接触角
差示扫描量热法
材料科学
化学工程
甲基丙烯酸甲酯
傅里叶变换红外光谱
热重分析
食品包装
肿胀 的
甲基丙烯酸酯
葡甘露聚糖
高分子化学
热稳定性
活性包装
纺纱
化学
复合材料
聚合物
共聚物
工程类
物理
热力学
生物化学
食品科学
作者
Wanmei Lin,Yongsheng Ni,Jie Pang
标识
DOI:10.1016/j.carbpol.2019.114986
摘要
Here, inspired by the hydrophilic/hydrophobic theory, a novel konjac glucomannan/poly (methyl methacrylate)/chlorogenic acid (KGM/PMMA/CGA) food packaging film was successfully fabricated via microfluidic spinning technology (MST). The results of fourier transform infrared spectroscopy and x-ray diffraction confirmed the formation of hydrogen bonds in the films, which lead to the enhanced mechanical properties. Thermogravimetric analysis and differential scanning calorimetry showed excellent thermal stability of the films. Water vapor permeability (1.47 × 10−5 ± 0.11 g/(m⋅h⋅kPa)) and water contact angle (89.2°) measurement proved that the films were hydrophobic. The good swelling degree (85.18 ± 15.65%) indicated film’s potentials in releasing CGA. More importantly, KGM played a key role in the antibacterial activities against Staphylococcus aureus (8.5 ± 3.5 mm) and Escherichia coli (6.5 ± 2.1 mm) by utilizing its hydrophilicity. Thus, our present work may provide a new idea for constructing active food packaging films with significant performances based on hydrophilic/hydrophobic strategy.
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