Characterisation and Biodegradation of Poly(Lactic Acid) Blended with Oil Palm Biomass and Fertiliser for Bioplastic Fertiliser Composites

Saffian, Harmaen Ahmad; Abdan, Khalina; Hassan, Mohd Ali; Ibrahim, Nor Azowa; Jawaid, Mohammad

doi:10.15376/biores.11.1.2055-2070

Cited by 11 publications

(5 citation statements)

References 37 publications

(42 reference statements)

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“…This result resembles the evaluation carried out to evaluate the biodegradability of starch-based bioplastic by immersion in sterile water and the soil burial test for 10 days, where a weight loss of 29,89 % was recorded [66]. The resulting biodegradability was low compared to the biodegradability test carried out for 24 weeks for mixtures of biomass with polylactic acid, where weight losses of 64.3 % and 76.3 % were reported [67].…”

Section: Resultssupporting

confidence: 62%

Biofilms Production from Avocado Waste

Sánchez

Ponce

Brito

et al. 2021

IyU

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Objective: To obtain biofilms from starch and cellulose present in the avocado (Persea americana) peel and seed. Materials and methods: The starch characterization included humidity, gelatinization temperature, paste clarity, absorption index, solubility index, swelling power, amylose, amylopectin, amount, and starch yield. Five mixtures were made with 3 g of starch, 5 mL of 30 % NaOH (w/v), 3 g of cellulose, and different proportions for glycerin: 2 g; 2.5 g; 3 g; 3.5 g; 4 g, and PVA: 2 g, 3 g, 4 g, 5 g, and 6 g. Films were formed on acrylic plates, using the casting method. The bioplastic was characterized in terms of moisture, solubility in water, density, thickness, biodegradability, stress, deformation, and modulus of elasticity. Results and discusión: The addition of cellulose to the mixture does not contribute to film formation, unlike PVA which did. The film had the best physical appearance with a mixture of 2 g of glycerin and 6 g of PVA. The bioplastic characterization was 23.43 % humidity, 39.39 % for water solubility, 1.52 g/cm3 density, 0.58 mm thickness, 21.03 % weight loss for the biodegradability test, 1.53 MPa for tension, 21.25 % deformation, and 10,04 MPa for the modulus of elasticity. Conclusions: The bioplastic obtained did not show the resistance of traditional plastic. However, the results obtained serve as a starting point for the realization of other formulations, aimed at producing a bioplastic capable of competing with its synthetic relatives.

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Section: Resultssupporting

confidence: 62%

Biofilms Production from Avocado Waste

Sánchez

Ponce

Brito

et al. 2021

IyU

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“…Biodegradability was measured through the weight loss of the thermoplastic material, based on a soil burial test (Saffian et al, 2016). The natural soil was collected free of composting material.…”

Section: Bioplastic Propertiesmentioning

confidence: 99%

Development of a Bioplastic from Banana Peel

2022

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The problems caused by synthetic plastics have motivated the use of other materials. This research consisted of taking advantage of the banana peel and cellulose from the pseudostem of this plant to obtain a bioplastic. Dry milling was applied to extract the flour and an acid-alkaline treatment for the cellulose. The elaboration of the thermoplastic material did with a mixture design where fixed amounts of shell flour (5 g), 15% NaOH (5 mL), and water (4 mL), varying the concentrations of the plasticizers, which were glycerol and sorbitol. In two of the formulations, was added as filler 0,5 g of cellulose. The bioplastic obtained was characterized according to its thickness, water vapor permeability (WVP), tension force (TF), break time (bt), and biodegradability. The type of plasticizer and the cellulose content did not affect the thickness of the bioplastic, but it did affect the WVP, TF, and bt. WVP decreases when glycerin is used and increases with the addition of cellulose. The best result for WVP was 1,83 x 10-9 g/Pa.s.m in the formulation where only was used glycerol, while the best values for TF, bt, and biodegradability were 2,4 MPa, 17 seconds, and 37,77%, respectively, with 75% sorbitol and 25% glycerol. Expanding the study of the best formulations would allow their use as a replacement for synthetic plastics.

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Section: Introductionmentioning

confidence: 99%

“…These hydrogels have already demonstrated significant potential across a diverse spectrum of applications, encompassing scaffold design for tissue engineering, bioadhesive formulations, advanced drug delivery systems, agricultural innovations, and even as additives within the food industry. [18][19][20][21][22][23][24] Of particular note, chitosan and starch have emerged as pivotal constituents in the development of slow-release fertilizers, where precise nutritional control and effective regulation of soil moisture stand as paramount considerations. [22][23][24] In spite of their affordability, notable bioavailability, and commendable biodegradability, the research concerning gelatin hydrogels remains predominantly concentrated on their utilization within the realms of nutrition and biomedicine.…”

Section: Introductionmentioning

confidence: 99%

Synthesis And Ecotoxicological Evaluation of Gelatin‐Urea Delivery System for Biostimulation Purposes

de Carvalho,

Junior,

Filho

et al. 2024

Macromolecular Symposia

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In this study, the behavior of slow‐release urea capsules is investigated for bioremediation purposes. The urea capsules (u/PUA/HG) are produced by an emulsion system (O/W) containing a double coating of polyurea (internal) and gelatin hydrogel (external), using for both toluene‐2,4‐diisocyanate (TDI) as a reagent. The slow‐release system are characterized by Fourier transform‐infrared spectroscopy by ATR, optical microscopy, swelling index test (%), and urea release test (%). Eco‐toxicological studies are carried out to evaluate the toxicity of composites using germination (and root growth) of lettuce seeds. Also, preliminary study is conducted based on assessed of the Pseudomonas aeruginosa microbial behavior in the presence of composites. The characterization results indicate the effective coating of the urea granules. However, the FTIR analysis reveals an excess of unreacted TDI in the u/PUA/HG sample. Furthermore, there is an observed inhibition of both root growth and germination that corresponds to the quantity of the sample and TDI used. Notably, there is a notable 70% increase in microbial growth compared to the control group after 48 h. Upon concluding the urea release test spanning 144 h, a significant 43% reduction is observed for u/PUA/HG at 24°C. Additionally, there is a delay of 119 h in the total release time at 36°C, when compared to u/PUA. Collectively, the outcomes of this study strongly suggest the potential of u/PUA/HG as a bio‐stimulant, particularly in its effect on P. aeruginosa growth. These findings highlight its promising application as a bioremediator in the future.

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Characterisation and Biodegradation of Poly(Lactic Acid) Blended with Oil Palm Biomass and Fertiliser for Bioplastic Fertiliser Composites

Cited by 11 publications

References 37 publications

Biofilms Production from Avocado Waste

Biofilms Production from Avocado Waste

Development of a Bioplastic from Banana Peel

Synthesis And Ecotoxicological Evaluation of Gelatin‐Urea Delivery System for Biostimulation Purposes

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