Zhu Yan, Du Wangli, Cui Jian, Shao Hong, Guo Yakun, Tang Changyu, Xu Run
Shanghai Technical Institute of Electronics & Information, Shanghai, China.
Kunming University of Science and Technology, Kunming, China.
NPJ Sci Food. 2025 Jun 4;9(1):93. doi: 10.1038/s41538-025-00450-7.
In this work, we adopt "hyperthermal hydrogen-induced cross-linking (HHIC) technology" to fix an interfacial control layer of polyacrylic acid (PAA) on polylactic acid (PLA) to improve the adhesion and integrity of the permeation barrier film, and meanwhile, the HHIC treatment causes no measurable damage to the functional groups of PAA and PLA. Consequently, the oxygen transmission rate decreases from 150.00 to 0.50 ml m day (a reduction of 99.7%), which is less than one tenth of the best value reported, and that the water vapour transmission rate decreases from 32.93 to 16.25 g m day (a reduction of 50.7%), which is slightly higher than the best value reported (3.8% higher). Our work shows that the HHIC technology used in this study provides an efficient way to improve the oxygen and water vapour blocking ability of PLA and may help in improving the quality of other polymer heterointerfaces in the future.
在本工作中，我们采用“超热氢诱导交联（HHIC）技术”在聚乳酸（PLA）上固定聚丙烯酸（PAA）的界面控制层，以提高渗透阻挡膜的附着力和完整性，同时，HHIC处理对PAA和PLA的官能团没有造成可测量的损伤。因此，氧气透过率从150.00降至0.50 ml m² day⁻¹（降低了99.7%），低于已报道的最佳值的十分之一，水蒸气透过率从32.93降至16.25 g m² day⁻¹（降低了50.7%），略高于已报道的最佳值（高3.8%）。我们的工作表明，本研究中使用的HHIC技术为提高PLA的氧气和水蒸气阻隔能力提供了一种有效方法，并可能有助于未来提高其他聚合物异质界面的质量。
