Research on Qualitative and Quantitative Analysis of PE and EVA in Biodegradable Materials by FTIR

Chao-nan SHANG; Yan-li XIE; Xiao GAO; Xue-qing ZHOU; Zhen-dong ZHAO; Jia-xin MA; Peng CUI; Xiao-xiao WEI; Yu-hong FENG; Ming-nan ZHANG

doi:10.3964/j.issn.1000-0593(2022)11-3380-07

Journals >Spectroscopy and Spectral Analysis >Volume 42 >Issue 11 >Page 3380 > Article

Spectroscopy and Spectral Analysis
Vol. 42, Issue 11, 3380 (2022)

Research on Qualitative and Quantitative Analysis of PE and EVA in Biodegradable Materials by FTIR

Chao-nan SHANG^1、*, Yan-li XIE^2、2;, Xiao GAO^3、3;, Xue-qing ZHOU^2、2;, Zhen-dong ZHAO^2、2;, Jia-xin MA^1、1;, Peng CUI^3、3;, Xiao-xiao WEI^3、3;, Yu-hong FENG^{1、1; 2; *;}, and Ming-nan ZHANG^{2、2; *;}

Author Affiliations

¹1. College of Chemical Engineering and Technology, Hainan University, Haikou 570228, China

²2. Analysis and Test Center of Hainan University, Haikou Municipal Key Laboratories of Analysis and Test for Neo-drug Research & Development, Haikou 570228, China

³3. Institute of Analysis and Testing, Beijing Academy of Science and Technology (Beijing Centre for Physical and Chemical Analysis), Beijing Key Laboratory of Organic Materials Testing Technology and Quality Evaluation, Beijing 100089, China

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DOI: 10.3964/j.issn.1000-0593(2022)11-3380-07 Cite this Article

Chao-nan SHANG, Yan-li XIE, Xiao GAO, Xue-qing ZHOU, Zhen-dong ZHAO, Jia-xin MA, Peng CUI, Xiao-xiao WEI, Yu-hong FENG, Ming-nan ZHANG. Research on Qualitative and Quantitative Analysis of PE and EVA in Biodegradable Materials by FTIR[J]. Spectroscopy and Spectral Analysis, 2022, 42(11): 3380 Copy Citation Text

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Fig. 1. ATR-FTIR spectra of PE, EVA, PBAT and PLA

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Fig. 2. ATR-FTIR spectra of PE-PBAT system
(a): FTIR spectra; (b): Second-order derivative processing diagram of low content components

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Fig. 3. ATR-FTIR spectra of EVA-PBAT system
(a): FTIR spectra; (b): Second-order derivative processing diagram of low content components

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Fig. 4. ATR-FTIR spectra of PE-PLA system
(a): FTIR spectra; (b): Second-order derivative processing diagram of low content components

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Fig. 5. ATR-FTIR spectra of EVA- PLA system
(a): FTIR spectra; (b): Second-order derivative processing diagram of low content components

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Fig. 6. The curve of 2 918/727 and PE content in PE-PBAT system

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Fig. 7. The curve of 2 918/727 and PE content in PE-PBAT system

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Fig. 8. The curve of 2 918/727 and EVA content in EVA-PBAT system

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Fig. 9. The curve of 2 918/1 460 and PE content in PE-PLA system

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Fig. 10. The classification results of four systems
[1]: EVA-PBAT; [2]: PE-PBAT; [3]: EVA-PLA; [4]: PE-PLA

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组分	加工温度 T/℃	转速n /min^-1	扭力M /(N·cm)
PE-PBAT, EVA-PBAT	145±5	50	22±5
PE-PLA, EVA-PLA	183±5	50	30±5

Table 1. Sample machining process parameters

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样品名称	定性特征峰/cm^-1	基团振动
PE	2 915±5, 2 848±5, 1 468±5, 718±5	长链烷烃中—CH₂—的不对称和对称伸缩振动、弯曲振动、面内摇摆振动
EVA	2 916±5, 28 49±5, 718±5, 1 738±5, 1 237±5	长链烷烃中—CH₂—的不对称和对称伸缩振动、面内摇摆振动; C=O和C—O的伸缩振动
PBAT	1 709±5, 1 267±5, 1 252±5, 727±5	C=O和C—O的伸缩振动; 对位双取代苯环上的CH面外弯曲振动
PLA	1 748±5, 1 181±5	C=O和C—O的伸缩振动

Table 2. Qualitative characteristic peaksand group's vibrationof pure materials

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样品名称	禁塑组分定性特征峰/cm^-1	禁塑组分定量特征峰/cm^-1
PE-PBAT, EVA-PBAT	2 918±5, 2 850±5	2 918±5, 2 850±5, 1 714±5, 727±5
PE-PLA	2 918±5, 2 850±5, 718±5	2 918±5, 2 850±5, 1 747±5, 1 460±5
EVA-PLA	2 918±5, 2 850±5, 718±5, 1 237±5	2 918±5, 2 850±5, 1 740±5

Table 3. Qualitative and quantitative characteristic peaks of blend material

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共混体系	配制真实值	平均预测值	平均残差值	标准偏差
	8% PE	7.85	0.15	0.005 7
	15% PE	13.77	1.23	0.015
PE-PBAT	25% PE	23.00	2.00	0.021
	35% PE	37.62	-2.62	0.026
	45% PE	46.08	-1.08	0.026
	8% EVA	7.73	0.27	0.03
	15% EVA	13.07	1.93	0.03
EVA-PBAT	25% EVA	23.73	1.27	0.03
	35% EVA	32.40	2.60	0.03
	45% EVA	45.07	-0.07	0.03
	8% PE	7.20	0.80	0.015
	15% PE	14.80	0.20	0.021
PE-PLA	25% PE	24.40	0.60	0.006
	35% PE	34.40	0.60	0.01
	45% PE	44.60	0.40	0.098
	5% EVA	4.94	0.06	0.006
	10% EVA	9.06	0.94	0.02
EVA-PLA	20% EVA	20.24	-0.24	0.025
	30% EVA	30.24	-0.24	0
	40% EVA	39.06	0.94	0.078

Table 4. Blind sample verification (n=3)

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