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© 《China Plastics》
China Plastics ›› 2021, Vol. 35 ›› Issue (8): 181-188.DOI: 10.19491/j.issn.1001-9278.2021.08.025
• Standard and Test • Previous Articles Next Articles
CHEN Xinqi1, BAI Yun1, LIU Shanshan1, GAO Xia1, LIU Weili1, ZHANG Mei1(), WU Yuwei2, HUANG Yan2, ZHAO Hongliang2(
)
Received:
2021-05-06
Online:
2021-08-26
Published:
2021-08-27
CLC Number:
CHEN Xinqi, BAI Yun, LIU Shanshan, GAO Xia, LIU Weili, ZHANG Mei, WU Yuwei, HUANG Yan, ZHAO Hongliang. Determination of Polylactic Acid and Other Components in Biodegradable Plastics Using Quantitative 1H⁃NMR Method[J]. China Plastics, 2021, 35(8): 181-188.
样品编号 | 样品颜色 | 投料质量比例 |
---|---|---|
1# | 白色 | PBAT(75 %)+其他填料 |
2# | 白色 | PBAT(75 %)+其他填料 |
3# | 白色 | PBAT(68 %)+PLA(8.7 %)+其他填料 |
4# | 白色 | PLA(95 %)+其他填料 |
5# | 白色 | PBAT(8.8 %)+PLA(88 %)+其他填料 |
6# | 白色 | PBAT(28.5 %)+PLA(40 %)+PBS(28 %)+其他填料 |
7# | 白色 | PBAT(40 %)+PBS(40 %)+其他填料 |
样品编号 | 样品颜色 | 投料质量比例 |
---|---|---|
1# | 白色 | PBAT(75 %)+其他填料 |
2# | 白色 | PBAT(75 %)+其他填料 |
3# | 白色 | PBAT(68 %)+PLA(8.7 %)+其他填料 |
4# | 白色 | PLA(95 %)+其他填料 |
5# | 白色 | PBAT(8.8 %)+PLA(88 %)+其他填料 |
6# | 白色 | PBAT(28.5 %)+PLA(40 %)+PBS(28 %)+其他填料 |
7# | 白色 | PBAT(40 %)+PBS(40 %)+其他填料 |
氢质子编号 | δH(PLA)/ppm | δH(PBS)/ppm | δH(PBAT)/ppm |
---|---|---|---|
1 | 5.17 | 4.12 | 4.09 |
1' | - | - | 4.15 |
2 | 1.59 | 1.71 | 1.69 |
2' | - | - | 1.80 |
3 | - | 2.63 | 2.33 |
4 | - | - | 1.66 |
5 | - | - | 4.44 |
5' | - | - | 4.38 |
6 | - | - | 1.98 |
6' | - | - | 1.87 |
7 | - | - | 8.10 |
氢质子编号 | δH(PLA)/ppm | δH(PBS)/ppm | δH(PBAT)/ppm |
---|---|---|---|
1 | 5.17 | 4.12 | 4.09 |
1' | - | - | 4.15 |
2 | 1.59 | 1.71 | 1.69 |
2' | - | - | 1.80 |
3 | - | 2.63 | 2.33 |
4 | - | - | 1.66 |
5 | - | - | 4.44 |
5' | - | - | 4.38 |
6 | - | - | 1.98 |
6' | - | - | 1.87 |
7 | - | - | 8.10 |
序号 | 1 | 2 | 3 | 4 | 5 |
---|---|---|---|---|---|
加入PLA质量/mg | 21.00 | 9.76 | 5.04 | 5.14 | 2.06 |
加入内标标样质量/mg | 5.92 | 4.54 | 6.97 | 7.61 | 14.25 |
定量峰面积比APLA/Ais | 5.376 | 3.221 | 1.084 | 1.032 | 0.214 |
序号 | 1 | 2 | 3 | 4 | 5 |
---|---|---|---|---|---|
加入PLA质量/mg | 21.00 | 9.76 | 5.04 | 5.14 | 2.06 |
加入内标标样质量/mg | 5.92 | 4.54 | 6.97 | 7.61 | 14.25 |
定量峰面积比APLA/Ais | 5.376 | 3.221 | 1.084 | 1.032 | 0.214 |
序号 | 1 | 2 | 3 | 4 | 5 |
---|---|---|---|---|---|
加入PBS质量/mg | 9.83 | 6.51 | 6.48 | 2.56 | 1.55 |
加入内标标样质量/mg | 4.74 | 3.69 | 5.44 | 6.45 | 19.03 |
定量峰面积比APBS/Ais | 5.083 | 4.593 | 2.954 | 1.023 | 0.201 |
序号 | 1 | 2 | 3 | 4 | 5 |
---|---|---|---|---|---|
加入PBS质量/mg | 9.83 | 6.51 | 6.48 | 2.56 | 1.55 |
加入内标标样质量/mg | 4.74 | 3.69 | 5.44 | 6.45 | 19.03 |
定量峰面积比APBS/Ais | 5.083 | 4.593 | 2.954 | 1.023 | 0.201 |
序号 | 1 | 2 | 3 | 4 | 5 |
---|---|---|---|---|---|
加入PBAT质量/mg | 22.55 | 13.43 | 4.69 | 5.10 | 2.21 |
加入内标标样质量/mg | 4.45 | 4.18 | 4.38 | 5.02 | 11.55 |
定量峰面积比Ay/Ais | 4.924 | 3.208 | 1.047 | 1.014 | 0.195 |
序号 | 1 | 2 | 3 | 4 | 5 |
---|---|---|---|---|---|
加入PBAT质量/mg | 22.55 | 13.43 | 4.69 | 5.10 | 2.21 |
加入内标标样质量/mg | 4.45 | 4.18 | 4.38 | 5.02 | 11.55 |
定量峰面积比Ay/Ais | 4.924 | 3.208 | 1.047 | 1.014 | 0.195 |
序号 | 定量峰面积比/质量比(PLA) | 定量峰面积比/质量比(PBS) | 定量峰面积比/质量比(PBAT) |
---|---|---|---|
RSD/% | 0.99 | 2.77 | 1.91 |
1 | 1.506 | 2.564 | 0.9655 |
2 | 1.476 | 2.432 | 1.016 |
3 | 1.518 | 2.454 | 0.9694 |
4 | 1.489 | 2.595 | 0.9941 |
5 | 1.491 | 2.565 | 0.9980 |
6 | 1.489 | 2.466 | 0.9926 |
序号 | 定量峰面积比/质量比(PLA) | 定量峰面积比/质量比(PBS) | 定量峰面积比/质量比(PBAT) |
---|---|---|---|
RSD/% | 0.99 | 2.77 | 1.91 |
1 | 1.506 | 2.564 | 0.9655 |
2 | 1.476 | 2.432 | 1.016 |
3 | 1.518 | 2.454 | 0.9694 |
4 | 1.489 | 2.595 | 0.9941 |
5 | 1.491 | 2.565 | 0.9980 |
6 | 1.489 | 2.466 | 0.9926 |
样品序号 | PLA /% | PBS /% | PBAT /% | ||||||
---|---|---|---|---|---|---|---|---|---|
x | xi | ER | x | xi | ER | x | xi | ER | |
1 | ND | NO | - | ND | NO | - | 73.7 | 75.0 | -1.7 |
2 | ND | NO | - | ND | NO | - | 73.3 | 75.0 | -2.3 |
3 | 8.6 | 8.7 | -1.1 | ND | NO | - | 68.7 | 68.0 | 1.0 |
4 | 93.1 | 95.0 | -2.0 | ND | NO | - | ND | NO | - |
5 | 87.1 | 88.0 | -1.0 | ND | NO | - | 8.7 | 8.8 | -1.1 |
6 | 40.6 | 40.0 | 1.5 | 28.6 | 28.0 | 2.1 | 28.0 | 28.5 | -1.8 |
7 | ND | NO | - | 39.1 | 40.0 | -2.3 | 40.4 | 40.0 | 1.0 |
样品序号 | PLA /% | PBS /% | PBAT /% | ||||||
---|---|---|---|---|---|---|---|---|---|
x | xi | ER | x | xi | ER | x | xi | ER | |
1 | ND | NO | - | ND | NO | - | 73.7 | 75.0 | -1.7 |
2 | ND | NO | - | ND | NO | - | 73.3 | 75.0 | -2.3 |
3 | 8.6 | 8.7 | -1.1 | ND | NO | - | 68.7 | 68.0 | 1.0 |
4 | 93.1 | 95.0 | -2.0 | ND | NO | - | ND | NO | - |
5 | 87.1 | 88.0 | -1.0 | ND | NO | - | 8.7 | 8.8 | -1.1 |
6 | 40.6 | 40.0 | 1.5 | 28.6 | 28.0 | 2.1 | 28.0 | 28.5 | -1.8 |
7 | ND | NO | - | 39.1 | 40.0 | -2.3 | 40.4 | 40.0 | 1.0 |
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