废弃棉织物微晶纤维素/聚乳酸复合薄膜的制备与性能研究

陈超, 李荣国, 黄山, 姜晓雪, 靳晓曼, 张洁瑞, 杨莉

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塑料科技 ›› 2024, Vol. 52 ›› Issue (11) : 90-95. DOI: 10.15925/j.cnki.issn1005-3360.2024.11.018
生物与降解材料

废弃棉织物微晶纤维素/聚乳酸复合薄膜的制备与性能研究

作者信息 +

Preparation and Properties Study of Waste Cotton Microcrystalline Cellulose/Polylactic Acid Composite Films

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摘要

以废弃棉织物作为微晶纤维素（MCC）来源，将十八胺-密胺树脂（OMF）疏水化改性得到的OMF-MCC作为增强材料，制备废弃棉织物微晶纤维素/聚乳酸复合薄膜（OMF-MCC/PLA），并对改性前后的废弃棉织物MCC及OMF-MCC/PLA复合薄膜开展材料表征和力学性能测试。结果表明：废弃棉织物提取的MCC表面光滑，尺寸分布较宽；OMF成功实现了废弃棉织物MCC的疏水化改性，添加OMF-MCC的聚乳酸（PLA）复合薄膜拉伸强度较纯PLA薄膜最大提升了166.6%，断裂伸长率略有下降；OMF-MCC/PLA复合薄膜展现出良好的力学性能。

Abstract

Utilizing waste cotton as a source of microcrystalline cellulose (MCC), octadecylamine-melamine formaldehyde resin (OMF) was employed for hydrophobic modification to obtain OMF-MCC as a reinforcing material for waste cotton microcrystalline cellulose/polylactic acid composite films (OMF-MCC/PLA). Material characterization and mechanical properties tests were conducted on pristine and modified waste cotton MCC and the OMF-MCC/PLA composite films. The results showed that the MCC extracted from waste cotton textiles had a smooth surface with wide size dispersion, and OMF modification increased the hydrophobicity of waste cotton MCC successfully. Compared to the pure PLA films, the tensile strength of the OMF-MCC/PLA composite films was enhanced significantly with the addition of OMF-MCC, maximally increased by 166.6%. The elongation at break of OMF-MCC/PLA composite films only experienced a slight decrease. The obtained OMF-MCC/PLA composite films demonstrated excellent mechanical properties.

关键词

聚乳酸 / 废弃棉织物 / 微晶纤维素 / 力学性能

Key words

Polylactic acid / Waste cotton / Microcrystalline cellulose / Mechanical properties

中图分类号

TQ323.41 / TB332

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陈超 , 李荣国 , 黄山 , 等. 废弃棉织物微晶纤维素/聚乳酸复合薄膜的制备与性能研究. 塑料科技. 2024, 52(11): 90-95 https://doi.org/10.15925/j.cnki.issn1005-3360.2024.11.018
CHEN Chao, LI Rong-guo, HUANG Shan, et al. Preparation and Properties Study of Waste Cotton Microcrystalline Cellulose/Polylactic Acid Composite Films[J]. Plastics Science and Technology. 2024, 52(11): 90-95 https://doi.org/10.15925/j.cnki.issn1005-3360.2024.11.018

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基金

中国烟草总公司2022年度科技项目“烟草商业物流可降解绿色包装技术研发与应用”(110202202035)
陕西省烟草公司2022年度科技项目“烟草商业企业物流碳排放评估与低碳技术应用研究”(KJ-2022-08)
长安大学2024年大学生创新训练项目“绿色合成纳米羟基磷灰石对土壤镉的钝化机理研究”(S202410710328)

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