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Hybrid Ni‐Al layered double hydroxide/graphene reinforced polyvinyl alcohol/starch blends
Polymer Composites ( IF 4.8 ) Pub Date : 2020-07-06 , DOI: 10.1002/pc.25708 Sreekumar PA 1 , Hafiz Muhammad Afzal 2 , Mamdouh A. Al‐Harthi 2
Polymer Composites ( IF 4.8 ) Pub Date : 2020-07-06 , DOI: 10.1002/pc.25708 Sreekumar PA 1 , Hafiz Muhammad Afzal 2 , Mamdouh A. Al‐Harthi 2
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Ni‐Al layered double hydroxide/graphene hybrid fillers were prepared via co‐precipitation method. The structural and thermal studies of these fillers were conducted using X‐ray diffractometer (XRD) and thermogravimetric analyzer (TGA). Subsequently, by using solution casting method, these fillers were introduced into the polyvinyl alcohol (PVA)/starch matrix as reinforcing agent. For the composites, characteristic peaks of Ni‐Al‐LDH/graphene disappeared irrespective of filler content. TGA showed an increase in the initial degradation temperature (234‐242 °C) when filler content was increased from 0 to 2 wt%. Differential scanning calorimeter (DSC) analysis exhibited an increase in heat of fusion (ΔHm), melting temperature (Tm) and percentage crystallinity values for the PVA/ starch matrix having 1 wt% of filler. Similar trend was observed for tensile strength and Young's modulus of composites. Scanning electron microscopy (SEM) showed a homogeneous distribution of filler throughout the matrix.
中文翻译：
镍铝混合层状双氢氧化物/石墨烯增强聚乙烯醇/淀粉共混物
Ni-Al层状双氢氧化物/石墨烯杂化填料是通过共沉淀法制备的。使用X射线衍射仪（XRD）和热重分析仪（TGA）进行了这些填料的结构和热学研究。随后，通过溶液浇铸法，将这些填料作为增强剂引入聚乙烯醇（PVA）/淀粉基质中。对于复合材料，无论填料含量如何，Ni-Al-LDH /石墨烯的特征峰均消失。当填料含量从0重量％增加到2重量％时，TGA显示出初始降解温度（234-242°C）增加。差示扫描量热仪（DSC）分析显示熔化热（ΔH m），熔化温度（T m）和具有1 wt％填料的PVA /淀粉基质的结晶度百分比值。对于复合材料的拉伸强度和杨氏模量，观察到相似的趋势。扫描电子显微镜（SEM）显示填料均匀分布在整个基质中。
更新日期：2020-07-06
中文翻译：
镍铝混合层状双氢氧化物/石墨烯增强聚乙烯醇/淀粉共混物
Ni-Al层状双氢氧化物/石墨烯杂化填料是通过共沉淀法制备的。使用X射线衍射仪（XRD）和热重分析仪（TGA）进行了这些填料的结构和热学研究。随后，通过溶液浇铸法，将这些填料作为增强剂引入聚乙烯醇（PVA）/淀粉基质中。对于复合材料，无论填料含量如何，Ni-Al-LDH /石墨烯的特征峰均消失。当填料含量从0重量％增加到2重量％时，TGA显示出初始降解温度（234-242°C）增加。差示扫描量热仪（DSC）分析显示熔化热（ΔH m），熔化温度（T m）和具有1 wt％填料的PVA /淀粉基质的结晶度百分比值。对于复合材料的拉伸强度和杨氏模量，观察到相似的趋势。扫描电子显微镜（SEM）显示填料均匀分布在整个基质中。
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