Copolymerization of Ethylene and 10‐Undecen‐1‐ol using a Montmorillonite‐Intercalated Metallocene Catalyst: Synthesis of Polyethylene/Montmorillonite Nanocomposites with Enhanced Structural Stability

Abstract

Summary: Ethylene and 10‐undecen‐1‐ol have been successfully copolymerized by an organically modified montmorillonite (OMMT)‐intercalated metallocene catalyst, Et[Ind]2ZrCl2, activated by methylaluminoxane (MAO). The obtained hydroxy‐functionalized polyethylene (PE‐OH)/OMMT nanocomposites exhibit enhanced structural stability as compared with the neat PE‐based ones, with no significant collapse of the nanocomposite structure being detected by WAXD examination after high‐temperature processing. The simultaneous polyolefin functionalization provides an effective and convenient solution to stabilize the PE/MMT nanocomposite structure formed by in‐situ polymerization. magnified image

Improving the thermal and mechanical properties of poly(propylene carbonate) by incorporating functionalized graphite oxide

“…17 However, it is still a challenging work to obtain the complete exfoliated structure of layered fillers in the polymer matrix although many methods have been developed. [18][19][20][21] Graphite oxide (GO) has been proposed as a novel substitute of graphite for the fabrication of polymer/ graphite composite. 15,[22][23][24] Upon oxidation, some functional groups can be introduced in the structure of graphite.…”

Polyolefin-Clay Nanocomposites from Olefin Polymerization between Clay Layers

“…The preparation of polyolefin/clay nanocomposites from olefin polymerization is essentially the same although four types of catalysts including Ziegler-Natta catalysts [12][13][14][15][16][17][18][19][20][21][22], metallocene catalysts [23][24][25][26][27][28][29][30][31][32][33][34][35][36][37][38], non-metallocene catalysts [39], and late transition metal (LTM) catalysts [40][41][42] are used. To achieve uniform dispersion of clay layers throughout polyolefin matrix, the key factor is the immobilization of precatalysts onto clay.…”

“…OMMT-intercalated rac-Et(Ind) 2 ZrCl 2 copolymerized ethylene and 10-undecen-1-ol with MAO the activator to form PE/MMT nanocomposites with comparable catalytic activities [34]. Taking similar route, p-methylstyrene (pMSt) was introduced to PE matrix which claimed to obtain structurally stable PE/MMT nanocomposites ( Fig.…”

Reactivity Comparison of ω-Alkenols and Higher 1-Alkenes in Copolymerization with Propylene Using An Isospecific Zirconocene-MMAO Catalyst

“…The copolymerization of ethylene with alkylaluminum-protected polar comonomer has been studied extensively for the synthesis of functionalized polyethylene bearing alcohol [7][8][9][10][11][12][13][14][15][16][17][18], ester [8,9,19,20], ether [10,21], and acid functionalities [8,9,11,17]. However, the copolymerization activity of almost all of these catalytic systems dropped significantly compared to the homopolymerization of ethylene.…”