化工新型材料

化工新型材料 ›› 2024, Vol. 52 ›› Issue (10) : 163-168. DOI: 10.19817/j.cnki.issn1006-3536.2024.10.032

科学研究

快速响应P(MEO₂MA-co-OEGMA₄₇₅)温敏水凝胶的合成及性能研究

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Synthesis and properties of rapid response P(MEO₂MA-co-OEGMA₄₇₅) thermosensitive hydrogel

Xue Tong, Zhuang Ziheng, Yin Yunjie

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Received		Published
2023-07-07		2024-10-20
Issue Date	Revised Date
2024-10-17	2023-07-07

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摘要

为了提高温敏水凝胶的响应速率,以2-甲基-2-丙烯酸-2-(2-甲氧基乙氧基)乙酯(MEO₂MA)和寡聚乙二醇甲醚甲基丙烯酸酯(OEGMA₄₇₅)为单体,乙二醇二甲基丙烯酸酯(EGDMA)为交联剂,聚乙二醇6000为成孔剂,通过紫外线引发聚合制备了P(MEO₂MA-co-OEGMA₄₇₅)温敏水凝胶。通过红外光谱(FT-IR)、凝胶色谱(GPC)、差示量热(DSC)等手段对水凝胶的结构、分子量和热性能进行表征,通过紫外-可见吸收光谱研究了不同投料比制备的P(MEO₂MA-co-OEGMA₄₇₅)的温敏性质,并研究了PEG₆₀₀₀添加量对水凝胶平衡溶胀率、溶胀速率和退溶胀速率的影响。结果表明:制备了P(MEO₂MA-co-OEGMA₄₇₅)水凝胶,P(MEO₂MA-co-OEGMA₄₇₅)的低临界溶解温度随OEGMA₄₇₅用量的增加而逐渐增大。水凝胶的平衡溶胀率、溶胀速率和退溶胀速率随PEG₆₀₀₀用量的增加而逐渐增大,其中当其用量为10%时,水凝胶的平衡溶胀率达到670%,50min内吸水140%,5min内失水达到70%。

Abstract

To improve the response rate of thermosensitive hydrogels,P(MEO₂MA-co-OEGMA₄₇₅) thermosensitive hydrogels were prepared by UV-induced polymerization using 2-(2-methoxyethoxy) ethyl methacrylate (MEO₂MA) and oligo(ethylene glycol) methyl ether methacrylate (OEGMA₄₇₅) as monomers,ethylene glycol dimethacrylate (EGDMA) as crosslinking agent and polyethylene glycol 6000 as pore-forming agent.FT-IR,GPC and DSC were employed to characterize the structure,molecular weight,and thermal properties of the hydrogels.The temperature-sensitive properties of P(MEO₂MA-co-OEGMA₄₇₅) prepared with different feed ratios were studied by UV-visible absorption spectroscopy.The effects of PEG₆₀₀₀ addition on the equilibrium swelling rate,swelling rate,and deswelling rate of hydrogels were investigated.The results showed that the P(MEO₂MA-co-OEGMA₄₇₅) hydrogel was effectively produced,and its low critical solution temperature gradually increased with the increase of OEGMA₄₇₅ dosage.With an increase of PEG₆₀₀₀ dosage,the equilibrium swelling ratio,swelling rate,and deswelling rate of the hydrogel gradually increased.When the PEG₆₀₀₀ dosage was 10%,the equilibrium swelling ratio of the hydrogel reached 670%,the water absorption was 140% within 50min,and the water loss was 70% within 5min.

关键词

温敏水凝胶 / 聚乙二醇 / 低临界溶解温度 / 平衡溶胀率 / 溶胀速率 / 退溶胀速率

Key words

thermosensitive hydrogel / polyethylene glycol / low critical solution temperature / equilibrium swelling rate / swelling rate / deswelling rate

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快速响应P(MEO₂MA-co-OEGMA₄₇₅)温敏水凝胶的合成及性能研究[J]. 化工新型材料, 2024, 52(10): 163-168 DOI:10.19817/j.cnki.issn1006-3536.2024.10.032

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