A series of multiarm structure hyperbranched polyester‐b‐poly(ε‐caprolactone) (HEPCLs) with different lengths of poly(ε‐caprolactone) (PCL) segments (s = 3, 6, 7, 8) were synthesized. Hyperbranched polyester (HE) was synthesized from glycidol and succinic anhydride and used as a macromolecular polymerization initiator for ε‐caprolactone. The HEPCLs were used as polyvinyl chloride (PVC) plasticizers and the mechanical properties, thermal properties, morphology, and migration stabilities of PVC films were explored. The plasticizing efficiency increased with the increase in PCL segments, and the plasticizing efficiency of HEPCL₈ exceeded that of dioctyl phthalate. Scanning electron microscopy and solid‐state ¹H NMR showed that the HEPCLs possess better compatibility with PVC than HE. Moreover, HEPCLs exhibited excellent migration stability even at very harsh condition, indicating that HEPCLs can be used as no‐migration PVC plasticizers in medical products, children's toys, and food packaging. J. VINYL ADDIT. TECHNOL., 26:35–42, 2020. © 2019 Society of Plastics Engineers

中文翻译：

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多臂超支化聚酯-b-聚（ε-己内酯）：PVC的增塑作用和抗迁移性

合成了一系列具有不同长度的聚（ε-己内酯）（PCL）段长度（s = 3、6、7、8）的多臂结构超支化聚酯-b-聚（ε-己内酯）（HEPCL）。由缩水甘油和琥珀酸酐合成超支化聚酯（HE），并用作ε-己内酯的高分子聚合引发剂。HEPCL用作聚氯乙烯（PVC）增塑剂，并探讨了PVC膜的机械性能，热性能，形态和迁移稳定性。塑化效率随PCL链段的增加而增加，HEPCL ₈的塑化效率超过邻苯二甲酸二辛酯。扫描电子显微镜和固态¹ H NMR表明，HEPCL与PVC具有比HE更好的相容性。此外，即使在非常恶劣的条件下，HEPCL仍具有出色的迁移稳定性，这表明HEPCL可用作医疗产品，儿童玩具和食品包装中的非迁移PVC增塑剂。J.乙烯基添加物。TECHNOL。，26：35–42，2020.©2019塑料工程师协会