木质素
材料科学
生物复合材料
复合材料
牙髓(牙)
流变学
纤维素
填料(材料)
延伸率
化学工程
化学
有机化学
复合数
极限抗拉强度
医学
病理
工程类
作者
Luigi Botta,Vincenzo Titone,Rosalia Teresi,Maria Costanza Scarlata,Giada Lo Re,F. P. La Mantia,Francesco Lopresti
标识
DOI:10.1016/j.ijbiomac.2022.07.048
摘要
Lignin can be obtained as a byproduct during cellulose-rich pulp fibers production and it is habitually treated as waste or intended for low-value destinations. However, due to UV absorption and mechanical properties, lignin can contribute to the fabrication of biodegradable blown films with superior performances. In this study, it was established the suitability of lignin for manufacturing biocomposite PBAT blown films with higher stiffness and photo-oxidation resistance. The effect of the filler concentration on the melt rheological behavior in non-isothermal elongational flow was investigated. The results allowed us to choose the correct filler concentration for producing films through a film blowing operation. The PBAT/lignin blown film composites displayed an increase of the elastic modulus if compared to neat PBAT films without affecting their elongation at break. Furthermore, the filler delayed the photo-oxidative degradation of PBAT hence potentially allowing open-air applications.
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