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首页> 外文期刊>Journal of Macromolecular Science. Pure and Applied Chemistry >Synthesis by emulsion polymerization of poly(butyl acrylate-co-silver acrylate) ionomers and evaluation of their possible applications
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Synthesis by emulsion polymerization of poly(butyl acrylate-co-silver acrylate) ionomers and evaluation of their possible applications

机译：乳液聚合聚（丙烯酸丁酯-共银丙烯酸银）离聚物的合成及其可能的应用评价

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The synthesis by emulsion polymerization and the characterization by a battery of techniques of poly(butyl acrylate-co-silver acrylate) [poly(BuAc-co-AgAc)] ionomers are reported here. Reaction rates were fast and conversions around 90% were obtained in less than one hour, regardless of the initial ratio of butyl acrylate and silver acrylate employed (BuAc/AgAc = 90/10, 80/20, 70/30). Particle size was in the range of 176 to 200nm, depending on the BuAc/AgAc ratio. Ionomers formation was corroborated by infrared spectroscopy and inferred by differential scanning calorimetry (DSC). DSC disclosed that the poly(BuAc-co-AgAc) has two glass transition temperatures: one at ca. 49C due to relaxation of the ionomer backbone domains rich in BuAc and another ca. 35C due to the relaxation of the backbone domains where the AgAc-units content was higher. Young moduli increased as the copolymers became richer in AgAc. Antibacterial tests against Escherichia coli with the 90/10 (BuAc/AgAc) ionomer revealed that the bacteria population diminishes from 5 log CFU/mL to less than 0.3 MPN/mL after one hour of contact with the ionomers. Also, we demonstrated that the ionomers are excellent compatibilizers for making semiconductive films of n-dodecylbenzene sulfonic acid-doped polyaniline (PANIDBSA)-poly(BuAc-co- AgAc) and poly(n-butyl methacrylate) (PBMA) blends. The electrical conductivity of the blend films, which were homogeneous, rose as the AgAc content in the films increased.
机译：在此报道了通过乳液聚合的合成和通过一系列电池表征的聚（丙烯酸丁酯-共-丙烯酸银-丙烯酸银）[聚（BuAc-共-AgAc）]离聚物。反应速度很快，并且无论所用丙烯酸丁酯和丙烯酸银的初始比例如何（BuAc / AgAc = 90 / 10、80 / 20、70 / 30），在不到一小时的时间内即可获得约90％的转化率。颗粒大小在176至200nm的范围内，具体取决于BuAc / AgAc的比例。通过红外光谱证实离聚物的形成，并通过差示扫描量热法（DSC）推断。 DSC公开了聚（BuAc-co-AgAc）具有两个玻璃化转变温度：一个在约20℃。由于富含BuAc和另一个ca.由于AgAc-单元含量较高的主链结构域的弛豫，温度升高至35C。随着共聚物中AgAc含量的增加，杨氏模量增加。用90/10（BuAc / AgAc）离聚物对大肠杆菌进行的抗菌测试显示，与离聚物接触一小时后，细菌种群从5 log CFU / mL减少到0.3 MPN / mL以下。同样，我们证明了该离聚物是制备正十二烷基苯磺酸掺杂的聚苯胺（PANIDBSA）-聚（BuAc-co-AgAc）和聚（甲基丙烯酸正丁酯）（PBMA）共混物的半导电膜的优异相容剂。均匀的共混薄膜的电导率随着薄膜中AgAc含量的增加而增加。

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