Polyethylene-grafted sheet-like silsesquioxane nanocomposites with unprecedented adhesion to polar substrates

TitlePolyethylene-grafted sheet-like silsesquioxane nanocomposites with unprecedented adhesion to polar substrates
Publication TypeJournal Article
Year of Publication2023
AuthorsSharma, V, Paulbudhe, U, Bachhar, N, Chikkali, SH, Kumaraswamy, G
JournalACS Applied Polymer Materials
Volume5
Issue8
Pagination5972-5983
Date PublishedJUL
Type of ArticleArticle
ISSN2637-6105
Keywordsadhesion, clay, Nanocomposite, Polyethylene, silsesquioxane
Abstract

Polyethylene is a highly apolar polymer with very pooradhesionto most substrates, necessitating the use of tie layers. Therefore,the synthesis of functional polyethylene is a long-standing challengein catalytic ethylene polymerization. Here, we report the preparationof a nanocomposite comprising polyethylene covalently grafted ontosheet-like silsesquioxanes, with unprecedented adhesion to metal andglass. A norbornene-grafted, layered Mg-silsesquioxane is treatedwith Grubbs second-generation catalyst (G-II), and the identity ofcovalently tethered G-II is unambiguously ascertained. Covalentlytethered G-II catalyzes the ring opening metathesis polymerizationof cyclooctene to poly(cyclooctene). The resulting poly(cyclooctene)is catalytically hydrogenated to yield polyethylene. This polyethylenenanocomposite exhibited a bonding strength of the order of 100 MPaon stainless steel and aluminum, 10-fold higher than reported forengineered polyethylene copolymers. The nanocomposite exhibits anincrease in the polar component of surface energy, yet remains compatibleand cocrystallizes with a polyethylene matrix.

DOI10.1021/acsapm.3c00649
Type of Journal (Indian or Foreign)

Foreign

Impact Factor (IF)

5

Divison category: 
Polymer Science & Engineering
Database: 
Web of Science (WoS)

Add new comment