DL-Isoborneol esters as nontoxic main plasticizers for polyvinyl chloride with improved processability, thermal stability, and mechanical performance

IF 3.8 4区工程技术 Q2 CHEMISTRY, APPLIED Journal of Vinyl & Additive Technology Pub Date : 2024-06-27 DOI:10.1002/vnl.22126

Hong-ying Chu, Chuan Gao, Shuai Huang, Xin-Ding Yao

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Abstract

DL-Isoborneol is a forestry chemical product that can serve as an intermediate in the synthesis of value-added plasticizer products. In this study, three kinds of DL-Isoborneol esters (octanoic acid-DL-Isoborneol, decanoic acid-DL-Isoborneol ester, and lauric acid-DL-Isoborneol ester [LDE]) with different fatty hydrocarbon chains were synthesized via esterification reaction. Fourier transform infrared spectrometer (FT-IR) and Nuclear magnetic hydrogen spectrum (¹H NMR) indicated that DL-Isoborneol esters were successfully synthesized. The oral toxicity experiment of plasticizers in mice indicated that DL-Isoborneol esters have toxic doses of 5000 mg/kg and was environmentally friendly and nontoxic. DL-Isoborneol esters were used as main plasticizers to plasticize polyvinyl chloride (PVC) and compared with commercial plasticizer dioctyl phthalate (DOP). The results showed that DL-Isoborneol esters could improve thermoplastic processing performance and thermal stability of plasticized PVC than DOP. DL-Isoborneol esters and PVC showed more excellent compatibility compared with DOP. T_g of plasticized PVC reached 22°C, tensile strength and elongation at break of PVC plasticized with 40 wt% LDE reached 12.90 ± 0.83 MPa and 342 ± 13%, respectively. DL-Isoborneol esters with improved migration resistance performance and plasticization efficiency can completely replace DOP as main plasticizers for PVC.

Highlights

DL-Isoborneol esters with different fatty hydrocarbon chains were synthesized.
DL-Isoborneol esters have toxic doses of 5000 mg/kg and are nontoxic.
DL-Isoborneol esters can be used as main plasticizer for PVC.
Plasticized PVC with improved processability.
DOP can be completely replaced by DL-Isoborneol esters.

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DL 异龙脑酯作为聚氯乙烯的无毒主增塑剂，可改善加工性、热稳定性和机械性能

DL-Isoborneol 是一种林业化工产品，可作为合成高附加值增塑剂产品的中间体。本研究通过酯化反应合成了三种不同脂肪烃链的 DL-异冰片醇酯（辛酸-DL-异冰片醇酯、癸酸-DL-异冰片醇酯和月桂酸-DL-异冰片醇酯 [LDE]）。傅立叶变换红外光谱仪（FT-IR）和核磁氢谱（1H NMR）表明，DL-异冰片醇酯已成功合成。增塑剂小鼠口服毒性实验表明，DL-异冰片醇酯的毒性剂量为 5000 毫克/千克，对环境友好且无毒。以 DL-异冰片醇酯为主要增塑剂对聚氯乙烯（PVC）进行增塑，并与商用增塑剂邻苯二甲酸二辛酯（DOP）进行比较。结果表明，与 DOP 相比，DL-异冰片醇酯能改善塑化聚氯乙烯的热塑性加工性能和热稳定性。与 DOP 相比，DL-异冰片醇酯与 PVC 的相容性更佳。塑化聚氯乙烯的 Tg 达到 22°C，用 40 wt% LDE 塑化的聚氯乙烯的拉伸强度和断裂伸长率分别达到 12.90 ± 0.83 MPa 和 342 ± 13%。要点合成了具有不同脂肪烃链的 DL 异冰片醇酯。DL-异冰片醇酯的毒性剂量为 5000 mg/kg，无毒。DL 异冰片醇酯可用作聚氯乙烯的主要增塑剂。增塑聚氯乙烯可提高加工性能。DL 异冰片醇酯可完全取代 DOP。

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来源期刊

Journal of Vinyl & Additive Technology 工程技术-材料科学：纺织

CiteScore

5.40

自引率

14.80%

发文量

审稿时长

>12 weeks

期刊介绍： Journal of Vinyl and Additive Technology is a peer-reviewed technical publication for new work in the fields of polymer modifiers and additives, vinyl polymers and selected review papers. Over half of all papers in JVAT are based on technology of additives and modifiers for all classes of polymers: thermoset polymers and both condensation and addition thermoplastics. Papers on vinyl technology include PVC additives.