文献类型：期刊文献

中文题名：PBST/PHA/木质素三元复合材料薄膜的制备及性能

英文题名：Preparation and Properties of PBST/PHA/Lignin Ternary Composite Films

作者：林锦辉[1];司君栋[1];张琰[1]

机构：[1]华东理工大学材料科学与工程学院,上海200237

年份：2025

卷号：38

期号：4

起止页码：347

中文期刊名：功能高分子学报

外文期刊名：Journal of Functional Polymers

收录：;北大核心:【北大核心2023】；

语种：中文

中文关键词：聚丁二酸丁二醇酯-对苯二甲酸丁二醇酯;聚羟基脂肪酸酯;木质素;薄膜;熔融共混

外文关键词：poly(butylene succinate-co-terephthalate);polyhydroxyalkanoates;lignin;film;melt blending

摘要：采用流延法制备了聚丁二酸丁二醇酯-对苯二甲酸丁二醇酯(PBST)/聚羟基脂肪酸酯(PHA)/木质素三元复合材料薄膜。通过傅里叶红外光谱(FT-IR)、差示扫描量热(DSC)以及热重分析(TGA)等方法对该复合材料的结构及性能进行表征。结果表明:当木质素质量分数为20%时,该复合材料薄膜的拉伸强度和断裂伸长率分别能达到9.2 MPa和848.0%;其熔体流动速率和水蒸气透过量分别能够达到15.6 g/10min和31.6 g/(m^(2)·d),具有优异的熔体加工性能及水阻隔性能;此外该薄膜还具有优异的紫外阻隔性能(紫外吸收率大于99%)。土壤降解实验则表明木质素的引入能够加速薄膜的降解。
Poly(butylene succinate-co-terephthalate)(PBST)/polyhydroxyalkanoates(PHA)/lignin composite films were prepared by casting method.Fourier infrared spectroscopy(FT-IR),differential scanning calorimetry(DSC)and thermogravimetric analysis(TGA)were used to characterize the structure,thermal properties,mechanical properties and crystallization properties of the composites.Results showed that no new chemical bond was formed in the melt blending process.The thermal stability of the composite materials was improved.With the increase of lignin content,the mechanical properties of the composites first increased and then decreased.Under the condition of lignin mass fraction of 20%,the tensile strength and elongation at break reached 9.2 MPa and 848.0%,respectively.Moreover,the melt index and water vapor transmittance of the composite film reached 15.6 g/10min and 31.6 g/(m^(2)·d),respectively,demonstrating excellent melt processing performance and water barrier performance.The composite films also had excellent UV blocking properties(UV absorption rate is greater than 99%),and could delay UV aging of the films.The results of soil degradation experiment showed that the degradation rate of the composite film could reach about 10%in 120 d,and the mechanical properties of the composite film decreased significantly.These results indicate that the introduction of lignin was rapidly degraded by microorganisms in soil,which could effectively accelerate the soil degradation of thin films.In conclusion,this method provides an approach to improve the properties of polymers through melt blending and expands the applications of lignin in multi-component polymer materials.