{"title":"柠檬酸固化环氧大豆油低聚物两步共混增强淀粉基复合材料性能","authors":"Thanaboon Pansuwan, Hiroshi Ito, Ken Miyata","doi":"10.1007/s10924-025-03613-5","DOIUrl":null,"url":null,"abstract":"<div><p>This study aimed to improve the dispersion of epoxy preoligomer (EPO) in a starch-based composite using a two-step blending process. EPO was prepared via the epoxy ring-opening reaction between epoxidized soybean oil and citric acid. Starch was plasticized in the first step to unfold its complex structure, followed by blending with EPO in the second step. The results showed that the two-step blending process improved tensile strength from 3.1 to 8.8 MPa and the elongation at break from 120.2 to 151.0% compared with the one-step blending mixing of starch and EPO. Fourier transform infrared microscopy confirmed the crosslinking reaction with well-dispersion of EPO in the composite matrix. Morphology analysis showed the compatibility between the starch and EPO phases was improved compared with the simultaneous blending process, which was also confirmed by analyzing the melting behavior through differential scanning calorimetry and dynamic mechanical analysis. The EPO content affects the final properties of the starch composite. The moisture content and water uptake decreased upon the addition of EPO. The present strategy offers a novel and simple blending process for the preparation of starch–EPO composites with superior characteristics.</p></div>","PeriodicalId":659,"journal":{"name":"Journal of Polymers and the Environment","volume":"33 8","pages":"3733 - 3748"},"PeriodicalIF":5.0000,"publicationDate":"2025-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Reinforcement of Starch-Based Composite Properties via a Two-Step Blending Process with Citric Acid–Cured Epoxidized Soybean Oil Oligomer\",\"authors\":\"Thanaboon Pansuwan, Hiroshi Ito, Ken Miyata\",\"doi\":\"10.1007/s10924-025-03613-5\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>This study aimed to improve the dispersion of epoxy preoligomer (EPO) in a starch-based composite using a two-step blending process. EPO was prepared via the epoxy ring-opening reaction between epoxidized soybean oil and citric acid. Starch was plasticized in the first step to unfold its complex structure, followed by blending with EPO in the second step. The results showed that the two-step blending process improved tensile strength from 3.1 to 8.8 MPa and the elongation at break from 120.2 to 151.0% compared with the one-step blending mixing of starch and EPO. Fourier transform infrared microscopy confirmed the crosslinking reaction with well-dispersion of EPO in the composite matrix. Morphology analysis showed the compatibility between the starch and EPO phases was improved compared with the simultaneous blending process, which was also confirmed by analyzing the melting behavior through differential scanning calorimetry and dynamic mechanical analysis. The EPO content affects the final properties of the starch composite. The moisture content and water uptake decreased upon the addition of EPO. The present strategy offers a novel and simple blending process for the preparation of starch–EPO composites with superior characteristics.</p></div>\",\"PeriodicalId\":659,\"journal\":{\"name\":\"Journal of Polymers and the Environment\",\"volume\":\"33 8\",\"pages\":\"3733 - 3748\"},\"PeriodicalIF\":5.0000,\"publicationDate\":\"2025-06-16\",\"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/s10924-025-03613-5\",\"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/s10924-025-03613-5","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}
Reinforcement of Starch-Based Composite Properties via a Two-Step Blending Process with Citric Acid–Cured Epoxidized Soybean Oil Oligomer
This study aimed to improve the dispersion of epoxy preoligomer (EPO) in a starch-based composite using a two-step blending process. EPO was prepared via the epoxy ring-opening reaction between epoxidized soybean oil and citric acid. Starch was plasticized in the first step to unfold its complex structure, followed by blending with EPO in the second step. The results showed that the two-step blending process improved tensile strength from 3.1 to 8.8 MPa and the elongation at break from 120.2 to 151.0% compared with the one-step blending mixing of starch and EPO. Fourier transform infrared microscopy confirmed the crosslinking reaction with well-dispersion of EPO in the composite matrix. Morphology analysis showed the compatibility between the starch and EPO phases was improved compared with the simultaneous blending process, which was also confirmed by analyzing the melting behavior through differential scanning calorimetry and dynamic mechanical analysis. The EPO content affects the final properties of the starch composite. The moisture content and water uptake decreased upon the addition of EPO. The present strategy offers a novel and simple blending process for the preparation of starch–EPO composites with superior characteristics.
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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