The Influence of Polystyrene Modifier and Plasticizer Nature on the Properties of Poly(vinyl chloride)

Levytskyj, Volodymyr; Laruk, Yuriy; Humenetsky, Taras; Sikora, Janusz W.

doi:10.23939/chcht09.02.199

Cited by 17 publications

(8 citation statements)

References 8 publications

(8 reference statements)

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“…Hereby there is a minor increase in water absorption values during long-term staying of polylactide in the water due to the plasticizing effect of the water leading to increased flexibility and easier orientation of PLA macromolecules [15]. At the same time, for almost all hydrophobic polymers, during their prolonged contact with water on the kinetic curves of water absorption there is a maximum associated with the process of washing up the polymer (desorption in the liquid phase).…”

Section: Resultsmentioning

confidence: 99%

Green Polymerization of Vinyl Acetate Using Maghnite-Na+, an Exchanged Montmorillonite Clay, as an Ecologic Catalyst

Cherifi¹,

Belbachir²,

Bennabi³

2021

ChChT

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In this work, the green polymerization of vinyl acetate is carried out by a new method which consists in the use of clay called Maghnite-Na+ as an ecological catalyst, non-toxic, inexpensive and recyclable by a simple filtration. X-ray diffraction and scanning electron microscopy showed that Maghnite-Na+ is successfully obtained after cationic treatment (sodium) on crude maghnite. It is an effective alternative to replace toxic catalysts such as benzoyl peroxide and azobisisobutyronitrile which are mostly used during the synthesis of polyvinyl acetate (PVAc) making the polymerization reaction less problematic for the environment. The synthesis reaction is less energetic by the use of recycled polyurethane as a container for the reaction mixture and is considered as a renewable material and a good thermal insulator maintaining the temperature of 273 K for 6 h. The reaction in bulk is also preferred to avoid the use of a solvent and therefore to stay in the context of green chemistry. In these conditions, the structure of obtained polymer is established by 1H NMR and 13C NMR. Infrared spectroscopy (FT-IR) was also used to confirm the structure of PVAc. Thermogravimetric analysis showed that it is thermally stable and starts to degrade at 603 K while differential scanning calorimetry showed that this polymer has a glass transition temperature Tg of 323 K.

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Section: Resultsmentioning

confidence: 99%

Green Polymerization of Vinyl Acetate Using Maghnite-Na+, an Exchanged Montmorillonite Clay, as an Ecologic Catalyst

Cherifi¹,

Belbachir²,

Bennabi³

2021

ChChT

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“…This is due to the possibility to use various fillers, as well as the high manufacturability of the polymer matrix, which makes it possible to process such composites and obtain products from them by high-performance methods. In addition, using a remarkably wide range of polymers on the market, one can control the properties of the final product, which, along with the use of different fillers, makes it possible to obtain materials with the desired properties [ 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 , 9 , 10 ].…”

Section: Introductionmentioning

confidence: 99%

Obtainment and Characterization of Metal-Coated Polyethylene Granules as a Basis for the Development of Heat Storage Systems

et al. 2022

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The research studied the feasibility of using copper-coated polyethylene granules as a basis for creating efficient heat storage systems. A technology for imparting catalytic properties to a polymer surface by the joint processing of polymer granules and an activator metal in a ball mill with their subsequent metallization in a chemical reducing solution is proposed. The efficiency of copper-coating a polyethylene surface is shown to be largely determined by the activation stage and the assumption regarding the mechanism of interaction of the activator metal with the polymer surface is made. To obtain different amounts of metal on the polyethylene granules, it is proposed that the method of remetallization is used. It was established that the rate of copper ion reduction depends on the number of previous coatings and is determined by the area of interaction of the metal-coated granules with the chemical reducing solution. The obtained metal-coated polyethylene granules were characterized in terms of the viability of using it as a phase transition material for a heat storage system. Using the developed installation that simulates the heat accumulator operation, it was shown that the efficiency of using metal-coated polyethylene granules to create heat storage systems is higher. The copper coating deposited on the polyethylene granules was studied using scanning electron microscopy and X-ray diffraction analysis.

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“…Among the physical methods of polymer materials modification which allow directional influence on the supramolecular structure and properties the prevalent are: creation of polymer blends of different nature (thermoplastic with each other and thermosetting with thermoplastic [1][2][3]); creation of polymer composites with inert fillers of different nature [4][5][6]; modification of polymer materials with active additives (nucleators, plasticizers, foamers [7][8][9]).…”

Section: Introductionmentioning

confidence: 99%

Properties of the Composites Made of Glauconite and Polyaniline in Aqueous Solutions of Phosphoric Acid

Nesterivska¹,

Makogon²,

Yatsyshyn³

et al. 2020

ChChT

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The Influence of Polystyrene Modifier and Plasticizer Nature on the Properties of Poly(vinyl chloride)

Cited by 17 publications

References 8 publications

Green Polymerization of Vinyl Acetate Using Maghnite-Na+, an Exchanged Montmorillonite Clay, as an Ecologic Catalyst

Green Polymerization of Vinyl Acetate Using Maghnite-Na+, an Exchanged Montmorillonite Clay, as an Ecologic Catalyst

Obtainment and Characterization of Metal-Coated Polyethylene Granules as a Basis for the Development of Heat Storage Systems

Properties of the Composites Made of Glauconite and Polyaniline in Aqueous Solutions of Phosphoric Acid

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