Preparation of Chitin Nanofiber-Reinforced Xanthan Gum Hydrogels
Preparation of Chitin Nanofiber-Reinforced Xanthan Gum Hydrogels
复制标题
甲壳素纳米纤维增强黄原胶水凝胶的制备
DOI：
10.1007/s10924-019-01380-8
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发表时间：
2019
影响因子：
5.3
通讯作者：
J. Kadokawa
中科院分区：
文献类型：
--
作者：
Akito Kawano;Koki Sato;Kazuya Yamamoto;J. Kadokawa
在这项研究中，甲壳素纳米原纤化，阳离子化，然后用作增强剂的黄原胶水凝胶。以甲壳素为原料，经部分脱乙酰基后，与N，N-二甲基乙酰胺二甲缩醛反应，制备了酰胺化甲壳素纳米纤维（CNFs）。将黄原胶离子凝胶与氯化1-丁基-3-甲基咪唑进行分散介质交换制备黄原胶水凝胶，然后将黄原胶水凝胶浸泡在具有不同取代度（DS）的阳离子CNF水分散液中进行复合，得到CNF增强的黄原胶水凝胶。通过冻干样品的SEM测量证实了CNF在水凝胶中的存在。水凝胶中CNF的量随着DS值的增加而增加。水凝胶的压缩测试表明CNFs的增强效果，这是由于黄原胶的阴离子性质引起的静电相互作用。
In this study, chitin was nanofibrillated, cationized, and then used as a reinforcing agent for xanthan gum hydrogels. Amidinated chitin nanofibers (CNFs), which were prepared by partial deacetylation of the nanofibrillated chitin and the subsequent reaction of the generated amino groups withN,N-dimethylacetamide dimethyl acetal, were converted into an amidinium chitin bicarbonate with nanofiber morphology by CO2gas bubbling and ultrasonic treatments in water. Xanthan gum hydrogels, which were prepared by exchange of disperse media from xantham gum ion gels with 1-butyl-3-methylimidazolium chloride, were then soaked in the resulting cationic CNF aqueous dispersions with different degrees of substitution (DSs) of amidinium groups to progress composition, giving rise to the CNF-reinforced xanthan gum hydrogels. The presence of CNFs in the hydrogels was confirmed by SEM measurement of the lyophilized samples. The amounts of CNFs in the hydrogels increased with increasing the DS values. The compression testing of the hydrogels suggested the reinforcing effect of CNFs, which were induced by electrostatic interaction owing to anionic nature of xanthan gum.
影响因子：
6.2
作者：
Fan, Yirnin;Saito, Tsuguyuki;Isogai, Akira
通讯作者：
Isogai, Akira
影响因子：
11.2
作者：
Ifuku, Shinsuke;Nogi, Masaya;Saimoto, Hiroyuki
通讯作者：
Saimoto, Hiroyuki
影响因子：
11.2
作者：
Fan, Yimin;Saito, Tsuguyuki;Isogai, Akira
通讯作者：
Isogai, Akira