| 袁子辉,王宇,张万松,陈胜,许凤.纳米纤维素/可生物降解塑料双层复合膜的制备及其阻隔性能研究[J].中国造纸学报,2026,41(3):90-97 |
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| 纳米纤维素/可生物降解塑料双层复合膜的制备及其阻隔性能研究 |
| Study on Preparation and Barrier Properties of Nanocellulose/Biodegradable Plastic Two-layer Composite Films |
| 投稿时间：2026-05-29 修订日期：2026-06-09 |
| DOI：10.11981/j.issn.1000-6842.2026.03.90 |
| 中文关键词: 纳米纤维素 可生物降解塑料 双层复合膜 高阻隔 食品包装 |
| Key Words:nanocellulose biodegradable plastic two-layer composite film high-barrier food packaging |
| 基金项目:国家重点研发计划2023YFD22014国家自然科学基金22378023国家重点研发计划（2023YFD22014）；国家自然科学基金（22378023）。 |
| 作者 | 单位 | 邮编 | | 袁子辉* | 北京林业大学材料科学与技术学院,北京,100083 | 100083 | | 王宇 | 北京林业大学材料科学与技术学院,北京,100083 | 100083 | | 张万松 | 北京林业大学材料科学与技术学院,北京,100083 | 100083 | | 陈胜* | 北京林业大学材料科学与技术学院,北京,100083 | 100083 | | 许凤 | 北京林业大学材料科学与技术学院,北京,100083 | 100083 |
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| 中文摘要: |
| 本研究以2,2,6,6-四甲基哌啶氧化物氧化纤维素纳米纤丝（TOCNF）为基体，硬脂酰化纤维素纳米晶体（SCNC）为功能性纳米填料，通过溶液浇筑法制备了TOCNF/SCNC共混膜，并采用热压工艺将其与聚对苯二甲酸-己二酸丁二醇/聚乳酸（PBAT/PLA）共混膜结合，制备得到纳米纤维素/可生物降解塑料双层复合膜；研究了SCNC质量分数对双层复合膜微观形貌、热稳定性、表面润湿性、透明度及气体阻隔性能的影响。结果表明，SCNC表面的长链烷基在热压过程中嵌入PBAT/PLA网络，提升了2层共混膜间的结合力，使双层复合膜的抗拉强度达6.4 MPa，并具备良好的热稳定性。同时，双层复合膜的氧气透过率低至1.06×10-4 cm3/(m2·d·Pa)，水蒸气透过量仅127 g/(m2·24 h)，展现出优异的气体阻隔性能。此外，双层复合膜用作葡萄保鲜包装时表现出极佳的保鲜效果。 |
| Abstract: |
| In this study， TOCNF/SCNC blended films were prepared via solution casting using 2，2，6，6-tetramethylpiperidine-1-oxyl-oxidized cellulose nanofibrils （TOCNF） as the matrix and stearoylated cellulose nanocrystals （SCNC） as the functional nanofiller. These TOCNF/SCNC blended films were then combined with poly(butylene adipate-co-terephthalate)/polylactic acid （PBAT/PLA） blended films through a hot-pressing process to fabricate nanocellulose/biodegradable plastic two-layer composite films. The effects of SCNC mass fraction on the micromorphology， thermal stability， surface wettability， transparency， and gas barrier properties of the two-layer composite films were investigated. The results indicated that the long-chain alkyl groups on the SCNC surface were embedded into the PBAT/PLA network during hot-pressing， which enhanced the interfacial adhesion between the two blended film layers. The two-layer composite films exhibited a tensile strength of 6.4 MPa and possessed good thermal stability. At the same time， the two-layer composite films exhibited excellent gas barrier properties， with an oxygen transmission rate as low as 1.06×10-4 cm3/(m2·d·Pa) and a water vapor transmission of only 127 g/(m2·24 h). Furthermore， the two-layer composite films demonstrated an outstanding preservation effect when used for grape packaging. |
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