卢波,王海波,徐龙,陈建国,朱晓艳,马明.竹纤维密胺餐具中单体物质界面迁移的机理研究[J].包装工程,2023,44(21):196-203.
LU Bo,WANG Hai-Bo,XU Long,CHEN Jian-Guo,ZHU Xiao-Yan,MA Ming.Mechanism of Interfacial Migration of Monomer in Bamboo Fiber/Melamine Tableware[J].Packaging Engineering,2023,44(21):196-203. |
| 竹纤维密胺餐具中单体物质界面迁移的机理研究 |
| Mechanism of Interfacial Migration of Monomer in Bamboo Fiber/Melamine Tableware |
| 投稿时间：2023-03-29 |
| DOI：10.19554/j.cnki.1001-3563.2023.21.024 |
| 中文关键词: 竹纤维 餐具 甲醛 三聚氰胺 迁移 界面 |
| 英文关键词: bamboo fiber tableware formaldehyde melamine migration interface |
| 基金项目:宁波市公益性科技计划项目(2021S197) |
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| 中文摘要: |
| 目的 分析竹纤维密胺复合制品中有害单体物质在材料中扩散系数(Diffusion Coefficient，DC)的影响因素，探索其特定迁移量变化的规律和界面迁移机理。方法 本文以相同原料、不同工艺制成的竹纤维密胺餐具为试验样本，采用液相色谱仪、紫外分光光度计、扫描电子显微镜/能谱仪等方法研究了竹纤维密胺复合制品中三聚氰胺和甲醛残留单体的含量、特定迁移量、材料结构、扩散系数之间的关系和影响。结果 不同工艺制成的样本存在界面结构和残留单体浓度差异是影响单体物质扩散系数的主要内在因素。扩散系数是单体物质界面浓度因素和材料结构因素共同作用后形成的变量。随着浸泡时间的增加，模拟液对材料表面结构造成破坏，会促使扩散系数变大。同时，材料内单体浓度也在发生变化，单体浓度和界面结构共同影响下致使扩散系数增加或减少。结论 竹纤维密胺复合制品在单体物质特定迁移量的试验过程中，由于界面结构的变化，影响了扩散系数，验证了特定迁移量数值上的变化规律，为评价竹纤维密胺制品的安全性提供了参考。 |
| 英文摘要: |
| The work aims to analyze the factors influencing the diffusion coefficient (Dc) of hazardous monomers in bamboo fiber/melamine composite products and to explore the pattern of variation of their specific migration amounts and the mechanism of interfacial migration. In this paper, with bamboo fiber/melamine tableware of the same raw materials and different processes as test sample, the relationship between the content, specific migration, material structure and diffusion coefficient of melamine and formaldehyde residue monomers in bamboo/melamine products and their effect were investigated with liquid chromatography, UV spectrophotometer and scanning electron microscope/energy dispersive spectrometer (SEM/EDS). The presence of interfacial structures and differences in residual monomer concentrations in samples made by different processes were the main intrinsic factors affecting the diffusion coefficient Dc of monomers. The diffusion coefficient DC was a variable that resulted from the combined effect of the interfacial concentration factor of the monomer and the structural factor of the material. As the immersion time increased, the simulated liquid caused damage to the surface structure of the material, which drove the diffusion coefficient DC to become larger. At the same time, the concentration of monomers within the material was also changing, and the combined effect of monomer concentration and interfacial structure caused the diffusion coefficient DC to increase or decrease.During the testing of bamboo fiber/melamine composite products for specific migration of monomers, the diffusion coefficient DC is influenced by changes in the interfacial structure, and the pattern of changes in the values of specific migration is verified, providing a reference for evaluating the safety of bamboo fiber/melamine tableware. |
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