【求助】帮忙分析红外图是否是PET

polyethylene terephthalate (PET)
Forensic analysis of poly(ethylene terephthalate) fibers by infrared spectroscopy.Causin V, Marega C, Guzzini G, Marigo A.
Dipartimento di Scienze Chimiche dell'Università, via Marzolo 1, 35131 Padova, Italy. valerio.causin@unipd.it

Poly(ethylene terephthalate) (PET) is one of the most commonly employed polymers in the textile industry. Its relevance as a source of evidence in the reconstruction of criminal cases is nevertheless very limited because the properties and morphologies of fibers from different producers tend to be very similar. By integrating bands, obtained on single fibers by infrared (IR) microscopy, associated with trans and gauche conformation and to the O-H end-groups of the molecules, a method is proposed that can discriminate otherwise similar PET fibers. The absorbancies at 1370 and at 846 cm(-1) relative, respectively, to the gauche and trans conformation, were measured and ratioed. The end-group content was evaluated by ratioing the absorbancies of the signals at 3440 and at 874 cm(-1). Relative standard deviation (R. S. D.) was 1% for repetitive analyses on the same location of the same single fiber. Precision was reduced if the ratios were measured along the length of a single fiber (R. S. D. = 3%) and even further when different fibers of the same sample were examined (R. S. D. varied from 2 to 10%). This simple method can greatly enhance the evidential value of PET fibers by subclassifying them, thus helping the Court to better assess their significance.

1: Appl Spectrosc. 2004 Nov;58(11):1272-6.

红外光谱在聚对苯二甲酸乙二醇酯纤维结构研究中的应用
Applications of Infrared Spectroscopy in the Structural Study of Poly (Ethylene Terephthalate) Fibers
<<高分子通报 >>2001年02期
WU Li-heng , JIANG Yuan , 吴立衡 , 江渊

回顾了近年来红外光谱在聚对苯二甲酸乙二醇酯(PET)纤维结构研究中的应用，介绍了纤维制样技术，归纳了构象含量、取向、折叠链含量等结构参数的表征方法及其应用，以及这些结构参数与纤维性能间的联系。
Applications of infrared spectroscopy in the structural study of Poly (Ethylene Terephthalate) (PET) fibers in recent years have been reviewed.Some techniques of sample preparation for infrared measurement have been introduced.Characterizations and applications of the structural parameters,such as conformers contents,chain orientation,folded chain contents,and the relationship between these parameters and yarn properties haven been summarized.
高分子通报 >> 2001年02期 >> 红外光谱在聚对苯二甲酸乙二醇酯纤维结构研究中的应用

PET在1342附近有中强吸收峰。

我的样品和楼主的做出来一模一样，不知道每个峰如何解析啊？盼高手

传上标准图谱，对照看吧!

照这么看，应该是

延陵子(qsy) 发表:
传上标准图谱，对照看吧!

原文由 gyh_913(gyh_913) 发表:
如题, 谢谢!

貌似PET是1722左右不是1710