Methacrylic acid based microgels have got much consideration in the last two decades because of their potential uses in different fields owing to their responsive behaviour towards external stimuli. Synthesis, properties and uses of methacrylic acid based microgels and their hybrids have been critically reviewed in this article. With minute change in external stimuli such as pH and ionic strength of medium, these microgels show quick swelling/deswelling reversibly. The methacrylic acid based microgels have been widely reported for applications in the area of nanotechnology, drug delivery, sensing and catalysis due to their responsive behaviour. A critical review of current research development in this field along with upcoming perception is presented here. This discussion is concluded with proposed probable future studies for additional growth in this field of research.

中文翻译：

---

甲基丙烯酸基微凝胶和混合微凝胶

基于甲基丙烯酸的微凝胶由于其对外部刺激的响应行为而在不同领域具有潜在用途，因此在过去的二十年中受到了广泛的关注。本文对基于甲基丙烯酸的微凝胶及其杂化物的合成、性质和用途进行了批判性综述。随着外部刺激的微小变化，例如介质的 pH 值和离子强度，这些微凝胶显示出可逆的快速溶胀/去溶胀。基于甲基丙烯酸的微凝胶因其响应行为而被广泛报道用于纳米技术、药物递送、传感和催化领域。此处介绍了对该领域当前研究发展的批判性回顾以及即将到来的看法。