Self-Plasticized PVC Prepared by Introducing Fatty Acid to the PVC with Triglycidyl Isocyanurate as an Intermediate Bridge.
Self-Plasticized PVC Prepared by Introducing Fatty Acid to the PVC with Triglycidyl Isocyanurate as an Intermediate Bridge.
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通过将脂肪酸引入PVC的自塑性PVC，用triglycidyl异氰尿素作为中间桥。
DOI：
10.1021/acsomega.2c03655
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发表时间：
2022-10-11
期刊：
影响因子：
4.1
通讯作者：
Li, Mei
中科院分区：
文献类型：
--
作者：
Deng, Tianxiang;Li, Shouhai;Jia, Puyou;Yao, Na;Ding, Haiyang;Xu, Lina;Zhang, Yan;Yang, Xiaohua;Li, Mei
聚氯乙烯（PVC）不含邻苯二甲酸盐的自增塑符合绿色化学理念。在这项工作中，通过将蓖麻油酸、棕榈酸和油酸分别共价连接到 PVC 基质上，以 4-氨基苯硫酚和异氰脲酸三缩水甘油酯 (TGIC) 作为中间桥，制备了不含邻苯二甲酸酯、生物成分、非迁移的自增塑 PVC（4-an-TG-X-PVC；X = R、P 或 O）。 4-氨基苯硫酚和TGIC分别充当亲核试剂和热稳定物质。通过多种表征方法观察了 4-an-TG-X-PVC。具体而言，傅里叶变换红外光谱、1H核磁共振、凝胶渗透色谱和迁移稳定性测试证明了4-an-TG-X-PVC的成功合成。与纯PVC相比，4-an-TG-X-PVC的机械性能更好。 PVC的玻璃化转变温度（Tg）为81.24℃，而4-an-TG-X-PVC的玻璃化转变温度（Tg）下降至41.88、31.49和46.91℃。与纯 PVC 相比，4-an-TG-X-PVC 具有更高的断裂伸长率和更低的拉伸强度。同时，4-an-TG-X-PVC的热性能得到提升。热重-红外和热重-质谱表明，4-an-TG-X-PVC 在热环境中比纯 PVC 释放更少的 HCl。变色实验表明4-an-TG-P-PVC比4-an-TG-O-PVC和4-an-TG-R-PVC具有更好的热稳定性和更好的颜色。这项工作为解决对邻苯二甲酸盐的依赖提供了可行的解决方案，降低了人类健康和生态风险，并赋予 PVC 更高的热稳定性和不迁移性能。
The phthalate-free self-plasticization of poly(vinyl chloride) (PVC) conforms to the concept of green chemistry. In this work, phthalate-free, biocontaining, self-plasticized PVC with nonmigration (4-an-TG-X-PVC; X = R, P, or O) was prepared by covalent attachment of ricinoleic acid, palmitic acid, and oleic acid, respectively, to the PVC matrix with 4-aminothiophenol and triglycidyl isocyanurate (TGIC) as intermediate bridges. 4-Aminothiophenol and TGIC acted as the nucleophilic reagent and the thermally stable substance, respectively. The 4-an-TG-X-PVC was observed by diverse characterization methods. Specifically, Fourier transform infrared spectra, 1H nuclear magnetic resonance, gel permeation chromatography, and migration stability tests proved the successful synthesis of 4-an-TG-X-PVC. Compared to the neat PVC, the mechanical property of 4-an-TG-X-PVC is better. The glass transition temperature (Tg) of PVC is 81.24 °C, while that of 4-an-TG-X-PVC decreased to 41.88, 31.49, and 46.91 °C. The 4-an-TG-X-PVC showed higher elongation at break and lower tensile strength than neat PVC. Simultaneously, the thermal property of 4-an-TG-X-PVC got a boost. Thermogravimetry–infrared and thermogravimetry–mass spectrometry showed that 4-an-TG-X-PVC released less HCl than neat PVC in a thermal environment. Discoloration experiments demonstrated that 4-an-TG-P-PVC had better heat stabilization and better color than 4-an-TG-O-PVC and 4-an-TG-R-PVC. This work provides a viable solution to the dependence on phthalates, reduced human health and ecological risks, and endowed PVC with improved thermal stability and nonmigration performance.
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