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Synthesis and characterization of butyl acrylate-co-poly (ethylene glycol) dimethacrylate obtained by microemulsion polymerization
Designed Monomers and Polymers ( IF 1.6 ) Pub Date : 2020-01-01 , DOI: 10.1080/15685551.2020.1739506
Abraham G. Alvarado 1 , Martin Rabelero 2 , Jacobo Aguilar 3 , Jorge Flores Mejia 4 , Francisco J. Moscoso Sánchez 4
Affiliation  

ABSTRACT The synthesis and characterization of copolymers of n-Butyl Acrylate (BA) and Poly(ethylene glycol) dimethacrylate (PEGDMA) were realized by microemulsion. In this synthesis, the relation of PEGDMA 10, 20, 30, 40 and 50% wt with respect to BA was changed. The copolymers obtained were characterized by the determination of conversions (gravimetry), infrared spectroscopy: Fourier transform (FTIR), dynamic light scattering (DLS), thermogravimetry (TGA) and differential scanning calorimetry (DSC). The results confirmed the synthesis of BA-co – PEGDMA copolymers by the identification of characteristic FTIR bands and which determined the glass transition temperature of the copolymers. The conversions were found in the range of 85% to 90%. Within the stability of the produced latex, it was observed that at 10% and 30% wt. of PEGDMA the systems were stable, but when more PEGDMA was added up 40% to 50% wt., the system became unstable. The stability of produced latexes depends on the PEGDMA contents and this must be less than 30% wt.; meanwhile the PEGDMA content greater than 30% wt. leads to unstable latexes, forming clots. Copolymers showed single glass transition temperatures between −53.37°C and −16.58°C, depending on the composition of PEGDMA in the copolymers. Resulting in the different arrangements of units of PEGDMA along in the chain affected the thermal properties of the final copolymers.

中文翻译:

微乳液聚合丙烯酸丁酯-共聚二甲基丙烯酸乙二醇酯的合成与表征

摘要 通过微乳液实现了丙烯酸正丁酯(BA)和聚(乙二醇)二甲基丙烯酸酯(PEGDMA)共聚物的合成和表征。在该合成中,PEGDMA 10、20、30、40 和 50% wt 与 BA 的关系发生了变化。通过测定转化率(重量法)、红外光谱法:傅立叶变换(FTIR)、动态光散射(DLS)、热重法(TGA)和差示扫描量热法(DSC)来表征所获得的共聚物。结果证实了 BA-co-PEGDMA 共聚物的合成,通过识别特征 FTIR 谱带并确定共聚物的玻璃化转变温度。发现转化率在 85% 到 90% 的范围内。在生产的胶乳的稳定性内,观察到在 10% 和 30% wt. PEGDMA 体系是稳定的,但当更多的 PEGDMA 加入 40% 到 50% wt. 时,体系变得不稳定。所生产胶乳的稳定性取决于 PEGDMA 含量,且必须低于 30% wt。同时PEGDMA含量大于30%wt。导致不稳定的乳胶,形成凝块。共聚物的单一玻璃化转变温度介于 -53.37°C 和 -16.58°C 之间,具体取决于共聚物中 PEGDMA 的组成。导致 PEGDMA 单元在链中的不同排列影响了最终共聚物的热性能。形成凝块。共聚物的单一玻璃化转变温度介于 -53.37°C 和 -16.58°C 之间,具体取决于共聚物中 PEGDMA 的组成。导致 PEGDMA 单元在链中的不同排列影响了最终共聚物的热性能。形成凝块。共聚物的单一玻璃化转变温度介于 -53.37°C 和 -16.58°C 之间,具体取决于共聚物中 PEGDMA 的组成。导致 PEGDMA 单元在链中的不同排列影响了最终共聚物的热性能。
更新日期:2020-01-01
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