改性造纸黑液木质素AOL及其降解产物的谱学研究

为了解改性造纸黑液木质素及其降解产物的结构特征,对从造纸黑液中分离出并通过化学改性（氨氧化导入氮素）而制成氨氧化木质素（AOL）和未改性的碱木素（ALG）分别制样,进行红外光谱分析。结果表明,造纸黑液木质素在改性过程中部分苯环被打破,并在分子结构上接上了氮素,接上的氮素主要以酰胺态存在,而其他结构仍然与未改性的ALG相同。取等量的AOL和ALG分别与等量的土壤样品混合,在保持一定湿度和30℃下恒温培养1个月,用丙酮浸提,制样,进行GC-MS分析,发现有酚、醌类物质及含氮化合物的存在。这些物质的存在可以解释AOL作为控释氮肥的肥效以及作为尿素增效剂所具有的增效作用。

Spectral Analysis on Ammoxidized Lignin and Its Deyradation Product

For further studying structure characteristics of Ammonoxidized Lignin(AOL) and its degradation product,experiments were carried out through Infraed Ray(IR) and GC-MS.Firstly,AOL and Aalkali Lignin(ALG) samples were pretreated and their structures were compared through Infraed Ray(IR).The results indicated that the partial phenyls of AOL were broken and nitrogen(amide nitrogen mostly) was connected to the structure,which differed from ALG.That is to say,modified lignin,AOL,still preserved the nature as lign...