Chemistry and Industry of Forest Products ›› 2023, Vol. 43 ›› Issue (3): 115-122.doi: 10.3969/j.issn.0253-2417.2023.03.014
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Boya LI, Xiaohui QIN, Kelai HU, Ruchun WU()
Received:
2022-10-18
Online:
2023-06-28
Published:
2023-06-27
Contact:
Ruchun WU
E-mail:wurc2015@163.com
CLC Number:
Boya LI, Xiaohui QIN, Kelai HU, Ruchun WU. Effect of Formic Acid Pretreatment on Properties of Polylactic Acid/Bagasse Cellulose Composite Films[J]. Chemistry and Industry of Forest Products, 2023, 43(3): 115-122.
Table 1
Test design and results of response surface"
序号No. | X1甲酸质量分数/% formic acid mass fraction | X2粒径/μm particle size | X3反应温度/℃ reaction temperature | 甲酰基质量分数/% formyl mass fraction |
1 | 75 | >400 | 90 | 4.54 |
2 | 85 | >400 | 90 | 5.74 |
3 | 75 | 150-180 | 90 | 4.43 |
4 | 85 | 150-180 | 90 | 5.93 |
5 | 75 | >180-400 | 80 | 4.19 |
6 | 85 | >180-400 | 80 | 4.98 |
7 | 75 | >180-400 | 100 | 4.57 |
8 | 85 | >180-400 | 100 | 6.51 |
9 | 80 | >400 | 80 | 4.82 |
10 | 80 | 150-180 | 80 | 4.31 |
11 | 80 | >400 | 100 | 4.73 |
12 | 80 | 150-180 | 100 | 6.20 |
13 | 80 | >180-400 | 90 | 5.62 |
14 | 80 | >180-400 | 90 | 5.67 |
15 | 80 | >180-400 | 90 | 5.76 |
16 | 80 | >180-400 | 90 | 5.63 |
17 | 80 | >180-400 | 90 | 5.55 |
Table 2
Variance analysis of regression model"
方差来源variation source | 平方和sum of squares | 自由度degree of freedom | 均方square | F值F value | P值P value | 显著性significant |
模型model | 8.05 | 9 | 0.89 | 50.85 | <0.0001 | ** |
X1 | 3.66 | 1 | 3.66 | 208.1 | <0.0001 | ** |
X2 | 0.14 | 1 | 0.14 | 7.82 | 0.0267 | * |
X3 | 1.75 | 1 | 1.75 | 99.21 | <0.0001 | ** |
X1X2 | 0.023 | 1 | 0.023 | 1.32 | 0.2883 | |
X1X3 | 0.33 | 1 | 0.33 | 18.69 | 0.0035 | ** |
X2X3 | 0.97 | 1 | 0.97 | 55.16 | 0.000 1 | ** |
X12 | 0.2 | 1 | 0.2 | 11.46 | 0.011 7 | * |
X22 | 0.3 | 1 | 0.3 | 17.03 | 0.004 4 | ** |
X32 | 0.57 | 1 | 0.57 | 32.16 | 0.000 8 | ** |
残差residual | 0.12 | 7 | 0.018 | |||
失拟项lack of fit | 0.1 | 3 | 0.033 | 5.76 | 0.061 9 | |
纯误差pure error | 0.023 | 4 | 0.005 786 | |||
总离差total dispersion | 8.18 | 16 |
Table 3
Crystallization index(ICr), mechanical properties of PLA film and PLA/BFC composite film"
项目items | PLA | PLA/BFC(3.82%) | PLA/BFC(4.19%) | PLA/BFC(5.13%) | PLA/BFC(5.93%) | PLA/BFC(6.51%) |
ICr/% | 25.04 | 16.88 | 22.10 | 25.37 | 26.56 | 29.06 |
断裂伸长率/%breaking elongation | 3.329 | 3.462 | 3.562 | 3.575 | 3.540 | 4.824 |
拉伸强度/MPa tensile strength | 25.750 | 26.715 | 27.186 | 28.905 | 30.581 | 34.131 |
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