The Physicomechanical and Rheological Characteristics of Wood–polymer Composites Based on Thermally and Mechanically Modified Filler

Вольфсон, С. И.; Fayzullin, I.Z.; Мусин, И Н; Fayzullin, A.Z.; Грачев, А Н; Пушкин, С А

doi:10.1177/0307174x1704400208

Cited by 7 publications

(7 citation statements)

References 4 publications

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“…However, when obtaining polymer composites filled with natural fillers, the problem of the compatibility of the hydrophobic matrix and hydrophilic fillers arises. In this way, it is becoming important to study the modification of such polymer composites in order to improve the compatibility of components [ 4 , 5 ].…”

Section: Introductionmentioning

confidence: 99%

“…There are also various methods of plasma surface modification for polyolefins [ 12 , 13 ], which, while expensive, is an environmentally friendly and versatile method. In the articles [ 5 , 14 ], the authors presented a review of thermo-modification as a method for improving the surface properties of polymers, especially polyolefins. This modification allows for improved wettability and adhesion properties of polyolefin surfaces, especially for composites filled with natural fillers.…”

Section: Introductionmentioning

confidence: 99%

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Composite Material Based on Polypropylene and Modified Natural Fillers

Fayzullin,

Gorbachev,

Volfson

et al. 2024

Polymers

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The work presents the results of a comprehensive study on obtaining compositions based on polypropylene and natural fillers modified by enzymatic preparations under high-shear forces. The experiment protocol includes determining the modification time and the ratio of water volume to the mass of natural filler (hydro modulus) during modification, which turned out to be different for each type of filler. Physical and mechanical analyses were conducted to evaluate the operational characteristics of the obtained composites, with particular attention given to comparing the modified compositions with their unmodified counterparts. The time and hydro module of the enzymatic modification of the natural fillers under consideration were investigated, which turned out to be different for each type of filler. It was found that surface modification of natural fillers improves mechanical properties; namely, the tensile strength of composites with wood and sunflower fillers increases by 10%, and the impact viscosity of composites also increases by 12% with wood and sunflower fillers. Water absorption decreases in composites, after 2 h boiling, with wood flour by 30% and with rice husk by 10%. After a 14-day test at room temperature, water absorption decreases by more than 30% in composites with rice husk. When determining the free surface energy of composites, it was found that the modification of the filler reduces the polarity of the composites in all samples, which can be interpreted as an improvement in the interaction between the filler and the polymer matrix. The findings of this research have important implications for the development of advanced polymeric materials that can be used in a wide range of applications, including automotive, aerospace, and construction industries. The results underscore the importance of surface modifications to optimize the properties of polymeric composites and provide valuable insights into the role of natural fillers in enhancing the performance of these materials.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Composite Material Based on Polypropylene and Modified Natural Fillers

Fayzullin,

Gorbachev,

Volfson

et al. 2024

Polymers

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“…However, using smaller particles resulted in higher heat deflection temperature (HDT) values. Volfson et al [25] found that torrefied pine filler in a 50% wood-to-polypropylene ratio improved the tensile strength by 38% and reduced the elongation at the break by 12%.…”

Section: Introductionmentioning

confidence: 99%

Utilization of Torrefied and Non-Torrefied Short Rotation Willow in Wood–Plastic Composites

Pečnik,

Zouari,

Schwarzkopf

et al. 2023

Polymers

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The torrefaction process is widely used in the energy field, but the characteristics of the torrefied wood also have positive effects on the production of wood plastic composites. In this study, short-rotation shrub willow was torrefied at 225 and 300 °C and incorporated into polypropylene composites filled with changing levels of weight percent (wt%) of non-torrefied and torrefied (5, 15, 25, and 40 wt%) wood. Nine different formulations were extruded for mechanical, thermal, and water absorption properties. The tensile properties of composites were not affected by any level of torrefaction, while higher flexure properties were in favor of lower wt% of torrefied wood. The slowest rate of thermal degradation was confirmed for the highest wt% of torrefied wood with a torrefaction temperature of 300 °C. In contrast, the presence of torrefied wood in composites did not show a difference in crystallization or melting temperatures. The most noticeable contribution of torrefaction temperature and wt% was found for water-absorbing properties, where the higher torrefaction temperature and largest wt% of torrefied wood in the composite resulted in decreased water uptake.

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Section: Introductionunclassified

“…Существуют различные химические или физические методы модификации полимерных композитов с растительными наполнителями [6][7][8][9][10][11][12][13][14]. В работе [6] показано, что термо-и механо-химическая модификация древесной муки оказывает существенное влияние на свойства полимерных композитов. В работах [7][8][9] используют физические методы модификации, относящиеся к экспонированию полимерных композитов под действием излучений различной природы: радиоволн, ультрафиолета, потоков заряженных частиц.…”

Section: Introductionunclassified

Composite material based on polyolefins and modified vegetable fillers

et al. 2023

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The results of a study of mixing compositions based on polypropylene and vegetable fillers modified with an enzyme preparation are presented. During the experiment, the optimal modification time and the ratio of the volume of water to the mass of the vegetable filler during modification were determined. Physical and mechanical tests revealed that the composites with the modification were superior to the basic composites without the modification.

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The Physicomechanical and Rheological Characteristics of Wood–polymer Composites Based on Thermally and Mechanically Modified Filler

Abstract: The effect of different wood fillers on the physicomechanical and rheological properties of wood–polymer composites was studied. It was shown that thermal and mechanochemical modification of wood flour has a considerable effect on the properties of wood–polymer composites.

Cited by 7 publications

References 4 publications

Composite Material Based on Polypropylene and Modified Natural Fillers

Composite Material Based on Polypropylene and Modified Natural Fillers

Utilization of Torrefied and Non-Torrefied Short Rotation Willow in Wood–Plastic Composites

Composite material based on polyolefins and modified vegetable fillers

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