Reutilization of crystalline waste plastics for modified asphalt using twin‐screw extrusion: Polyethylene and polypropylene as typical subjects

The key technologies for waste plastic modified asphalt were storage stability and low temperature performance. In order to reutilize waste plastics for modified asphalt, a simple strategy, which based on recrystallization of the waste plastics, was proposed in this article. It was found that the pr...

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Bibliographic Details
Published inJournal of applied polymer science Vol. 139; no. 30
Main Authors Li, Junwei, Jia, Shoubo, Yang, Dan, Li, Xin, Li, Dongdong, Ye, Xia, Guan, Pengbing, Zhao, Yongke
Format Journal Article
LanguageEnglish
Published Hoboken, USA John Wiley & Sons, Inc 10.08.2022
Wiley Subscription Services, Inc
Subjects
Addition polymerization
Crystal structure
Crystallinity
Deformation resistance
Extrusion
Low temperature
Materials science
modified asphalt
Polyethylenes
Polymers
Recrystallization
Storage stability
waste plastic
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Summary:The key technologies for waste plastic modified asphalt were storage stability and low temperature performance. In order to reutilize waste plastics for modified asphalt, a simple strategy, which based on recrystallization of the waste plastics, was proposed in this article. It was found that the pretreated waste plastics had higher crystallinity and smaller crystal size. Moreover, the deformation resistance and stability of the modified asphalt were improved. In addition, a rational mechanism called “polymer crystals confinement effect” was proposed to reveal the intrinsic correlation between the properties of crystalline waste plastics and modified asphalt.
Bibliography:Funding information
Transportation Science and Technology Development Plan of Tianjin, Grant/Award Numbers: 2022‐12, 2019‐14
ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 14
ISSN:0021-8995
1097-4628
DOI:10.1002/app.52690