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中国塑料 ›› 2024, Vol. 38 ›› Issue (7): 37-42.DOI: 10.19491/j.issn.1001-9278.2024.07.007
收稿日期:
2023-10-23
出版日期:
2024-07-26
发布日期:
2024-07-24
通讯作者:
张利君(1986-),女,博士,安徽农业大学讲师,主要研究方向为功能高分子材料的制备及应用,LjunZhang@ahau.edu.cn基金资助:
FAN Shuting, ZHANG Zhiyu, GUO Rui, ZHANG Lijun
Received:
2023-10-23
Online:
2024-07-26
Published:
2024-07-24
摘要:
以壳聚糖(CS)和玉米淀粉(St)为原料、柠檬酸(CA)为交联剂,采用流延法制备了CS/St/CA交联膜。研究了CS与St的质量比以及CA的含量对CS/St/CA膜热稳定性、水溶性、阻湿性以及力学性能的影响。结果表明,CA的加入对CS/St膜的性能有明显影响,且当CS/St的质量比为2/1,CA在溶液中的质量分数为2 %时,所制备的CS/St/CA交联膜的综合性能最优。此时,薄膜的最大热分解温度为366.3 ℃,质量保留率为28.29 %,含水量为8.16 %,水溶性为28.48 %,溶胀度为18.72 %,薄膜表面的水接触角为101.5 °,薄膜的水蒸气透过量为8 g/(m2·24 h),降低了12.25倍,水蒸气透过系数为0.488×10-13 g•cm/(cm2·s·Pa),拉伸强度从3.7 MPa 提高到了12.5 MPa,断裂伸长率从85.3 %提高到了113.2 %。
中图分类号:
凡淑婷, 张芷瑜, 郭睿, 毕文雅, 张利君. 壳聚糖/玉米淀粉交联膜的制备及性能研究[J]. 中国塑料, 2024, 38(7): 37-42.
FAN Shuting, ZHANG Zhiyu, GUO Rui, ZHANG Lijun. Preparation and performance of chitosan/corn starch crosslinked films[J]. China Plastics, 2024, 38(7): 37-42.
温度/℃ | CS的质量 保留率/% | St的质量 保留率/% | CS/St的质量 保留率/% |
---|---|---|---|
50 | 99.27 | 99.35 | 100.00 |
110 | 91.41 | 93.83 | 93.11 |
350 | 33.18 | 29.26 | 33.54 |
600 | 25.71 | 13.45 | 24.93 |
温度/℃ | CS的质量 保留率/% | St的质量 保留率/% | CS/St的质量 保留率/% |
---|---|---|---|
50 | 99.27 | 99.35 | 100.00 |
110 | 91.41 | 93.83 | 93.11 |
350 | 33.18 | 29.26 | 33.54 |
600 | 25.71 | 13.45 | 24.93 |
温度/℃ | CA含量/% | |||
---|---|---|---|---|
0 | 0.5 | 2 | 5 | |
50 | 100.00 | 100.00 | 100.00 | 100.00 |
150 | 89.82 | 92.17 | 93.65 | 95.23 |
370 | 31.92 | 35.44 | 45.36 | 43.94 |
600 | 24.93 | 25.72 | 28.29 | 26.11 |
温度/℃ | CA含量/% | |||
---|---|---|---|---|
0 | 0.5 | 2 | 5 | |
50 | 100.00 | 100.00 | 100.00 | 100.00 |
150 | 89.82 | 92.17 | 93.65 | 95.23 |
370 | 31.92 | 35.44 | 45.36 | 43.94 |
600 | 24.93 | 25.72 | 28.29 | 26.11 |
CA含量/ % | 含水量/ % | 水溶性/ % | 溶胀度/ % | 接触角/ (°) | 图像 |
---|---|---|---|---|---|
0 | 11.93 | 39.79 | 74.84 | 45 | ![]() |
0.5 | 9.09 | 34.36 | 73.13 | 81.5 | ![]() |
2 | 8.16 | 28.48 | 18.72 | 101.5 | ![]() |
5 | 6.44 | 35.82 | 10.60 | 69 | ![]() |
CA含量/ % | 含水量/ % | 水溶性/ % | 溶胀度/ % | 接触角/ (°) | 图像 |
---|---|---|---|---|---|
0 | 11.93 | 39.79 | 74.84 | 45 | ![]() |
0.5 | 9.09 | 34.36 | 73.13 | 81.5 | ![]() |
2 | 8.16 | 28.48 | 18.72 | 101.5 | ![]() |
5 | 6.44 | 35.82 | 10.60 | 69 | ![]() |
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