1
|
Wang Y, Cheng F, Liu J, Cai W, Ji J, Cai C, Fu Y. "Flexible-strong" polylactic acid porous membrane via tailored polymerization degree of lactic acid side-chains grafting for passive daytime radiative cooler. Int J Biol Macromol 2024; 267:131653. [PMID: 38631568 DOI: 10.1016/j.ijbiomac.2024.131653] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2024] [Revised: 04/04/2024] [Accepted: 04/14/2024] [Indexed: 04/19/2024]
Abstract
Aerogel possesses the advantages of high specific surface area, low density, and high porosity, which have shown great application in thermal regulation due to its efficient light scattering capability. However, traditional polymer-based aerogels have poor mechanical properties and lack ductility in outdoor applications, the cooling efficiency of the material is easily affected by damage during transportation, installation, and environmental factors. In this work, combining the porous nature of aerogels and the high ductility of membranes, a polylactic acid-based porous membrane cooler was developed by combining a regular honeycomb surface porous structure design and physical/chemical modification to enhance flexibility, using a simple non-solvent induced phase separation method. This porous membrane exhibits both super-flexibility (116 % elongation at break) and porous characteristics. It achieves a sub-ambient temperature decrease of 4-6 °C under direct sunlight. The optimized porous membrane demonstrates high solar reflectance (94 % of peak reflectivity, 90 % of average reflectivity) and strong infrared emissivity (96 % of peak emissivity, 91 % of average emissivity), it also maintains a solar peak reflectivity of 91 % under 100 % tensile strain and 1000 bending cycles, the cooler still maintains a cooling effect of 2-5 °C below ambient temperature. This work paves the way for developing mechanical flexible and strong radiative coolers for thermal regulation.
Collapse
Affiliation(s)
- Yibo Wang
- Co-Innovation Center of Efficient Processing and Utilization of Forest Resource, School of Materials Science and Engineering, Nanjing Forestry University, Nanjing, Jiangsu 210037, China
| | - Fulin Cheng
- Co-Innovation Center of Efficient Processing and Utilization of Forest Resource, School of Materials Science and Engineering, Nanjing Forestry University, Nanjing, Jiangsu 210037, China
| | - Jing Liu
- Co-Innovation Center of Efficient Processing and Utilization of Forest Resource, School of Materials Science and Engineering, Nanjing Forestry University, Nanjing, Jiangsu 210037, China
| | - Wanquan Cai
- Co-Innovation Center of Efficient Processing and Utilization of Forest Resource, School of Materials Science and Engineering, Nanjing Forestry University, Nanjing, Jiangsu 210037, China
| | - Jiawen Ji
- Co-Innovation Center of Efficient Processing and Utilization of Forest Resource, School of Materials Science and Engineering, Nanjing Forestry University, Nanjing, Jiangsu 210037, China
| | - Chenyang Cai
- Co-Innovation Center of Efficient Processing and Utilization of Forest Resource, School of Materials Science and Engineering, Nanjing Forestry University, Nanjing, Jiangsu 210037, China.
| | - Yu Fu
- Co-Innovation Center of Efficient Processing and Utilization of Forest Resource, School of Materials Science and Engineering, Nanjing Forestry University, Nanjing, Jiangsu 210037, China.
| |
Collapse
|
2
|
Liu S, He S, Chen C, Li C, Luo W, Zheng K, Wang J, Li Z, He H, Chen Q, Li Y. A Versatile Disorder-to-Order Technology to Upgrade Polymers into High-Performance Bioinspired Materials. Adv Healthc Mater 2023; 12:e2300068. [PMID: 37269485 DOI: 10.1002/adhm.202300068] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2023] [Revised: 05/29/2023] [Indexed: 06/05/2023]
Abstract
Biodegradable polymer as traditional material has been widely used in the medical and tissue engineering fields, but there is a great limitation as to its inferior mechanical performance for repairing load-bearing tissues. Thus, it is highly desirable to develop a novel technology to fabricate high-performance biodegradable polymers. Herein, inspired by the bone's superstructure, a versatile disorder-to-order technology (VDOT) is proposed to manufacture a high-strength and high-elastic modulus stereo-composite self-reinforced polymer fiber. The mean tensile strength (336.1 MPa) and elastic modulus (4.1 GPa) of the self-reinforced polylactic acid (PLA) fiber are 5.2 and 2.1 times their counterparts of the traditional PLA fiber prepared by the existing spinning method. Moreover, the polymer fibers have the best ability of strength retention during degradation. Interestingly, the fiber tensile strength is even higher than those of bone (200 MPa) and some medical metals (e.g., Al and Mg). Based on all-polymeric raw materials, the VDOT endows bioinspired polymers with improved strength, elastic modulus, and degradation-controlled mechanical maintenance, making it a versatile update technology for the massive industrial production of high-performance biomedical polymers.
Collapse
Affiliation(s)
- Shengyang Liu
- Engineering Research Centre for Biomedical Materials of Ministry of Education, The Key Laboratory for Ultrafine Materials of Ministry of Education, School of Material Science & Engineering, Frontiers Science Center for Materiobiology and Dynamic Chemistry, East China University of Science & Technology, Shanghai, 200237, P. R. China
| | - Shicheng He
- Biomechanics Laboratory, School of Biological Science & Medical Engineering, Southeast University, Nanjing, 210096, P. R. China
| | - Can Chen
- Engineering Research Centre for Biomedical Materials of Ministry of Education, The Key Laboratory for Ultrafine Materials of Ministry of Education, School of Material Science & Engineering, Frontiers Science Center for Materiobiology and Dynamic Chemistry, East China University of Science & Technology, Shanghai, 200237, P. R. China
| | - Chunwang Li
- Engineering Research Centre for Biomedical Materials of Ministry of Education, The Key Laboratory for Ultrafine Materials of Ministry of Education, School of Material Science & Engineering, Frontiers Science Center for Materiobiology and Dynamic Chemistry, East China University of Science & Technology, Shanghai, 200237, P. R. China
| | - Wei Luo
- Wenzhou Institute of Shanghai University, Wenzhou, 325000, P. R. China
| | - Kaikai Zheng
- Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials Key Laboratory for the Green Preparation and Application of Functional Materials of Ministry of Education, College of Chemistry and Chemical Engineering, Hubei University, Wuhan, 430062, P. R. China
| | - Jing Wang
- Engineering Research Centre for Biomedical Materials of Ministry of Education, The Key Laboratory for Ultrafine Materials of Ministry of Education, School of Material Science & Engineering, Frontiers Science Center for Materiobiology and Dynamic Chemistry, East China University of Science & Technology, Shanghai, 200237, P. R. China
| | - Zhiyong Li
- Biomechanics Laboratory, School of Biological Science & Medical Engineering, Southeast University, Nanjing, 210096, P. R. China
| | - Hongyan He
- Engineering Research Centre for Biomedical Materials of Ministry of Education, The Key Laboratory for Ultrafine Materials of Ministry of Education, School of Material Science & Engineering, Frontiers Science Center for Materiobiology and Dynamic Chemistry, East China University of Science & Technology, Shanghai, 200237, P. R. China
| | - Qiang Chen
- Biomechanics Laboratory, School of Biological Science & Medical Engineering, Southeast University, Nanjing, 210096, P. R. China
| | - Yulin Li
- Engineering Research Centre for Biomedical Materials of Ministry of Education, The Key Laboratory for Ultrafine Materials of Ministry of Education, School of Material Science & Engineering, Frontiers Science Center for Materiobiology and Dynamic Chemistry, East China University of Science & Technology, Shanghai, 200237, P. R. China
| |
Collapse
|
3
|
Kumar R, Sadeghi K, Jang J, Seo J. Mechanical, chemical, and bio-recycling of biodegradable plastics: A review. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 882:163446. [PMID: 37075991 DOI: 10.1016/j.scitotenv.2023.163446] [Citation(s) in RCA: 21] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/14/2023] [Revised: 04/07/2023] [Accepted: 04/07/2023] [Indexed: 05/03/2023]
Abstract
The extensive use of petroleum-based non-biodegradable plastics for various applications has led to global concerns regarding the severe environmental issues associated with them. However, biodegradable plastics are emerging as green alternatives to petroleum-based non-biodegradable plastics. Biodegradable plastics, which include bio-based and petroleum-based biodegradable polymers, exhibit advantageous properties such as renewability, biocompatibility, and non-toxicity. Furthermore, certain biodegradable plastics are compatible with existing recycling streams intended for conventional plastics and are biodegradable in controlled and/or predicted environments. Recycling biodegradable plastics before their end-of-life (EOL) degradation further enhances their sustainability and reduces their carbon footprint. Since the production of biodegradable plastic is increasing and these materials will coexist with conventional plastics for many years to come, it is essential to identify the optimal recycling options for each of the most prevalent biodegradable plastics. The substitution of virgin biodegradable plastics by their recyclates leads to higher savings in the primary energy demand and reduces global warming impact. This review covers the current state of the mechanical, chemical, and bio-recycling of post-industrial and post-consumer waste of biodegradable plastics and their related composites. The effects of recycling on the chemical structure and thermomechanical properties of biodegradable plastics are also reported. Additionally, the improvement of biodegradable plastics by blending them with other polymers and nanoparticles is comprehensively discussed. Finally, the status of bioplastic usage, life cycle assessment, EOL management, bioplastic market, and the challenges associated with the recyclability of biodegradable plastics are addressed. This review gives comprehensive insights into the recycling processes that may be employed for the recycling of biodegradable plastics.
Collapse
Affiliation(s)
- Ritesh Kumar
- Department of Packaging, Yonsei University, 1 Yonseidae-gil, Wonju-si, Gangwon-do 26493, South Korea
| | - Kambiz Sadeghi
- Department of Packaging, Yonsei University, 1 Yonseidae-gil, Wonju-si, Gangwon-do 26493, South Korea
| | - Jaeyoung Jang
- Department of Packaging, Yonsei University, 1 Yonseidae-gil, Wonju-si, Gangwon-do 26493, South Korea
| | - Jongchul Seo
- Department of Packaging, Yonsei University, 1 Yonseidae-gil, Wonju-si, Gangwon-do 26493, South Korea.
| |
Collapse
|
4
|
Zhang X, Ji G, Gao M, Huang J, Li T, Wang Y, Wang S, Dong W. Designing Strong, Tough, Fluorescent, and UV-Shielding PLA Materials by Incorporating a Phenolic Compound-Based Multifunctional Modifier. ACS APPLIED MATERIALS & INTERFACES 2023; 15:17268-17278. [PMID: 36961886 DOI: 10.1021/acsami.3c01293] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
The realization of high stiffness, high extensibility, and multi-functions for polylactic acid (PLA) is a vital issue for its practical applications. Herein, hydroxyalkylated tannin acid (mTA), a phenolic compound-based modifier with plentiful flat aromatic structures and flexible isopropanol oligomers, is designed and fabricated to act as the multifunctional modifier for PLA. The mTA exhibits the capability of emitting fluorescence and blocking UV light due to the combination of flat aromatic structures and plentiful flexible chains. Besides, mTA with high grafting degree (h-mTA) shows an excellent compatibility to PLA due to the hydrogen bonding interface and the high affinity of grafted isopropanol oligomers to PLA. As a result, the as-prepared PLA/h-mTA20 composite exhibits a strikingly improved extensibility by 61.2 times while maintaining the high yield strength of PLA. Moreover, PLA/h-mTA can serve as a fluorescent material with multi-mode responsiveness as well as a UV-shielding material with high transparency. We envision that this work opens a novel yet facile way to prepare a strong, tough, and multifunctional PLA material with expanded application scopes and will promote the practical applications of phenolic compounds in polymers.
Collapse
Affiliation(s)
- Xuhui Zhang
- The Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, 1800 Lihu Road, Wuxi 214122, China
| | - Guangyao Ji
- The Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, 1800 Lihu Road, Wuxi 214122, China
| | - Mengying Gao
- The Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, 1800 Lihu Road, Wuxi 214122, China
| | - Jing Huang
- The Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, 1800 Lihu Road, Wuxi 214122, China
| | - Ting Li
- The Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, 1800 Lihu Road, Wuxi 214122, China
| | - Yang Wang
- The Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, 1800 Lihu Road, Wuxi 214122, China
| | - Shibo Wang
- The Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, 1800 Lihu Road, Wuxi 214122, China
| | - Weifu Dong
- The Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, 1800 Lihu Road, Wuxi 214122, China
| |
Collapse
|
5
|
Kinyanjui Muiruri J, Chee Chuan Yeo J, Yun Debbie Soo X, Wang S, Liu H, Kong J, Cao J, Hoon Tan B, Suwardi A, Li Z, Xu J, Jun Loh X, Zhu Q. Recent Advances of Sustainable Short-chain length Polyhydroxyalkanoates (Scl-PHAs) – Plant Biomass Composites. Eur Polym J 2023. [DOI: 10.1016/j.eurpolymj.2023.111882] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/09/2023]
|
6
|
Zhao L, Pan J, Ding Y, Cai S, Cai T, Chen L, Ji XM. Coupling continuous poly(3-hydroxybutyrate) synthesis with piperazine-contained wastewater treatment: Fermentation performance and microbial contamination deciphering. Int J Biol Macromol 2023; 226:1523-1532. [PMID: 36455823 DOI: 10.1016/j.ijbiomac.2022.11.264] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2022] [Revised: 11/21/2022] [Accepted: 11/24/2022] [Indexed: 11/30/2022]
Abstract
Open poly(3-hydroxybutyrate) (PHB) fermentation is of great potential, and batch PHB synthesis with piperazine as the nitrogen switch has been realized. However, it is vital to explore the feasibility of continuous PHB fermentation with piperazine-contained wastewater remediation collaboratively. Here, an aerobic membrane bioreactor was constructed for consecutive PHB synthesis. The removal efficiency of piperazine decreased from 100 % to 82.6 % after three cycles, meanwhile, the PHB concentration was 0.39 g·L-1, 0.18 g·L-1, and undetected for each cycle. Microbial community analysis showed that Proteobacteria, Actinobacteriota, and Bacteroidota were the main contaminating microbes. Furthermore, three metagenome-assembled genomes related to Flavobacterium collumnare, Herbaspirillum aquaticum, and Microbacterium enclense were identified as the dominant contaminating strains. These microbes obtained nitrogenous substrates transformed by Paracoccus sp. TOH, such as amino acids and dissolved organic matter, as nutrient for accumulation. This study verified the practicability of coupling continuous PHB synthesis with industrial wastewater treatment and revealed the derivation mechanism of contaminating species, which could provide a reference for the targeted nitrogen release gene knockout of functional PHB fermentation chassis.
Collapse
Affiliation(s)
- Leizhen Zhao
- College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, 210095, China
| | - Jiachen Pan
- College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, 210095, China
| | - Yi Ding
- College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, 210095, China
| | - Shu Cai
- Department of Biological and Agricultural Engineering, University of California, Davis, CA 95616, United States
| | - Tianming Cai
- College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, 210095, China
| | - Liwei Chen
- College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, 210095, China.
| | - Xiao-Ming Ji
- College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, 210095, China.
| |
Collapse
|
7
|
Huang W, Shi Y, Wang W, Sheng Y, Guo Y, Li Y, Yang Q, Chen P. Polylactide/poly[(
R
)‐3‐hydroxybutyrate] (
PHB
) blend fibers with superior heat‐resistance: Effect of
PHB
on crystallization. POLYM ADVAN TECHNOL 2023. [DOI: 10.1002/pat.5982] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Wei Huang
- Zhejiang Key Laboratory of Bio‐based Polymeric Materials Technology and Application, Ningbo Key Laboratory of Polymer Materials, Ningbo Institute of Materials Technology and Engineering (NIMTE), CAS Ningbo China
| | - Yamin Shi
- Zhejiang Key Laboratory of Bio‐based Polymeric Materials Technology and Application, Ningbo Key Laboratory of Polymer Materials, Ningbo Institute of Materials Technology and Engineering (NIMTE), CAS Ningbo China
| | - Wenling Wang
- COFCO (Jilin) Bio‐Chemical Technology Co., Ltd Changchun China
| | - Yongji Sheng
- COFCO (Jilin) Bio‐Chemical Technology Co., Ltd Changchun China
| | - Yuying Guo
- COFCO (Jilin) Bio‐Chemical Technology Co., Ltd Changchun China
| | - Yi Li
- COFCO (Jilin) Bio‐Chemical Technology Co., Ltd Changchun China
| | - Qiu Yang
- Ningbo New Material Testing and Evaluation Center Co., Ltd Ningbo China
| | - Peng Chen
- Zhejiang Key Laboratory of Bio‐based Polymeric Materials Technology and Application, Ningbo Key Laboratory of Polymer Materials, Ningbo Institute of Materials Technology and Engineering (NIMTE), CAS Ningbo China
- Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of Sciences Beijing China
| |
Collapse
|
8
|
Gu Z, Zhang J, Cao W, Liu X, Wang J, Zhang X, Chen W, Bao J. Extraordinary toughness and heat resistance enhancement of biodegradable PLA/PBS blends through the formation of a small amount of interface-localized stereocomplex crystallites during melt blending. POLYMER 2022. [DOI: 10.1016/j.polymer.2022.125454] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
|
9
|
Characterization of Optimized Ternary PLA/PHB/Organoclay Composites Processed through Fused Filament Fabrication and Injection Molding. MATERIALS 2022; 15:ma15093398. [PMID: 35591733 PMCID: PMC9104074 DOI: 10.3390/ma15093398] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/04/2022] [Revised: 05/02/2022] [Accepted: 05/04/2022] [Indexed: 11/16/2022]
Abstract
The aim of this study was to investigate the structure-properties relationship of ternary blends of polylactide/polyhydroxybutyrate (PLA/PHB)/organo-modified layered silicate (OMLS). Morphological, thermal, rheological, and mechanical characterizations were performed to understand the influence of OMLS on PLA/PHB (70/30 wt%) formulations optimized through modifications with an epoxy-based chain extender, the use of a plasticizer, as well as the influence of the type of processing route: injection molding or fused filament fabrication. The addition of OMLS allowed the blend compatibility to be improved, with the appearance of a single melting peak on DSC thermograms at 146 °C, as well as the reduction in the size of the nodules for the injected molded specimens. Concerning the printed samples, AFM analysis revealed a coalescence of the PHB minor phase due to its degradation. This phenomenon was dramatically enhanced in the presence of OMLS and has been ascribed to the degradation of both the organo-modifier and the PHB minor phase in the blend. Rheological and mechanical tests (17% decrease in Young's modulus and 13% decrease in elongation at break) confirmed this degradation that would have occurred during the manufacturing of the filaments and the printing of specimens due to additional thermal and cooling steps.
Collapse
|
10
|
A Review on Biological Synthesis of the Biodegradable Polymers Polyhydroxyalkanoates and the Development of Multiple Applications. Catalysts 2022. [DOI: 10.3390/catal12030319] [Citation(s) in RCA: 47] [Impact Index Per Article: 23.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Polyhydroxyalkanoates, or PHAs, belong to a class of biopolyesters where the biodegradable PHA polymer is accumulated by microorganisms as intracellular granules known as carbonosomes. Microorganisms can accumulate PHA using a wide variety of substrates under specific inorganic nutrient limiting conditions, with many of the carbon-containing substrates coming from waste or low-value sources. PHAs are universally thermoplastic, with PHB and PHB copolymers having similar characteristics to conventional fossil-based polymers such as polypropylene. PHA properties are dependent on the composition of its monomers, meaning PHAs can have a diverse range of properties and, thus, functionalities within this biopolyester family. This diversity in functionality results in a wide array of applications in sectors such as food-packaging and biomedical industries. In order for PHAs to compete with the conventional plastic industry in terms of applications and economics, the scale of PHA production needs to grow from its current low base. Similar to all new polymers, PHAs need continuous technological developments in their production and material science developments to grow their market opportunities. The setup of end-of-life management (biodegradability, recyclability) system infrastructure is also critical to ensure that PHA and other biobased biodegradable polymers can be marketed with maximum benefits to society. The biobased nature and the biodegradability of PHAs mean they can be a key polymer in the materials sector of the future. The worldwide scale of plastic waste pollution demands a reformation of the current polymer industry, or humankind will face the consequences of having plastic in every step of the food chain and beyond. This review will discuss the aforementioned points in more detail, hoping to provide information that sheds light on how PHAs can be polymers of the future.
Collapse
|
11
|
Seyed Khabbaz H, Garmabi H. Modification of polylactide by reactive blending with polyhydroxybutyrate oligomers formed by thermal recycling through E1cB-elimination pathway. Eur Polym J 2022. [DOI: 10.1016/j.eurpolymj.2022.111043] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
|
12
|
In situ grafting approach for preparing PLA/PHBV degradable blends with improved mechanical properties. Polym Bull (Berl) 2021. [DOI: 10.1007/s00289-021-03958-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
|
13
|
Gioia C, Giacobazzi G, Vannini M, Totaro G, Sisti L, Colonna M, Marchese P, Celli A. End of Life of Biodegradable Plastics: Composting versus Re/Upcycling. CHEMSUSCHEM 2021; 14:4167-4175. [PMID: 34363734 PMCID: PMC8518687 DOI: 10.1002/cssc.202101226] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/14/2021] [Revised: 08/04/2021] [Indexed: 05/16/2023]
Abstract
Nowadays the issues related to the end of life of traditional plastics are very urgent due to the important pollution problems that plastics have caused. Biodegradable plastics can help to try to mitigate these problems, but even bioplastics need much attention to carefully evaluate the different options for plastic waste disposal. In this Minireview, three different end-of-life scenarios (composting, recycling, and upcycling) were evaluated in terms of literature review. As a result, the ability of bioplastics to be biodegraded by composting has been related to physical variables and materials characteristics. Hence, it is possible to deduce that the process is mature enough to be a good way to minimize bioplastic waste and valorize it for the production of a fertilizer. Recycling and upcycling options, which could open up many interesting new scenarios for the production of high-value materials, are less studied. Research in this area can be strongly encouraged.
Collapse
Affiliation(s)
- Claudio Gioia
- Department of Civil, Chemical, Environmental and Materials EngineeringUniversity of BolognaVia Terracini 2840131BolognaItaly
| | - Greta Giacobazzi
- Department of Civil, Chemical, Environmental and Materials EngineeringUniversity of BolognaVia Terracini 2840131BolognaItaly
| | - Micaela Vannini
- Department of Civil, Chemical, Environmental and Materials EngineeringUniversity of BolognaVia Terracini 2840131BolognaItaly
| | - Grazia Totaro
- Department of Civil, Chemical, Environmental and Materials EngineeringUniversity of BolognaVia Terracini 2840131BolognaItaly
| | - Laura Sisti
- Department of Civil, Chemical, Environmental and Materials EngineeringUniversity of BolognaVia Terracini 2840131BolognaItaly
| | - Martino Colonna
- Department of Civil, Chemical, Environmental and Materials EngineeringUniversity of BolognaVia Terracini 2840131BolognaItaly
| | - Paola Marchese
- Department of Civil, Chemical, Environmental and Materials EngineeringUniversity of BolognaVia Terracini 2840131BolognaItaly
| | - Annamaria Celli
- Department of Civil, Chemical, Environmental and Materials EngineeringUniversity of BolognaVia Terracini 2840131BolognaItaly
| |
Collapse
|
14
|
Fabrication of recyclable nucleating agent and its effect on crystallization, gas barrier, thermal, and mechanical performance of Poly( -lactide). POLYMER 2021. [DOI: 10.1016/j.polymer.2021.124121] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
|
15
|
Wang H, Chen X, Ding Y, Huang D, Ma Y, Pan L, Zhang K, Wang H. Combining novel polyether-based ionomers and polyethylene glycol as effective toughening agents for polylactide. POLYMER 2021. [DOI: 10.1016/j.polymer.2021.123964] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
|
16
|
Transesterification catalyzed via ferric chloride for fabricating Poly(lactic acid)/Poly(butylene adipate-co-terephthalate) blends with ultra-fast degradation and high toughness. POLYMER 2021. [DOI: 10.1016/j.polymer.2021.123927] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
|
17
|
Lv T, Li J, Huang S, Wen H, Li H, Chen J, Jiang S. Synergistic effects of chain dynamics and enantiomeric interaction on the crystallization in PDLA/PLLA mixtures. POLYMER 2021. [DOI: 10.1016/j.polymer.2021.123648] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
18
|
Yang DD, Wu C, Wu G, Chen SC, Wang YZ. Toughening of Polylactide with High Tensile Strength via Constructing an Integrative Physical Crosslinking Network Based on Ionic Interactions. Macromolecules 2020. [DOI: 10.1021/acs.macromol.0c02181] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Dan-Dan Yang
- The Collaborative Innovation Center for Eco-Friendly and Fire-Safety Polymeric Materials (MoE), National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), State Key Laboratory of Polymer Materials Engineering, College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Cong Wu
- The Collaborative Innovation Center for Eco-Friendly and Fire-Safety Polymeric Materials (MoE), National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), State Key Laboratory of Polymer Materials Engineering, College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Gang Wu
- The Collaborative Innovation Center for Eco-Friendly and Fire-Safety Polymeric Materials (MoE), National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), State Key Laboratory of Polymer Materials Engineering, College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Si-Chong Chen
- The Collaborative Innovation Center for Eco-Friendly and Fire-Safety Polymeric Materials (MoE), National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), State Key Laboratory of Polymer Materials Engineering, College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Yu-Zhong Wang
- The Collaborative Innovation Center for Eco-Friendly and Fire-Safety Polymeric Materials (MoE), National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), State Key Laboratory of Polymer Materials Engineering, College of Chemistry, Sichuan University, Chengdu 610064, China
| |
Collapse
|
19
|
Krishnan S, Chinnadurai GS, Ravishankar K, Raghavachari D, Perumal P. Statistical augmentation of polyhydroxybutyrate production by Isoptericola variabilis: Characterization, moulding, in vitro cytocompatibility and biodegradability evaluation. Int J Biol Macromol 2020; 166:80-97. [PMID: 33096176 DOI: 10.1016/j.ijbiomac.2020.10.089] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2020] [Revised: 10/02/2020] [Accepted: 10/12/2020] [Indexed: 02/08/2023]
Abstract
This study aimed to explore the production of polyhydroxybutyrate (PHB), a polyhydroxyalkanoate (PHA), which has been widely considered as a potential substitute for the synthetic polymers. Among 53 actinomycete isolates, 11 of them were found to be PHB positive and the quantity of PHB from the positive isolates varied from 10.5 to 29.82 wt% on a dry cell weight basis. A strain designated as PPLAT 012, accumulated relatively higher PHB and has been identified as Isoptericola variabilis by 16S rRNA gene sequence analysis. An effort has also been made to optimize the PHB production by the hyper-producing strain using the conventional, one-factor-at-a-time, and statistical response surface methodologies and the maximum PHB production (46.18%) in DSMZ medium, amended with 12% glucose and 9% potassium nitrate with a pH of 7.0. Further, the characteristic properties such as processability, cytocompatibility and biodegradability of the extracted PHB was also demonstrated. The physical properties of the recovered PHB was further improved by blending with PLA and the resultant blends were characterized. The present investigation has demonstrated that the isolate, Isoptericola variabilis, could be utilized as a potential source for the production of PHB with desirable characteristics, suitable for biomedical applications.
Collapse
Affiliation(s)
- Sivakumar Krishnan
- Centre for Advanced Studies in Botany, University of Madras, Guindy Campus, Chennai 600 025, India
| | - Gandhi Shree Chinnadurai
- Centre for Advanced Studies in Botany, University of Madras, Guindy Campus, Chennai 600 025, India
| | - Kartik Ravishankar
- Department of Chemistry, Indian Institute of Technology Madras, Chennai 600036, India
| | | | - Palani Perumal
- Centre for Advanced Studies in Botany, University of Madras, Guindy Campus, Chennai 600 025, India.
| |
Collapse
|
20
|
Dual-Functioning Antibacterial Eugenol-Derived Plasticizers for Polylactide. Biomolecules 2020; 10:biom10071077. [PMID: 32698323 PMCID: PMC7407572 DOI: 10.3390/biom10071077] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2020] [Revised: 07/10/2020] [Accepted: 07/16/2020] [Indexed: 11/21/2022] Open
Abstract
Dual-functioning additives with plasticizing and antibacterial functions were designed by exploiting the natural aromatic compound eugenol and green platform chemical levulinic acid or valeric acid that can be produced from biobased resources. One-pot synthesis methodology was utilized to create three ester-rich plasticizers. The plasticizers were thoroughly characterized by several nuclear magnetic resonance techniques (1H NMR, 13C NMR, 31P NMR, HSQC, COSY, HMBC) and by electrospray ionization-mass spectrometry (ESI-MS) and their performances, as plasticizers for polylactide (PLA), were evaluated. The eugenyl valerate was equipped with a strong capability to depress the glass transition temperature (Tg) of PLA. Incorporating 30 wt% plasticizer led to a reduction of the Tg by 43 °C. This was also reflected by a remarkable change in mechanical properties, illustrated by a strain at break of 560%, almost 110 times the strain for the breaking of neat PLA. The two eugenyl levulinates also led to PLA with significantly increased strain at breaking. The eugenyl levulinates portrayed higher thermal stabilities than eugenyl valerate, both neat and in PLA blends. The different concentrations of phenol, carboxyl and alcohol functional groups in the three plasticizers caused different bactericidal activities. The eugenyl levulinate with the highest phenol-, carboxyl- and alcohol group content significantly inhibited the growth of Staphylococcus aureus and Escherichia coli, while the other two plasticizers could only inhibit the growth of Staphylococcus aureus. Thus, the utilization of eugenol as a building block in plasticizer design for PLA illustrated an interesting potential for production of additives with dual functions, being both plasticizers and antibacterial agents.
Collapse
|
21
|
Vu DH, Åkesson D, Taherzadeh MJ, Ferreira JA. Recycling strategies for polyhydroxyalkanoate-based waste materials: An overview. BIORESOURCE TECHNOLOGY 2020; 298:122393. [PMID: 31757612 DOI: 10.1016/j.biortech.2019.122393] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/18/2019] [Revised: 11/05/2019] [Accepted: 11/07/2019] [Indexed: 05/06/2023]
Abstract
The plastics market is dominated by fossil-based polymers, but their gradual replacement by bioplastics (e.g., polyhydroxyalkanoates) is occurring. However, recycling strategies need to be developed to truly unveil the impact of bioplastics on waste accumulation. This review provides a state of the art of recycling strategies investigated for polyhydroxyalkanoate-based polymers and proposes future research avenues. Research on mechanical and chemical recycling is dominated by the use of extrusion and pyrolysis, respectively, while that on biodegradation of polyhydroxyalkanoates is related to soil and aquatic samples, and to anaerobic digestion towards biogas production. Research gaps exist in the relationships between polymer composition and ease of use of all recycling strategies investigated. This is of utmost importance since it will influence the need for separation at the source. Therefore, research emphasis needs to be given to the area to follow the continuous improvement of the process economics towards widespread commercial production of polyhydroxyalkanoates.
Collapse
Affiliation(s)
- Danh H Vu
- Swedish Centre for Resource Recovery, University of Borås, 501 90 Borås, Sweden
| | - Dan Åkesson
- Swedish Centre for Resource Recovery, University of Borås, 501 90 Borås, Sweden
| | | | - Jorge A Ferreira
- Swedish Centre for Resource Recovery, University of Borås, 501 90 Borås, Sweden
| |
Collapse
|
22
|
Mo XZ, Wei FX, Tan DF, Pang JY, Lan CB. The compatibilization of PLA-g-TPU graft copolymer on polylactide/thermoplastic polyurethane blends. JOURNAL OF POLYMER RESEARCH 2020. [DOI: 10.1007/s10965-019-1999-7] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
23
|
Wang Y, Ying Z, Xie W, Wu D. Cellulose nanofibers reinforced biodegradable polyester blends: Ternary biocomposites with balanced mechanical properties. Carbohydr Polym 2020; 233:115845. [PMID: 32059897 DOI: 10.1016/j.carbpol.2020.115845] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2019] [Revised: 01/06/2020] [Accepted: 01/07/2020] [Indexed: 01/13/2023]
Abstract
Blending two biodegradable aliphatic polyesters with complementary bulk properties is an easy way of tuning their final properties. In this work, the ductile poly(butylene succinate) was mixed with polylactide, and as expectable, the blends show improved toughness with sharply reduced strengths. The pristine cellulose nanofibers were then used as the reinforcement for the blends. It is found that most nanofibers are dispersed in the polylactide phase because polylactide has better affinity to nanofibers, and the lower viscosity level of polylactide also favors driving nanofibers into the continuous polylactide phase during melting mixing. In this case, the strength and rigidity losses resulted from the presence of soft poly(butylene succinate) phase are compensated to some extent. To further improve mechanical properties, a two-step approach (reactive processing of blends, followed by the incorporation with nanofibers) was developed. This work provides an interesting way of fabricating fully biodegradable composites with well-balanced mechanical performance.
Collapse
Affiliation(s)
- Yuankun Wang
- School of Chemistry & Chemical Engineering, Yangzhou University, Jiangsu, Yangzhou, 225002, PR China
| | - Zeren Ying
- School of Chemistry & Chemical Engineering, Yangzhou University, Jiangsu, Yangzhou, 225002, PR China
| | - Wenyuan Xie
- School of Chemistry & Chemical Engineering, Yangzhou University, Jiangsu, Yangzhou, 225002, PR China; Institution of Innovative Materials & Energy, Yangzhou, Jiangsu Province, 225002, PR China
| | - Defeng Wu
- School of Chemistry & Chemical Engineering, Yangzhou University, Jiangsu, Yangzhou, 225002, PR China; Provincial Key Laboratories of Environmental Engineering & Materials, Jiangsu, Yangzhou, 225002, PR China.
| |
Collapse
|
24
|
Zhao X, Hu H, Wang X, Yu X, Zhou W, Peng S. Super tough poly(lactic acid) blends: a comprehensive review. RSC Adv 2020; 10:13316-13368. [PMID: 35492128 PMCID: PMC9051451 DOI: 10.1039/d0ra01801e] [Citation(s) in RCA: 113] [Impact Index Per Article: 28.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2020] [Accepted: 03/21/2020] [Indexed: 12/18/2022] Open
Abstract
Poly(lactic acid) or poly(lactide) (PLA) is a renewable, bio-based, and biodegradable aliphatic thermoplastic polyester that is considered a promising alternative to petrochemical-derived polymers in a wide range of commodity and engineering applications. However, PLA is inherently brittle, with less than 10% elongation at break and a relatively poor impact strength, which limit its use in some specific areas. Therefore, enhancing the toughness of PLA has been widely explored in academic and industrial fields over the last two decades. This work aims to summarize and organize the current development in super tough PLA fabricated via polymer blending. The miscibility and compatibility of PLA-based blends, and the methods and approaches for compatibilized PLA blends are briefly discussed. Recent advances in PLA modified with various polymers for improving the toughness of PLA are also summarized and elucidated systematically in this review. Various polymers used in toughening PLA are discussed and organized: elastomers, such as petroleum-based traditional polyurethanes (PUs), bio-based elastomers, and biodegradable polyester elastomers; glycidyl ester compatibilizers and their copolymers/elastomers, such as poly(ethylene-co-glycidyl methacrylate) (EGMA), poly(ethylene-n-butylene-acrylate-co-glycidyl methacrylate) (EBA-GMA); rubber; petroleum-based traditional plastics, such as PE and PP; and various biodegradable polymers, such as poly(butylene adipate-co-terephthalate) (PBAT), polycaprolactone (PCL), poly(butylene succinate) (PBS), and natural macromolecules, especially starch. The high tensile toughness and high impact strength of PLA-based blends are briefly outlined, while the super tough PLA-based blends with impact strength exceeding 50 kJ m−2 are elucidated in detail. The toughening strategies and approaches of PLA based super tough blends are summarized and analyzed. The relationship of the properties of PLA-based blends and their morphological parameters, including particle size, interparticle distance, and phase morphologies, are presented. PLA is a renewable, bio-based, and biodegradable aliphatic thermoplastic polyester that is considered a promising alternative to petrochemical-derived polymers in a wide range of commodity and engineering applications.![]()
Collapse
Affiliation(s)
- Xipo Zhao
- Hubei Provincial Key Laboratory of Green Materials for Light Industry
- Collaborative Innovation Center of Green Light-weight Materials and Processing
- Hubei University of Technology
- Wuhan 430068
- China
| | - Huan Hu
- Hubei Provincial Key Laboratory of Green Materials for Light Industry
- Collaborative Innovation Center of Green Light-weight Materials and Processing
- Hubei University of Technology
- Wuhan 430068
- China
| | - Xin Wang
- Hubei Provincial Key Laboratory of Green Materials for Light Industry
- Collaborative Innovation Center of Green Light-weight Materials and Processing
- Hubei University of Technology
- Wuhan 430068
- China
| | - Xiaolei Yu
- Hubei Provincial Key Laboratory of Green Materials for Light Industry
- Collaborative Innovation Center of Green Light-weight Materials and Processing
- Hubei University of Technology
- Wuhan 430068
- China
| | - Weiyi Zhou
- Hubei Provincial Key Laboratory of Green Materials for Light Industry
- Collaborative Innovation Center of Green Light-weight Materials and Processing
- Hubei University of Technology
- Wuhan 430068
- China
| | - Shaoxian Peng
- Hubei Provincial Key Laboratory of Green Materials for Light Industry
- Collaborative Innovation Center of Green Light-weight Materials and Processing
- Hubei University of Technology
- Wuhan 430068
- China
| |
Collapse
|
25
|
Bao X, Yu L, Shen S, Simon GP, Liu H, Chen L. How rheological behaviors of concentrated starch affect graft copolymerization of acrylamide and resultant hydrogel. Carbohydr Polym 2019; 219:395-404. [PMID: 31151540 DOI: 10.1016/j.carbpol.2019.05.034] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2018] [Revised: 05/06/2019] [Accepted: 05/09/2019] [Indexed: 01/22/2023]
Abstract
Corn starches with different amylose/amylopectin ratios were used to explore the effect of rheological behaviors of concentrated system on the graft copolymerization of acrylamide and resultant hydrogels, which sheds a light on their reactive extrusion process. The viscoelastic moduli of starch melts increased with increasing amylose content (AC), leading to a decreased extent of micro-mixing detected by a reduced rheokinetic rate. With increasing AC, the graft efficiency was decreased but with almost similar monomer conversion (about 87.5%) and nearly equivalent graft content. XRD and SAXS spectra revealed that the extent of retrogradation of the starches were increased and two-phase separation was enhanced for hydrogels with increasing AC. Interestingly, microscopic analysis showed the superabsorbent hydrogel from the starch with AC of 50% exhibited a gridding membrane porous structure, resulting in a higher water absorbent capacity of 550 g/g. This was attributed to the moderate crosslinking and the slightly greater graft content.
Collapse
Affiliation(s)
- Xianyang Bao
- Center for Polymer from Renewable Resources, SFSE, South China University of Technology, Guangzhou, Guangdong, 510640, China; CSIRO Manufacturing, Research Way, Clayton, Vic, 3168, Australia; Department of Materials Science and Engineering, Monash University, Melbourne, Vic, 3800, Australia
| | - Long Yu
- Center for Polymer from Renewable Resources, SFSE, South China University of Technology, Guangzhou, Guangdong, 510640, China; Sino-Singapore International Joint Research Institute, Guangzhou, Guangdong, 510663, China.
| | - Shirley Shen
- CSIRO Manufacturing, Research Way, Clayton, Vic, 3168, Australia
| | - George P Simon
- Department of Materials Science and Engineering, Monash University, Melbourne, Vic, 3800, Australia
| | - Hongsheng Liu
- Center for Polymer from Renewable Resources, SFSE, South China University of Technology, Guangzhou, Guangdong, 510640, China; Sino-Singapore International Joint Research Institute, Guangzhou, Guangdong, 510663, China
| | - Ling Chen
- Center for Polymer from Renewable Resources, SFSE, South China University of Technology, Guangzhou, Guangdong, 510640, China
| |
Collapse
|
26
|
Somsunan R, Noppakoon S, Punyodom W. Effect of G40 plasticizer on the properties of ternary blends of biodegradable PLA/PBS/G40. JOURNAL OF POLYMER RESEARCH 2019. [DOI: 10.1007/s10965-019-1748-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
|
27
|
Younas M, Noreen A, Sharif A, Majeed A, Hassan A, Tabasum S, Mohammadi A, Zia KM. A review on versatile applications of blends and composites of CNC with natural and synthetic polymers with mathematical modeling. Int J Biol Macromol 2019; 124:591-626. [PMID: 30447361 DOI: 10.1016/j.ijbiomac.2018.11.064] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2018] [Revised: 11/04/2018] [Accepted: 11/12/2018] [Indexed: 12/20/2022]
Abstract
Cellulose is world's most abundant, renewable and recyclable polysaccharide on earth. Cellulose is composed of both amorphous and crystalline regions. Cellulose nanocrystals (CNCs) are extracted from crystalline region of cellulose. The most attractive feature of CNC is that it can be used as nanofiller to reinforce several synthetic and natural polymers. In this article, a comprehensive overview of modification of several natural and synthetic polymers using CNCs as reinforcer in respective polymer matrix is given. The immense activities of CNCs are successfully utilized to enhance the mechanical properties and to broaden the field of application of respective polymer. All the technical scientific issues have been discussed highlighting the recent advancement in biomedical and packaging field.
Collapse
Affiliation(s)
- Muhammad Younas
- Department of Mathematics, COMSATS University Islamabad, Lahore Campus, Lahore, Pakistan
| | - Aqdas Noreen
- Institute of Chemistry, Government College University, Faisalabad 38030, Pakistan
| | - Aqsa Sharif
- Institute of Chemistry, Government College University, Faisalabad 38030, Pakistan
| | - Ayesha Majeed
- Institute of Chemistry, Government College University, Faisalabad 38030, Pakistan
| | - Abida Hassan
- Institute of Chemistry, Government College University, Faisalabad 38030, Pakistan
| | - Shazia Tabasum
- Institute of Chemistry, Government College University, Faisalabad 38030, Pakistan
| | - Abbas Mohammadi
- Department of Polymer Chemistry, University of Isfahan, Isfahan, Islamic Republic of Iran
| | - Khalid Mahmood Zia
- Institute of Chemistry, Government College University, Faisalabad 38030, Pakistan.
| |
Collapse
|
28
|
Cal AJ, Grubbs B, Torres LF, Riiff TJ, Kibblewhite RE, Orts WJ, Lee CC. Nucleation and plasticization with recycled low‐molecular‐weight poly‐3‐hydroxybutyrate toughens virgin poly‐3‐hydroxybutyrate. J Appl Polym Sci 2018. [DOI: 10.1002/app.47432] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Andrew J. Cal
- Bioproducts Research Unit WRRC‐Agricultural Research Service‐USDA 800 Buchanan Street Albany California 94710
| | - Brian Grubbs
- Mango Materials 490 Lake Park Ave #16098 Oakland California 94610
| | - Lennard F. Torres
- Bioproducts Research Unit WRRC‐Agricultural Research Service‐USDA 800 Buchanan Street Albany California 94710
| | - Timothy J. Riiff
- Bioproducts Research Unit WRRC‐Agricultural Research Service‐USDA 800 Buchanan Street Albany California 94710
| | - Rena E. Kibblewhite
- Bioproducts Research Unit WRRC‐Agricultural Research Service‐USDA 800 Buchanan Street Albany California 94710
| | - William J. Orts
- Bioproducts Research Unit WRRC‐Agricultural Research Service‐USDA 800 Buchanan Street Albany California 94710
| | - Charles C. Lee
- Bioproducts Research Unit WRRC‐Agricultural Research Service‐USDA 800 Buchanan Street Albany California 94710
| |
Collapse
|
29
|
Bao X, Yu L, Simon GP, Shen S, Xie F, Liu H, Chen L, Zhong L. Rheokinetics of graft copolymerization of acrylamide in concentrated starch and rheological behaviors and microstructures of reaction products. Carbohydr Polym 2018; 192:1-9. [DOI: 10.1016/j.carbpol.2018.03.040] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2017] [Revised: 03/10/2018] [Accepted: 03/14/2018] [Indexed: 12/23/2022]
|
30
|
Przybysz M, Zedler Ł, Saeb MR, Formela K. Structure-property relationships in peroxide-assisted blends of poly(ε-caprolactone) and poly(3-hydroxybutyrate). REACT FUNCT POLYM 2018. [DOI: 10.1016/j.reactfunctpolym.2018.04.006] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
|
31
|
Wang Y, Wei Z, Li Y. Toughening polylactide with epoxidized styrene-butadiene impact resin: Mechanical, morphological, and rheological characterization. J Appl Polym Sci 2018. [DOI: 10.1002/app.46058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Yanshai Wang
- State Key Laboratory of Fine Chemicals, Key Laboratory of Polymer Science and Engineering of Liaoning Province, Liaoning Engineering Laboratory of Advanced Polymer Materials, Department of Polymer Science and Engineering, Faculty of Chemical, Environmental and Biological Science and Technology; Dalian University of Technology; Dalian 116024 China
| | - Zhiyong Wei
- State Key Laboratory of Fine Chemicals, Key Laboratory of Polymer Science and Engineering of Liaoning Province, Liaoning Engineering Laboratory of Advanced Polymer Materials, Department of Polymer Science and Engineering, Faculty of Chemical, Environmental and Biological Science and Technology; Dalian University of Technology; Dalian 116024 China
| | - Yang Li
- State Key Laboratory of Fine Chemicals, Key Laboratory of Polymer Science and Engineering of Liaoning Province, Liaoning Engineering Laboratory of Advanced Polymer Materials, Department of Polymer Science and Engineering, Faculty of Chemical, Environmental and Biological Science and Technology; Dalian University of Technology; Dalian 116024 China
| |
Collapse
|
32
|
Effect of Surface Modification on Impact Strength and Flexural Strength of Poly(lactic acid)/Silicon Carbide Nanocomposites. Macromol Res 2018. [DOI: 10.1007/s13233-018-6028-x] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
|
33
|
Rivas LF, Casarin SA, Nepomuceno NC, Alencar MI, Agnelli JAM, Medeiros ESD, Wanderley Neto ADO, Oliveira MPD, Medeiros AMD, Santos ASFE. Reprocessability of PHB in extrusion: ATR-FTIR, tensile tests and thermal studies. POLIMEROS 2017. [DOI: 10.1590/0104-1428.2406] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
|
34
|
Li S, Deng L, Xu C, Wu Q, Wang Z. Making a Supertough Flame-Retardant Polylactide Composite through Reactive Blending with Ethylene-Acrylic Ester-Glycidyl Methacrylate Terpolymer and Addition of Aluminum Hypophosphite. ACS OMEGA 2017; 2:1886-1895. [PMID: 31457549 PMCID: PMC6641001 DOI: 10.1021/acsomega.7b00162] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/11/2017] [Accepted: 04/25/2017] [Indexed: 06/02/2023]
Abstract
Biocompatible and biodegradable polylactide (PLA) composites with supertough mechanical property and sufficient flame retardancy were fabricated by employing a facile approach involving reactive blending of PLA and ethylene-acrylic ester-glycidyl methacrylate terpolymer (EGMA), with the addition of aluminum hypophosphite (AHP) as an effective flame retardant. In consideration of the balance between mechanical property and flame retardancy, the optimal formula was taking a PLA/EGMA 80/20 blend (supertough STPLA) as the matrix and adding 20 wt % of AHP (relative to the mass of STPLA) as the flame retardant, coded as STPLA/20AHP. The mechanical property test showed that for STPLA/20AHP the elongation at break was increased by about 22 times and the notched Izod impact strength was enhanced by approximately 11 times as compared to those for neat PLA. The flame-retardant property test showed that for STPLA/20AHP the limiting oxygen index value reached 26.6% and the UL-94 V0 rating test was passed. Thermogravimetric analysis, microscale combustion calorimetry, and cone calorimeter were further applied to reveal the thermal stability and combustion behaviors of STPLA/xAHP, respectively, where x indicated the mass content of AHP in percentage. The phase separation morphology, dispersion of AHP particles in STPLA matrix, and fracture surfaces and char residues after flame burning were examined by phase contrast optical microscopy and scanning electron microscopy, respectively, which helped comprehend the results obtained from the mechanical property and flame retardancy tests. The supertough STPLA/xAHP, with sufficient flame retardancy as prepared in this work, could have a potential for engineering applications.
Collapse
Affiliation(s)
| | | | - Cui Xu
- CAS Key Laboratory of Soft
Matter Chemistry, Department of Polymer Science and Engineering, Hefei
National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Qianghua Wu
- CAS Key Laboratory of Soft
Matter Chemistry, Department of Polymer Science and Engineering, Hefei
National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Zhigang Wang
- CAS Key Laboratory of Soft
Matter Chemistry, Department of Polymer Science and Engineering, Hefei
National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| |
Collapse
|
35
|
Increase the elongation at break of poly (lactic acid) composites for use in food packaging films. Sci Rep 2017; 7:46767. [PMID: 28466854 PMCID: PMC5413939 DOI: 10.1038/srep46767] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2017] [Accepted: 03/27/2017] [Indexed: 11/09/2022] Open
Abstract
Poly (3-hydroxy butyrate) (PHB), cellulose nano crystal (CNC) and a plasticizer (TBC) are mixed together with PLLA with the aim to increase the elongation at break for use in the food packing sector. Spherical (CNC) and fibril nano crystal (CNF) were prepared by hydrolysis of microcrystalline cellulose (MCC) in distilled water, and then stirred using a magnetic stirrer for 15 days and ultrasonic treatment without using any acids as green method. The morphology, thermal, and mechanical properties were studied using POM, DSC, WAXD, SEM and tensile testing, respectively. DSC demonstrated that the addition of PHB, CNC and TBC to PLLA matrix lead to reduce Tg, TCC and Tm than pure PLLA. FT-IR verified that the carbonyl group C=O appeared broad and some peaks in the PLLA composites 5, 6 and 7 shifted from 3.98 × 108 to 4.07 × 108 Hz, at 3.54 × 108 to 3.44 × 108 Hz, at 3.19 × 108 to 3.13 × 108 Hz. Mechanical testing shows that pure PLLA is brittle, and the elongation at break of PLLA composites reaches up to 205%, making it suitable to use in food packaging.
Collapse
|
36
|
Affiliation(s)
- Ming Wang
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing, P. R. China
| | - Ying Wu
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing, P. R. China
| | - Yi-Dong Li
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing, P. R. China
| | - Jian-Bing Zeng
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing, P. R. China
| |
Collapse
|
37
|
Yao SS, Pang QQ, Song R, Jin FL, Park SJ. Fracture toughness improvement of poly(lactic acid) with silicon carbide whiskers. Macromol Res 2016. [DOI: 10.1007/s13233-016-4144-z] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
38
|
Yang X, Xu H, Odelius K, Hakkarainen M. Poly(lactide)-g-poly(butylene succinate-co-adipate) with High Crystallization Capacity and Migration Resistance. MATERIALS 2016; 9:ma9050313. [PMID: 28773437 PMCID: PMC5503035 DOI: 10.3390/ma9050313] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/12/2016] [Revised: 04/12/2016] [Accepted: 04/19/2016] [Indexed: 11/16/2022]
Abstract
Plasticized polylactide (PLA) with increased crystallization ability and prolonged life-span in practical applications due to the minimal plasticizer migration was prepared. Branched plasticized PLA was successfully obtained by coupling poly(butylene succinate-co-adipate) (PBSA) to crotonic acid (CA) functionalized PLA. The plasticization behavior of PBSA coupled PLA (PLA-CA-PBSA) and its counterpart PBSA blended PLA (PLA/PBSA) were fully elucidated. For both PLA-CA-PBSA and PLA/PBSA, a decrease of Tg to around room temperature and an increase in the elongation at break of PLA from 14% to 165% and 460%, respectively, were determined. The crystallinity was increased from 2.1% to 8.4% for PLA/PBSA and even more, to 10.6%, for PLA-CA-PBSA. Due to the inherent poor miscibility between the PBSA and PLA, phase separation occurred in the blend, while PLA-CA-PBSA showed no phase separation which, together with the higher crystallinity, led to better oxygen barrier properties compared to neat PLA and PLA/PBSA. A higher resistance to migration during hydrolytic degradation for the PLA-CA-PBSA compared to the PLA/PBSA indicated that the plasticization effect of PBSA in the coupled material would be retained for a longer time period.
Collapse
Affiliation(s)
- Xi Yang
- Department of Fibre and Polymer Technology, School of Chemical Science and Engineering, KTH Royal Institute of Technology, SE-100 44 Stockholm, Sweden.
| | - Huan Xu
- Department of Fibre and Polymer Technology, School of Chemical Science and Engineering, KTH Royal Institute of Technology, SE-100 44 Stockholm, Sweden.
| | - Karin Odelius
- Department of Fibre and Polymer Technology, School of Chemical Science and Engineering, KTH Royal Institute of Technology, SE-100 44 Stockholm, Sweden.
| | - Minna Hakkarainen
- Department of Fibre and Polymer Technology, School of Chemical Science and Engineering, KTH Royal Institute of Technology, SE-100 44 Stockholm, Sweden.
| |
Collapse
|
39
|
Xie L, Xu H, Li Z, Hakkarainen M. Structural Hierarchy and Polymorphic Transformation in Shear‐Induced Shish‐Kebab of Stereocomplex Poly(Lactic Acid). Macromol Rapid Commun 2016; 37:745-51. [DOI: 10.1002/marc.201500736] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2015] [Revised: 01/31/2016] [Indexed: 11/08/2022]
Affiliation(s)
- Lan Xie
- College of Materials and Metallurgy Guizhou University Guiyang 550025 China
- College of Polymer Science and Engineering State Key Laboratory of Polymer Materials Engineering Sichuan University Chengdu 610065 China
| | - Huan Xu
- College of Polymer Science and Engineering State Key Laboratory of Polymer Materials Engineering Sichuan University Chengdu 610065 China
- Department of Fibre and Polymer Technology KTH Royal Institute of Technology Stockholm 100 44 Sweden
| | - Zhong‐Ming Li
- College of Polymer Science and Engineering State Key Laboratory of Polymer Materials Engineering Sichuan University Chengdu 610065 China
| | - Minna Hakkarainen
- Department of Fibre and Polymer Technology KTH Royal Institute of Technology Stockholm 100 44 Sweden
| |
Collapse
|
40
|
Xu H, Yang X, Xie L, Hakkarainen M. Conformational Footprint in Hydrolysis-Induced Nanofibrillation and Crystallization of Poly(lactic acid). Biomacromolecules 2016; 17:985-95. [DOI: 10.1021/acs.biomac.5b01636] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Huan Xu
- Department
of Fibre and Polymer Technology, KTH Royal Institute of Technology, Stockholm 100 44, Sweden
- College
of Polymer Science and Engineering, State Key Laboratory of Polymer
Materials Engineering, Sichuan University, Chengdu 610065, China
| | - Xi Yang
- Department
of Fibre and Polymer Technology, KTH Royal Institute of Technology, Stockholm 100 44, Sweden
| | - Lan Xie
- College
of Polymer Science and Engineering, State Key Laboratory of Polymer
Materials Engineering, Sichuan University, Chengdu 610065, China
| | - Minna Hakkarainen
- Department
of Fibre and Polymer Technology, KTH Royal Institute of Technology, Stockholm 100 44, Sweden
| |
Collapse
|