acid) (PLA) is the addition of carbon nanotubes (CNT). In this work, aiming to improve the surface adhesion of PLA and CNT a new compatibilizer agent was prepared by reactive processing, PLA grafted maleic anhydride (PLA-g-MA) using benzoyl peroxide and maleic anhydride. The effectiveness of the PLA-g-MA as a compatibilizer agent was verified for PLA/PLA-g-MA/CNT nanocomposites. PLA and PLA-g-MA samples were characterized by Fourier transform infrared spectroscopy (FT-IR) to confirm the grafting reaction of maleic anhydride on PLA chains and by rheological analysis to prove the changes in the matrix PLA after the graphitization reaction. Thermal (differential scanning calorimetry and thermogravimetric analysis), mechanical tests (Izod impact strength and tensile test), and morphological characterization were used to verify the effect of the compatibilizer agent. The preparation of PLA-g-MA by reactive extrusion processing proved satisfactory and the nanocomposites presented good thermal and mechanical properties. The addition of the PLA-g-MA also contributed to the greater distribution of CNT and can be used as an alternative for the production of PLA/CNT nanocomposites.
机译：增加聚乳酸（PLA）性能的有效策略是添加碳纳米管（CNT）。本论文以提高聚乳酸和碳纳米管的表面附着力为目的，采用反应工艺制备了一种新型的相容剂，即聚乳酸接枝马来酸酐（PLA-g-MA）。对PLA/PLA-g-MA/CNT纳米复合材料，验证了PLA-g-MA作为相容剂的有效性。通过傅立叶变换红外光谱（FT-IR）对PLA和PLA-g-MA样品进行表征，以确认马来酸酐在PLA链上的接枝反应，并通过流变学分析证明石墨化反应后基质PLA的变化。热（差示扫描量热法和热重分析）、机械试验（伊佐德冲击强度和拉伸试验）和形态表征用于验证相容剂的效果。通过反应挤出工艺制备了PLA-g-MA，其纳米复合材料具有良好的热性能和力学性能。PLA-g-MA的加入也有助于CNT的更大分布，并可作为PLA/CNT纳米复合材料生产的替代品。

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