聚对苯二甲酸乙二醇酯
聚萘二甲酸乙二醇酯
材料科学
透氧性
复合材料
氧气
极限抗拉强度
活性包装
水蒸气
对苯二甲酸二甲酯
造型(装饰)
聚乙烯
瓶子
化学工程
食品包装
聚酯纤维
化学
有机化学
食品科学
工程类
作者
Penghui Zhang,Zeming Tong,Ming–Hsuan Yang,Lei Gong,Zhenguo Liu,Yanhui Chen
摘要
Abstract In this work, the oxygen barrier property of polyethylene terephthalate (PET) films was enhanced by optimizing the “active” and “passive” synergistic barrier approaches, that is, integration of high barrier material polyethylene naphthalate (PEN) and oxygen scavengers along with catalyst with PET before biaxially stretching the PET blended films. When the PEN content in the PET blended films reached 50 wt%, the oxygen permeability coefficient was significantly reduced to 0.9687 cc·mil·m −2 ·day −1 ·0.1 MPa −1 , showing an enhancement of 117.4 times compared to the pure PET film. Furthermore, the water vapor permeability coefficient was reduced to 8.0208 g·mil·m −2 ·day −1 , representing a 45.5% reduction in comparison to the pristine PET film. It also maintained a higher transverse and longitudinal tensile strength (110.5 and 127.2 MPa) than PET film only with oxygen scavengers and catalyst (53.5 and 78.0 MPa). This work presents a viable and practical approach to endow PET materials with simultaneously enhanced oxygen, water barrier performance, and mechanical property. Highlights The OPC of PET film was as low as 0.9687 cc·mil·m −2 ·day −1 ·0.1 MPa −1 . The “active” and “passive” barrier techniques together reduced the OPC of PET film.
科研通智能强力驱动
Strongly Powered by AbleSci AI