Detail publikace

Comparative Analysis of Virgin and Recycled Thermoplastic Polymer based on Thermochemical Characteristics

Petrovič A. Čolnik M. Prša A. Fan Y.V. Škerget M. Željko K. Klemeš J.J. Čuček L.

Anglický název

Comparative Analysis of Virgin and Recycled Thermoplastic Polymer based on Thermochemical Characteristics

Typ

článek v časopise ve Scopus, Jsc

Jazyk

en

Originální abstrakt

Plastics are among the most-used materials globally, with thousands of different grades and a wide range of applications. However, its end-of-life management is a common issue, despite most plastics produced today containing highly recyclable thermoplastics. The quality of recycled plastic material should be enhanced as it depends on several factors, such as cross-contamination, presence of additives, impurities and degradation rate. In this study, a comparative analysis of thermochemical characteristics of virgin and recycled commonly-used thermoplastic polymer, high-density polyethylene (HDPE), was performed to study the impact of recycling on the material properties. The proximate and ultimate analysis, identification of functional groups and thermal behaviour were performed to study the chemical changes in the recycled and virgin material. The results showed that recycled HDPE started to degrade at a lower temperature than virgin HDPE, with a lower degradation rate (92.7 wt.%) compared to virgin HDPE (99.6 wt.%) due to the presence of impurities and other factors. Calorific values of both samples were comparable, while the degree of crystallinity was 79.8 % for virgin HDPE and around 19 % lower for recycled HDPE samples. Significant differences between recycled and virgin material were also obtained in terms of melting and crystallisation enthalpies.

Anglický abstrakt

Plastics are among the most-used materials globally, with thousands of different grades and a wide range of applications. However, its end-of-life management is a common issue, despite most plastics produced today containing highly recyclable thermoplastics. The quality of recycled plastic material should be enhanced as it depends on several factors, such as cross-contamination, presence of additives, impurities and degradation rate. In this study, a comparative analysis of thermochemical characteristics of virgin and recycled commonly-used thermoplastic polymer, high-density polyethylene (HDPE), was performed to study the impact of recycling on the material properties. The proximate and ultimate analysis, identification of functional groups and thermal behaviour were performed to study the chemical changes in the recycled and virgin material. The results showed that recycled HDPE started to degrade at a lower temperature than virgin HDPE, with a lower degradation rate (92.7 wt.%) compared to virgin HDPE (99.6 wt.%) due to the presence of impurities and other factors. Calorific values of both samples were comparable, while the degree of crystallinity was 79.8 % for virgin HDPE and around 19 % lower for recycled HDPE samples. Significant differences between recycled and virgin material were also obtained in terms of melting and crystallisation enthalpies.

Klíčová slova anglicky

comparative; analysis; virgin; recycled; thermoplastic; polymer; thermochemical; characteristics

Vydáno

01.09.2022

Nakladatel

Italian Association of Chemical Engineering - AIDIC

ISSN

2283-9216

Číslo

94

Strany od–do

1321–1326

Počet stran

6

BIBTEX


@article{BUT180272,
  author="Yee Van {Fan} and Jiří {Klemeš},
  title="Comparative Analysis of Virgin and Recycled Thermoplastic Polymer based on Thermochemical Characteristics",
  year="2022",
  number="94",
  month="September",
  pages="1321--1326",
  publisher="Italian Association of Chemical Engineering - AIDIC",
  issn="2283-9216"
}