摘要
为了提升聚对苯二甲酸/己二酸丁二醇酯(PBAT)和淀粉相容性,同时增加水性墨在薄膜上的附着力,本文以PBAT为基体,热塑性淀粉(TPS)为填料,制备了聚乙二醇硬脂酸酯(EPOST )/PBAT/TPS复合材料薄膜。通过傅里叶变换红外光谱、扫描电子显微镜、差示扫描量热仪等研究了EPOST的含量对复合材料薄膜微观结构、热性能、拉伸性能、熔体质量流动速率、亲水性、水性墨剥离率的影响。结果表明,EPOST的添加能提升复合材料的相容性,当EPOST的含量为3份(质量份)时,复合材料薄膜的拉伸性能最优,其纵向/横向拉伸强度为(13.15/10.57)MPa,纵向/横向断裂伸长率为474%/402%。随着EPOST用量的增加,复合材料结晶温度升高,结晶度降低,亲水性增加,更容易加工,同时EPOST的引入能显著提升EPOST/PBAT/TPS复合材料薄膜对水性墨的附着力,拓宽了EPOST/PBAT/TPS复合材料薄膜的使用场景。
To enhance the compatibility between poly (butylene adipate-co-terephthalate)(PBAT)and starch while improving the adhesion of water-based ink on the films,a polyglycol stearate(EPOST )/PBAT/TPS composite film was prepared using PBAT as the matrix and thermoplastic starch(TPS)as the filler.The EPOST dosage effects on the microstructures,thermal properties,tensile properties,melt mass flow rates,hydrophilicity,and water-based ink peel-off rates of the composite films were investigated through Fourier transform infrared spectroscopy,scanning electron microscopy,differential scanning calorimetry,and other analytical methods.The results demonstrate that EPOST effectively improves the compatibility of the composite materials.When the content of EPOST reaches three parts by mass,the composite film exhibits optimal tensile performances,with machine direction/transverse direction tensile strengths of(13.15/10.57)MPa and machine direction/transverse direction elongation at break of 474%/402%.As the EPOST dosage increases,the composite crystallization temperature increases,crystallinity decreases,hydrophilicity improves,and processability is enhanced.Additionally,EPOST significantly enhances the adhesion of water-based ink on the EPOST/PBAT/TPS composite films,expanding their potential applications.
作者
李涛
袁弋惠
周淑芬
冉国文
谢海生
LI Tao;YUAN Yihui;ZHOU Shufen;RAN Guowen;XIE Haisheng(China Bluestar Chengrand Co.,Ltd.,Chengdu 610041,China)
出处
《塑料工业》
北大核心
2025年第9期58-64,共7页
China Plastics Industry
