Degradation of Polyacrylate in the Outdoor Agricultural Soil Measured by FTIR-PAS and LIBS
Degradation of Polyacrylate in the Outdoor Agricultural Soil Measured by FTIR-PAS and LIBS
复制标题
用 FTIR-PAS 和 LIBS 测量室外农业土壤中聚丙烯酸酯的降解
DOI：
10.3390/polym10121296
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发表时间：
2018-12-01
期刊：
影响因子：
5
通讯作者：
Zhou, Jianmin
中科院分区：
文献类型：
--
作者：
Liang, Dong;Du, Changwen;Zhou, Jianmin
近年来，聚丙烯酸酯（PA）已被应用于包膜控释肥料（CRF）中，但土壤对PA降解的影响尚未得到评价。采用室外农用土壤埋置试验，研究了PA膜在土壤中12个月的降解情况。定期从土壤中采集残留降解膜，采用扫描电镜、傅里叶变换红外光声光谱（FTIR-PAS）和激光诱导击穿光谱（LIBS）对降解膜进行分析。降解过程中PA分子中C-H和C=O基团浓度降低，C、O、K、Si元素浓度升高。PA的表面变得粗糙，PA的降解发生在表面层。主成分分析（PCA）结果表明，土壤对PA有入侵作用。结果表明，PA应用于CRF时是环境友好的。采用FTIR-PAS和LIBS技术对聚合物降解过程进行了原位表面分析。
Recently, polyacrylates (PA) have been applied in coated controlled-release fertilizer (CRF), but the impacts of the soil on the degradation of PA have not been evaluated. In this study, an outdoor agriculture soil buried test was carried out for 12 months to investigate the degradation of PA films. The residual degraded films were taken regularly from the soil and analyzed by SEM, Fourier transform infrared photoacoustic spectroscopy (FTIR-PAS) and laser-induced breakdown spectroscopy (LIBS). The concentration of C–H and C=O molecular groups of PA were decreased, and the element concentrations of C, O, K, Si of PA were increased under the degradation process. The surface of PA became rough and the degradation of PA occurred on the surface layer. Principal component analysis (PCA) showed that soil invaded PA. The results indicated that PA were environmentally friendly when applied to CRF. FTIR-PAS and LIBS were advanced in the in-situ surface analysis of the degradation process of the polymer.