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Preparation of shaped non-polyelectrolyte hydrogel particles with decomposable and recyclable performance by vortex ring freezing
Journal of Industrial and Engineering Chemistry ( IF 6.1 ) Pub Date : 2021-07-30 , DOI: 10.1016/j.jiec.2021.07.039
Bo Liu 1 , Chao Li 1 , Yicheng Wang 1 , Jun Nie 1 , Xiaoqun Zhu 1
Affiliation  

The vortex-ring derived particles are new type of non-spherical hydrogel particles, which are prepared by imitating the process of vortex-ring in nature. However, the traditional existing vorticity ring derived hydrogel particles were prepared by dropping polyelectrolyte solution into contra-ion coagulation bath, which limited the choice of materials. In this paper, a strategy of preparation non-spherical hydrogel particles by using non-polyelectrolyte polyvinyl alcohol through the method of vortex ring was proposed. Based on the principle that the boraciated polyvinyl alcohol solution could be quickly gelled under alkaline condition, the spherical and various derivative shapes (red cell, bowl, dish, ring) of polyvinyl alcohol vortex-ring derived hydrogel particles (PVHP) were prepared. The hydrogel particles have the ability to assemble into different modules by dynamic borate bond in the hydrogel particles. Also, this dynamic borate bond endowed the PVHP decomposable and recyclable performances. In addition, two-compartments, three-compartments and magnetic PVHP were also prepared, endowing PVHP with several functions. which opens up a new environmentally friendly way for the preparation of multifunctional particles.



中文翻译:

涡环冷冻法制备可分解可回收异形非聚电解质水凝胶颗粒

涡环衍生颗粒是一种新型的非球形水凝胶颗粒,是模仿自然界中涡环形成的过程制备的。然而,现有的传统涡环衍生水凝胶颗粒是通过将聚电解质溶液滴入反离子凝固浴中制备的,这限制了材料的选择。本文提出了一种利用非聚电解质聚乙烯醇通过涡环法制备非球形水凝胶颗粒的策略。基于硼酸化聚乙烯醇溶液在碱性条件下能快速胶凝的原理,制备了聚乙烯醇涡环衍生水凝胶颗粒(PVHP)的球形和各种衍生形状(红细胞、碗、碟、环)。水凝胶颗粒能够通过水凝胶颗粒中的动态硼酸盐键组装成不同的模块。此外,这种动态硼酸盐键赋予了 PVHP 可分解和可回收的性能。此外,还制备了二室、三室和磁性PVHP,赋予PVHP多种功能。为多功能颗粒的制备开辟了一条新的环保途径。

更新日期:2021-09-04
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