于力,邓云,王丹凤,钟宇.表面活性剂对壳聚糖成膜体系物理特性的影响[J].包装工程,2022,43(11):1-7.
YU Li,DENG Yun,WANG Dan-feng,ZHONG Yu.Effect of Surfactants on Physical Properties of Chitosan Film-forming System[J].Packaging Engineering,2022,43(11):1-7. |
| 表面活性剂对壳聚糖成膜体系物理特性的影响 |
| Effect of Surfactants on Physical Properties of Chitosan Film-forming System |
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| DOI：10.19554/j.cnki.1001-3563.2022.11.001 |
| 中文关键词: 表面活性剂 壳聚糖 膜液性能 成膜性质 |
| 英文关键词: surfactant chitosan property of film-forming solution film-forming performance |
| 基金项目:国家自然科学基金(32072270) |
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| 中文摘要: |
| 目的 为研究不同表面活性剂对壳聚糖成膜体系物理与力学性能的影响，以期制备性能优良的壳聚糖膜。方法 文中配制质量分数为1%的壳聚糖膜液，以壳聚糖质量分数为30%的甘油为增塑剂，分别以质量分数为0.05%的吐温20、40、80，司盘20、40、80为表面活性剂，采用流延法制备可食膜。考察膜液流变性质、表面张力、Zeta电位，成膜力学性能、水分敏感性(水蒸气透过率、溶胀性、溶解性)、透光性，并利用AHP–CRITIC联合评价法对膜性能进行综合评价。结果 在质量分数为1%时，壳聚糖膜液表现为弱胀塑性;表面活性剂的加入能够有效降低膜液表面张力，使其保持稳定状态(Zeta电位>30 mV);成膜均为淡黄色半透明状，透光范围为45%~77%;对同一系列表面活性剂，随着亲水亲油平衡值(HLB)的增加，成膜力学性能下降，但阻水能力增强，同时，吐温添加组膜的力学性能均优于司盘添加组，而阻水性能则相反。结论 综合评价膜体系性能发现，加入司盘20的壳聚糖膜得分最高，吐温系列最高分为吐温20。研究结果为成膜体系中表面活性剂的选择提供了理论依据。 |
| 英文摘要: |
| The paper aims to study the effect of different surfactants on the physical and mechanical properties of chitosan film-forming system to prepare chitosan film with good properties. 1% chitosan film-forming solution was prepared in this paper. And 30wt.% (chitosan) glycerin was used as the plasticizer, while 0.05% Tween 20, 40, 80, and Span 20, 40, 80 were added respectively as surfactant. Chitosan film was made by casting method. The rheological properties, surface tension and Zeta potential of film-forming solution, and mechanical properties, moisture sensitivity (water vapor transmission rate, swelling, solubility) and light transmittance of chitosan film were investigated. AHP-CRITIC method was applied to comprehensively evaluate the performance of the film-forming system. The results showed that the film-forming solution exhibited weak swelling plasticity at a concentration of 1%; the addition of surfactants could effectively reduce the surface tension of the solution and keep it in a stable state (Zeta potential>30 mV); the formed film was light yellow and translucent with light transmission range of 45%-77%; for the same series of surfactants, the mechanical properties of the film decreased but the moisture barrier capacity increased by the increase of hydrophilic-lipophilic balance (HLB); in addition, film with Tween series had better mechanical properties, while moisture barrier performance displayed the opposite trend. The comprehensive evaluation of the film-forming performance shows that the chitosan film with Span 20 has the highest score. For chitosan film adding Tween series, the one with Tween 20 has higher score. The results from present study provide a theoretical basis for the selection of surfactants in the film-forming system. |
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