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文章编号：1672-6987（2026）02-0085-08；DOI：10. 16351/j. 1672-6987. 2026. 02. 013
李芝颖，刘 茹，李 畅，杨冬春，李云霞，宋一鸣，赵 健* （青岛科技大学 橡塑材料与工程教育部重点实验室；山东省橡塑材料与工程重点实验室，山东 青岛 266042）
摘 要：聚乳酸（PLA）因其韧性差、结晶速率低及耐热性较差等限制了应用。用柔性聚己二 酸丁二醇酯-对苯二甲酸乙二醇酯（PBAT）和硬质 PLA 共混，在保持其生物降解性的同时，又 可增韧聚乳酸。但两者相容性较差，使其力学性能有所降低。而添加纳米填料可以有效改善 PLA/PBAT 共混物的性能。首先通过球磨法制备了羟基功能化六方氮化硼纳米片（OHBNNSs），经过过熔融共混技术，成功地制造PLA/PBAT/OH-BNNSs 复合材料。FT-IR （傅里叶变换红外光谱）、XPS（X 射线光电子能谱）结果证明羟基成功地接枝到氮化硼上。 TEM（透射电镜）测试证明，功能化氮化硼结构没有被破坏。拉伸和冲击的结果证明，OHBNNSs 的 加入进一步提 高 PLA/PBAT/OH-BNNSs 的 韧 性 。 2. 0%（ 质 量 分 数 ）OHBNNSs 的纳米复合材料的断裂伸长率为 122. 4%，比纯 PLA/PBAT 提高了 1. 23 倍。DSC （差示扫描量热）表明 OH-BNNSs 也在复合材料中充当异相成核剂。DSC、VSP（维卡软化 点）和导热性能结果证明，OH-BNNSs 的加入明显改善了复合材料的耐热性能和导热性能。
关键词：羟基化氮化硼纳米片；聚乳酸；聚醇酯；纳米复合材料
中图分类号：O 643 文献标志码：A
引用格式：李芝颖，刘茹，李畅，等 . 聚乳酸/聚醇酯/羟基化氮化硼纳米复合材料的制备及性 能［J］. 青岛科技大学学报（自然科学版），2026，47（2）：85-92.
LI Zhiying， LIU Ru， LI Chang， et al. Preparation and properties of PLA/PBAT/hydroxyl⁃ ated boron nitride nanosheets composites［J］. Journal of Qingdao University of Science and Technology（Natural Science Edition），2026，47（2）：85-92.
Preparation and Properties of PLA/PBAT/Hydroxylated Boron Nitride Nanosheets Composites
LI Zhiying，LIU Ru，LI Chang，YANG Dongchun，LI Yunxia，SONG Yiming，ZHAO Jian （Key Laboratory of Rubber-Plastics， Ministry of Education；Shandong Provincial Key Laboratory of Rubber-Plastics， Qingdao University of Science and Technology， Qingdao 266042， China）
Abstract：Polylactic acid （PLA） has become a substitute for traditional plastics due to its excel⁃ lent biocompatibility， degradability， high modulus， good mechanical processing and nontoxicity. However， its poor toughness， low crystallization rate and poor heat resistance limit its application. Flexible poly （butylene adipate-co-ethylene terephthalate）（PBAT） was blended with rigid PLA to toughen PLA while maintaining its biodegradability. However， the poor compatibility of the two reduces their mechanical properties. The addition of nanofillers can effectively improve the properties of PLA/PBAT blends. Firstly， hydroxyl functionalized hex⁃ agonal boron nitride nanosheets （OH-BNNSs） were prepared by ball milling， and then PLA/ PBAT/OH-BNNSs composites were prepared by melt blending. FT-IR and XPS results showed that hydroxyl groups were successfully grafted onto boron nitride. TEM test proved that the structure of functionalized boron nitride was not destroyed. The tensile and impact results show that the addition of OH-BNNSs further improves the toughness of PLA/PBAT/ OH-BNNSs. The elongation at break of the nanocomposites with 2. 0% OH-BNNSs was 122. 4%， which was 1. 23 times higher than that of pure PLA/PBAT. DSC showed that OHBNNSs also acted as heterogeneous nucleating agents in the composites. DSC and VSP proved that the addition of OH-BNNSs significantly improved the heat resistance and thermal conductivity property of the composites.
Key words：hydroxylated boron nitride nanosheets； PLA； PBAT； nanocomposites
收稿日期：2025-05-16
基金项目：国家自然科学基金项目（51873096）；山东省自然科学基金项目（ZR2019MEM001）.
作者简介：李芝颖（1993—），女，硕士研究生 . * 通信联系人 .
