{"title":"Characterization of Polyurethane Grafted with Bis(2-hydroxyethyl) Terephthalate","authors":"Yong-chan Chung, Sang Hyeon Kim, J. Choi, B. Chun","doi":"10.1080/03602559.2017.1410835","DOIUrl":null,"url":null,"abstract":"ABSTRACT Bis(2-hydroxyethyl) terephthalate (BHETPA) was grafted onto polyurethane (PU) to investigate the effects of BHETPA, which contains a rigid aromatic group and flexible hydroxyethyl groups, on the physical properties of PU. The cross-link density, viscosity, tensile strength, and shape recovery notably increased with an increase of BHETPA due to chemical cross-linking by BHETPA. A PU sample demonstrated excellent low-temperature flexibility compared with plain PU, showing complete recovery at approximately 0°C. Therefore, grafting BHETPA onto PU modified the thermal behavior and greatly improved the tensile stress, shape recovery, and low-temperature flexibility of PU compared to plain PU. GRAPHICAL ABSTRACT","PeriodicalId":20629,"journal":{"name":"Polymer-Plastics Technology and Engineering","volume":"22 1","pages":"1474 - 1484"},"PeriodicalIF":0.0000,"publicationDate":"2018-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Polymer-Plastics Technology and Engineering","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1080/03602559.2017.1410835","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"Materials Science","Score":null,"Total":0}
引用次数: 1
Abstract
ABSTRACT Bis(2-hydroxyethyl) terephthalate (BHETPA) was grafted onto polyurethane (PU) to investigate the effects of BHETPA, which contains a rigid aromatic group and flexible hydroxyethyl groups, on the physical properties of PU. The cross-link density, viscosity, tensile strength, and shape recovery notably increased with an increase of BHETPA due to chemical cross-linking by BHETPA. A PU sample demonstrated excellent low-temperature flexibility compared with plain PU, showing complete recovery at approximately 0°C. Therefore, grafting BHETPA onto PU modified the thermal behavior and greatly improved the tensile stress, shape recovery, and low-temperature flexibility of PU compared to plain PU. GRAPHICAL ABSTRACT
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