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Tailoring Acrylated Soybean Oil-Containing Terpolymers through Emulsion Polymerization

机译：通过乳液聚合定制丙烯酸酯类大豆油三元共聚物

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摘要

This work focuses on the synthesis of terpolymers using methyl methacrylate (MMA) and vinyl pivalate (VPi), along with the incorporation of methacrylate acid (MA) and acrylated fatty acids (AFA) derived from commercial soybean oil. Emulsion polymerizations were carried out using different monomeric species, along with different initiator concentrations ranging from 0.5 ga??L−1 to 2.2 ga??L−1. The thermal properties of the terpolymers were improved when acrylated fatty acid was incorporated into the polymer chains, expressing glass transition temperatures (Tg) ranging from 70 °C to 90 °C and degradation temperatures in the interval between 350 °C and 450 °C for acrylated fatty acid concentrations ranging from 5 wt% to 10 wt%. Furthermore, a change was noted in the molar mass distributions as a result of acrylated fatty oil present in the polymers. The materials with 5 and 10 wt% of acrylated fatty oil presented mass-average molar masses of 225 kga??mol−1 and 181 kga??mol−1, respectively. As the results in this work suggest, the molar masses of the formed polymers are significantly altered by the presence of modified fatty acids.
机译：这项工作着重于使用甲基丙烯酸甲酯（MMA）和新戊酸乙烯酯（VPi）合成三元共聚物，以及掺入衍生自商业大豆油的甲基丙烯酸酸（MA）和丙烯酸酯化脂肪酸（AFA）。乳液聚合是使用不同的单体种类，以及从0.5gaΔLL -1到2.2gaΔLL-1的不同引发剂浓度进行的。当将丙烯酸酯化的脂肪酸掺入到聚合物链中时，三元共聚物的热性能得到改善，表现出的玻璃化转变温度（Tg）为70℃至90℃，降解温度为350℃至450区间丙烯酸化脂肪酸的浓度在5℃至10wt％的范围内为0℃。此外，由于存在于聚合物中的丙烯酸化脂肪油，发现摩尔质量分布发生变化。具有5％和10％重量的丙烯酸化脂肪油的材料的质均摩尔质量分别为225kga·mol-1;和181kga·mol-1。这项工作的结果表明，所形成的聚合物的摩尔质量会因改性脂肪酸的存在而显着改变。

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