Synthesis and application of high-stability bio-based plasticizer derived from ricinoleic acid
Synthesis and application of high-stability bio-based plasticizer derived from ricinoleic acid
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DOI：
10.1016/j.eurpolymj.2022.111125
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发表时间：
2022-03-15
影响因子：
6
通讯作者：
Cao, Zhiliang
中科院分区：
文献类型：
--
作者：
Feng, Shan;Zhang, Pingbo;Cao, Zhiliang
作为市场上使用最广泛的增塑剂之一，邻苯二甲酸酯增塑剂由于其迁移性差且来源于石油基原料，已被欧洲国家和地区禁用。因此，利用清洁、可再生的资源生产高稳定性的生物基环保增塑剂是当前的迫切需求。本工作以蓖麻油酸为主要原料，通过四步反应得到了一种新型高稳定性生物基增塑剂，并通过 FTIR 和 H-1 NMR 对其结构进行了表征和鉴定。随后，添加蓖麻油酸酯增塑剂、市售邻苯二甲酸二辛酯(DOP)和己二酸双(2乙基己基)酯(DOA)制备聚氯乙烯(PVC)薄膜以进行性能比较。 TG结果表明，蓖麻油酸酯增塑的PVC薄膜的Ti（初始降解温度）比DOA和DOP高40℃。此外，拉伸结果表明蓖麻油酸酯可以作为DOA的替代品，表明其优异的塑化效率和机械性能。更重要的是，蓖麻油酸酯增塑PVC在各种环境中表现出良好的迁移稳定性，DMA分析中玻璃化转变温度较低。结果表明，与DOA和DOP相比，蓖麻油酸酯具有更好的综合性能，为合理利用可再生资源制备环保增塑剂提供了新途径。
As one of the most widely used plasticizers in the market, phthalate plasticizers have been banned in European countries and regions due to their poor migration and derived from petroleum-based raw materials. Therefore, using clean and renewable resources to produce high-stability bio-based environmentally friendly plasticizers is an urgent need currently. In this work, a new type of high-stability bio-based plasticizer was obtained by a four step reaction with ricinoleic acid as main raw material, and its structure was characterized and identified by FTIR and H-1 NMR. Subsequently, ricinoleate plasticizer, commercially available dioctyl phthalate (DOP), and bis(2ethylhexyl) adipate (DOA) were added to prepare polyvinyl chloride (PVC) films for performance comparison. According to the TG results, the Ti (initial degradation temperature) of PVC films plasticized with ricinoleate plasticized was 40 ?higher than that of DOA and DOP. In addition, the tensile results showed that the ricinoleate could be used as a substitute for DOA, indicating its excellent plasticizing efficiency and mechanical properties. More importantly, ricinoleate plasticized PVC exhibited the ranking migration stability in various environments, lower glass transition temperature in DMA analysis. All the results demonstrated that compared with DOA and DOP, the ricinoleate has a better comprehensive performance, which provided a new way for the rational use of renewable resources to prepare environmentally friendly plasticizers.