Construction and Synthesis of High-Stability Biobased Oligomeric Lactate Plasticizer: Applicable to PVC and PLA Polymers

IF 3.9 3区工程技术 Q2 ENGINEERING, CHEMICAL

Industrial & Engineering Chemistry Research Pub Date : 2022-08-25 DOI:10.1021/acs.iecr.2c02137

Zheming Zhang, Pingping Jiang*, Phyu Thin Wai, Shan Feng, Minjia Lu, Pingbo Zhang, Yan Leng, Lingen Pan and Jie Pan,

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引用次数: 10

Abstract

A novel green plasticizer, cyclohexyl ester-capped glutaric acid oligomeric lactate (CGOL) with many poly(lactic acid) (PLA) matrix repeating units, applicable for plasticizing both poly(vinyl chloride) (PVC) and PLA, was designed and developed through a two-step esterification reaction route. Due to the growing concerns about the environment and health, we used biobased raw materials to synthesize the biobased plasticizer with the hope of potentially replacing petroleum-based plasticizers that are already widely used. The molecular structure of CGOL was confirmed, and then CGOL was blended with PVC or PLA for performance testing. Compared with commercial plasticizers, it had better comprehensive plasticization performance, showing high thermal stability, mechanical stability, and migration stability in both PVC and PLA polymers, which could be demonstrated by thermogravimetric analysis, tensile tests, and migration resistance test results. Among all PVC blends containing 50 phr plasticizer, CGOL plasticized PVC films exhibited the highest elongation at break (736.3%) and initial degradation temperature (T_i, CGOL-50 = 273.5 °C), the lowest glass transition temperature (T_g = 24.8 °C), and minimal migration in various environments, better than that of commercial ATBC, DOTP, and DOP. As for PLA blends, CGOL plasticized PLA films outperformed PLA/ATBC films in terms of comprehensive performance. Overall, CGOL demonstrated potential as a novel green substitute plasticizer for preparing flexible products of PVC and PLA.

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高稳定性生物基低聚乳酸增塑剂的构建与合成:适用于PVC和PLA聚合物

通过两步酯化反应，设计并研制了一种新型绿色增塑剂——具有多个聚乳酸(PLA)基体重复单元的环己基酯包盖戊二酸低聚乳酸(CGOL)，该增塑剂既可塑聚氯乙烯(PVC)，也可塑聚乳酸(PLA)。由于人们对环境和健康的日益关注，我们使用生物基原料合成生物基增塑剂，希望有可能取代已经广泛使用的石油基增塑剂。确定了CGOL的分子结构，然后将CGOL与PVC或PLA共混进行性能测试。与市售增塑剂相比，该增塑剂具有更好的综合增塑性能，在PVC和PLA聚合物中均表现出较高的热稳定性、机械稳定性和迁移稳定性，热重分析、拉伸试验和迁移阻力试验结果均证明了这一点。在含50 phr增塑剂的PVC共混物中，CGOL增塑剂PVC膜的断裂伸长率最高(736.3%)，初始降解温度(Ti, CGOL-50 = 273.5℃)，玻璃化转变温度最低(Tg = 24.8℃)，在各种环境中的迁移最小，优于商用ATBC、DOTP和DOP。在PLA共混物方面，CGOL塑化PLA薄膜综合性能优于PLA/ATBC薄膜。总的来说，CGOL作为一种新型的绿色替代增塑剂，在制备PVC和PLA柔性产品方面具有潜力。

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来源期刊

Industrial & Engineering Chemistry Research 工程技术-工程：化工

CiteScore

7.40

自引率

7.10%

发文量

1467

审稿时长

2.8 months

期刊介绍： ndustrial & Engineering Chemistry, with variations in title and format, has been published since 1909 by the American Chemical Society. Industrial & Engineering Chemistry Research is a weekly publication that reports industrial and academic research in the broad fields of applied chemistry and chemical engineering with special focus on fundamentals, processes, and products.