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Composite latex production with high solid content

机译:复合乳胶生产高固含量

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Poly(methyl methacrylate-co-butyl acrylate) (PMMA-co-PBA) and poly(sytrene-co-butyl acrylate) (PSt-co-PBA) latexes in which solid content (SC) varied from 20% up to 40 wt % armored with laponite clay have been successfully synthesized using a simple method, which does not require modification of the clay particles prior to polymerization. Incorporation of quite high amounts of laponite nanoparticles into PMMA-co-PBA and PSt-co-PBA latexes with a certain amount of solids content was achieved. The nanocomposite latexes and polymer samples were characterized using Fourier transform infrared (FTIR) spectroscopy in attenuated total reflectance (ATR) mode, dynamic light scattering (DLS), X-ray diffraction (XRD), transmission electron microscopy (TEM), thermal gravimetric analysis (TGA), differential scanning calorimetry (DSC), contact angle, zeta potential, viscosimetry and analytical ultracentrifuge (AUC). Zeta potential values showed that stable latex was obtained and precipitation problem of the nanoparticles in the latex was not seen during the storage. Obtained nanocomposite latex showed fine particle size between 88 and 160 nm. TEM images and XRD results pointed out that the exfoliated nanocomposite structure for latexes was obtained. DSC analyzes showed that the glass-transition temperature (T-g) values of nanocomposite films decreased slightly compared with those of pure (PMMA-co-PBA) films. Mechanical properties of laponite clay armored PMMA-co-PBA were tested and compared with those of pure PMMA-co-PBA, indicating that incorporated the Young's modulus and tensile strength are also improved to a noticeable extent after the incorporation of laponite. (c) 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47423.
机译:聚(甲基丙烯酸甲酯 - 丙烯酸叔丁酯)(PMMA-CO-PBA)和聚(Sytrene-Co-Budlate)(PST-Co-PBA)胶乳,其固体含量(SC)不同于20%,最高可达40重量%使用简单的方法成功地合成了具有Laponite粘土的%铠装,其在聚合之前不需要改变粘土颗粒。达到将相当大量的Laponite纳米颗粒掺入PMMA-CO-PBA和PST-Co-PBA胶乳,具有一定量的固体含量。用傅里叶变换红外(FTIR)光谱表征纳米复合胶乳和聚合物样品在减振的总反射率(ATR)模式,动态光散射(DLS),X射线衍射(XRD),透射电子显微镜(TEM),热重分析(TGA),差示扫描量热法(DSC),接触角,Zeta电位,粘芯和分析超速纤维(AUC)。 Zeta电位值表明,获得稳定的胶乳并在储存期间未见乳胶中的纳米颗粒的沉淀问题。获得的纳米复合材料胶乳显示出88至160nm之间的细粒尺寸。 TEM图像和XRD结果指出,获得胶乳的剥离纳米复合材料结构。 DSC分析表明,与纯(PMMA-Co-PBA)膜相比,纳米复合膜的玻璃化转变温度(T-G)值略微降低。测试了Laponite粘土铠装PMMA-Co-PBA的力学性能,并与纯PMMA-Co-PBA进行比较,表明掺入杨氏模量和拉伸强度的掺入程度的显着程度。 (c)2019 Wiley期刊,Inc.J.Phill。聚合物。 SCI。 2019,136,47423。

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