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Anjana, Rawat S, Goswami S. Development of a Biodegradable Ternary Blend of Poly(vinyl alcohol) and Polyhydroxybutyrate Functionalized with Triacetin for Agricultural Mulch Applications. ACS OMEGA 2024; 9:30169-30182. [PMID: 39035927 PMCID: PMC11256312 DOI: 10.1021/acsomega.3c10027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/15/2023] [Revised: 02/28/2024] [Accepted: 05/07/2024] [Indexed: 07/23/2024]
Abstract
The development of biodegradable mulch for agricultural applications represents a sustainable approach to reducing plastic pollution. Poly(vinyl alcohol) (PVA) is one of the nontoxic and biodegradable polymers that can be used as mulching film. However, a major drawback of PVA is its moisture sensitivity, which limits its applications. In this study, a biocomposite based on PVA and polyhydroxybutyrate (PHB), plasticized with triacetin, was developed by solvent casting method. The biocomposite film exhibited good mechanical properties, better integrity, reduced transmittance, and light-blocking properties, which can prevent weed growth. Additionally, an improvement in surface characteristics was observed, as demonstrated by the shift in contact angle from 44 to 99° and a reduction in the water vapor transmission rate (WVTR) from 4.82 to 2.31 g/h m2. For agronomic application, the developed films were experimentally applied as mulch for maize plants in pots. The results were positive, showing that the mulches effectively supported the growth of the maize plants. Further, signs of initial degradation were observed after 5 days, and the film reached a degradation level of 50-55% after 30 days under natural conditions. Thus, this work has provided new insights for expanding the application range of PVA films in biobased mulching materials.
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Affiliation(s)
- Anjana
- Division
of Chemical Engineering, Center of Innovative
and Applied Bioprocessing (CIAB), Knowledge City, Sector-81, Mohali, Punjab 140306, India
- Department
of Biotechnology, Regional Center for Biotechnology
(RCB), Faridabad, Haryana 121001, India
| | - Shristhi Rawat
- Department
of Bioscience & Bioengineering, Indian
Institute of Technology (IIT), Jodhpur 342011, India
| | - Saswata Goswami
- Division
of Chemical Engineering, Center of Innovative
and Applied Bioprocessing (CIAB), Knowledge City, Sector-81, Mohali, Punjab 140306, India
- Department
of Biotechnology, Regional Center for Biotechnology
(RCB), Faridabad, Haryana 121001, India
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2
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Jaffur BN, Kumar G, Jeetah P, Ramakrishna S, Bhatia SK. Current advances and emerging trends in sustainable polyhydroxyalkanoate modification from organic waste streams for material applications. Int J Biol Macromol 2023; 253:126781. [PMID: 37696371 DOI: 10.1016/j.ijbiomac.2023.126781] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2023] [Revised: 08/29/2023] [Accepted: 09/05/2023] [Indexed: 09/13/2023]
Abstract
The current processes for producing polyhydroxyalkanoates (PHAs) are costly, owing to the high cost of cultivation feedstocks, and the need to sterilise the growth medium, which is energy-intensive. PHA has been identified as a promising biomaterial with a wide range of potential applications and its functionalization from waste streams has made significant advances recently, which can help foster the growth of a circular economy and waste reduction. Recent developments and novel approaches in the functionalization of PHAs derived from various waste streams offer opportunities for addressing these issues. This study focuses on the development of sustainable, efficient, and cutting-edge methods, such as advanced bioprocess engineering, novel catalysts, and advances in materials science. Chemical techniques, such as epoxidation, oxidation, and esterification, have been employed for PHA functionalization, while enzymatic and microbial methods have indicated promise. PHB/polylactic acid blends with cellulose fibers showed improved tensile strength by 24.45-32.08 % and decreased water vapor and oxygen transmission rates while PHB/Polycaprolactone blends with a 1:1 ratio demonstrated an elongation at break four to six times higher than pure PHB, without altering tensile strength or elastic modulus. Moreover, PHB films blended with both polyethylene glycol and esterified sodium alginate showed improvements in crystallinity and decreased hydrophobicity.
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Affiliation(s)
- Bibi Nausheen Jaffur
- Department of Chemical and Environmental Engineering, Faculty of Engineering, University of Mauritius, Réduit 80837, Mauritius.
| | - Gopalakrishnan Kumar
- Institute of Chemistry, Bioscience and Environmental, Engineering, Faculty of Science and Technology, University of Stavanger, Stavanger, Norway; School of Civil and Environmental Engineering, Yonsei University, Seoul 03722, South Korea
| | - Pratima Jeetah
- Department of Chemical and Environmental Engineering, Faculty of Engineering, University of Mauritius, Réduit 80837, Mauritius
| | - Seeram Ramakrishna
- Department of Mechanical Engineering, College of Design and Engineering, National University of Singapore, 9 Engineering Drive 1, 117575, Singapore
| | - Shashi Kant Bhatia
- Department of Biological Engineering, Konkuk University, Seoul 05029, South Korea
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de Souza MF, Luna CBB, Siqueira DD, Bezerra EDOT, de Cerqueira GR, Araújo EM, Wellen RMR. Toward the Improvement of Maleic Anhydride Functionalization in Polyhydroxybutyrate (PHB): Effect of Styrene Monomer and Sn(Oct) 2 Catalyst. Int J Mol Sci 2023; 24:14409. [PMID: 37833855 PMCID: PMC10572386 DOI: 10.3390/ijms241914409] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2023] [Revised: 09/12/2023] [Accepted: 09/16/2023] [Indexed: 10/15/2023] Open
Abstract
In this work, polyhydroxybutyrate (PHB) was maleic anhydride (MA)-grafted in the molten state, using dicumyl peroxide (DCP) as a reaction initiator. Tin(II) 2-ethylhexanoate (Sn(Oct)2) and styrene monomer (St.) were used to maximize the maleic anhydride grafting degree. When PHB was modified with MA/DCP and MA/DCP/Sn(Oct)2, viscosity was reduced, suggesting chain scission in relation to pure PHB. However, when the styrene monomer was added, the viscosity increased due to multiple grafts of MA and styrene into the PHB chain. In addition, the FTIR showed the formation of a new band at 1780 cm-1 and 704 cm-1, suggesting a multiphase copolymer PHB-g-(St-co-MA). The PHB (MA/DCP) system showed a grafting degree of 0.23%; however, the value increased to 0.39% with incorporating Sn(Oct)2. The highest grafting efficiency was for the PHB (MA/DCP/St.) system with a value of 0.91%, while the PHB (MA/DCP/St./Sn(Oct)2) hybrid mixture was reduced to 0.73%. The chemical modification process of PHB with maleic anhydride increased the thermal stability by about 20 °C compared with pure PHB. The incorporation of 0.5 phr of the Sn(Oct)2 catalyst increased the efficiency of the grafting degree in the PHB. However, the St./Sn(Oct)2 hybrid mixture caused a deleterious effect on the maleic anhydride grafting degree.
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Affiliation(s)
- Matheus Ferreira de Souza
- Academic Unit of Materials Engineering, Federal University of Campina Grande, Av. Aprígio Veloso, 882-Bodocongó, Campina Grande 58429-900, PB, Brazil; (M.F.d.S.); (D.D.S.); (E.M.A.)
| | - Carlos Bruno Barreto Luna
- Academic Unit of Materials Engineering, Federal University of Campina Grande, Av. Aprígio Veloso, 882-Bodocongó, Campina Grande 58429-900, PB, Brazil; (M.F.d.S.); (D.D.S.); (E.M.A.)
| | - Danilo Diniz Siqueira
- Academic Unit of Materials Engineering, Federal University of Campina Grande, Av. Aprígio Veloso, 882-Bodocongó, Campina Grande 58429-900, PB, Brazil; (M.F.d.S.); (D.D.S.); (E.M.A.)
| | | | - Grazielle Rozendo de Cerqueira
- Department of Materials Science, Federal University of Pernambuco, Av. da Arquitetura-Cidade Universitária, Recife 50740-540, PE, Brazil;
| | - Edcleide Maria Araújo
- Academic Unit of Materials Engineering, Federal University of Campina Grande, Av. Aprígio Veloso, 882-Bodocongó, Campina Grande 58429-900, PB, Brazil; (M.F.d.S.); (D.D.S.); (E.M.A.)
| | - Renate Maria Ramos Wellen
- Department of Materials Engineering, Federal University of Paraíba, Cidade Universitária, João Pessoa 58051-900, PB, Brazil
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Kong M, Qin Z, Zhang P, Xie G, Wang H, Wang J, Guan F, Yang W, Qiu Z. Study on modified poplar wood powder/polylactic acid high toughness green 3D printing composites. Int J Biol Macromol 2023; 228:311-322. [PMID: 36581025 DOI: 10.1016/j.ijbiomac.2022.12.197] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2022] [Revised: 12/11/2022] [Accepted: 12/17/2022] [Indexed: 12/27/2022]
Abstract
In order to alleviate environmental pollution and the shortage of petroleum resources, improve the utilization of renewable materials, the research of biodegradable green composite materials has become a research hotspot. In this paper, Poplar Wood powder(PWP) and Polylactic acid(PLA) were selected, adding poly lactic acid graft maleic anhydride (MPLA) and Silane coupling agent KH-550 (KH550) as a compatibilizer and coupling agent to improve interface compatibility, at the same time, poly Butylenedioate-co-terephthalate (PBAT) and poly Butylene Succinate (PBS) were added to improve the toughness of the composites. The experimental results show that, the impact strength of 20 %-KMPP/PBAT/PBS composite modified by MPLA and KH550 was 20.70 kJ/m-2. Secondly, the hydrophobic angle of the composite material is as high as 112°. It is found that the high content of PWP with small particle size (200 mesh) can make it more evenly dispersed in the composite material, and the cross section of the composite material was smooth. The modified composite was 4.24$/kg, which reduced the cost by 28.07 %. The research results have opened up a new way to develop 3D printed biomass composites with low cost, high compatibility, high toughness and good environmental adaptability, and broadened the application scope and value of the composites.
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Affiliation(s)
- Mingru Kong
- Northeast Forestry University, Harbin 150040, China; Key Laboratory of Bio-based Material Science & Technology (Northeast Forestry University), Ministry of Education, Harbin 150040, China; Hongqi Hospital of Mudanjiang Medical College, Mudan River, 157011, China
| | - Zheng Qin
- Market Authority of Mudanjiang, Mudan River, 157011, China
| | - Ping Zhang
- Key Laboratory of Forest Sustainable Management and Environmental Microbial Engineering (Northeast Forestry University), Harbin 150040, China
| | - Guangqiang Xie
- Key Laboratory of Forest Sustainable Management and Environmental Microbial Engineering (Northeast Forestry University), Harbin 150040, China
| | - Hao Wang
- Key Laboratory of Forest Sustainable Management and Environmental Microbial Engineering (Northeast Forestry University), Harbin 150040, China
| | - Jun Wang
- Hongqi Hospital of Mudanjiang Medical College, Mudan River, 157011, China
| | - Fulong Guan
- Hongqi Hospital of Mudanjiang Medical College, Mudan River, 157011, China
| | - Weizhen Yang
- Hongqi Hospital of Mudanjiang Medical College, Mudan River, 157011, China
| | - Zhaowen Qiu
- Northeast Forestry University, Harbin 150040, China.
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Sinsukudomchai P, Aht-Ong D, Honda K, Napathorn SC. Green composites made of polyhydroxybutyrate and long-chain fatty acid esterified microcrystalline cellulose from pineapple leaf. PLoS One 2023; 18:e0282311. [PMID: 36867618 PMCID: PMC9983910 DOI: 10.1371/journal.pone.0282311] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2022] [Accepted: 02/14/2023] [Indexed: 03/04/2023] Open
Abstract
Pineapple leaf fibres are an abundant agricultural waste product that contains 26.9% cellulose. The objective of this study was to prepare fully degradable green biocomposites made of polyhydroxybutyrate (PHB) and microcrystalline cellulose from pineapple leaf fibres (PALF-MCC). To improve compatibility with PHB, the PALF-MCC was surface modified using lauroyl chloride as an esterifying agent. The influence of the esterified PALF-MCC laurate content and changes in the film surface morphology on biocomposite properties was studied. The thermal properties obtained by differential scanning calorimetry revealed a decrease in crystallinity for all biocomposites, with 100 wt% PHB displaying the highest values, whereas 100 wt% esterified PALF-MCC laurate showed no crystallinity. The addition of esterified PALF-MCC laurate increased the degradation temperature. The maximum tensile strength and elongation at break were exhibited when adding 5% of PALF-MCC. The results demonstrated that adding esterified PALF-MCC laurate as a filler in the biocomposite film could retain a pleasant value of tensile strength and elastic modulus whereas a slight increase in elongation can help to enhance flexibility. For soil burial testing, PHB/ esterified PALF-MCC laurate films with 5-20% (w/w) PALF-MCC laurate ester had higher degradation than films consisting of 100% PHB or 100% esterified PALF-MCC laurate. PHB and esterified PALF-MCC laurate derived from pineapple agricultural wastes are particularly suitable for the production of relatively low-cost biocomposite films that are 100% compostable in soil.
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Affiliation(s)
- Pitchanun Sinsukudomchai
- Department of Microbiology, Faculty of Science, Chulalongkorn University, Patumwan, Bangkok, Thailand
| | - Duangdao Aht-Ong
- Department of Materials Science, Faculty of Science, Chulalongkorn University, Patumwan, Bangkok, Thailand
- Center of Excellence on Petrochemical and Materials Technology, Chulalongkorn University, Bangkok, Thailand
| | - Kohsuke Honda
- International Center for Biotechnology, Osaka University, Suita, Osaka, Japan
| | - Suchada Chanprateep Napathorn
- Department of Microbiology, Faculty of Science, Chulalongkorn University, Patumwan, Bangkok, Thailand
- International Center for Biotechnology, Osaka University, Suita, Osaka, Japan
- * E-mail:
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Valente BFA, Silvestre AJD, Neto CP, Vilela C, Freire CSR. Improving the Processability and Performance of Micronized Fiber-Reinforced Green Composites through the Use of Biobased Additives. Polymers (Basel) 2022; 14:polym14173451. [PMID: 36080526 PMCID: PMC9459967 DOI: 10.3390/polym14173451] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2022] [Revised: 08/10/2022] [Accepted: 08/12/2022] [Indexed: 11/28/2022] Open
Abstract
Green composites made of bioplastics reinforced with natural fibers have gained considerable attention over recent years. However, the use of natural fibers in composites usually compromise some key properties, such as the impact strength and the processability of the final materials. In the present study, two distinct additives, namely an epoxidized linseed oil (ELO) and a sugar-based surfactant, viz. GlucoPure® Sense (GPS), were tested in composite formulations of poly(lactic acid) (PLA) or poly(hydroxybutyrate) (PHB) reinforced with micronized pulp fibers. Both additives showed a plasticizing effect, which led to a decrease in the Young’s and flexural moduli and strengths. At the same time, the elongation and flexural strain at break were considerably improved on some formulations. The melt flow rate was also remarkably improved with the incorporation of the additives. In the PHB-based composites, an increment of 230% was observed upon incorporation of 7.5 wt.% ELO and, in composites based on PLA, an increase of around 155% was achieved with the introduction of 2.5 wt.% GPS. ELO also increased the impact strength to a maximum of 29 kJ m−2, in formulations with PLA. For most composites, a faster degradation rate was observed on the formulations with the additives, reaching, in the case of PHB composites with GPS, a noteworthy weight loss over 75% under burial testing in compost medium at room temperature.
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Affiliation(s)
- Bruno F. A. Valente
- CICECO–Aveiro Institute of Materials, Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Armando J. D. Silvestre
- CICECO–Aveiro Institute of Materials, Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Carlos Pascoal Neto
- RAIZ, Research Institute of Forest and Paper (The Navigator Company), Rua José Estevão, Eixo, 3800-783 Aveiro, Portugal
| | - Carla Vilela
- CICECO–Aveiro Institute of Materials, Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Carmen S. R. Freire
- CICECO–Aveiro Institute of Materials, Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal
- Correspondence:
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Morphology and crystallization behaviour of polyhydroxyalkanoates-based blends and composites: A review. Biochem Eng J 2022. [DOI: 10.1016/j.bej.2022.108588] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Poly(lactic acid)/Poly(3-hydroxybutyrate) Biocomposites with Differently Treated Cellulose Fibers. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27082390. [PMID: 35458593 PMCID: PMC9032581 DOI: 10.3390/molecules27082390] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/07/2022] [Revised: 04/01/2022] [Accepted: 04/06/2022] [Indexed: 01/03/2023]
Abstract
The growing concern about environmental pollution has generated an increased demand for biobased and biodegradable materials intended particularly for the packaging sector. Thus, this study focuses on the effect of two different cellulosic reinforcements and plasticized poly(3-hydroxybutyrate) (PHB) on the properties of poly(lactic acid) (PLA). The cellulose fibers containing lignin (CFw) were isolated from wood waste by mechanical treatment, while the ones without lignin (CF) were obtained from pure cellulose by acid hydrolysis. The biocomposites were prepared by means of a melt compounding-masterbatch technique for the better dispersion of additives. The effect of the presence or absence of lignin and of the size of the cellulosic fibers on the properties of PLA and PLA/PHB was emphasized by using in situ X-ray diffraction, polarized optical microscopy, atomic force microscopy, and mechanical and thermal analyses. An improvement of the mechanical properties of PLA and PLA/PHB was achieved in the presence of CF fibers due to their smaller size, while CFw fibers promoted an increased thermal stability of PLA/PHB, owing to the presence of lignin. The overall thermal and mechanical results show the great potential of using cheap cellulose fibers from wood waste to obtain PLA/PHB-based materials for packaging applications as an alternative to using fossil based materials. In addition, in situ X-ray diffraction analysis over a large temperature range has proven to be a useful technique to better understand changes in the crystal structure of complex biomaterials.
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