Tensile Strength of PHBV/Natural Rubber Latex Mixtures

Promkotra, Sarunya; Kangsadan, Tawiwan

doi:10.1051/matecconf/20153501001

MATEC Web of Conferences

2015

DOI: 10.1051/matecconf/20153501001

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Tensile Strength of PHBV/Natural Rubber Latex Mixtures

Sarunya Promkotra

Tawiwan Kangsadan

Abstract: Abstract.A polyhydroxybutyrate-co-hydroxyvalerate (PHBV) is mingled with natural rubber latex (R) to develop its mechanical property of the blend. Normally, substantial effects of the PHBV are hard, fragile, and inelastic, whereas the natural rubber is represented itself as very high elastic matter. The mixtures between the PHBV and natural rubber latex (R) are considered in different proportions. The PHBV solutions (w/v) are defined suitability at 1% (P1), 2% (P2), and 3% (P3). Their liquid mixtures of the PH… Show more

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Cited by 4 publications

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“…Similar work was carried out in Thailand and the USA with PHBV (Poly (3-hydroxybutyrate-co-3hydroxyvalerate), as a result, the plasticity and hardness of this bioplastics were improved [19,20].…”

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confidence: 66%

On the Need to Develop Technologies for Producing Bioplastics in Kazakhstan

Uteulin¹,

Zhambakin²

2020

OF THE NATIONAL ACADEMY OF SCIENCES OF THE REPUBLIC OF KAZAKHS

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This article is published with a purpose to draw attention to the need to initiate in Kazakhstan the development of technologies for producing bioplastics from Kazakhstan’s own renewable plant resources. Every year, Kazakhstan generates hundreds of thousands of tons of plastic waste based on synthetic polymers traditionally produced from petrochemical raw material. Among them are bottles, packaging and bags. For example, in 2019 alone, plastic waste amounted to over 480 thousand tons. 15 companies, including two plastic processing plants, are not capable to cope with this amount of garbage. More than 18 million plastic bags are discarded in Kazakhstan every day, contaminating the environment. Since only about 9% of the plastic produced is recycled, the remaining part either contaminates the environment or is damped where the complete decomposition takes up to 500 years, releasing toxic substances into the soil in the mean time. The production of bioplastics and bioplastics-based products that will decompose in a short time (few months) will reduce the use of synthetic plastic products the decomposition of which is extremely slowly from 100 up to 500 years. Petroleum-based plastic is a real threat as a source of environmental pollution. Kazakhstan is taking measures to reduce environmental pollution. Starting in 2025 it is planned to introduce a complete ban on the realization of petroleum-based food packaging (bags). It is necessary to develop technologies for producing biodegradable polymers from renewable biological resources to replace petroleum-based plastic, reduce environmental pollution and increase global sustainability. There is a need for initiation of the research work on bioplastics in Kazakhstan.

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confidence: 66%

On the Need to Develop Technologies for Producing Bioplastics in Kazakhstan

Uteulin¹,

Zhambakin²

2020

OF THE NATIONAL ACADEMY OF SCIENCES OF THE REPUBLIC OF KAZAKHS

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“…NR is used in rubber industry and in production of a wide range of goods: shoes, clothes, catheters, surgical gloves, tires for planes and cars as well as other goods [1,2]. Kok-saghyz rubber has great prospects as an additive to bioplastics for the manufacture of biopackages with improved strength [3,4].…”

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confidence: 99%

TABLE OF CONTENTS AND LOCALIZATION OF RUBBER IN THE ROOTS OF KOK-SAGHYZ (Taraxacum kok-saghyz Rodin)

Uteulin¹,

Zhambakin²

2020

OF THE NATIONAL ACADEMY OF SCIENCES OF THE REPUBLIC OF KAZAKHS

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This article presents biological features, botanical description, and the results of the anatomical and physiological study of the Dandelion kok-saghyz (Taraxacum kok-saghyz Rodin), a valuable resource plant of world significance. Kok-saghyz is used as a technical culture, a source of high-quality rubber. Natural rubber is widely used in the rubber industry for the production of tires for automobiles, aircrafts, bicycles, as well as shoes, medical gloves and other products. The global rubber industry faces the real danger of the destruction of plantations of the main source of natural rubber - the rubber tree of hevea (Hevea brasiliensis), grown in the tropical humid climate of Southeast Asia, due to its diseases. This has happened in South America, which was originally a world center for the production of natural rubber; it has completely lost its position due to epiphytotics. There is currently a phytosanitary quarantine and a person who was accessed to hevea in South America should not visit the countries of Southeast Asia. Thus, there is a need for reserve additional plant species, the sources of natural rubber in the temperate zone, being adverse for acclimatization of hevea. Dandelion kok-saghyz is recognized as such a promising producer of natural rubber. According to data published, rubber of kok-saghyz sits in the latex vessels of the root, and the rubber content (6 to 14%) depends on the number of circles of the latex vessels (3 to 14). The number of circles of the latex vessels and, therefore, the rubber content in the roots depends on genotype, agricultural background and stage of kok-saghyz ontogenesis. The roots of kok-saghyz are known for high variability in the rubber content even in the same natural population of wild kok-saghyz from 0 to 47.87; 35.85 and 23.58% of the air-dry weight is due to several one-year covers in the root. Kok-saghyz is a highly polymorphic species that can be used in breeding programs. Individual selection provides for the high rubber content in the roots of kok-saghyz (10 to 14%). Currently, kok-saghyz is an important rubber plant with the following features: 1) high percentage of rubber; 2) flowering and fruiting in the first year of life; 3) high quality rubber. Kok-saghyz polymorphism provides for the selection of the most rubber-bearing and most precocious forms of this plant.

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Effects of organic additives on film characteristics of flexible PEDOT:PSS/latex

Silva

Boratto

Aguiar

et al. 2023

J Mater Sci: Mater Electron

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Tensile Strength of PHBV/Natural Rubber Latex Mixtures

Cited by 4 publications

References 8 publications

On the Need to Develop Technologies for Producing Bioplastics in Kazakhstan

On the Need to Develop Technologies for Producing Bioplastics in Kazakhstan

TABLE OF CONTENTS AND LOCALIZATION OF RUBBER IN THE ROOTS OF KOK-SAGHYZ (Taraxacum kok-saghyz Rodin)

Effects of organic additives on film characteristics of flexible PEDOT:PSS/latex

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