Comprehensive Analysis of 3D Printed PETG‐LDPE Composites: Structure–Property Relationship and Shape Memory Behavior.

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Title: Comprehensive Analysis of 3D Printed PETG‐LDPE Composites: Structure–Property Relationship and Shape Memory Behavior.
Authors: Zhao, Cheng1 (AUTHOR) 373292176@qq.com, Zhang, Hao2 (AUTHOR)
Source: Polymers for Advanced Technologies. May2026, Vol. 37 Issue 5, p1-18. 18p.
Subjects: Composite materials, Shape memory effect, Microstructure, Thermoplastics, Low density polyethylene, Three-dimensional printing, Thermal analysis, Mechanical behavior of materials
Abstract: Regarding the inferior mechanical performance and physical characteristics of low‐density polyethylene, this study explores the development and characterization of LDPE and PETG with varying PETG concentrations (55 wt.%, 70 wt.%, and 85 wt.%) to evaluate their shape memory properties, stress relaxation, thermal analysis and printing ability. Tensile testing revealed significant variations in mechanical performance, with strength increasing by 37%, from 17.04 MPa for PETG55 to 23.42 MPa for PETG85. DMTA highlighted PETG's dominant influence on the composites' thermomechanical behavior, with the glass transition temperature peaking at approximately 87°C. Shape memory testing demonstrated fixity ratios of 92%–93% for all compositions and recovery ratios ranging from 86% to 96%, with the highest recovery ratio observed in PETG85. The behavior of the cyclic shape memory up to the fifth cycle shows a gradual decrease until the third pass and then a stabilization. SEM provided detailed insights into the composites' microstructure, revealing interfacial bonding quality, void formation, and phase distribution, characterized by a PETG matrix‐droplet morphology. This study establishes that higher PETG content enhances thermal stability, mechanical strength, and shape memory performance, while increased LDPE content contributes to improved stress relaxation and processing flexibility. These results position PETG‐LDPE composites as promising candidates for high‐performance applications in aerospace and industrial environments, particularly where shape memory behavior and tailored thermomechanical properties are required. [ABSTRACT FROM AUTHOR]
Copyright of Polymers for Advanced Technologies is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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An: 194057222
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  Data: Comprehensive Analysis of 3D Printed PETG‐LDPE Composites: Structure–Property Relationship and Shape Memory Behavior.
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  Data: <searchLink fieldCode="AR" term="%22Zhao%2C+Cheng%22">Zhao, Cheng</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> 373292176@qq.com</i><br /><searchLink fieldCode="AR" term="%22Zhang%2C+Hao%22">Zhang, Hao</searchLink><relatesTo>2</relatesTo> (AUTHOR)
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  Data: <searchLink fieldCode="DE" term="%22Composite+materials%22">Composite materials</searchLink><br /><searchLink fieldCode="DE" term="%22Shape+memory+effect%22">Shape memory effect</searchLink><br /><searchLink fieldCode="DE" term="%22Microstructure%22">Microstructure</searchLink><br /><searchLink fieldCode="DE" term="%22Thermoplastics%22">Thermoplastics</searchLink><br /><searchLink fieldCode="DE" term="%22Low+density+polyethylene%22">Low density polyethylene</searchLink><br /><searchLink fieldCode="DE" term="%22Three-dimensional+printing%22">Three-dimensional printing</searchLink><br /><searchLink fieldCode="DE" term="%22Thermal+analysis%22">Thermal analysis</searchLink><br /><searchLink fieldCode="DE" term="%22Mechanical+behavior+of+materials%22">Mechanical behavior of materials</searchLink>
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  Label: Abstract
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  Data: Regarding the inferior mechanical performance and physical characteristics of low‐density polyethylene, this study explores the development and characterization of LDPE and PETG with varying PETG concentrations (55 wt.%, 70 wt.%, and 85 wt.%) to evaluate their shape memory properties, stress relaxation, thermal analysis and printing ability. Tensile testing revealed significant variations in mechanical performance, with strength increasing by 37%, from 17.04 MPa for PETG55 to 23.42 MPa for PETG85. DMTA highlighted PETG's dominant influence on the composites' thermomechanical behavior, with the glass transition temperature peaking at approximately 87°C. Shape memory testing demonstrated fixity ratios of 92%–93% for all compositions and recovery ratios ranging from 86% to 96%, with the highest recovery ratio observed in PETG85. The behavior of the cyclic shape memory up to the fifth cycle shows a gradual decrease until the third pass and then a stabilization. SEM provided detailed insights into the composites' microstructure, revealing interfacial bonding quality, void formation, and phase distribution, characterized by a PETG matrix‐droplet morphology. This study establishes that higher PETG content enhances thermal stability, mechanical strength, and shape memory performance, while increased LDPE content contributes to improved stress relaxation and processing flexibility. These results position PETG‐LDPE composites as promising candidates for high‐performance applications in aerospace and industrial environments, particularly where shape memory behavior and tailored thermomechanical properties are required. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Polymers for Advanced Technologies is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
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    Identifiers:
      – Type: doi
        Value: 10.1002/pat.70610
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      – Code: eng
        Text: English
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        PageCount: 18
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      – SubjectFull: Composite materials
        Type: general
      – SubjectFull: Shape memory effect
        Type: general
      – SubjectFull: Microstructure
        Type: general
      – SubjectFull: Thermoplastics
        Type: general
      – SubjectFull: Low density polyethylene
        Type: general
      – SubjectFull: Three-dimensional printing
        Type: general
      – SubjectFull: Thermal analysis
        Type: general
      – SubjectFull: Mechanical behavior of materials
        Type: general
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      – TitleFull: Comprehensive Analysis of 3D Printed PETG‐LDPE Composites: Structure–Property Relationship and Shape Memory Behavior.
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            NameFull: Zhao, Cheng
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            NameFull: Zhang, Hao
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            – D: 01
              M: 05
              Text: May2026
              Type: published
              Y: 2026
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