季铵化壳聚糖-琼脂水凝胶粒的制备及其缓释性能研究  

Preparation of quaternized chitosan-agar hydrogel particles and their urea-loading properties

作　　者：赵予榕 朱丹 许怡菲 余秋漫 胡章 ZHAO Yurong;ZHU Dan;XU Yifei;YU Qiuman;HU Zhang(Department of Applied Chemistry,Faculty of Chemistry and Environmental Science,Guangdong Ocean University,Zhanjiang 524088,China)

机构地区：[1]广东海洋大学化学与环境学院应用化学系,广东湛江524088

出　　处：《应用化工》2024年第10期2293-2296,共4页Applied Chemical Industry

基　　金：国家重点研发计划项目(2020YFD0901101);广东省普通高校重点项目(2022ZDZX2027);广东省大学生创新创业训练计划项目(S202310566059);广东海洋大学本科生创新团队项目(CXTD2021020)。

摘　　要：以琼脂和水溶性较好的季铵化壳聚糖为起始原料,利用非共价键作用制备出季铵化壳聚糖-琼脂水凝胶粒,通过负载尿素,研究其对尿素的缓释性能。采用傅里叶变换红外光谱、X-射线衍射以及扫描电子显微镜等对产物进行结构表征。结果证实,具有多孔结构的季铵化壳聚糖-琼脂水凝胶粒已合成并成功负载尿素。制备的水凝胶粒溶胀率达397.53%,对尿素的包封率为51.83%,室温释放72 h累计释放率达81.37%,呈现良好的缓释效果。因此,为进一步开发新型高效的农业缓释材料提供了科学依据。Using agar and quaternized chitosan with good water solubility as starting materials,quaternized chitosan-agar hydrogel particles were prepared by non-covalent bonding and the sustained-release property of quaternized chitosan-agar hydrogel particles on urea was studied.The structure of the product was characterized by Fourier transform infrared spectroscopy,X-ray diffraction and scanning electron microscopy.The results showed that quaternized chitosan-agar hydrogel particles with porous structure have been synthesized and successfully loaded with urea.The prepared hydrogel particles had good swelling rate(397.53%)and the encapsulation rate of urea(51.83%).The cumulative release rate of urea was 81.37%after 72 h at room temperature,showing a good slow-release effect.Therefore,this study provides a scientific basis for further development of novel and efficient agricultural slow-release materials.

关 键 词：壳聚糖 琼脂 水凝胶粒 尿素 

分 类 号：TQ460.1[化学工程—制药化工] TQ464.1TQ441.41