Abstract Development of active packaging based on polymers doped with silver has gained increasing interest. PET bottles were produced by injection and stretch blow molding under addition of silver phosphate (Ag3PO4) glass at 3 % and 10 % (w/w) and of AgPURE masterbatch at 10 % (w/w) which contained 6500 ppm silver nanoparticles (AgNPs). These bottles underwent release tests. Silver released into distilled water, 0.5 % and 3 % (w/w) acetic acid was quantified using inductively coupled plasma mass spectrometry (ICP-MS). The amount of silver released ranged from 2 μgL−1 to 72 μgL−1 after 10 days at either 21 °C or 43 °C. For PET bottles containing AgNPs no release of silver was detected. Release was dependent on percentage of antimicrobial filler in the polymer, temperature, and acidic strength. Diffusion coefficients of silver ion (Ag+) in PET were observed to be between 3.2 × 10−17 and 1.7 × 10−15 cm2/s. Bottles containing 3% (w/w) did not exceed the proposed specific migration level of 0.05 mg Ag per kg food, whereas bottles containing 10 % (w/w) did.

中文翻译：

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从掺银 PET 瓶中释放银

摘要 基于掺银聚合物的活性包装的开发越来越受到关注。PET 瓶是在添加 3% 和 10% (w/w) 的磷酸银 (Ag3PO4) 玻璃和 10% (w/w) 的含有 6500 ppm 银纳米粒子 (AgNPs) 的 AgPURE 母料下通过注射和拉伸吹塑成型生产的）。这些瓶子进行了释放测试。使用电感耦合等离子体质谱法 (ICP-MS) 对释放到蒸馏水、0.5% 和 3% (w/w) 乙酸中的银进行定量。在 21 °C 或 43 °C 下 10 天后，释放的银量从 2 μgL-1 到 72 μgL-1 不等。对于含有 AgNPs 的 PET 瓶，没有检测到银的释放。释放取决于聚合物中抗菌填料的百分比、温度和酸性强度。观察到银离子 (Ag+) 在 PET 中的扩散系数介于 3.2 × 10-17 和 1.7 × 10-15 cm2/s 之间。含有 3% (w/w) 的瓶子没有超过每公斤食物 0.05 毫克银的提议特定迁移水平，而含有 10% (w/w) 的瓶子则超过。