Polyethylene-grafted sheet-like silsesquioxane nanocomposites with unprecedented adhesion to polar substrates
Title | Polyethylene-grafted sheet-like silsesquioxane nanocomposites with unprecedented adhesion to polar substrates |
Publication Type | Journal Article |
Year of Publication | 2023 |
Authors | Sharma, V, Paulbudhe, U, Bachhar, N, Chikkali, SH, Kumaraswamy, G |
Journal | ACS Applied Polymer Materials |
Volume | 5 |
Issue | 8 |
Pagination | 5972-5983 |
Date Published | JUL |
Type of Article | Article |
ISSN | 2637-6105 |
Keywords | adhesion, 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. |
DOI | 10.1021/acsapm.3c00649 |
Type of Journal (Indian or Foreign) | Foreign |
Impact Factor (IF) | 5 |
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