“凝胶-溶胀”两步法制备高孔隙率明胶气凝胶珠粒及其高挥发性香料吸附性能研究

doi:10.11896/cldb.25050127

材料导报

2026, Vol. 40

Issue (15): 25050127-6 https://doi.org/10.11896/cldb.25050127

高分子与聚合物基复合材料

“凝胶-溶胀”两步法制备高孔隙率明胶气凝胶珠粒及其高挥发性香料吸附性能研究

秦灵¹, 黎洪利², 齐延鹏², 蒋昊², 谢丹¹, 聂朝胤^1,*

1 西南大学材料与能源学院,重庆 400715
2 重庆中烟工业有限责任公司,重庆 400060

Synthesis of Highly Porous Gelatin Aerogel Beads Using a “Gelation-Swelling” Biphasic Strategy and Evaluation of the Adsorption Performance Toward Volatile Fragrance Compounds

QIN Ling¹, LI Hongli², QI Yanpeng², JIANG Hao², XIE Dan¹, NIE Chaoyin^1,*

1 School of Materials and Energy, Southwest University, Chongqing 400715, China
2 China Tobacco Chongqing Industrial Co., Ltd., Chongqing 400060, China

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摘要香精香料的易挥发性不能满足日常持久留香的需求,延缓香料挥发的手段之一是采用多孔材料对香料进行吸附。本工作以明胶为原料,采用“凝胶-溶胀”两步法,并通过低温滴定法和真空冷冻干燥技术,制备了明胶气凝胶珠粒。通过明胶浓度和溶胀的协同作用对气凝胶珠粒的孔隙结构进行了调控,并探究了其对高挥发性香料乙酸乙酯的吸附与缓释性能的影响规律。结果表明:低浓度明胶气凝胶珠粒的吸附量最大,但保持率最差,高浓度则呈现出相反趋势;通过溶胀处理后的高浓度明胶气凝胶珠粒与低浓度相比具有更加致密细小的孔隙与网络骨架结构;高浓度和溶胀的协同作用可明显提高明胶气凝胶珠粒的孔隙率、吸附量及保持率,孔隙率最大提升11.4%,饱和吸附量最大提升743.0%,经时保持率由9.6%提高到130.3%。

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关键词: 明胶气凝胶珠粒吸附缓释高挥发性香料溶胀

Abstract: The inherent volatility of flavors and fragrances does not meet the demand for prolonged fragrance in daily applications. One approach to mitigate this volatility is the use of porous materials for adsorption. In this study, gelatin aerogel beads were fabricated using gelatin as the primary material through a two-step “gelation-swelling” process, followed by low-temperature titration and vacuum freeze-drying. The pore structure of the aerogel beads was modulated by the synergistic effects of gelatin concentration and swelling. Furthermore, the effects of these factors on the adsorption and sustained release properties of ethyl acetate, a highly volatile fragrance compound, were investigated. The results indicated that gelatin aerogel beads exhibited the highest adsorption capacity at low gelatin concentrations, but had the lowest retention rates;conversely, beads with high gelatin concentrations showed reduced adsorption capacity but improved retention rates. Gelatin aerogel beads subjected to swelling treatment exhibited a denser and finer pore network structure compared to beads prepared at lower concentrations. The synergistic combination of high gelatin concentration and swelling treatment markedly enhanced porosity, adsorption capacity, and retention rate. The maximum increase in porosity was 11.4%, while the saturation adsorption capacity and retention rate increased by 743.0% and from 9.6% to 130.3%, respectively.

Key words: gelatin aerogel bead adsorption-slow release highly volatile fragrance swelling

出版日期: 2026-08-10 发布日期: 2026-08-31

ZTFLH:	TQ427.7
	TQ431.3

基金资助: 重庆中烟工业有限责任公司重点科研项目(XY20240101)

通讯作者: * 聂朝胤,博士,西南大学材料与能源学院教授、博士研究生导师。目前主要从事PVD、CVD、电沉积涂层材料和功能气凝胶及其纳米复合材料方面的研究。niecy@swu.edu.cn

作者简介: 秦灵,西南大学材料与能源学院硕士研究生,在聂朝胤教授的指导下研究气凝胶及其应用。

引用本文:

秦灵, 黎洪利, 齐延鹏, 蒋昊, 谢丹, 聂朝胤. “凝胶-溶胀”两步法制备高孔隙率明胶气凝胶珠粒及其高挥发性香料吸附性能研究[J]. 材料导报, 2026, 40(15): 25050127-6.

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https://www.mater-rep.com/CN/10.11896/cldb.25050127 或 https://www.mater-rep.com/CN/Y2026/V40/I15/25050127

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