Journal of Polymers and the Environment最新文献

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Assessment of Fungal Decomposition Strategies as a Step Towards the Development of Sustainable Pressure Sensitive Adhesives 评估真菌分解策略作为开发可持续压敏胶的一个步骤
IF 5.3 3区 工程技术
Journal of Polymers and the Environment Pub Date : 2024-06-07 DOI: 10.1007/s10924-024-03329-y
J. Castaño, Drew A. Hauge, S. Severtson, Jiwei Zhang
{"title":"Assessment of Fungal Decomposition Strategies as a Step Towards the Development of Sustainable Pressure Sensitive Adhesives","authors":"J. Castaño, Drew A. Hauge, S. Severtson, Jiwei Zhang","doi":"10.1007/s10924-024-03329-y","DOIUrl":"https://doi.org/10.1007/s10924-024-03329-y","url":null,"abstract":"","PeriodicalId":659,"journal":{"name":"Journal of Polymers and the Environment","volume":null,"pages":null},"PeriodicalIF":5.3,"publicationDate":"2024-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141374442","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}
引用次数: 0
The Use of the Straightforward Diels-Alder Reaction for the Preparation of Monomers From Tung Oil and Itaconic Acid-Derived Precursors: Synthesis, Characterization, and Screening of Their Polymerization Reactions 利用简单的 Diels-Alder 反应从桐油和衣康酸衍生前体制备单体:其聚合反应的合成、表征和筛选
IF 5.3 3区 工程技术
Journal of Polymers and the Environment Pub Date : 2024-06-04 DOI: 10.1007/s10924-024-03326-1
Julio Antonio Conti Silva, Rafael Lopes Quirino, Talita Martins Lacerda
{"title":"The Use of the Straightforward Diels-Alder Reaction for the Preparation of Monomers From Tung Oil and Itaconic Acid-Derived Precursors: Synthesis, Characterization, and Screening of Their Polymerization Reactions","authors":"Julio Antonio Conti Silva, Rafael Lopes Quirino, Talita Martins Lacerda","doi":"10.1007/s10924-024-03326-1","DOIUrl":"https://doi.org/10.1007/s10924-024-03326-1","url":null,"abstract":"<p>The strict dependance of the polymer industry on petroleum-based chemicals has risen awareness on environmental safety and sustainability, motivating an at least partial shift towards the utilization of renewable platforms as alternative sources of raw materials. The strategy gains notoriety if one considers the preparation of novel macromolecules that cannot be obtained from petroleum using reasonable synthetic steps. In this work, tung oil and itaconic acid were used as bio-based feedstocks for the synthesis of novel polyfunctional monomers and polyesters. Primarily, methyl α-eleostearate, synthesized from tung oil and methanol, was applied as diene in a Diels-Alder reaction with dimethyl itaconate, leading to the formation of tri-ester monomers. A petroleum-based dienophile, <i>n</i>-butyl methacrylate, was also used to produce a bifunctional monomer. The synthesized monomers were characterized by FTIR/ATR, <sup>1</sup>H NMR and GC-MS, and then submitted to step-growth polymerizations with either glycerol or ethylene glycol, which allowed to synthesize novel linear and crosslinked bio-based polyesters. Spectroscopic analyses of the products suggested the success of the reactions, and TGA did not detect the presence of volatiles, with the materials being stable at temperatures up to 240 °C. DSC indicated a glass transition temperature at approximately 0 °C for one of the polymers, and an exothermic peak centered at about 140 °C, likely resulting from polymerization of the unsaturations in the polyesters. GPC indicated peaks with weight average molecular weights (<span>(stackrel{-}{{M}_{w}})</span>) of around 1400–2200 Da, suggesting the formation of oligomers. The results were encouraging and are expected to inspire new possibilities to produce bio-based polymeric materials.</p>","PeriodicalId":659,"journal":{"name":"Journal of Polymers and the Environment","volume":null,"pages":null},"PeriodicalIF":5.3,"publicationDate":"2024-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141252653","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}
引用次数: 0
Biodegradation of Lignocellulose-Polyester Composite Films in Freshwater and Seawater Conditions 木质纤维素-聚酯复合薄膜在淡水和海水条件下的生物降解
IF 5.3 3区 工程技术
Journal of Polymers and the Environment Pub Date : 2024-06-04 DOI: 10.1007/s10924-024-03328-z
Erfan Kimiaei, Soojin Kwon, Kristoffer Meinander, Monika Österberg, Nathalie Lavoine, Richard Venditti
{"title":"Biodegradation of Lignocellulose-Polyester Composite Films in Freshwater and Seawater Conditions","authors":"Erfan Kimiaei, Soojin Kwon, Kristoffer Meinander, Monika Österberg, Nathalie Lavoine, Richard Venditti","doi":"10.1007/s10924-024-03328-z","DOIUrl":"https://doi.org/10.1007/s10924-024-03328-z","url":null,"abstract":"<p>Developing biodegradable material alternatives is crucial to address the fossil-based plastic pollution in marine ecosystems. Natural biodegradable polymers like cellulose exhibit potential plastic alternatives. However, their susceptibility to water and moisture poses challenges when blending with hydrophobic polymers. Thus, chemical modification is often required to enhance cellulose dispersion in hydrophobic polymer matrices, which may hinder its inherent biodegradability. In this study, the aquatic biodegradation and degradation mechanisms of lignocellulose-polyester composite films under aerobic conditions were for the first time explored in simulated freshwater and real seawater environments. The composite films were produced by blending cellulose nanofibrils (CNFs) with polycaprolactone (PCL), a hydrophobic polyester, using lignin nanoparticles (LNPs) as an interfacial compatibilizer. The structural and morphological changes of the composite films were studied using Fourier transform infrared (FTIR), X-ray photoelectron spectroscopy (XPS), thermal gravimetric analysis (TGA), and scanning electron microscopy (SEM). Despite the use of LNPs (poorly degradable in aquatic conditions) and the composite films’ hydrophobicity, the presence of up to 25 wt% PCL and 5wt% LNPs did not prevent the composites from achieving &gt; 85% biodegradation within 42 days, in both fresh water and seawater conditions. The incorporation of CNFs increased the water uptake capability of PCL which helped to increase the films’ porosity, in turn enhancing the film degradation process. This study confirmed that hydrophobizing nanocellulose with biodegradable polyesters and LNPs can preserve the nanocellulose’s inherent coveted biodegradability. Hence, this sustainable approach to developing bio-based composites supports responsible material development, disposal, and end-of-life management.</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":"2024-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141252432","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}
引用次数: 0
Synthesis and Characterization of the Novel Nanocomposites Based on Graphene Oxide/PLLA/PEG-PPG/PLCL Hybrids for Mechanical and Biomedical Applications 基于氧化石墨烯/PLLA/PEG-PPG/PLCL 混合材料的新型纳米复合材料的合成与表征--用于机械和生物医学应用
IF 5.3 3区 工程技术
Journal of Polymers and the Environment Pub Date : 2024-06-04 DOI: 10.1007/s10924-024-03327-0
Mohammad Javad Azizli, Hengameh Honarkar, Ehsan Vafa, Somayeh Parham, Katayoon Rezaeeparto, Fatemeh Azizli, Mohammad Reza Kianfar, Mohammad Bagher Zarei, Ali Moahammad Amani, Masoud Mokhtary
{"title":"Synthesis and Characterization of the Novel Nanocomposites Based on Graphene Oxide/PLLA/PEG-PPG/PLCL Hybrids for Mechanical and Biomedical Applications","authors":"Mohammad Javad Azizli, Hengameh Honarkar, Ehsan Vafa, Somayeh Parham, Katayoon Rezaeeparto, Fatemeh Azizli, Mohammad Reza Kianfar, Mohammad Bagher Zarei, Ali Moahammad Amani, Masoud Mokhtary","doi":"10.1007/s10924-024-03327-0","DOIUrl":"https://doi.org/10.1007/s10924-024-03327-0","url":null,"abstract":"<p>In this research, the synthesis of new nanocomposites based on Poly (L-lactic acid)/ poly (L-lactide<i>- ɛ-</i>caprolactone) PLLA/PLCL with a ratio of 90/10 and different amounts of graphene oxide (GO) (0.1-1%) was put on the agenda. The poly (ethylene glycol)-<i>block</i>-poly (propylene glycol), PEG-PPG, as a compatibilizer was used in each compound to increase the compatibility of the two phases. Fourier-transform infrared spectroscopy (FTIR) and X-ray diffraction (XRD) were applied to study the structure of the obtained samples. Also, morphology, mechanical properties, rheological behavior, thermal stability, dynamic mechanical thermal analysis (DMTA), contact angle, and hydro-catalytic degradation were investigated. The results showed that using the GO, and PEG-PPG compatibilizer significantly decreased the average diameter of the dispersed phase of PLCL in the PLLA matrix. In addition, with the increase of GO contents, the mechanical properties, thermal stability contact angle, storage modulus increased, but hydro-catalytic degradation decreased. The results of scanning electron microscope (SEM) and transmission electron microscopy (TEM) approved that the presence of PEG-PPG compatibilizer significantly affects the dispersion of GO in the PLLA/PLCL matrix. So, the synthesized nanocomposite is a good candidate for mechanical and biomedical applications.</p>","PeriodicalId":659,"journal":{"name":"Journal of Polymers and the Environment","volume":null,"pages":null},"PeriodicalIF":5.3,"publicationDate":"2024-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141252541","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}
引用次数: 0
Chitosan-Coated Nanoliposomes: Exploring the Impact on Physicochemical Properties, Stability, Antioxidant Activity, and Molecular Characterization of Chlorella-Peptide Fractions 壳聚糖包衣纳米脂质体:探索对小球藻肽馏分的理化性质、稳定性、抗氧化活性和分子特征的影响
IF 5.3 3区 工程技术
Journal of Polymers and the Environment Pub Date : 2024-06-01 DOI: 10.1007/s10924-024-03313-6
Pouria Gharehbeglou, Khashayar Sarabandi, Zahra Akbarbaglu
{"title":"Chitosan-Coated Nanoliposomes: Exploring the Impact on Physicochemical Properties, Stability, Antioxidant Activity, and Molecular Characterization of Chlorella-Peptide Fractions","authors":"Pouria Gharehbeglou, Khashayar Sarabandi, Zahra Akbarbaglu","doi":"10.1007/s10924-024-03313-6","DOIUrl":"https://doi.org/10.1007/s10924-024-03313-6","url":null,"abstract":"<p>The aim of this study was to characterize and evaluate the antioxidant activity of Chlorella peptide fractions coated with chitosan-modified nanoliposomes. Additionally, the release process of these peptide fractions under simulated gastric and intestinal conditions was evaluated. Protein hydrolysates were obtained from Chlorella through enzymatic hydrolysis, resulting in increased concentrations of antioxidant and hydrophobic amino acids. Peptide fractions were selected and separated based on their molecular weights, and it was observed that the fractions with lower molecular weights (less than 10 kDa, PF-10) contained higher amounts of hydrophobic and antioxidant amino acids. Among the fractions, PF-10 exhibited the highest radical inhibition activity for DPPH and ABTS, as well as enhanced reducing power and chelating activity towards copper ions. PF-10 and PF-30 (peptide fractions with a molecular weight less than 30 kDa) also demonstrated higher inhibition of nitric oxide radicals and total antioxidant activity (TAA) compared to the hydrolyzed form and other fractions. The analysis of physicochemical properties identified PF-10 as the most favorable treatment due to its size, polydispersity index (PDI), zeta potential, and encapsulation efficiency (EE). Coating the nanoliposomes with chitosan resulted in an increase in particle size and PDI but significantly improved the preservation of EE during storage. Chitosan coating also enhanced the activity of DPPH and OH radical scavenging. Fourier-transform infrared spectroscopy (FTIR) confirmed the localization of peptides within the polar regions and the bilayer membrane of nanoliposomes, while scanning electron microscopy (SEM) revealed agglomerated and spherical structures. Overall, our findings highlight the effectiveness of nanoliposomes as carriers for delivering peptide fractions with high antioxidant activity. The formulation of chitosan-coated nanoliposomes as carriers for Chlorella-peptide fractions represents an innovative advancement, providing opportunities for the creation of functional and stable formulations. These formulations hold the potential to provide benefits regarding human health and environmental considerations.</p>","PeriodicalId":659,"journal":{"name":"Journal of Polymers and the Environment","volume":null,"pages":null},"PeriodicalIF":5.3,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141188647","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}
引用次数: 0
Reprocessable Cross-Linked EVA/Silica Nanocomposites with Superior Mechanical Properties via One-Step and Scalable Reactive Blending 通过一步式可扩展反应共混实现具有优异机械性能的可再加工交联 EVA/二氧化硅纳米复合材料
IF 5.3 3区 工程技术
Journal of Polymers and the Environment Pub Date : 2024-06-01 DOI: 10.1007/s10924-024-03306-5
Haixin Nong, Xiaopei Li, Yongjie Zhang
{"title":"Reprocessable Cross-Linked EVA/Silica Nanocomposites with Superior Mechanical Properties via One-Step and Scalable Reactive Blending","authors":"Haixin Nong, Xiaopei Li, Yongjie Zhang","doi":"10.1007/s10924-024-03306-5","DOIUrl":"https://doi.org/10.1007/s10924-024-03306-5","url":null,"abstract":"<p>Organic/inorganic nanocomposites uniquely combine the dual advantages of inorganic nanomaterials and organic polymers. However, poor compatibility between inorganic nanoparticles and polymer matrices always arises as a huge obstacle to be addressed while designing and preparing high performance organic/inorganic nanocomposites. In situ surface grafting of ethylene–vinyl acetate copolymer (EVA) onto nanosilica and partial cross-linking of EVA via dynamic Si–O–C bonds with nanosilica as the core were simultaneously achieved via the transesterification reactions between the inherent Si–OH groups on the surface of nanosilica and the ester groups in EVA. The reactions were conducted thorough a one-step, simple and scalable reactive blending approach. The cross-linking reaction of EVA was evidenced by torque curves, FT-IR spectra and gel fraction testing. Uniform dispersion of silica particles in EVA matrix was observed for resulting EVA/silica nanocomposites due to surface modification of silica. Consequently, tremendous enhancement in mechanical properties of resultant EVA/silica nanocomposites were detected. Compared to the original EVA, the tensile strengths and tensile modulus of the EVA/silica nanocomposites increased by 72.5% and 37.8%, respectively, while the elongation at breaks of the EVA/silica nanocomposites remained as high as that of the original EVA. Additionally, the dynamic nature of Si–O–C cross-linkages enabled partially cross-linked EVA/silica nanocomposites to demonstrate exceptional reprocess ability and recyclability. This was evidenced by the sustained mechanical properties of the EVA/silica nanocomposites, which were still maintained even after undergoing three rounds of reprocessing.</p><h3 data-test=\"abstract-sub-heading\">Graphical Abstract</h3>\u0000","PeriodicalId":659,"journal":{"name":"Journal of Polymers and the Environment","volume":null,"pages":null},"PeriodicalIF":5.3,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141188524","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}
引用次数: 0
Highly Porous 3D Printed Scaffold Incorporated with Graphene Oxide-Merwinite and Coated with IGF1 Loaded Nanofibers for Calvarial Defect Repair 融入氧化石墨烯-麦饭石并涂有 IGF1 负载纳米纤维的高多孔 3D 打印支架用于钙骨缺损修复
IF 5.3 3区 工程技术
Journal of Polymers and the Environment Pub Date : 2024-05-28 DOI: 10.1007/s10924-024-03324-3
Basma Talib Al-Sudani, Saeideh Salehi, Marwa M. Kamil, Mastafa H. Al-Musawi, Hamideh Valizadeh, Marjan Mirhaj, Mohammadjavad Sharifianjazi, Mina Shahriari-Khalaji, Mamoona Sattar, Fariborz Sharifianjazi, Aliakbar Najafinezhad, Hossein Salehi, Mohamadreza Tavakoli
{"title":"Highly Porous 3D Printed Scaffold Incorporated with Graphene Oxide-Merwinite and Coated with IGF1 Loaded Nanofibers for Calvarial Defect Repair","authors":"Basma Talib Al-Sudani, Saeideh Salehi, Marwa M. Kamil, Mastafa H. Al-Musawi, Hamideh Valizadeh, Marjan Mirhaj, Mohammadjavad Sharifianjazi, Mina Shahriari-Khalaji, Mamoona Sattar, Fariborz Sharifianjazi, Aliakbar Najafinezhad, Hossein Salehi, Mohamadreza Tavakoli","doi":"10.1007/s10924-024-03324-3","DOIUrl":"https://doi.org/10.1007/s10924-024-03324-3","url":null,"abstract":"<p>Critical-sized calvarial bone defects remain a significant challenge in orthopedic surgery, especially for irregularly shaped bones. Herein, we devised a customizable scaffold using a combination of 3D-printing and salt leaching techniques. Polycaprolactone (PCL), sodium chloride, and a graphene oxide-merwinite (GOM) nanocomposite were 3D-printed and then immersed in water to remove residual salt. Subsequently, gelatin-based electrospun nanofibers incorporating insulin-like growth factor-1 (IGF1) were applied to the PCL-GOM scaffold. The addition of 15% of GOM nanoparticles to the PCL scaffold increased the compressive strength from 2.2 to 3.8 MPa and the elastic modulus from 17.2 to 29.8 MPa. Apatite precipitates were well formed on the fabricated scaffolds after 28 days of immersion in simulated body fluid. Moreover, the scaffold displayed a gradual release of IGF1 over 28 days. The MTT assay demonstrated non-toxicity of scaffolds towards the MG63 cell line. Interestingly, significantly higher expression of Collagen I, RUNX2, and Osteocalcin were observed in qRTPCR results. Following implantation in calvarial bone defect for 8 weeks, the optimal scaffold demonstrated excellent osteogenic behavior and new bone tissue formation. This work presents a promising biomaterial with potential clinical applications for the treatment of irregular critical-sized bone defects.</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":"141171114","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}
引用次数: 0
Evolution of the Antibacterial and Cellular Viability Effects of Silica-Hydroxyapatite Conjugated High Cerium Oxide Nanoparticles on Orthodontic Brackets 二氧化硅-羟基磷灰石共轭高氧化铈纳米粒子对正畸托槽的抗菌和细胞活力效应的演变
IF 5.3 3区 工程技术
Journal of Polymers and the Environment Pub Date : 2024-05-28 DOI: 10.1007/s10924-024-03325-2
Yanlei Kong, Feilong Zhang, Nan Zhou, Hongyu Zhang, Hao Wang
{"title":"Evolution of the Antibacterial and Cellular Viability Effects of Silica-Hydroxyapatite Conjugated High Cerium Oxide Nanoparticles on Orthodontic Brackets","authors":"Yanlei Kong, Feilong Zhang, Nan Zhou, Hongyu Zhang, Hao Wang","doi":"10.1007/s10924-024-03325-2","DOIUrl":"https://doi.org/10.1007/s10924-024-03325-2","url":null,"abstract":"<p>Nanomaterials have been utilized as antibacterial agents due to their distinct mechanism of action, which sets them apart from traditional antibiotics. Cerium oxide nanoparticles (CeO2 NPs) play a crucial role as antibacterial agents because of their minimal toxicity towards healthy cells and their unique antibacterial mechanism, which involves the reversible transition between two valence states of Ce(III)/Ce(IV). In the current study, silica microspheres (SiO<sub>2</sub>) were applied for the growth of hydroxyapatite (Hap) over the silica surface. Then, the SiO<sub>2</sub>/hydroxyapatite (SiO<sub>2</sub>/Hap) nanocomposite was applied for stabilization of the in <i>situ</i> green synthesized cerium oxide nanoparticles (CeO<sub>2</sub> NPs) on its surface to assess the antibacterial and cellular viability of orthodontic brackets. The as-prepared SiO<sub>2</sub>/Hap-CeO<sub>2</sub> NPs were fully characterized by different techniques such as FT-IR, XRD, FE-SEM, TEM and ICP-OES analyses. The technique employed to coat the orthodontic bands with SiO<sub>2</sub>/Hap-CeO<sub>2</sub> NPs nanocomposite was the electrostatic spray-assisted vapor deposition method. The antibacterial efficacy of SiO<sub>2</sub>/Hap-CeO<sub>2</sub> NPs nanocomposite against <i>Candida albicans</i>, <i>Streptococcus mutans</i> and <i>Lactobacillus acidophilus</i> was evaluated using the biofilm inhibition test. In the recent study’s cellular and molecular component, the treated cells with SiO<sub>2</sub>/Hap-CeO<sub>2</sub> NPs nanocomposite underwent evaluation through MTT assay to determine cytotoxicity on the normal (HUVEC) cell line. In comparison to the control group, the SiO<sub>2</sub>/Hap-CeO<sub>2</sub> NPs nanocomposite group exhibited a 2-log10 decrease in the replication ability of all microorganisms. The group of SiO<sub>2</sub>/Hap-CeO<sub>2</sub> NPs nanocomposite demonstrated a notable decrease in the quantity of <i>C. albicans</i>, <i>S. mutans</i> and <i>L. acidophilus</i> colonies compared to the control group. Application of SiO<sub>2</sub>/Hap-CeO<sub>2</sub> NPs nanocomposite on orthodontic bands resulted in antibacterial properties against oral pathogens.</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":"141171112","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}
引用次数: 0
Degradation Dynamics and Mechanical–Thermal Response of Polylactide/Poly(Propylene Carbonate) Blends: Towards Sustainable Material Design 聚乳酸/聚(碳酸丙烯酯)混合物的降解动力学和机械热响应:实现可持续材料设计
IF 5.3 3区 工程技术
Journal of Polymers and the Environment Pub Date : 2024-05-28 DOI: 10.1007/s10924-024-03319-0
Yujin Kwon, Vishal Gavande, Donghyeok Im, Won-Ki Lee
{"title":"Degradation Dynamics and Mechanical–Thermal Response of Polylactide/Poly(Propylene Carbonate) Blends: Towards Sustainable Material Design","authors":"Yujin Kwon, Vishal Gavande, Donghyeok Im, Won-Ki Lee","doi":"10.1007/s10924-024-03319-0","DOIUrl":"https://doi.org/10.1007/s10924-024-03319-0","url":null,"abstract":"<p>Blending polylactide (PLA) with poly(propylene carbonate) offers potential solution to mitigate the greenhouse effect due to PLA’s lower carbon dioxide (CO<sub>2</sub>) emissions and its use of CO<sub>2</sub> as a monomer in PPC synthesis. In this investigation, a series of PLA and PPC blends were prepared using the solvent casting method to address their respective weaknesses. The blends exhibited partial compatibility, as evidenced by a noticeable shift in the glass transition temperatures toward each other. Tensile testing revealed that the incorporation of PPC improved the elongation properties of PLA. The degradation characteristics of the blend films were evaluated based on changes in the monolayer’s occupied area, the properties of the bulk film, and changes in surface morphology. Results indicated that PPC content accelerated hydrolytic degradation but slowed enzymatic degradation in the blends. Hydrolytic and enzymatic degradation significantly impacted the mechanical properties of PLA/PPC blends, prolonging the degradation process through chain scission.</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":"141171148","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}
引用次数: 0
Highly Tough, Freeze-Resistant, Sensitive, and Recyclable Starch-based Multifunctional Hydrogel Flexible Wearable Sensor for Human Motion Monitoring 用于人体运动监测的高韧性、抗冻性、灵敏性和可回收性淀粉基多功能水凝胶柔性可穿戴传感器
IF 5.3 3区 工程技术
Journal of Polymers and the Environment Pub Date : 2024-05-28 DOI: 10.1007/s10924-024-03321-6
Enyuan Cui, Peng Liu, Jiaozhu Yu, Feihong Li, Xiangyu Li, Yaxin Gu, Yunwu Yu, Changxiu Chen, Shihang Wang, Haojing Zhu, Rui Song
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