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天然和合成交联试剂对壳聚糖基杂化水凝胶结构和力学性能的影响。

Influence of natural and synthetic crosslinking reagents on the structural and mechanical properties of chitosan-based hybrid hydrogels.

机构信息

Instituto de Investigaciones en Materiales, Universidad Nacional Autónoma de México, Apdo. Postal 70-360, Cd. Universitaria, Cd. de México 04530, Mexico; Posgrado en Ciencia e Ingeniería de Materiales, Universidad Nacional Autónoma de México, Apdo, Postal 70-360, Cd. Universitaria, Cd. de México 04530, Mexico.

Instituto de Investigaciones en Materiales, Universidad Nacional Autónoma de México, Apdo. Postal 70-360, Cd. Universitaria, Cd. de México 04530, Mexico.

出版信息

Carbohydr Polym. 2016 Oct 20;151:1073-1081. doi: 10.1016/j.carbpol.2016.06.036. Epub 2016 Jun 17.

DOI:10.1016/j.carbpol.2016.06.036
PMID:27474657
Abstract

The objective of this work was to correlate the physical and chemical properties of chitosan/poly(vinyl alcohol)/genipin (CS/PVA/GEN) and chitosan/poly(vinyl alcohol)/glutaraldehyde (CS/PVA/GA) hydrogels with their structural and mechanical responses. In addition, their molecular structures were determined and confirmed using FTIR spectroscopy. The results indicated that the hybrid hydrogels crosslinked with genipin showed similar crystallinity, thermal properties, elongation ratio and structural parameters as those crosslinked with glutaraldehyde. However, it was found that the elastic moduli of the two hybrid hydrogels were slightly different: 2.82±0.33MPa and 2.08±0.11MPa for GA and GEN, respectively. Although the hybrid hydrogels crosslinked with GEN presented a lower elastic modulus, the main advantage is that GEN is five to ten thousand times less cytotoxic than GA. This means that the structural and mechanical properties of hybrid hydrogels crosslinked with GEN can easily be tuned and could have potential applications in the tissue engineering, regenerative medicine, food, agriculture and environmental industries.

摘要

本工作旨在研究壳聚糖/聚乙烯醇/京尼平(CS/PVA/GEN)和壳聚糖/聚乙烯醇/戊二醛(CS/PVA/GA)水凝胶的物理化学性质与其结构和机械响应之间的相关性。此外,还使用傅里叶变换红外光谱法(FTIR)确定并证实了其分子结构。结果表明,用京尼平交联的杂化水凝胶的结晶度、热性能、伸长率和结构参数与用戊二醛交联的水凝胶相似。然而,发现两种杂化水凝胶的弹性模量略有不同:GA 和 GEN 的弹性模量分别为 2.82±0.33MPa 和 2.08±0.11MPa。尽管用 GEN 交联的杂化水凝胶的弹性模量较低,但主要优点是 GEN 的细胞毒性比 GA 低五到一万倍。这意味着用 GEN 交联的杂化水凝胶的结构和机械性能可以轻松调节,并可能在组织工程、再生医学、食品、农业和环境行业中有潜在应用。

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