Evaluations of the mechanical and physical properties of galangal root-poly(butylene-succinate) (PBS)-based biocomposite DOI

Naiyawat Sukthang,

Piyamart Jannok,

Weerakul Meaklangsang

et al.

Journal of Applied Research on Science and Technology (JARST), Journal Year: 2025, Volume and Issue: unknown

Published: April 4, 2025

Various agricultural waste materials, such as cassava stems, pineapple leaves, banana peels, and corn pulp, were developed into natural biodegradable packaging, adding value to the waste. Hence, this research aimed develop biocomposites inspect their mechanical physical properties. Fresh galangal root was washed dried at 80°C for 12 hours then ground achieve a particle size of 250 microns (GR250) 400 (GR400). Then, they mixed with PBS ratio PBS: GR250 80:20 wt.%. Later, mixtures passed through extruder, plastic strands obtained. these shredded small pellets called biocomposite pellets. These formed by heat 150°C 5 minutes under pressure 10 MPa obtain specimens. assessed properties (tensile strength, impact flexural strength). Also, (water absorption, density, morphology, percentage degradation) performed. The results could imply that GR400 PBS-based cause reductions in structural integrity elasticity. PBS/GR would assert less force. reflect PBS/GR250 PBS/GR400 had more ability resist bending stresses than neat PBS. tended degrade faster, supported microstructure observation lower density compared PBS/GR250. It be concluded added developing based-biocomposite. Galangal can produce food containers stresses. Biocomposite have property environmentally friendly aspects.

Language: Английский

Thermal, crystallization, and mechanical properties of polylactic acid (PLA)/poly(butylene succinate) (PBS) blends DOI
Tao Zhao,

Jinshuo Yu,

X.G. Zhang

et al.

Polymer Bulletin, Journal Year: 2023, Volume and Issue: 81(3), P. 2481 - 2504

Published: May 20, 2023

Language: Английский

Citations

19
Highly porous biobased membranes via electrospinning of PBS and CTAB DOI

Mahboubeh Ahmadi Bonakdar,

Ouassim Hamdi,

Yevgen Nazarenko

et al.

Polymer, Journal Year: 2023, Volume and Issue: 280, P. 126045 - 126045

Published: May 26, 2023

Language: Английский

Citations

17
Photooxidation‐induced conformational changes and degradation behaviors of poly(butylene succinate) and poly(butylene succinate‐co‐adipate) DOI
Adchara Padermshoke,

Yingjun An,

Tomoko Kajiwara

et al.

Journal of Polymer Science, Journal Year: 2024, Volume and Issue: 62(16), P. 3794 - 3807

Published: Feb. 24, 2024

Abstract Two biodegradable polyesters, poly(butylene succinate) (PBS) and succinate‐ co ‐adipate) (PBSA), were artificially aged in a UV irradiation test chamber, their photodegradation behaviors investigated. The attenuated total reflection (ATR) infrared (IR) spectra of the initial UV‐aged samples revealed conformational changes tetramethylene sequences photoaged PBS PBSA. one‐dimensional wide‐angle X‐ray scattering (WAXS) profiles showed that (110) d‐spacing α ‐form crystal progressively decreased during aging, suggesting crystalline polymer chains became arranged more closely along fiber axis. Accordingly, we conclude PBSA transform from TGTGT to nearly TTTTT conformations upon photoaging. observed WAXS, small‐angle scattering, IR spectral data suggest preferentially occurs amorphous phase each polymer. less crystallizable butylene adipate co‐unit enhances degradability PBSA, with prolonged photooxidation leading partial degradation region copolymer. This finding is consistent may be linked higher biodegradability compared PBS.

Language: Английский

Citations

8
Enzymatic Degradation Behavior of Self-Degradable Lipase-Embedded Aliphatic and Aromatic Polyesters and Their Blends DOI Creative Commons
Mario Iván Peñas, Ana Beloqui, Antxon Martı́nez de Ilarduya

et al.

Biomacromolecules, Journal Year: 2024, Volume and Issue: 25(7), P. 4030 - 4045

Published: June 10, 2024

Over the past decade, preparation of novel materials by enzyme-embedding into biopolyesters has been proposed as a straightforward method to produce self-degrading polymers. This paper reports and enzymatic degradation extruded self-degradable films three different biopolyesters: poly(lactic acid) (PLA), poly(butylene adipate-co-terephthalate) (PBAT), succinate) (PBS), well binary/ternary blends. Candida antarctica lipase B (CalB) employed for procedure, best our knowledge, use this approach in biopolyester blends not reported before. The homopolymers exhibited differentiated suggested preferential attack CalB on PBS over PBAT PLA. Moreover, obtained from showed slow degradation, probably due higher content PLA PBAT. These observations pave way exploring enzymes capable degrading all blend components or an mixture degradation.

Language: Английский

Citations

7
Relationship between Composition and Environmental Degradation of Poly(isosorbide-co-diol oxalate) (PISOX) Copolyesters DOI Creative Commons
Yue Wang,

Kevin van der Maas,

Daniel H. Weinland

et al.

Environmental Science & Technology, Journal Year: 2024, Volume and Issue: 58(5), P. 2293 - 2302

Published: Jan. 26, 2024

To reduce the global CO2 footprint of plastics, bio- and CO2-based feedstock are considered most important design features for plastics. Oxalic acid from isosorbide biomass interesting rigid building blocks high Tg polyesters. The biodegradability a family novel fully renewable (bio- CO2-based) poly(isosorbide-co-diol) oxalate (PISOX-diol) copolyesters was studied. We systematically investigated effects composition on biodegradation at ambient temperature in soil PISOX (co)polyesters. Results show that lag phase (co)polyester varies 0 to 7 weeks. All (co)polyesters undergo over 80% mineralization within 180 days (faster than cellulose reference) except one with cyclic codiol 1,4-cyclohexanedimethanol (CHDM). Their relatively fast degradability is independent type noncyclic results facile nonenzymatic hydrolysis ester bonds (especially bonds), which mostly hydrolyzed completely days. On other hand, partially replacing terephthalate units enhances polymer's resistance its soil. Our study demonstrates potential tuning copolyester structures biodegradable plastics improved thermal, mechanical, barrier properties.

Language: Английский

Citations

6
La(iii)-Catalysed degradation of polyesters to monomersviatransesterifications DOI

Ryota Abe,

Nobuyuki Komine, Kotohiro Nomura

et al.

Chemical Communications, Journal Year: 2022, Volume and Issue: 58(58), P. 8141 - 8144

Published: Jan. 1, 2022

Tris(acetylacetonato)lanthanum(III) (1 mol%) catalyses the degradation of poly(butylene succinate) (Mw = 90 700) by transesterification in MeOH at °C for 4 h, thus affording dimethyl succinate (>99% yield) and 1,4-butanediol (98% yield). Moreover, quantitative degradations poly(ethylene adipate), terephthalate) are also reported.

Language: Английский

Citations

21
Tunable enzymatic biodegradation of poly(butylene succinate): biobased coatings and self-degradable films DOI Creative Commons
Mario Iván Peñas, Miryam Criado‐Gonzalez, Antxon Martı́nez de Ilarduya

et al.

Polymer Degradation and Stability, Journal Year: 2023, Volume and Issue: 211, P. 110341 - 110341

Published: March 13, 2023

Biodegradation of polyesters driven by enzymes is considered as one the most effective way degradation these materials, a to control plastics accumulation in environment. In this study, we present two different strategies tune enzymatic PBS films triggered lipase from Pseudomonas cepacia. Firstly, kinetics was regulated applying multilayer coats polysaccharide alginate and chitosan (Alg/Chi) films. Secondly, self-degradable were prepared embedding lipase-filled particles. For comparison purposes, detailed study neat exposed P. cepacia solution made determine main experimental parameters influencing their solution. The results showed that an increase enzyme concentration increased extent rate At fixed concentration, stirring containing also biodegradation rate. case coated with number Alg/Chi layers spray-assisted LbL subjected experiments solution, found be dependent on protective coating layers. Therefore, biobased constitutes barrier diffusion lipase, thus proving its effectiveness modulating activity function thickness. lipase-embedded beads (employed protect during high-temperature processing), only limited observed amount encapsulated employed too small. Nonetheless, are promising, –indicative capacity enzyme– determined for all samples about 2 orders magnitude lower than previous assays.

Language: Английский

Citations

12
The Effect of Biochar Addition on Thermal Stability and Decomposition Mechanism of Poly(butylene succinate) Bionanocomposites DOI Creative Commons

Katerina Papadopoulou,

Evangelia Tarani, Nina Maria Ainali

et al.

Molecules, Journal Year: 2023, Volume and Issue: 28(14), P. 5330 - 5330

Published: July 11, 2023

In the present study, poly(butylene succinate) (PBSu) and its bionanocomposites containing 1, 2.5, 5 wt.% biochar (MSP700) were prepared via in situ melt polycondensation order to investigate thermal stability decomposition mechanism of materials. X-ray photoelectron spectroscopy (XPS) measurements carried out analyze surface area a sample PBSu/biochar nanocomposites. From XPS, it was found that only physical interactions taking place between PBSu matrix nanoadditive. Thermal stability, kinetics, pristine nanocomposites thoroughly studied by thermogravimetric analysis (TGA) pyrolysis-gas chromatography/mass spectrometry (Py-GC/MS). TGA thermograms depicted all materials had high since their started at around 300 °C. However, results indicated slight reduction because potential catalytic impact biochar. Py-GC/MS employed examine, more detail, degradation filled with products identified after pyrolysis 450 °C, pathway took mainly β-hydrogen bond scission, which is similar for neat PBSu. higher content (5 wt.%), some localized differences intensity peaks specific could be recognized, indicating α-hydrogen scission also place. A study crucial examine if new fulfill requirements further investigation mulch films agriculture or electronics as possible applications.

Language: Английский

Citations

12
Polymers Used in Transparent Face Masks—Characterization, Assessment, and Recommendations for Improvements Including Their Sustainability DOI Open Access

Kristine Miller,

Anke Jähn,

Brian M. Strohm

et al.

Polymers, Journal Year: 2025, Volume and Issue: 17(7), P. 937 - 937

Published: March 30, 2025

By 2050, 700 million people will have hearing loss, requiring rehabilitation services. For about 80% of deaf and hard-hearing individuals, face coverings hinders their ability to lip-read. Also, the normal population experiences issues socializing when wearing masks. Therefore, there is a need evaluate further develop transparent In this work, properties polymers used in ten commercial masks were determined. The chemical composition including nose bridges ear loops was determined by FTIR spectroscopy. focus characterizations on portion each mask. half masks, contained PET, while other it consisted PETG, PC, iPP, PVC, or SR (silicone rubber). Most had been coated with anti-fog material, few scratch-resistant compounds, as indicated XRF/EDX, SEM/EDX, contact angle measurements. Thermal, molecular weight, mechanical TGA/DSC, SEC, tensile tests, respectively. To measure optical properties, UV-Vis reflectance haze applied. An assessment recommendations better made, improvement sustainability.

Language: Английский

Citations

0
Development and Characterization of PBS/EA Cellulose and PCL/EA Cellulose Biocomposites: Structural, Morphological, and Thermal Insights for Sustainable Applications DOI Open Access

Fisokuhle Innocentia Kumalo,

M.A. Malimabe,

Mafereka Francis Tyson Mosoabisane

et al.

Polymers, Journal Year: 2025, Volume and Issue: 17(7), P. 971 - 971

Published: April 2, 2025

This study investigates the effect of Eucomis autumnalis (EA) cellulose on structural, thermal, and crystallization behaviour polybutylene succinate (PBS) polycaprolactone (PCL) composites. X-ray diffraction (XRD) results showed that in both matrices, EA promoted nucleation, as indicated by increased peak intensity, while differential scanning calorimetry (DSC) reduced melting enthalpy, suggesting formation smaller, less perfect crystals. In PBS composites, acted a disruptor, reducing crystallinity enthalpy. Moreover, it slightly lowered temperature. is because contains β-(1→4) glycosidic bonds, which introduce -O- (ether) linkages along its polymer backbone. These allow for degree rotational flexibility. When incorporated into PBS, this structural characteristic may contribute to reduction Tm, likely disrupting chains. At 1 wt.% cellulose, broader, more intense peaks imperfect crystal formation, higher loadings (3 5 wt.%) resulted narrower, peaks, reflecting crystallinity. are consistent with cooling-curve SEM images showing irregularities. PCL similarly enthalpy without significantly affecting or temperatures. The decrease from 55.6 J/g 47.6 suggested thinner lamellae organized crystals, conclusion supported stable temperatures declining intensities cooling curves. combination XRD DSC data highlighted dual role cellulose: enhances nucleation hindering growth, leading amorphous structures matrices. findings offer valuable insights potential use functional modifier tailor properties biopolymer composites environmentally friendly, biodegradable applications.

Language: Английский

Citations

0