Functionalization of high-density polyethylene in the molten state by glycidyl methacrylate grafting

2001 ◽  
Vol 81 (3) ◽  
pp. 581-590 ◽  
Author(s):  
N. Torres ◽  
J. J. Robin ◽  
B. Boutevin
Keyword(s):  
High Density Polyethylene ◽  
Glycidyl Methacrylate ◽  
High Density ◽  
Molten State

scholarly journals Impact of Polymer Binders on the Structure of Highly Filled Zirconia Feedstocks

Polymers ◽  
2020 ◽  
Vol 12 (10) ◽  
pp. 2247
Author(s):  
Claire Delaroa ◽  
René Fulchiron ◽  
Eric Lintingre ◽  
Zoé Buniazet ◽  
Philippe Cassagnau
Keyword(s):  
Pore Size Distribution ◽  
Pore Size ◽  
Size Distribution ◽  
High Density Polyethylene ◽  
Mercury Porosimetry ◽  
High Density ◽  
Organic Binder ◽  
Molten State ◽  
Homogeneous Dispersion ◽  
The Impact

The impact of polypropylene and high-density polyethylene backbone binders on the structure of organic matrix, feedstock, and ceramic parts is investigated in terms of morphology in this paper. The miscibility of wax with polyethylene and polypropylene is investigated in the molten state via a rheological study, revealing wax full miscibility with high-density polyethylene and restricted miscibility with polypropylene. Mercury porosimetry measurements realized after wax extraction allow the characterization of wax dispersion in both neat organic blends and zirconia filled feedstocks. Miscibility differences in the molten state highly impact wax dispersion in backbone polymers after cooling: wax is preferentially located in polyethylene phase, while it is easily segregated from polypropylene phase, leading to the creation of large cracks during solvent debinding. The use of a polyethylene/polypropylene ratio higher than 70/30 hinders wax segregation and favors its homogeneous dispersion in organic binder. As zirconia is added to organic blends containing polyethylene, polypropylene, and wax, the pore size distribution created by wax extraction is shifted towards smaller pores. Above zirconia percolation at 40 vol%, the pore size distribution becomes sharp attesting of wax homogeneous dispersion. As the PP content in the organic binder decreases from 100% to 0%, the pore size distribution is reduced of 30%, leading to higher densification ability. In order to ensure a maximal densification of the final ceramic, polyethylene/polypropylene ratios with a minimum content of 70% of high-density polyethylene should be employed.

Grafting of glycidyl methacrylate onto high-density polyethylene with reaction time in the batch mixer

2008 ◽  
Vol 108 (2) ◽  
pp. 1093-1099 ◽  
Author(s):  
Kuk Young Cho ◽  
Ji-Yong Eom ◽  
Chang-Hyeon Kim ◽  
Jung-Ki Park
Keyword(s):  
Reaction Time ◽  
High Density Polyethylene ◽  
Glycidyl Methacrylate ◽  
High Density ◽  
Batch Mixer

scholarly journals Preparation and properties of long chain branched high-density polyethylene based on nano-SiO2 grafted glycidyl methacrylate

RSC Advances ◽  
2019 ◽  
Vol 9 (2) ◽  
pp. 1123-1133
Author(s):  
Lijin Xie ◽  
Xiaokun Liang ◽  
Hongwei Huang ◽  
Le Yang ◽  
Feng Zhang ◽  
...  
Keyword(s):  
High Density Polyethylene ◽  
Glycidyl Methacrylate ◽  
High Density ◽  
Double Bonds ◽  
Nano Sio2 ◽  
Long Chain

A compounded nanoparticle with multiple double bonds (CC) was prepared by grafting glycidyl methacrylate (GMA) onto the surface of nano-SiO2.

Grafting of fluorinated oligomers on to high-density polyethylene (HDPE) in the molten state

1995 ◽  
Vol 73 (1) ◽  
pp. 79-82 ◽  
Author(s):  
Bernard Boutevin ◽  
Jean-Marie Lusinchi ◽  
Yves Pietrasanta ◽  
Jean-Jacques Robin
Keyword(s):  
High Density Polyethylene ◽  
High Density ◽  
Molten State ◽  
Fluorinated Oligomers

scholarly journals Radiation induced emulsion grafting of glycidyl methacrylate onto high density polyethylene: A kinetic study

2014 ◽  
Vol 6 (2) ◽  
Author(s):  
Mohamed Mahmoud Nasef ◽  
Indriani Andromeda Sugiarmawan
Keyword(s):  
Radiation Dose ◽  
High Density Polyethylene ◽  
Glycidyl Methacrylate ◽  
Surfactant Concentration ◽  
Initial Rate ◽  
Monomer Concentration ◽  
High Density ◽  
Tween 20 ◽  
Grafting Reaction ◽  
Methacrylate Monomer

Emulsion graft polymerisation of glycidyl methacrylate monomer onto high density polyethylene (HDPE) resin was studied. The radicals required to initiate the reaction were produced in HDPE resin by irradiation with the electron beam accelerator at ambient and vacuum conditions. The grafting reaction of GMA with irradiated HDPE was initiated by emulsion method using Tween 20 as a surfactant and water as a solvent under controlled conditions. The kinetic behavior of grafting reaction was investigated with respect to the degree of grafting under various parameters i.e. monomer concentration, radiation dose, grafting temperature and surfactant concentration. The degree of grafting was found to be a function of the investigated parameters. Particularly, surfactant concentration in the emulsion was found to be crucial for determining the micelle size and eventually the degree of grafting. The order of dependence of the initial rate of grafting on the monomer concentration and the irradiation dose was found to be 0.94 and 0.60, respectively. The initial rate of grafting was also found to increase with the increase in the grafting temperature varied in the range of 308-333 K. The optimum reaction parameters required to obtain desired and reproducible degrees of grafting in the resin could be identified. Moreover, the emulsion radiation grafting method was found to offer essential advantages over the conventional grafting with solvents including low radiation dose, less monomer concentration and cost effectiveness.

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