Thermoplastic starch/beeswax blend: Characterization on thermal mechanical and moisture absorption properties

Diyana, Z. N.; Jumaidin, Ridhwan; Selamat, Mohd Zulkefli; Suan, Mohd Shahadan Mohd

doi:10.1016/j.ijbiomac.2021.08.201

Cited by 41 publications

(26 citation statements)

References 35 publications

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“…As evidenced by results published in the literature, the type of filler used as functional additive can enhance or reduce specific properties of TPS products. Similar tensile strength correlations were observed for TPS elements by Diyana et al [ 31 ], who analyzed manioc TPS with the addition of beeswax. However, in their tests, elongation at the break value was reduced.…”

Section: Resultssupporting

confidence: 84%

“…Our results are similar to those of Espinah et al [ 35 ], who also demonstrated that the use of TPS composites reinforced with alpha-grass fibers (at between 5 and 35%) facilitated an increase in the flexural strength of injection-molded forms. Moreover, the positive impact of functional additives on the durability of various TPS products has been reported by other authors [ 31 , 36 ]. Indeed, the addition of cotton, cogon grass, and seaweed fibers in TPS products improves their flexural strength and deformation capacity.…”

Section: Resultssupporting

confidence: 58%

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Selected Physical and Spectroscopic Properties of TPS Moldings Enriched with Durum Wheat Bran

et al. 2022

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The impact of the amount of durum wheat bran additive used on the selected structural, mechanical, and spectroscopic properties of thermoplastic starch moldings was examined in this study. Bran was added to corn starch from 10 to 60% by weight in the blends. Four temperature settings were used for the high-pressure injection: 120, 140, 160, and 180 °C. The highest value of elongation at break (8.53%) was observed for moldings containing 60% bran. Moreover, for these moldings, the tensile strength and flexural strength were lower (appropriately 3.43 MPa and 27.14 MPa). The highest deformation at break (1.56%) were obtained for samples with 60% bran and injection molded at 180 °C. We saw that higher bran content (50 and 60%) and a higher injection molding temperature (160 °C and 180 °C) significantly changed the color of the samples. The most significant changes in the FTIR spectra were observed at 3292 and 1644 cm−1 and in the region of 1460–1240 cm−1. Moreover, notable changes were observed in the intensity ratio of bands at 1015 and 955 cm−1. The changes observed correspond well with the amount of additive used and with the injection temperature applied; thus it may be considered as a marker of interactions affecting plasticization of the material obtained.

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Section: Resultssupporting

confidence: 84%

Section: Resultssupporting

confidence: 58%

Selected Physical and Spectroscopic Properties of TPS Moldings Enriched with Durum Wheat Bran

et al. 2022

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“…Zhou et al 16 studied sisal fiber-reinforced thermoplastic starch and found that the interfacial adhesion between the fibers and starch matrix was improved by the addition of glutaraldehyde and starch nanocrystals. Suan et al 17 added beeswax to starch to achieve improved mechanical properties, moisture barrier and water resistance. Bakar et.…”

Section: Class a Bio-based Polymersmentioning

confidence: 99%

Bio-based Polymers: A Mini Review

2022

Preprint

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Most synthetic polymers are derived from fossil fuel resources, whose scarcity and imbalanced global distribution can affect plastics producers. Bio-based polymers, obtained from renewable biomass resources, have received wide attention in the past two decades. Bioplastics formulated using bio-based polymers are a promising sustainable alternative to oil-based plastics, and may particularly benefit countries that are heavily dependent on foreign oil. This paper provides a brief overview of the three types of bio-based polymers, discusses the strengths and limitations of each type, highlights the latest research progresses, and evaluates recent trends in related scientific publications. The annual publication volumes of most bio-based polymers analyzed share the common pattern of steady growths, followed by stabilization or declines starting from the mid-2010s. The trends may be ascribed to changes in the prices of fossil fuel-based plastics, which in turn reflect the fluctuations in crude oil prices. Without strong financial support or technological breakthroughs, the manufacture of bioplastics is still too costly to compete against oil-based materials. Aside from economic challenges, bio-based polymers often face skepticism from the public, likely a result of misconceptions. This review also aims at clarifying some of the confusions and helping raise public awareness of bio-based polymers’ importance to sustainability.

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“…Beeswax is natural wax derive from bees which is widely used in food and cosmetic industry. Apart from that, beeswax portrays good properties such as ability to block moisture migration and improve product's shelf life and remain its main application as a product coating [6]. In our previous study, incorporation of beeswax has successfully improved the thermoplastic starch rigidity and reduce its moisture sensitivity [6].…”

Section: Introductionmentioning

confidence: 99%

“…Among bio-based plastic, starch is one of the most promising due to the abundant, low cost, renewable, and totally biodegradable in nature [4,5]. Starch can be converted into thermoplastic material with the presence of heat and shear; hence, it can be processed by using conventional plastic processing technique such as extruder and injection molding [6,7]. However, pure thermoplastic starch has limitation such as poor mechanical properties which limits the potential application of this bioplastic in the industry.…”

Section: Introductionmentioning

confidence: 99%

Thermal and Mechanical Properties of Thermoplastic Cassava Starch/Beeswax Reinforced with Cogon Grass Fiber

Jumaidin

Halim²,

Aziz³

et al. 2022

ARFMTS

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The aim of this paper is to investigate the effect of cogon grass fiber (CGF) on the thermal and mechanical properties of thermoplastic cassava starch (TPCS)/beeswax matrix. The alteration of TPCS/beeswax reinforced with cogon grass fiber was performed by incorporating various amount of CGF (0,10,20,30,40 wt.%) into the polymer matrix. The samples were then evaluated using thermogravimetric analysis and tensile test. The findings showed that the thermal properties of the composite were slightly improved as the CGF content increase. The mechanical test showed that the tensile strength and tensile modulus increased with the addition of the CGF. However, the elongation at break showed a decreased pattern following the increasing content of CGF compared to the 0% of fiber content. In general, the findings from this study have shown that the TPCS/beeswax reinforced with the CGF composite has improved the functional properties of the composites compared to the TPCS matrix.

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Thermoplastic starch/beeswax blend: Characterization on thermal mechanical and moisture absorption properties

Cited by 41 publications

References 35 publications

Selected Physical and Spectroscopic Properties of TPS Moldings Enriched with Durum Wheat Bran

Selected Physical and Spectroscopic Properties of TPS Moldings Enriched with Durum Wheat Bran

Bio-based Polymers: A Mini Review

Thermal and Mechanical Properties of Thermoplastic Cassava Starch/Beeswax Reinforced with Cogon Grass Fiber

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