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Hot Topics in Macromolecular Science 大分子科学热点话题

Macromol Pub Date : 2021-06-23 DOI: 10.3390/macromol1030013

A. Díez-Pascual

引用次数: 1

Chitosan Adsorbent Derivatives for Pharmaceuticals Removal from Effluents: A Review 壳聚糖吸附剂衍生物用于废水中药物的去除研究进展

Macromol Pub Date : 2021-05-11 DOI: 10.3390/MACROMOL1020011

Efstathios V Liakos, Maria-Filothei Lazaridou, G. Michailidou, I. Koumentakou, D. Lambropoulou, D. Bikiaris, G. Kyzas

{"title":"Chitosan Adsorbent Derivatives for Pharmaceuticals Removal from Effluents: A Review","authors":"Efstathios V Liakos, Maria-Filothei Lazaridou, G. Michailidou, I. Koumentakou, D. Lambropoulou, D. Bikiaris, G. Kyzas","doi":"10.3390/MACROMOL1020011","DOIUrl":"https://doi.org/10.3390/MACROMOL1020011","url":null,"abstract":"Chitin is mentioned as the second most abundant and important natural biopolymer in worldwide scale. The main sources for the extraction and exploitation of this natural polysaccharide polymer are crabs and shrimps. Chitosan (poly-β-(1 → 4)-2-amino-2-deoxy-d-glucose) is the most important derivative of chitin and can be used in a wide variety of applications including cosmetics, pharmaceutical and biomedical applications, food, etc., giving this substance high value-added applications. Moreover, chitosan has applications in adsorption because it contains amino and hydroxyl groups in its molecules, and can thus contribute to many possible adsorption interactions between chitosan and pollutants (pharmaceuticals/drugs, metals, phenols, pesticides, etc.). However, it must be noted that one of the most important techniques of decontamination is considered to be adsorption because it is simple, low-cost, and fast. This review emphasizes on recently published research papers (2013–2021) and briefly describes the chemical modifications of chitosan (grafting, cross-linking, etc.), for the adsorption of a variety of emerging contaminants from aqueous solutions, and characterization results. Finally, tables are depicted from selected chitosan synthetic routes and the pH effects are discussed, along with the best-fitting isotherm and kinetic models.","PeriodicalId":18139,"journal":{"name":"Macromol","volume":"90 1","pages":"130-154"},"PeriodicalIF":0.0,"publicationDate":"2021-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74480462","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 18

Effect of the Croton rhamnifolioides Essential Oil and the Inclusion Complex (OEFC/β-CD) in Antinociceptive Animal Models 巴豆鼠李糖叶精油及包合物(OEFC/β-CD)在抗伤害性动物模型中的作用

Macromol Pub Date : 2021-04-06 DOI: 10.3390/MACROMOL1020008

Anita Oliveira Brito Pereira Bezerra Martins, Maria Rayane Correia de Oliveira, I. S. Alcântara, Lindaiane Bezerra Rodrigues, Francisco Rafael Alves Santana Cesário, Maria Sanádia Alexandre da Silva, F. Castro, E. P. Nascimento, T. R. Albuquerque, L. Q. Quintans Júnior, A. Araújo, H. Coutinho, I. A. Menezes, A. Wanderley

{"title":"Effect of the Croton rhamnifolioides Essential Oil and the Inclusion Complex (OEFC/β-CD) in Antinociceptive Animal Models","authors":"Anita Oliveira Brito Pereira Bezerra Martins, Maria Rayane Correia de Oliveira, I. S. Alcântara, Lindaiane Bezerra Rodrigues, Francisco Rafael Alves Santana Cesário, Maria Sanádia Alexandre da Silva, F. Castro, E. P. Nascimento, T. R. Albuquerque, L. Q. Quintans Júnior, A. Araújo, H. Coutinho, I. A. Menezes, A. Wanderley","doi":"10.3390/MACROMOL1020008","DOIUrl":"https://doi.org/10.3390/MACROMOL1020008","url":null,"abstract":"This study aims to evaluate the antinociceptive effect of the C. rhamnifolioides leaf essential oil (OEFC) and the β-cyclodextrin inclusion complex (COEFC) and investigate the pain signaling pathways involved in the antinociceptive response. The effects of the OEFC and COEFC on the central nervous system (CNS) were determined by open field and rota-rod assays, and the antinociceptive effect was evaluated via the acetic acid-induced abdominal contortions, formalin, and hot plate models. Swiss (Mus musculus) male mice (20–30 g) were used in both trials. The OEFC (200 mg/kg/v.o-orally) and COEFC (83.5 mg/kg/v.o.) did not present alterations in the CNS. The OEFC (25, 50, 100, and 200 mg/kg/vo.) and COEFC (8.35, 41.75, and 83.5 mg/kg/v.o.) demonstrated antinociceptive effects in the abdominal contortions, formalin, and hot plate tests. The OEFC (25 mg/kg/v.o.) and COEFC (8.35 mg/kg/v.o.) doses showed that the antinociceptive effect involves the activation of the opioid, cholinergic, and vanilloid systems, as well as the L-arginine/NO and α-2 adrenergic receptor pathways. The antinociceptive potential the OEFC and COEFC demonstrate possible alternatives for the therapy of pain. However, the COEFC presented more significant effects at lower doses than the isolated OEFC, where this action may be justified by the properties and advantages of the complexation.","PeriodicalId":18139,"journal":{"name":"Macromol","volume":"1 1","pages":"94-111"},"PeriodicalIF":0.0,"publicationDate":"2021-04-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82952397","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Polymer-Derived Nitrogen-Doped Carbon Nanosheet Cluster and Its Application for Water Purification 聚合物衍生的氮掺杂碳纳米片簇及其在水净化中的应用

Macromol Pub Date : 2021-04-02 DOI: 10.3390/MACROMOL1020007

Xiaoyan Yu, Ting Zheng, S. Pilla

引用次数: 1

Iminopyridine Ni(II) Catalysts Affording Oily Hyperbranched Ethylene Oligomers and/or Crystalline Polyethylenes Depending on the Reaction Conditions: Possible Role of In Situ Catalyst Structure Modifications 亚氨基吡啶镍(II)催化剂根据反应条件产生油性超支化乙烯低聚物和/或结晶聚乙烯:原位催化剂结构修饰的可能作用

Macromol Pub Date : 2021-03-24 DOI: 10.3390/MACROMOL1020010

I. D’Auria, Z. Saki, C. Pellecchia

{"title":"Iminopyridine Ni(II) Catalysts Affording Oily Hyperbranched Ethylene Oligomers and/or Crystalline Polyethylenes Depending on the Reaction Conditions: Possible Role of In Situ Catalyst Structure Modifications","authors":"I. D’Auria, Z. Saki, C. Pellecchia","doi":"10.3390/MACROMOL1020010","DOIUrl":"https://doi.org/10.3390/MACROMOL1020010","url":null,"abstract":"Nickel-based ethylene polymerization catalysts have unique features, being able to produce macromolecules with a variable content of branches, resulting in polymers ranging from semicrystalline plastics to elastomers to hyperbranched amorphous waxes and oils. In addition to Brookhart’s α-diimine catalysts, iminopyridine Ni(II) complexes are among the most investigated systems. We report that Ni(II) complexes bearing aryliminopyridine ligands with bulky substituents both at the imino moiety and in the 6-position of pyridine afford either hyperbranched low molecular weight polyethylene oils or prevailingly linear crystalline polyethylenes or both, depending on the ligand structure and the reaction conditions. The formation of multiple active species in situ is suggested by analysis of the post-polymerization catalyst residues, showing the partial reduction of the imino function. Some related arylaminopyridine Ni(II) complexes were also synthesized and tested, showing a peculiar behavior, i.e., the number of branches of the produced polyethylenes increases while ethylene pressure increases.","PeriodicalId":18139,"journal":{"name":"Macromol","volume":"35 1","pages":"121-129"},"PeriodicalIF":0.0,"publicationDate":"2021-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76485512","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

Bottom-Up Development of Nanoimprinted PLLA Composite Films with Enhanced Antibacterial Properties for Smart Packaging Applications 面向智能包装应用的抗菌性能增强的纳米印迹PLLA复合薄膜的自下而上开发

Macromol Pub Date : 2021-03-11 DOI: 10.3390/MACROMOL1010005

Eleni Psochia, L. Papadopoulos, Dimitrios Gkiliopoulos, A. Francone, Maria-Eirini Grigora, D. Tzetzis, J. V. de Castro, N. Neves, K. Triantafyllidis, C. Torres, N. Kehagias, D. Bikiaris

{"title":"Bottom-Up Development of Nanoimprinted PLLA Composite Films with Enhanced Antibacterial Properties for Smart Packaging Applications","authors":"Eleni Psochia, L. Papadopoulos, Dimitrios Gkiliopoulos, A. Francone, Maria-Eirini Grigora, D. Tzetzis, J. V. de Castro, N. Neves, K. Triantafyllidis, C. Torres, N. Kehagias, D. Bikiaris","doi":"10.3390/MACROMOL1010005","DOIUrl":"https://doi.org/10.3390/MACROMOL1010005","url":null,"abstract":"In this work, polymer nanocomposite films based on poly(L-lactic acid) (PLLA) were reinforced with mesoporous silica nanoparticles, mesoporous cellular foam (MCF) and Santa Barbara amorphous-15 (SBA). PLLA is a biobased aliphatic polyester, that possesses excellent thermomechanical properties, and has already been commercialized for packaging applications. The aim was to utilize nanoparticles that have already been established as nanocarriers to enhance the mechanical and thermal properties of PLLA. Since the introduction of antibacterial properties has become an emerging trend in packaging applications, to achieve an effective antimicrobial activity, micro/nano 3D micropillars decorated with cone- and needle-shaped nanostructures were implemented on the surface of the films by means of thermal nanoimprint lithography (t-NIL), a novel and feasible fabrication technique with multiple industrial applications. The materials were characterized regarding their composition and crystallinity using Fourier transform infrared spectroscopy (FT-IR) and X-ray diffraction (XRD), respectively, and their thermal properties using differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA). Their mechanical properties were examined by the nanoindentation technique, while the films’ antimicrobial activity against the bacteria Escherichia coli and Staphylococcus aureus strains was tested in vitro. The results demonstrated the successful production of nanocomposite PLLA films, which exhibited improved mechanical and thermal properties compared to the pristine material, as well as notable antibacterial activity, setting new groundwork for the potential development of biobased smart packaging materials.","PeriodicalId":18139,"journal":{"name":"Macromol","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83112685","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 14

Inter- and Intra-Hydrogen Bonding Strategy to Control the Fluorescence of Acylhydrazone-Based Conjugated Microporous Polymers and Their Application to Nitroaromatics Detection 控制酰基腙基共轭微孔聚合物荧光的氢键间和氢键内策略及其在硝基芳烃检测中的应用

Macromol Pub Date : 2021-01-01 DOI: 10.3390/macromol1030016

Inhwan Cha, Seohyun Baek, Sun Gu Song, Junggong Kim, H. Lee, Jongman Lee, Kyung-su Kim, Changsik Song

{"title":"Inter- and Intra-Hydrogen Bonding Strategy to Control the Fluorescence of Acylhydrazone-Based Conjugated Microporous Polymers and Their Application to Nitroaromatics Detection","authors":"Inhwan Cha, Seohyun Baek, Sun Gu Song, Junggong Kim, H. Lee, Jongman Lee, Kyung-su Kim, Changsik Song","doi":"10.3390/macromol1030016","DOIUrl":"https://doi.org/10.3390/macromol1030016","url":null,"abstract":"Acylhydrazone-based fluorescent conjugated microporous polymers (CMPs) with inter-and intra-hydrogen bonding-controlled emissive properties were prepared. The synthesized CMPs (BH-CMP and ABH-CMP) were characterized by Fourier-transform infrared spectroscopy, X-ray diffraction, solid-state 13C cross polarization/magic angle spinning nuclear magnetic resonance spectroscopy, and photoluminescence spectroscopy. Interestingly, BH-CMP exhibited emission enhancement via adsorption of water molecules, whereas the emission of ABH-CMP, which possesses free amine groups, decreased upon the addition of water molecules. The differences in the emission trends of BH-CMP and ABH-CMP in the presence of water molecules originate from the formation of different hydrogen-bonding networks in each CMP. The acylhydrazone-based CMPs were applied to the detection of nitroaromatic compounds. As a result, ABH-CMP in DMF exhibited high selectivity for 1,3,5-trinitrotoluene (TNT) over other nitroaromatic compounds nitrobenzene, 1-chloro-4-nitrobenzene, 2,3-dichloronitrobenzene, and 2,4-dinitrotoluene.","PeriodicalId":18139,"journal":{"name":"Macromol","volume":"32 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77024234","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Polyethylene Oxide Hydrogels Crosslinked by Peroxide for the Controlled Release of Proteins 过氧化氢交联的聚氧化物水凝胶控制蛋白质的释放

Macromol Pub Date : 2020-12-22 DOI: 10.3390/macromol1010004

A. Papagiannopoulos, E. Vlassi, S. Pispas, C. Tsitsilianis, A. Radulescu

引用次数: 5

A Brief Overview on Preparation of Self-Healing Polymers and Coatings via Hydrogen Bonding Interactions 利用氢键相互作用制备自愈聚合物和涂层的研究进展

Macromol Pub Date : 2020-12-22 DOI: 10.3390/macromol1010003

Ikhlas Gadwal

引用次数: 25

Neat Linear Polysiloxane-Based Ionic Polymers: Insights into Structure-Based Property Modifications and Applications 整齐线性聚硅氧烷基离子聚合物:基于结构的性质修改和应用的见解

Macromol Pub Date : 2020-12-21 DOI: 10.3390/macromol1010002

L. Poon, Jacob R. Hum, R. Weiss

引用次数: 8