{"title":"蓖麻油生物基增塑剂对聚乳酸的塑化作用","authors":"Yi-jie Yang, Qiang Dou","doi":"10.1007/s10924-025-03612-6","DOIUrl":null,"url":null,"abstract":"<div><p>Two bio-based plasticizers derived from castor oil: raw butyl ricinoleate (RBR) and castor oil glycidyl ether (COGE) were used to plasticize polylactic acid (PLA) by one-step melt blending method. Compatibility analyses revealed that the generation of the branched products between epoxide groups of COGE and carboxyl groups of residual ricinoleic acid (RA) in the RBR and PLA improved the compatibility of the blends. The blends were characterized using scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), rheology, thermogravimetry (TG), differential scanning calorimetry (DSC), polarized light microscopy (PLM), contact angle measurement and tensile test. The results showed that COGE could act as a compatibilizer and interact with carboxyl groups in RBR and PLA, significantly improving the interfacial compatibility, thermal stability and ductility of the blends. The generation of the entanglements among the molecular chains weakened the crystallization capacity of the ternary blends. The extension of molecular chains and entanglement of branched chains also increased the viscosity of the blends. Thanks to the synergistic application of RBR and COGE, the strain at break of PLA/RBR/COGE (85/3.75/11.25) blends reached 146%, which was 14.9 times larger than that of pure PLA. These blends presented excellent mechanical performance and processing ability, and thus have application scenarios in biodegradable packages and articles.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":659,"journal":{"name":"Journal of Polymers and the Environment","volume":"33 7","pages":"3241 - 3258"},"PeriodicalIF":5.0000,"publicationDate":"2025-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Plasticization of Poly(lactic acid) by Bio-based Plasticizers Derived from Castor Oil\",\"authors\":\"Yi-jie Yang, Qiang Dou\",\"doi\":\"10.1007/s10924-025-03612-6\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>Two bio-based plasticizers derived from castor oil: raw butyl ricinoleate (RBR) and castor oil glycidyl ether (COGE) were used to plasticize polylactic acid (PLA) by one-step melt blending method. Compatibility analyses revealed that the generation of the branched products between epoxide groups of COGE and carboxyl groups of residual ricinoleic acid (RA) in the RBR and PLA improved the compatibility of the blends. The blends were characterized using scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), rheology, thermogravimetry (TG), differential scanning calorimetry (DSC), polarized light microscopy (PLM), contact angle measurement and tensile test. The results showed that COGE could act as a compatibilizer and interact with carboxyl groups in RBR and PLA, significantly improving the interfacial compatibility, thermal stability and ductility of the blends. The generation of the entanglements among the molecular chains weakened the crystallization capacity of the ternary blends. The extension of molecular chains and entanglement of branched chains also increased the viscosity of the blends. Thanks to the synergistic application of RBR and COGE, the strain at break of PLA/RBR/COGE (85/3.75/11.25) blends reached 146%, which was 14.9 times larger than that of pure PLA. These blends presented excellent mechanical performance and processing ability, and thus have application scenarios in biodegradable packages and articles.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>\",\"PeriodicalId\":659,\"journal\":{\"name\":\"Journal of Polymers and the Environment\",\"volume\":\"33 7\",\"pages\":\"3241 - 3258\"},\"PeriodicalIF\":5.0000,\"publicationDate\":\"2025-05-23\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Polymers and the Environment\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s10924-025-03612-6\",\"RegionNum\":3,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"ENGINEERING, ENVIRONMENTAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Polymers and the Environment","FirstCategoryId":"5","ListUrlMain":"https://link.springer.com/article/10.1007/s10924-025-03612-6","RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENGINEERING, ENVIRONMENTAL","Score":null,"Total":0}
Plasticization of Poly(lactic acid) by Bio-based Plasticizers Derived from Castor Oil
Two bio-based plasticizers derived from castor oil: raw butyl ricinoleate (RBR) and castor oil glycidyl ether (COGE) were used to plasticize polylactic acid (PLA) by one-step melt blending method. Compatibility analyses revealed that the generation of the branched products between epoxide groups of COGE and carboxyl groups of residual ricinoleic acid (RA) in the RBR and PLA improved the compatibility of the blends. The blends were characterized using scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), rheology, thermogravimetry (TG), differential scanning calorimetry (DSC), polarized light microscopy (PLM), contact angle measurement and tensile test. The results showed that COGE could act as a compatibilizer and interact with carboxyl groups in RBR and PLA, significantly improving the interfacial compatibility, thermal stability and ductility of the blends. The generation of the entanglements among the molecular chains weakened the crystallization capacity of the ternary blends. The extension of molecular chains and entanglement of branched chains also increased the viscosity of the blends. Thanks to the synergistic application of RBR and COGE, the strain at break of PLA/RBR/COGE (85/3.75/11.25) blends reached 146%, which was 14.9 times larger than that of pure PLA. These blends presented excellent mechanical performance and processing ability, and thus have application scenarios in biodegradable packages and articles.
期刊介绍：
The Journal of Polymers and the Environment fills the need for an international forum in this diverse and rapidly expanding field. The journal serves a crucial role for the publication of information from a wide range of disciplines and is a central outlet for the publication of high-quality peer-reviewed original papers, review articles and short communications. The journal is intentionally interdisciplinary in regard to contributions and covers the following subjects - polymers, environmentally degradable polymers, and degradation pathways: biological, photochemical, oxidative and hydrolytic; new environmental materials: derived by chemical and biosynthetic routes; environmental blends and composites; developments in processing and reactive processing of environmental polymers; characterization of environmental materials: mechanical, physical, thermal, rheological, morphological, and others; recyclable polymers and plastics recycling environmental testing: in-laboratory simulations, outdoor exposures, and standardization of methodologies; environmental fate: end products and intermediates of biodegradation; microbiology and enzymology of polymer biodegradation; solid-waste management and public legislation specific to environmental polymers; and other related topics.
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