Synthesis and properties of bioplastics from corn starch and citric acid-epoxidized soybean oil oligomers

Yang, Jianlei; Dong, Xiaotong; Wang, Jiyi; Ching, Yern Chee; Liu, Jing; li, Chunhui; Baikeli, Yiliyasi; Li, Zhen; Al‐Hada, Naif Mohammed; Xu, Shicai

doi:10.1016/j.jmrt.2022.07.119

Cited by 28 publications

(30 citation statements)

References 33 publications

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“…1B). This could be attributed to the lower level of crosslinking could result in the inclusion of water molecules in the pectin based lm accompanied by acid promoted hydrolysis because of excessive carboxyl groups in pectin reducing the cohesiveness in the biopolymer chain as compared with starch [22]. Note, in case of TA based bioplastics (starch/TA and pectin/TA) after 24 h, both the swelling ratio (%) and the mass loss (%) couldn't be correctly evaluated due to higher water solubility of them.…”

Section: Resultsmentioning

confidence: 99%

Starch/Pectin as Emerging Renewable Materials for Fabrication of Sustainable Bioplastics for Food Packaging Applications

Arooj,

Khan

2023

Preprint

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Currently, due to serious environmental concerns of using non-biodegradable fossil fuel based plastics for food packaging application, the renewable bioplastic obtained from second generation biobased materials (biopolymers & plasticizers) could be an attractive alternative, but fulfilling the consumers demand is a challenging task. Here in this work, starch/pectin as matrix and chitosan co-biopolymers together with tartaric acid (TA)/citric acid (CA) as natural plasticizers were used to fabricate their bioplastics by condensation polymerization accompanied by intermolecular hydrogen bonding interactions. The FTIR analysis confirmed the successful formation of amide/ester bonds and non-covalent hydrogen bonding interactions, while the broad XRD bands indicated the amorphous nature of all the obtained bioplastics. Their swelling ratio ranged between (510–620 ± 50%) and the mass loss (44–76 ± 5%), which was susceptible to acid facilitated hydrolysis for 24 h incubation in water. The obtained tensile modulus was in the range (0.5 ± 0.1 to 7.5 ± 0.5 MPa), which was highest for starch/TA film (7.5 ± 0.5 MPa), attributed to the more plasticization effect in the CA based films. All the samples showed complete degradation (97 ± 2.5%), after 3 days dipping in soil and were ecofriendly by ecotoxicity assay. Therefore, these pure biobased bioplastics could be useful materials for the future food packing industry.

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Section: Resultsmentioning

confidence: 99%

Starch/Pectin as Emerging Renewable Materials for Fabrication of Sustainable Bioplastics for Food Packaging Applications

Arooj,

Khan

2023

Preprint

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“…The elongation improvement was due to the role of glycerol as a plasticizer that will occupy a place between the polymer chain so the distance between the polymer molecules will increase. This incident then later made interactions between polymer molecules [24]. Moreover, glycerol can also act as a lubricant of the polymer chains and thus allow fibers to slide one over the other, improving the flexibility of the film [22].…”

Section: The First Step Optimization: Glycerol Variationsmentioning

confidence: 99%

Optimization of mechanical properties of carrageenan-based bioplastic as food packaging

Genecya,

Adhika,

Widayani

et al. 2023

IOP Conf. Ser.: Earth Environ. Sci.

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Several types of plastic materials are widely used in food packaging because it has good mechanical and physical properties. However, the types of plastic used in food packaging, such as polyethylene (PE), polypropylene (PP), and polycarbonate (PC), are petroleum-based plastic that is not renewable, not biodegradable, and causes environmental pollution. One option to overcome this problem is to make bioplastic using renewable sources, one of which is carrageenan. Carrageenan is a polysaccharide used in bioplastic synthesis, but it has shortcomings in terms of mechanical properties. Thereby it needs additional supporting materials to improve its mechanical properties. This study aims to obtain optimal mechanical properties such as tensile strength, elongation, and modulus of elasticity. We optimized two variables in this study: glycerol concentration (1, 2, 3, 4, and 5%) and montmorillonite concentration (10, 20, and 30%). Optimization was carried out in two stages; the first stage was the optimization of glycerol concentrations, and the second stage was the optimization of montmorillonite concentrations. The optimum condition was obtained at 3% (v/v) glycerol and 20% (w/w) montmorillonite which gives a tensile strength value of 3.43 MPa, elongation of 47.01%, and Young Modulus of 7.31 MPa. Based on these optimization results, carrageenan-based bioplastic, especially on %EAB value, are comparable with other commercial plastic for food packaging.

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“…Pati singkong merupakan polimer alam, untuk keperluan plastisisasi dapat ditambahkan gliserol [5], meski sifat mekanik masih rendah dan hidrofilik [6]. Pati jagung dapat dijadikan sebagai bioplastik serta apabila ditambah dengan Oligomer minyak kedelai terepoksidasi asam sitrat (CESO) sifat bioplastik dapat meningkat [7]. Sifat biokompabilitas dan sifat meknais dapat ditingkatkan dengan menggunakan penguat dari serat alam, selulosa [8].…”

Section: Pendahuluanunclassified

Pengaruh Variasi Biokomposit (CaCO3: Tepung Jagung) Terhadap Nilai Penyusutan, Kekuatan Tarik, Kekuatan Tekuk, dan Mikrostruktur

Setiawan

Wahyuningsih²,

Yuliana³

2022

J. Teori Apl. Fis.

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Limestone can be used in the world of health, namely as a biomaterial for the manufacture of bone support plates. One of the artificial biomaterials used for bone support plates is biocomposite. Before applying biocomposites for bone support plates, it is necessary to know the right composition between bioplastics and bioceramics so that the bone support plates have good mechanical properties,, therefore several tests were carried out such as shrinkage, tensile tests, flexural tests, and scanning electron microscopy with energy dispersive X-ray spectroscopy to determine the microstructure and elements involved. contained in the biocomposite. In this study using 4 variations of the mass ratio of suspension CaCO3 : Corn Starch as biocomposite, suspension CaCO3 as matrix and Corn starch as bioplastic. The dimensions of the tensile test specimen are in accordance with the ASTM D638 type 4 standard, and the dimensions of the flexural test specimen are in accordance with the ASTM D790 standard. Samples are given codes such as specimen A code for composition of suspension CaCO3 20:80 corn starch (weight/weight)%, specimen B code for composition suspension CaCO3 30:70 corn starch (weight/weight)%, specimen C code for composition suspension CaCO3 40:60 cornstarch (weight/weight)%, and specimen code D for composition suspension CaCO3 50:50 corn starch (weight/weight) %. Based on the results of the shrinkage measurement, it showed that specimen B had the highest average shrinkage value of 18 ± 0,011 for the shrinkage tensile test specimen, and 16 ± 0.022 for the shrinkage flexural test specimen. The results of the tensile test and flexural test also showed that specimen B had the highest average tensile test value, namely the ultimate tensile strength of 0.11 ± 0.015 MPa and flexural strength of 0.02 ± 0.012 MPa. Meanwhile, from the microstructure characterization use scanning electron microscopy with energy dispersive X-ray spectroscopy, the results were in the form of a spheroidshaped specimen morphology and the dominant elements contained in the specimen microstructure were element C is 35.38% mass, element N is 11.74% mass, element O is 50.13%mass and element Ca is 2.74% mass in K atom shell.

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Synthesis and properties of bioplastics from corn starch and citric acid-epoxidized soybean oil oligomers

Cited by 28 publications

References 33 publications

Starch/Pectin as Emerging Renewable Materials for Fabrication of Sustainable Bioplastics for Food Packaging Applications

Starch/Pectin as Emerging Renewable Materials for Fabrication of Sustainable Bioplastics for Food Packaging Applications

Optimization of mechanical properties of carrageenan-based bioplastic as food packaging

Pengaruh Variasi Biokomposit (CaCO3: Tepung Jagung) Terhadap Nilai Penyusutan, Kekuatan Tarik, Kekuatan Tekuk, dan Mikrostruktur

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