Nanocellulose Aerogels for Supporting Iron Catalysts and In Situ Formation of Polyethylene Nanocomposites

Abstract

Scheme 1. Freeze-drying of CNF hydrogels (identified by atomic force microscopy (AFM) height image; z-scale = 4 nm) leading to 2D sheet-like NC aerogels (image taken by scanning electron microscopy (SEM)) due to lamellar ice-templating.

Deconstruction and Reassembly of Renewable Polymers and Biocolloids into Next Generation Structured Materials

“…For instance, solvent-exchange/freeze-drying combination was used to achieve ChNF (partially deacetylated) networks with length scales below 100 nm and SSA over 300 m 2 /g . Many other examples in the literature corroborate such observations. ,− …”

Deconstruction and Reassembly of Renewable Polymers and Biocolloids into Next Generation Structured Materials

“…For instance, solvent-exchange/freeze-drying combination was used to achieve ChNF (partially deacetylated) networks with length scales below 100 nm and SSA over 300 m 2 /g . Many other examples in the literature corroborate such observations. ,− …”

A general strategy for heterogenizing olefin polymerization catalysts and the synthesis of polyolefins and composites

“…Numerous strategies have been developed to address this issue with varying success. One of the most direct and economic strategies is the immobilization of precatalysts on the surface of fibers or fillers, followed by the addition of aluminum cocatalysts and the in situ generation of composites through polymerization 54 , 55 ; however, the addition of aluminum cocatalysts and their removal after polymerization may interfere with interactions between the polymer matrices and fibers or fillers.…”

Nanocellulose, a Versatile Green Platform: From Biosources to Materials and Their Applications

“…However, nanocellulose can be easily homogeneously dispersed in the much less viscous monomer solution. Hees et al first impregnated nanocellulose with bisiminopyridine iron­(II) complexes, an excellent catalyst for ethylene polymerization at low pressures . High density poly­(ethylene) was then grown from the nanocellulose, forming a homogeneous composite with superior properties to melt-cast high density poly­(ethylene) and nanocellulose.…”

Deconstruction and Reassembly of Renewable Polymers and Biocolloids into Next Generation Structured Materials

“…For instance, solvent-exchange/freeze-drying combination was used to achieve ChNF (partially deacetylated) networks with length scales below 100 nm and SSA over 300 m 2 /g . Many other examples in the literature corroborate such observations. ,− …”

A general strategy for heterogenizing olefin polymerization catalysts and the synthesis of polyolefins and composites

“…Numerous strategies have been developed to address this issue with varying success. One of the most direct and economic strategies is the immobilization of precatalysts on the surface of fibers or fillers, followed by the addition of aluminum cocatalysts and the in situ generation of composites through polymerization 54 , 55 ; however, the addition of aluminum cocatalysts and their removal after polymerization may interfere with interactions between the polymer matrices and fibers or fillers.…”

Nanocellulose, a Versatile Green Platform: From Biosources to Materials and Their Applications

“…However, nanocellulose can be easily homogeneously dispersed in the much less viscous monomer solution. Hees et al first impregnated nanocellulose with bisiminopyridine iron­(II) complexes, an excellent catalyst for ethylene polymerization at low pressures . High density poly­(ethylene) was then grown from the nanocellulose, forming a homogeneous composite with superior properties to melt-cast high density poly­(ethylene) and nanocellulose.…”

Deconstruction and Reassembly of Renewable Polymers and Biocolloids into Next Generation Structured Materials

“…For instance, solvent-exchange/freeze-drying combination was used to achieve ChNF (partially deacetylated) networks with length scales below 100 nm and SSA over 300 m 2 /g . Many other examples in the literature corroborate such observations. ,− …”

A general strategy for heterogenizing olefin polymerization catalysts and the synthesis of polyolefins and composites

“…Numerous strategies have been developed to address this issue with varying success. One of the most direct and economic strategies is the immobilization of precatalysts on the surface of fibers or fillers, followed by the addition of aluminum cocatalysts and the in situ generation of composites through polymerization 54 , 55 ; however, the addition of aluminum cocatalysts and their removal after polymerization may interfere with interactions between the polymer matrices and fibers or fillers.…”

Nanocellulose, a Versatile Green Platform: From Biosources to Materials and Their Applications

“…However, nanocellulose can be easily homogeneously dispersed in the much less viscous monomer solution. Hees et al first impregnated nanocellulose with bisiminopyridine iron­(II) complexes, an excellent catalyst for ethylene polymerization at low pressures . High density poly­(ethylene) was then grown from the nanocellulose, forming a homogeneous composite with superior properties to melt-cast high density poly­(ethylene) and nanocellulose.…”