An investigation of the effect of methyl cellulose and sodium polyacrylate on the hydrosorption properties of a vulcanisate based on chloroprene rubber*

Ivanova, А. А.; Ushmarin, Nikolay F.; Egorov, E. N.; Sandalov, Sergey I.; Kol’tsov, N. I.

doi:10.1177/0307174x18450705

Cited by 2 publications

(2 citation statements)

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“…The ability of cellulose to absorb moisture well [14][15][16][17][18] allows for the use of lignocellulose raw materials as a filler in the creation of water-swelling polymer materials (PM), which have found application as sealing elements in building structures and sleeves for casing packers used in the oil and gas industry [19][20][21][22][23][24].…”

Section: Introductionmentioning

confidence: 99%

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Influence of Partially Carboxylated Powdered Lignocellulose from Oat Straw on Technological and Strength Properties of Water-Swelling Rubber

Cherezova,

Karaseva,

Nakyp

et al. 2024

Polymers

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The work is aimed at the development of an energy-saving technique involving the partial carboxylation of powdered lignocellulose products from the straw of annual agricultural plants and the use of the obtained products in rubber compositions as a water-swelling filler. Lignocellulosе powder from oat straw (composition: ɑ-cellulose—77.0%, lignin—3.8%, resins and fats—1.8%) was used for carboxylation without preliminary separation into components. Microwave radiation was used to activate the carboxylation process. This reduced the reaction time by 2–3 times. The synthesized products were analyzed by IR spectroscopy, thermogravimetry and scanning electron microscopy. Industrial product sodium carboxymethylcellulose (Na-CMC) was used as a swelling filler for comparison. The swelling fillers were fractionated by the sieve method; particles with the size of 0–1 mm were used for filling rubber compounds. The amount of swelling filler was 150 parts per 100 parts of rubber (phr). Due to the high filling of rubber compounds, plasticizer Oxal T-92 was added to the composition of a number of samples to facilitate the processing and uniform distribution of ingredients. The rubber composition was prepared in two stages. In the first stage, ingredients without swelling filler were mixed with rubber on a laboratory two-roll mill to create a base rubber compound (BRC). In the second stage, the BRC was mixed with the swelling filler in a closed laboratory plasti-corder rubber mixer, the Brabender Plasti-Corder® Lab-Station. Vulcanization was carried out at 160 °C. For the obtained samples, the physical-mechanical and sorption properties were determined. It has been shown that the carboxylated powdered lignocellulose from oat straw increases the strength properties of rubber in comparison with Na-CMC. It has been shown that when the carboxylated powdered lignocellulose from oat straw is introduced into the rubber composition, the degree of rubber swelling in aqueous solutions of various mineralizations increases by 50 and 100% in comparison with a noncarboxylated lignocellulose.

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Section: Introductionmentioning

confidence: 99%

“…16, 282 11 of 15 is about 10%. At the same time, there is a general trend of decrease in the degree of swelling during the transition from Na-CMC to PC-Oat.…”

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confidence: 99%