摘要
将聚己二酸/对苯二甲酸丁二酯(PBAT)和聚乳酸(PLA)进行共混,然后添加竹粉、木质素和秸秆粉,利用混合熔融造粒、挤出吹膜工艺制备了PBAT/PLA/生物质粉(BP)(质量比74.26/4.95/19.80)复合垃圾袋,并采用扫描电子显微(SEM)、红外光谱仪(FTIR)、X射线衍射测试(XRD)、热重分析仪(TG)及差示扫描量热仪(DSC)等对垃圾袋的微观形貌、组成、耐热性能、拉伸性能及抗漏性能进行了测试和表征,对其实用性进行了评估。结果表明,3种BP在PBAT/PLA基体中分散性较好,对薄膜结构和热性能几乎没有影响;添加竹粉和木质素材料的垃圾袋相比于添加秸秆粉的垃圾袋有明显的强度优势,强度提高了40%以上。本研究对于降低PBAT/PLA垃圾袋的生产成本、促进生物降解材料的产业化应用具有重要借鉴意义。
The garbage bags based on poly(butylene adipic acid-co-terephthalate)(PBAT)/poly(lactic acid)(PLA)/biomass complex powder composites at a mass ratio 74.26/4.95/19.80 were prepared through granulation and extrusion blowing processes.PBAT and PLA were melt blended with bamboo,lignin,and straw complex powders.The microstructure,composition,heat resistance,tensile properties and leakage resistance of the garbage bags were characterized using scanning electron microscopy,Fourier-transform infrared spectroscopy,X-ray diffraction,thermogravimetric analysis,and differential scanning calorimetry,and their practicability was also evaluated.The results indicated that the dispersibility of three types of biomass powders in the PBAT/PLA matrix had little effect on the film structure and thermal properties.Compared to the garbage bags containing bamboo and lignin powders,the garbage bags containing straw powders presented an increase in strength by over 40%.This work exhibited an important significance for reducing the production cost of PBAT/PLA garbage bags and promoting the industrial application of biodegradable materials.
作者
杨尚山
尚鹏鹏
徐静
解加卓
张坤
张丽丽
YANG Shangshan;SHANG Pengpeng;XU Jing;XIE Jiazhuo;ZHANG Kun;ZHANG Lili(Key Laboratory of Agricultural Film Application of Ministry of Agriculture and Rural Affairs,College of Chemistry and Materials Science,Shandong Agricultural University,Tai’an 271018,China;National Engineering Research Center for Efficient Utilization of Soil and Fertilizer Resources,College of Resources and Environment,Shandong Agricultural University,Tai’an 271018,China)
出处
《中国塑料》
CAS
CSCD
北大核心
2022年第11期127-132,共6页
China Plastics
基金
山东省重点研发计划项目(2021CXGC010810,2020CXGC010803)
国家自然科学基金项目(42077127,32002134)
山东省自然科学基金项目(ZR2020QC162)
山东农业大学科研启动项目(72098)。
关键词
可生物降解
聚己二酸/对苯二甲酸丁二酯
聚乳酸
生物质粉
复合垃圾袋
biodegradability
poly(butylene adipic acid-co-terephthalate)
poly(lactic acid)
biomass powder
composite garbage bag
