期刊文献+
共找到1篇文章
< 1 >
每页显示 20 50 100
Obtaining and Characterization of Biodegradable Composites Reinforced with Microcrystalline Cellulose Fillers 被引量:1
1
作者 lucas viana costa Gisele C. Valle Iulianelli +1 位作者 Paulo Sérgio Rangel C. da Silva Fernanda A. dos Santos 《Materials Sciences and Applications》 2021年第12期561-577,共17页
In recent years, there has been a growing discussion about the problems related to the massive use of many synthetic plastic materials, which inevitably leads to an increase in environmental pollution caused by the in... In recent years, there has been a growing discussion about the problems related to the massive use of many synthetic plastic materials, which inevitably leads to an increase in environmental pollution caused by the inappropriate disposal of these materials. In this sense, biodegradable materials have been a subject of great interest, as they are a real alternative to replace these materials and tackle this issue. In this work, fully biodegradable composites were prepared by solution casting method. Microcrystalline cellulose (MCC) and treated microcrystalline cellulose (TMCC) were separately incorporated into biodegradable PLA and PHB matrices at ratios of 3, 5 and 7 wt% and the properties of the obtained biocomposites were evaluated by TGA, DSC, XRD and TD-NMR. From thermal analyses, it was seen that TMCC resulted in better thermal stability and 3 wt% of filler, in general, promoted a more pronounced thermal improvement. Furthermore Tg, Tc and Tm remained practically unchanged after MCC and TMCC addition. From XRD it was seen that the cellulose fillers influence in different ways the matrices, promoting increase or decrease in the degree of crystallinity. Finally, the results obtained by TD-NMR showed a decrease in the T<sub>1</sub>H values for all prepared biocomposites, indicating a good dispersion of the cellulose fillers in the matrices and pointed that the systems containing 3 wt% of cellulose fillers were the most homogeneous formulations. 展开更多
关键词 PHB PLA Microcrystalline Cellulose BIOCOMPOSITES TGA DSC XRD TD-NMR
下载PDF
上一页 1 下一页 到第
使用帮助 返回顶部