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文章编号:1672-6987(2026)04-0084-08;DOI:10. 16351/j. 1672-6987. 2026. 04. 011
杨冬春,李 畅,宋一鸣,李云霞,刘 茹,李芝颖,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:采用溶剂超声剥离法制得氮化硼纳米片(BNNSs),将其作为填料加到聚乳酸/聚对苯 二甲酸-己二酸丁二醇酯聚合物基体中,以熔融共混法制备了聚乳酸/聚对苯二甲酸-己二酸丁 二醇酯/六方氮化硼纳米片(PLA/PBAT/BNNSs)复合材料。通过静态力学性能测试、扫描电 镜(SEM)、动态力学分析仪(DMA)、差示扫描量热仪(DSC)、偏光显微镜(POM)、热变形/维 卡软化点测试仪(VSP)对复合材料进行了表征,探讨了 BNNSs 的含量对复合材料力学性能、 微观结构、结晶性能及热性能的影响。结果表明,少量六方氮化硼纳米片的加入有效地提高了 PLA/PBAT 复合材料的韧性,随着 BNNSs 含量的增加,拉伸强度、拉伸模量、断裂伸长率和冲 击强度都呈现出先增大后减小的趋势。当 BNNSs 含量为 2%(质量分数)时,复合材料力学性 能最优,断裂伸长率为 72%,比纯 PLA/PBAT(质量比 7∶3)提高了约 33. 3%,冲击性能高了 27. 2%,且拉伸强度略有提高为 34. 52 MPa。DMA 测试可知,六方氮化硼纳米片能提高复合 材料的储能模量。同时,六方氮化硼纳米片的加入还提高了 PLA/PBAT 的结晶性和耐热性。
关键词:聚乳酸;聚对苯二甲酸-己二酸丁二醇酯;六方氮化硼纳米片;纳米复合材料
中图分类号:O 643. 36+1 文献标志码:A
引用格式:杨冬春,李畅,宋一鸣,等 . 聚乳酸/聚对苯二甲酸‑己二酸丁二醇酯/六方氮化硼 纳米复合材料的制备及性能研究[J]. 青岛科技大学学报(自然科学版),2026,47(4):84-91.
YANG Dongchun, LI Chang, SONG Yiming, et al. Preparation and properties of polylactic acid/polybutylene terephthalate-adipate/hexagonal boron nitride nanosheets composites[J]. Journal of Qingdao University of Science and Technology(Natural Science Edition),2026,47 (4):84-91.
Preparation and Properties of Polylactic Acid/Polybutylene Terephthalate-Adipate/Hexagonal Boron Nitride Nanosheets Composites
YANG Dongchun,LI Chang,SONG Yiming,LI Yunxia,LIU Ru,LI Zhiying,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:Hexagonal boron nitride nanosheets were prepared by solvent ultrasonic exfoliation method, which was added as a filler into the polylactic acid/polyadipate-butylene terephthalate polymer matrix for the first time, and polylactic acid was prepared by melt blending method / Polybutylene terephthalate-adipate/hexagonal boron nitride nanosheets (PLA/PBAT/ BNNSs) composites. The composites were characterized by static mechanical properties tests, SEM, DMA, DSC, POM, VSP, and the effects of BNNSs content on the mechanical proper‑ ties, microstructure, crystallization properties and thermal properties of the composites were discussed. The results showed that the addition of a small amount of hexagonal boron nitride nanosheets effectively improved the toughness of PLA/PBAT composites, and the tensile strength, tensile modulus, elongation at break, and impact strength all showed a priori with the increase of BNNSs content. trend of decreasing after increasing. When the mass content of BNNSs is 2%, the mechanical properties of the composite are optimal, the elongation at break is 72%, which is about 33. 3% higher than that of pure PLA/PBAT (7∶3), the impact perfor‑ mance is 27. 2% higher, and the tensile The strength increased slightly to 34. 52 MPa. The DMA test shows that the hexagonal boron nitride nanosheets can improve the storage modulus of the composite material. At the same time, the addition of hexagonal boron nitride nanosheets also improved the crystallinity and heat resistance of PLA/PBAT.
Key words:polylactic acid; polybutylene adipate ethylene terephthalate; hexagonal boron nitride nanosheets; nanocomposites
收稿日期:2025-09-03
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:杨冬春(1997—),男,硕士研究生 . * 通信联系人 .