Direct Observation of Long-Chain Branches in a Low-Density Polyethylene

Direct Observation of Long-Chain Branches in a Low-Density Polyethylene

Low-density polyethylene (LDPE) has short-chain branch (SCB) and long-chain branch (LCB). In particular, the influence of the structure of LCBs on polymer properties is remarkable; however, it has been difficult to precisely analyze LCB structures. In this study, we measured the chain length of LCBs...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:Scientific reports 2019-07, Vol.9 (1), p.9791-5, Article 9791
Hauptverfasser: Shinohara, Ken-ichi, Yanagisawa, Masahiro, Makida, Yuu
Format: Artikel
Sprache:eng
Schlagworte:
639/638/455/958
639/925/930/2735
Atomic force microscopy
Humanities and Social Sciences
Low density polyethylenes
multidisciplinary
Polyethylene
Polymers
Science
Science (multidisciplinary)
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:Low-density polyethylene (LDPE) has short-chain branch (SCB) and long-chain branch (LCB). In particular, the influence of the structure of LCBs on polymer properties is remarkable; however, it has been difficult to precisely analyze LCB structures. In this study, we measured the chain length of LCBs and the distance between branch points of LDPE by atomic force microscopy. Consequently, three LCBs were confirmed in a main chain of 162 nm, and their length were measured as 10, 31, and 18 nm. The positions of the LCBs were 33, 70, and 78 nm from the main-chain end.
ISSN:2045-2322
2045-2322
DOI:10.1038/s41598-019-46035-9