Morphology of import additives used in obtaining oxobio-degradable polyolefins

Корчагин, В. И.; Протасов, А. В.; Мельнова, М. С.; Zhan, Sihui; Cherkasova, T. I.

doi:10.20914/2310-1202-2017-1-227-231

Cited by 5 publications

(1 citation statement)

References 4 publications

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“…Полиолефины, модифицированные прооксидантами, способны фрагментироваться под воздействием повышенных температур и ультрафиолетового облучения [15], а модифицированные полисахаридами, способны к биоэрозии под воздействием влаги и микроорганизмов [1]. Однако отсутствуют данные об особенностях деструкции композитов состава «полиолефин: полисахарид: прооксидант».…”

Section: Introductionunclassified

Evaluation of the degradation of the modified polyolefins in different environments

Студеникина

Kudina

Iushin

et al. 2020

Vestn. Voronež. gos. univ. inž. tehnol.

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Hybrid composites based on synthetic thermoplastics (STP) are a prospect for replacing traditional plastics in various sectors of the national economy: crop production (composite hydroponic substrates, containers, etc.), water treatment (composite biofilter loads), packaging industry, etc. The purpose of the work is to assess the destruction of composites based on STP, modified with prooxidants (PR) and polysaccharides (PS), in various external conditions that mimic environmental factors (thermal, photochemical (UV radiation), chemical, biochemical effects). As objects of research, we used prototypes based on a copolymer of ethylene with vinyl acetate and high-pressure polyethylene, modified with microcellulose and cobalt stearate. The time of exposure to external factors is 3 months. The work also assessed the degree of influence of the compounding technology (one-stage, two-stage) of the three-component system "STP: PR: PS" on the degree of destruction of the composite. It has been established that effective destruction of polyolefins modified by prooxidants is observed only under conditions of thermal and ultraviolet exposure. When the content of polysaccharides in the polyolefin matrix is 40 vol.% Or less, the composites are not significantly affected by chemical and biological environmental factors. Simultaneous modification of polyolefins with a prooxidant and a polysaccharide does not lead to a synergistic effect of destruction during the studied period of exposure. Under conditions of heat exposure and UV irradiation, the behavior of the three-component composite is similar to the behavior of the PO modified with the prooxidant, but with a less pronounced aging effect, and in aqueous media such materials behave as the PO polysaccharides modified, but also with less pronounced destruction. One-stage compounding of the three-component system "STP: PR: PS" significantly reduces the efficiency of composite destruction

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Section: Introductionunclassified

Evaluation of the degradation of the modified polyolefins in different environments

Студеникина

Kudina

Iushin

et al. 2020

Vestn. Voronež. gos. univ. inž. tehnol.

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Degradable properties of compositions based on polyethylene and plasticized polyvinyl alcohol

Dmitrieva¹,

Krymovska²,

Bortnytskyi³

et al. 2019

Polim. z.

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Polymer Composites Supported on Polyolefins and Dried Barley Grass

et al. 2022

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Benchmark results of physical, rheological and biodegradable properties of low (HDPE 273-83) and high (LDPE 15303-003) pressure polyethylene mixture by a factor of 1:1 supported on dried barley grass flour (200 microns maximum) ( 5–30 % by weight) enhanced by compatibilizer of 10 % (method functionalized with ultrathene alkaline alcohol exchange (ethylene-vinyl acetate copolymer 12206-007) and 1 % processing aid (polyethylene glycol (PEG-115 (4000)). It was concluded that the Young modulus and tensile strength do not decrease significantly with increase in vegetable reinforcement (up to 30 %). To compare the composite properties in terms of biodegradability, moisture uptake, chemical oxygen demand, and weight loss, a 12-month study was performed in laboratory soil. It is shown that an increase in the content of plant reinforcement increases the biodegradability of the composite. Resulting composites can be used in the production of various packaging materials.

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Morphology of import additives used in obtaining oxobio-degradable polyolefins

Cited by 5 publications

References 4 publications

Evaluation of the degradation of the modified polyolefins in different environments

Evaluation of the degradation of the modified polyolefins in different environments

Degradable properties of compositions based on polyethylene and plasticized polyvinyl alcohol

Polymer Composites Supported on Polyolefins and Dried Barley Grass

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