Journal of Polymers and the Environment最新文献

{"title":"Improving the Recyclability of Polymer Composites With Cellulose Nanofibrils","authors":"Katie Copenhaver, Bivek Bista, Lu Wang, Samarthya Bhagia, Meghan Lamm, Xianhui Zhao, Mehdi Tajvidi, William M. Gramlich, Amber M. Hubbard, Caitlyn Clarkson, Douglas J. Gardner","doi":"10.1007/s10924-024-03257-x","DOIUrl":"https://doi.org/10.1007/s10924-024-03257-x","url":null,"abstract":"<p>Cellulose nanofibers (CNFs) have been widely studied for their reinforcing potential in high-performance composites. While there are numerous publications on CNF-reinforced composites in a variety of polymer matrices, few have considered the recyclability of such thermoplastic composites and whether the incorporation of CNFs deteriorates or improves their performance upon reprocessing. In this study, two thermoplastic resins, poly(lactic acid) (PLA), and glycol-modified polyethylene terephthalate (PETg), were prepared with CNF reinforcement and thermomechanically recycled to investigate the effect of CNF inclusion on the composite properties after reprocessing as well as their effect on the composites’ number of useful life cycles. Changes in mechanical, thermal, rheological, molecular, and microstructural properties of the composites and/or base resins were monitored as a function of cycle numbers. As is typical, the polymers’ molecular weight and mechanical performance deteriorated with continued processing. However, the addition of spray dried CNF was found to better maintain the mechanical performance of both polymers throughout multiple recycling steps as compared to neat samples. For example, the tensile strength of PETg with 20 wt% CNF after 6 processing cycles was found to exceed that of virgin neat PETg, and higher loadings of CNF were found to preserve a higher yield strength during multiple rounds of reprocessing compared to PETg composites with lower CNF loadings. Ultimately this study indicates that the addition of CNF to some thermoplastic materials can increase both their sustainability by offsetting the use of high-embodied energy resins and their circularity by enabling performance retention over more use cycles.</p>","PeriodicalId":659,"journal":{"name":"Journal of Polymers and the Environment","volume":null,"pages":null},"PeriodicalIF":5.3,"publicationDate":"2024-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141171290","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Optimizing Lithium-Ion Battery Discharge Capacity Performance by Nanosilica-Modified Poly (Vinyl Alcohol) Separator","authors":"Ali Shahbazi, Mohammad Fasihi, Hasan Farrokhzad, Ali Yavari","doi":"10.1007/s10924-024-03320-7","DOIUrl":"https://doi.org/10.1007/s10924-024-03320-7","url":null,"abstract":"<p>In this research, pure and composite separators based on poly (vinyl alcohol) (PVA) and silica nanoparticles were made by using non-solvent induced phase separation (NIPS) method. The research carried out includes examining Field emission scanning electron microscopy (FESEM) images, pores diameter distribution, porosity measurement, electrolyte uptake, electrolyte retention, contact angle with electrolyte, thermal shrinkage, X-ray Diffraction (XRD) analysis, Energy dispersive X-ray spectroscopy (EDX) analysis and charge and discharge analysis of the resulting lithium-ion batteries. The results obtained indicate improved performance, with increased polymer or silica concentrations leading to enhanced pore characteristics and lithium-ion battery discharge capacity density. According to the battery charge and discharge analysis, at rates of 0.1 C, 0.2 C, 0.5 C the discharge capacity density for a lithium-ion battery consisting of commercial PP separator (Celgard 2500) was 180, 172, 166 mA h g⁻¹ and for optimized composite separator was 200, 188, 174 mA h g⁻¹.</p>","PeriodicalId":659,"journal":{"name":"Journal of Polymers and the Environment","volume":null,"pages":null},"PeriodicalIF":5.3,"publicationDate":"2024-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141170876","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Fructose-Based Non-Isocyanate Polyurethane/Poly (Sodium Acrylate) Hydrogels: Design, Synthesis and Environmental Applications","authors":"Pooja Singh, Raminder Kaur","doi":"10.1007/s10924-024-03317-2","DOIUrl":"https://doi.org/10.1007/s10924-024-03317-2","url":null,"abstract":"<p>Conventional methods for synthesising polyurethane hydrogels encompass toxic isocyanates and organic solvents, limiting their eco-friendliness and ease of synthesis. In response, this study introduces an innovative approach to synthesising fructose-based non-isocyanate polyurethane (NIPU) hydrogel (FNHG), eliminating the need for isocyanates. Initially, fructose-based NIPU (FNPU) was synthesised using dimethyl carbonate and hexamethylene diamine under mild reaction conditions, paving the way for a greener polyurethane variant. Subsequently, a free radical polymerization technique was employed in an aqueous medium. This process allowed for the integration of poly(sodium acrylate), and N, N-methylene bisacrylamide, leading to to the development of FNHG. Remarkably short gelation time of just 30 min at 60 ℃ was achieved, signifying a significant advancement in the synthesis process. The synthesized NIPU-based hydrogels exhibited outstanding efficiency in the removal of crystal violet (CV) and malachite green (MG) dyes from aqueous media. With an impressive removal efficiency of 96.87% for CV and an astounding 99.8% for MG, these hydrogels demonstrated high effectiveness in remediation efforts. The study’s novelty lies in both the synthesis methodology, utilising FNPU, and the exceptional efficiency exhibited by these hydrogels in eliminating diverse dyes from contaminated water. Furthermore, the structure of FNPU was confirmed using FTIR and ¹H NMR spectroscopy, adding robustness to our findings. This research not only presents a solution to the limitations of traditional polyurethane synthesis but also demonstrates the potential of fructose-based NIPU hydrogels (FNHG) as eco-friendly and efficient agents for water purification.</p><h3 data-test=\"abstract-sub-heading\">Graphical Abstract</h3>","PeriodicalId":659,"journal":{"name":"Journal of Polymers and the Environment","volume":null,"pages":null},"PeriodicalIF":5.3,"publicationDate":"2024-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141171115","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Synergistic Enhancement of Mechanical Strength and Antibacterial Activity in 3D Core–Shell Bone Scaffolds Incorporating Phosphate-Modified Pomegranate Peel Powder Within Polylactic Acid/Poly (Glycerol-Succinic Acid) Composite","authors":"Mohammadreza Shojaei, Davood Bizari, Shahrokh Shojaei, Pedram Tehrani, Mohsen Korani, Lokman Uzun, Wei-Hsin Chen, Vahabodin Goodarzi","doi":"10.1007/s10924-024-03296-4","DOIUrl":"https://doi.org/10.1007/s10924-024-03296-4","url":null,"abstract":"<p>Despite the imposing regenerative abilities of bone tissue, accomplishing rapid and successful bone regeneration remains challenging due to the complex back-and-forth of factors influencing the healing process. In bone tissue engineering, the mechanical strength and biocompatibility of 3D polymeric scaffolds, which the former is more challenging for bone tissue, are yet to be an unsolved problem. Herein, 3D cylindrical core–shell scaffolds were fabricated by dual-leaching technique using poly (Glycerol-Succinic Acid) (PGSU) as the sell, in combination with phosphate-modified pomegranate peels powder, and poly lactic acid (PLA). The main objective of developing such scaffolds is not only to improve compressive strength but also to enhance cell viability and antibacterial activity. Overall results confirmed that the developed core–shell scaffold, containing phosphate-modified pomegranate peel powder, on one hand, had an appropriate compressive strength due to the presence of PLA in its core; on the other hand, showed acceptable antibacterial activity for using pomegranate powder. Also, it demonstrated that the surface modification was successfully done. By incorporating phosphate-modified pomegranate peel powder into the core–shell scaffold, compressive strength of almost 6000 Pa was achieved, with a porosity of 90% alongside cell viability of almost 100%, as indicated by the MTT assay. The main reason for the appropriate biological response of the developed scaffold relevant to the biomolecule compounds presented in pomegranate powder, including tannins, phytochemicals, flavonoids, and antioxidants, as well as the presence of phosphate ions. Therefore, as the final perspective, the synergistic effects resulting from the combination of the scaffold's structural properties and the antibacterial properties of phosphate-modified pomegranate powder contribute to its overall effectiveness.</p>","PeriodicalId":659,"journal":{"name":"Journal of Polymers and the Environment","volume":null,"pages":null},"PeriodicalIF":5.3,"publicationDate":"2024-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141171444","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Supertough Shape Memory Bionanocomposites of Thermoplastic Vulcanizates Based on PLA- EVA and Cellulose Nanocrystal","authors":"Reyhaneh Aminyan, Hamid Garmabi, Ali Asghar Katbab","doi":"10.1007/s10924-024-03309-2","DOIUrl":"https://doi.org/10.1007/s10924-024-03309-2","url":null,"abstract":"<p>Polylactic acid (PLA) is the main candidate among the synthetic polymers for food packaging application. However, its poor processing and mechanical performance have limited its practical application. Here, we prepared a supertough thermoplastic vulcanizate (TPV) using PLA and ethylene vinyl acetate (EVA) copolymer with optimized EVA composition. The dynamic curing agent, dicumyl peroxide (DCP), was used as EVA-DCP masterbatch to improve its curing efficiency. Cellulose nanocrystals (CNCs) were further used as the biocompatible and renewable nanofiller, used in the form of PLA-CNC masterbatch, leading to improved mechanical strength and shape memory performance (SMP). Dynamically curing the thermoplastic elastomer (TPE) precursors diminished the temperature-dependency of elastic modulus (<span>(E^{prime})</span>) prior to PLA’s glass transition. Thus, improving the shape fixity (FR) of the TPVs compared to their TPEs as the TPVs showed <span>(FR&gt;98%)</span> while the TPV60 (60% PLA) showed the highest FR of 100%. The TPVs showed higher recovery ratio (RR) with <span>(RR&gt;87.25%)</span> with the TPV60 containing 1.5% CNC, which showed the highest RR of 94.1%. The mechanical performance analyses showed that the optimized TPV: CNC possesses a supertough nature, achieved by tuning the rheological behavior and morphology of the final TPVs. The results were quite promising for smart food packaging applications.</p>","PeriodicalId":659,"journal":{"name":"Journal of Polymers and the Environment","volume":null,"pages":null},"PeriodicalIF":5.3,"publicationDate":"2024-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141148506","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Reducing Hydrophilicity of Cellulose Nanofibrils Through Lipase-Catalyzed Surface Engineering with Renewable Grafting Agents","authors":"Guilherme Rezende Costa, Marcus Vinícius Nascimento, Braz de Souza Marotti, V. Arantes","doi":"10.1007/s10924-024-03316-3","DOIUrl":"https://doi.org/10.1007/s10924-024-03316-3","url":null,"abstract":"","PeriodicalId":659,"journal":{"name":"Journal of Polymers and the Environment","volume":null,"pages":null},"PeriodicalIF":5.3,"publicationDate":"2024-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141100112","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Correction to: Sustainable Production of Microcrystalline Cellulose Through Gas Phase Hydrolysis for Pharmaceutical Applications: Characterization and Life Cycle Assessment","authors":"Jaber Hosseinzadeh, A. Abdulkhani, Alireza Ashori, Pimenov Sergey Dmirievich, Ali Hajiahmad, Hamid Abdolmaleki, Fubao Sun, Zahra Echresh Zadeh","doi":"10.1007/s10924-024-03303-8","DOIUrl":"https://doi.org/10.1007/s10924-024-03303-8","url":null,"abstract":"","PeriodicalId":659,"journal":{"name":"Journal of Polymers and the Environment","volume":null,"pages":null},"PeriodicalIF":5.3,"publicationDate":"2024-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141109296","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Innovative High-Performance Antimicrobial Agent and Dye Adsorbent Based on Magnetic/Copper Nanoparticles","authors":"Mohammadreza Moghaddam-Manesh, Reza Darvishi, Ali Moshkriz","doi":"10.1007/s10924-024-03289-3","DOIUrl":"https://doi.org/10.1007/s10924-024-03289-3","url":null,"abstract":"","PeriodicalId":659,"journal":{"name":"Journal of Polymers and the Environment","volume":null,"pages":null},"PeriodicalIF":5.3,"publicationDate":"2024-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141110680","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Modeling Degradation Behavior of Biodegradable Polymers for Medical Devices: A Comparative Review of Phenomenological and Stochastic Approaches","authors":"Saeed Sanjari, P. Saraeian, Shahram Etemadi Haghighi, Ali Alinia-ziazi","doi":"10.1007/s10924-024-03285-7","DOIUrl":"https://doi.org/10.1007/s10924-024-03285-7","url":null,"abstract":"","PeriodicalId":659,"journal":{"name":"Journal of Polymers and the Environment","volume":null,"pages":null},"PeriodicalIF":5.3,"publicationDate":"2024-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141113679","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Development and Characterization of Sodium Alginate-Based Bio-hybrid Super Absorbent Polymer with High Retention Capacity Suitable for Baby Diapers","authors":"Saeed Ismaeilimoghadam, Mehdi Jonoobi, Yahya Hamzeh, Bahareh Azimi, Andrea Mezzetta, Lorenzo Guazzelli, Patrizia Cinelli, Maurizia Seggiani, Serena Danti","doi":"10.1007/s10924-024-03297-3","DOIUrl":"https://doi.org/10.1007/s10924-024-03297-3","url":null,"abstract":"<p>Due to their capacity of water absorption, super absorbent polymers (SAPs) are greatly requested in hygienic applications, thus representing large volume products needing for a good biodegradability. This study aims to develop new SAPs for baby diapers by combining sodium alginate (SA) and cellulose nanocrystals (CNC) with acrylic acid (AA). The effect of different AA/SA ratios and CNC concentrations in the presence of ammonium persulfate (APS) as an initiator, and <i>N–N-</i>methylene bis-acrylamide (NMBA) as a cross-linker is investigated. We assess morphological and physicochemical properties of the SAPs, as well as their absorption characteristics and rheological properties. The results show that SAPs with AA/SA weight ratio of 70:30 containing 2% w/w CNC have the highest water absorption capacity, i.e., 78.4 g/g in saline solution. These SAPs also demonstrate high retention capacity and better absorption capacity under load than other SAPs. We further optimize the formulation by increasing the neutralization degree of AA and reducing the solid content, reaching an absorption capacity in the salt solution up to 100.08 g/g. Finally, the absorbent core made with fewer amounts of SAPs and fluff pulp led to functional properties superior to those of commercial baby diapers. High polysaccharide content SAPs could contribute to improve diaper sustainability.</p>","PeriodicalId":659,"journal":{"name":"Journal of Polymers and the Environment","volume":null,"pages":null},"PeriodicalIF":5.3,"publicationDate":"2024-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141060972","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}