张悦,刘晓娟,孙武亮,王潮姿,董同力嘎,孙文秀.聚乳酸/亚硝酸盐发色纤维包装的制备及其释放行为[J].包装工程,2019,40(17):81-89.
ZHANG Yue,LIU Xiao-juan,SUN Wu-liang,WANG Chao-zi,DONG Tungalag,SUN Wen-xiu.Preparation and Release Behavior of Polylactic Acid/Nitrite Color Protective Fiber Pacakaging[J].Packaging Engineering,2019,40(17):81-89. |
| 聚乳酸/亚硝酸盐发色纤维包装的制备及其释放行为 |
| Preparation and Release Behavior of Polylactic Acid/Nitrite Color Protective Fiber Pacakaging |
| 投稿时间：2019-05-23 修订日期：2019-09-10 |
| DOI：10.19554/j.cnki.1001-3563.2019.17.012 |
| 中文关键词: 静电纺丝 发色纤维 缓释 |
| 英文关键词: electrospinning color protective fiber sustained release |
| 基金项目:国家自然科学基金（31760481） |
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| 中文摘要: |
| 目的 通过静电纺丝技术制备发色纤维材料，为冷鲜肉护色提供理论基础。方法 利用静电纺丝技术将可生物降解的PLA和具有良好发色作用的NaNO2混合以制备发色纤维。研究不同工艺参数对纤维形貌的影响，根据SEM结果选取纤维形貌的最佳条件，并添加NaNO2制备发色纤维。采用FT-IR及静态接触角对制备纤维的组分和亲水性进行分析，并测试纤维的释放性能。结果 随着收集距离、电纺速度的增加，PLA纤维的平均直径会降低；随着电压的增加，聚乳酸纤维的平均直径先增加后降低。得到了适宜的纺丝工艺参数，电压为15 kV，纺丝速度为0.5 mL/h，接收距离为25 cm。随着NaNO2含量的增加，聚乳酸亚硝酸钠纤维的平均直径会降低；随着NaNO2的添加，对纤维亲水性影响不明显；当NaNO2含量增加时，释放时间会延长，该膜中NaNO2的释放速率则降低。结论 通过静电纺丝技术制得了聚乳酸亚硝酸钠发色纤维，其具有优秀的缓释效果，可以应用于肉及肉制品的发色包装。 |
| 英文摘要: |
| The work aims to provide theoretical basis for color protection of chilled meat by preparing the color protective fiber materials with the electrospinning technology. The electrospinning technology was used to mix the biodegradable PLA and NaNO2 having good color protection to prepare the color protective fiber. The effects of different process parameters on the morphology of the fibers were studied. According to the SEM results, the optimal conditions of fiber morphology were selected and NaNO2 was added to prepare the color protective fibers. The composition and hydrophilicity of the prepared fibers were analyzed through FT-IR and static contact angles, and the fiber release properties were also tested. It was found that, with the increase of collection distance and electrospinning speed, the average diameter of PLA fiber decreased; with the increase of voltage, the average diameter of polylactic acid fiber increased first and then decreased. Suitable spinning process parameters were obtained: voltage of 15 kV, spinning speed of 0.5 mL/h, and receiving distance of 25 cm. With the increase of NaNO2 content, the average diameter of polylactic acid sodium nitrite fiber decreased. With the addition of NaNO2, the effect on hydrophilicity of fiber was not obvious. When the content of NaNO2 increased, the release time prolonged, and the release rate of NaNO2 in the film was reduced. Polylactic acid sodium nitrite color-developing fiber is prepared by electrospinning technology, which has excellent sustained release effect and can be applied to color protective packaging of meat and meat products. |
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