Designed Monomers and Polymers最新文献_第8页

Theoretical design of low bandgap donor-acceptor (D-A) monomers for polymer solar cells: DFT and TD-DFT study. 聚合物太阳能电池低带隙给受体(D-A)单体的理论设计:DFT和TD-DFT研究。

IF 1.6 4区化学

Designed Monomers and Polymers Pub Date : 2021-05-05 DOI: 10.1080/15685551.2021.1921923

Said A H Vuai, Numbury Surendra Babu

引用次数: 2

Bioinspired double self-adhesion coating based on dopamine, coating resin and phosphorylcholine for surface lubrication and antifouling functionalization. 基于多巴胺、涂层树脂和磷胆碱的仿生双自粘涂层，用于表面润滑和防污功能化。

IF 1.6 4区化学

Designed Monomers and Polymers Pub Date : 2021-04-22 DOI: 10.1080/15685551.2021.1919389

Qipeng Li, Qiuxiang Yin, Baohong Hou, Ling Zhou

{"title":"Bioinspired double self-adhesion coating based on dopamine, coating resin and phosphorylcholine for surface lubrication and antifouling functionalization.","authors":"Qipeng Li, Qiuxiang Yin, Baohong Hou, Ling Zhou","doi":"10.1080/15685551.2021.1919389","DOIUrl":"10.1080/15685551.2021.1919389","url":null,"abstract":"Implanted medical devices that have poor friction property or biofilm formation can limit their service life and cause discomfort in patients. Recently, some zwitterionic coatings have been studied to modify the biomaterials surface for lubricating function, but the grafting methods of coatings are complicated and also seldom take the bacterial antiadhesion property into account at the same time. In our studies, motivated by the properties of nature mussels and human articular, we firstly successfully synthesized double adhesion protection of self-adhesive ternary polymer coating and achieved the excellent lubrication and antifouling functionalization of the medical devices surface. In details, the X-ray photoelectron spectroscopy, scanning electron microscope and the water contact angles could characterize the successful modification on the surface of titanium substrate. Additionally, the tribological tests carried out by atomic force microscope verified the ternary polymer could enhance the lubrication property owing to the hydration lubrication mechanism. Meanwhile, it also possessed the bacterial antiadhesion property for the initial 24 h attributed to the hydration repulsive force. We believe that, as a simple and universal preparation method, the ternary polymer could make a great significance for improving the surface function of biomaterials and alleviating patients' discomfort.","PeriodicalId":11170,"journal":{"name":"Designed Monomers and Polymers","volume":"24 1","pages":"106-112"},"PeriodicalIF":1.6,"publicationDate":"2021-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/15685551.2021.1919389","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"38964649","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Reduction-sensitive N, N'-Bis(acryloyl) cystinamide-polymerized Nanohydrogel as a Potential Nanocarrier for Paclitaxel Delivery. 对还原敏感的 N,N'-双（丙烯酰）胱氨酰胺聚合纳米水凝胶作为紫杉醇递送的潜在纳米载体

IF 1.6 4区化学

Designed Monomers and Polymers Pub Date : 2021-04-18 DOI: 10.1080/15685551.2021.1914398

Linna Yu, Lingping Kong, Junpeng Xie, Wei Wang, Chen Chang, Hongli Che, Mingzhe Liu

{"title":"Reduction-sensitive N, N'-Bis(acryloyl) cystinamide-polymerized Nanohydrogel as a Potential Nanocarrier for Paclitaxel Delivery.","authors":"Linna Yu, Lingping Kong, Junpeng Xie, Wei Wang, Chen Chang, Hongli Che, Mingzhe Liu","doi":"10.1080/15685551.2021.1914398","DOIUrl":"10.1080/15685551.2021.1914398","url":null,"abstract":"Novel monomer, N, N'-bis(acryloyl) cystinamide (NBACA), was designed and synthesized with L-cystine as row material. By using this NBACA both as the monomer and crosslinker, reduction-sensitive nanohydrogel was prepared in ethanol via distillation-precipitation polymerization. The obtained nanohydrogel can provide a relatively hydrophobic environment and hydrogen-bonding sites inside the gel; therefore, it is suitable for loading hydrophobic drug. When paclitaxel that possess poor water-solubility was used as a model drug, the nanohydrogel represented a high drug-loading capacity, and dispersed well in aqueous solutions. Furthermore, the disulfide-group-containing nanohydrogel exhibited good reduction-sensitive drug-release behavior. The nanohydrogel biodegraded rapidly in a reducing environment, and released approximately 80% of the PTX within 24 h. Cytotoxicity assays showed that the PTX-loaded nanohydrogel exhibited high cytotoxicity against MCF-7 breast cancer cells, while blank nanohydrogels displayed a negligible cytotoxicity.","PeriodicalId":11170,"journal":{"name":"Designed Monomers and Polymers","volume":"24 1","pages":"98-105"},"PeriodicalIF":1.6,"publicationDate":"2021-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/d1/78/TDMP_24_1914398.PMC8079002.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"38964648","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Ring-opening polymerization of ε-caprolactone initiated by tin(II) octoate/n-hexanol: DSC isoconversional kinetics analysis and polymer synthesis. 八酸锡/正己醇引发ε-己内酯开环聚合:DSC等转化动力学分析及聚合物合成

IF 1.6 4区化学

Designed Monomers and Polymers Pub Date : 2021-04-11 DOI: 10.1080/15685551.2021.1908657

Winita Punyodom, Wanich Limwanich, Puttinan Meepowpan, Boontharika Thapsukhon

{"title":"Ring-opening polymerization of ε-caprolactone initiated by tin(II) octoate/n-hexanol: DSC isoconversional kinetics analysis and polymer synthesis.","authors":"Winita Punyodom, Wanich Limwanich, Puttinan Meepowpan, Boontharika Thapsukhon","doi":"10.1080/15685551.2021.1908657","DOIUrl":"https://doi.org/10.1080/15685551.2021.1908657","url":null,"abstract":"The kinetics of ring-opening polymerization (ROP) of ε-caprolactone (ε-CL) initiated by 1.0, 1.5 and 2.0 mol% of stannous(II) octoate/n-hexanol (Sn(Oct)2/n-HexOH) wase successfully studied by non-isothermal differential scanning calorimetry (DSC) at heating rates of 5, 10, 15 and 20 °C/min. The DSC polymerization kinetic parameters of ε-CL were calculated using differential (Friedman) and integral isoconversional methods (Kissinger-Akahira-Sunose, KAS). The average activation energy (Ea ) values obtained from Friedman and KAS methods were in the range of 64.9-70.5 kJ/mol and 64.9-80.4 kJ/mol, respectively. The values of frequency factor (A) were determined from model fitting method using Avrami-Erofeev reaction model. The average values of A for the ROP of ε-CL initiated by 1.0, 1.5 and 2.0 mol% of Sn(Oct)2/n-HexOH (1:2) were 7.3x107, 2.8x106 and 1.2x106 min-1, respectively. From kinetics studied, the polymerization rate of ε-CL increased with increasing initiator concentration. The performance of Sn(Oct)2/n-HexOH in the synthesis of poly(ε-caprolactone) (PCL) was investigated by bulk polymerization at temperatures of 140, 160 and 180 °C. Sn(Oct)2/n-HexOH (1:2) could produce high number average molecular weight ( <math> <mover> <mrow><msub><mi>M</mi> <mrow><mrow><mi>n</mi></mrow> </mrow> </msub> </mrow> <mo>‾</mo></mover> </math> = 9.0 × 104 g/mol) and %yield (89%) of PCL in a short period of time at Sn(Oct)2 concentration of 0.1 mol% and temperature of 160°C. The mechanism of the ROP of ε-CL with Sn(Oct)2/n-HexOH was proposed through the coordination-insertion mechanism.","PeriodicalId":11170,"journal":{"name":"Designed Monomers and Polymers","volume":"24 1","pages":"89-97"},"PeriodicalIF":1.6,"publicationDate":"2021-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/15685551.2021.1908657","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"38899750","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 6

Study on diffusion mechanism and failure behavior of epoxy coatings focusing on synergistic effect of temperature and water molecules. 基于温度和水分子协同效应的环氧涂料扩散机理和失效行为研究。

IF 1.6 4区化学

Designed Monomers and Polymers Pub Date : 2021-03-29 DOI: 10.1080/15685551.2021.1904581

Chao Yang, Qing Han, Anquan Wang, Wei Han, Liang Sun, Laishun Yang

{"title":"Study on diffusion mechanism and failure behavior of epoxy coatings focusing on synergistic effect of temperature and water molecules.","authors":"Chao Yang, Qing Han, Anquan Wang, Wei Han, Liang Sun, Laishun Yang","doi":"10.1080/15685551.2021.1904581","DOIUrl":"https://doi.org/10.1080/15685551.2021.1904581","url":null,"abstract":"The research on the diffusion of water in coatings has been a hot topic in many fields, such as chemistry, coating structure and hydrogen bonding. In this paper, DGEBA epoxy coating was used as a sample to explore the diffusion process of 3 wt.% NaCl solution at different temperatures. Two-stage diffusion was established by immersion experiment and MD simulation. The synergistic effect of temperature and water on DGEBA properties was revealed by FTIR method and adsorption-desorption cyclic testing. The results showed that as the temperature increased, the saturation water content in coatings increased. At different temperatures, the diffusion process of water presented two-phase characteristics, and the influence of temperature on the diffusion process was mainly manifested in the cross-linking density at higher locations. Based on the variation law of swelling coefficient in per unit time (24 h), the conditions for water-coating interaction and formation of water clusters in this paper were proposed. The synergistic effect of water and temperature on DGEBA properties was reflected in two aspects: at lower temperature (20 °C), water would only change the physical structure of the coatings, while the water broke the DGEBA chains at higher temperature (60 °C).","PeriodicalId":11170,"journal":{"name":"Designed Monomers and Polymers","volume":"24 1","pages":"73-88"},"PeriodicalIF":1.6,"publicationDate":"2021-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/15685551.2021.1904581","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"25569065","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 5

Synthesis of antibacterial polyether biguanide curing agent and its cured antibacterial epoxy resin. 抗菌聚醚双胍固化剂及其固化抗菌环氧树脂的合成。

IF 1.6 4区化学

Designed Monomers and Polymers Pub Date : 2021-03-18 DOI: 10.1080/15685551.2021.1900025

Rui Li, Guoxing Yang, Yudan Wang, Lijia Liu, Qiang Wang, Guan Wang, Xiao Ouyang

{"title":"Synthesis of antibacterial polyether biguanide curing agent and its cured antibacterial epoxy resin.","authors":"Rui Li, Guoxing Yang, Yudan Wang, Lijia Liu, Qiang Wang, Guan Wang, Xiao Ouyang","doi":"10.1080/15685551.2021.1900025","DOIUrl":"10.1080/15685551.2021.1900025","url":null,"abstract":"At present, bacteria continue to threaten human health, and the resistance of bacteria to antibiotics continues to increase, so the development of new antibacterial agents and antibacterial materials is increasingly important to ensure human health. In this paper, three polyether biguanide compounds with high antibacterial properties were synthesized by reacting polyetheramine T403 with o-tolylbiguanide, m-tolylbiguanide and p-tolylbiguanide (o-TTB, m-TTB and p-TTB), respectively. The antimicrobial performance of polyether biguanide against E. coli and S. aureus was evaluated using a minimum inhibitory concentration method, and the results showed that the synthesized polyether biguanide exhibited efficient and broad-spectrum antimicrobial effects. Among them, o-tolyl biguanide derivative o-TTB showed the best antimicrobial performance, with minimum inhibitory concentrations of 20 and 15 μg/mL against E. coli and S. aureus, respectively. Then, epoxy resin E51 was cured using the obtained TTB as a curing agent to prepare an epoxy resin with antibacterial properties. The inhibition of the growth of S. aureus by the cured o-TTB/E51 resin was investigated by incubating the cured epoxy resin with bacteria, and the results showed that the cured resin had a significant inhibitory effect on the growth of bacteria. The non-isothermal curing kinetics of the o-TTB/E51 system were investigated by differential scanning calorimetry (DSC) to determine the optimized curing reaction temperature, curing kinetic parameters and curing kinetics equation.","PeriodicalId":11170,"journal":{"name":"Designed Monomers and Polymers","volume":"24 1","pages":"63-72"},"PeriodicalIF":1.6,"publicationDate":"2021-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/ff/f1/TDMP_24_1900025.PMC7993382.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"25539867","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effect of doped H, Br, Cu, Kr, Ge, As and Fe on structural features and bandgap of poly C13H8OS-X: a DFT calculation. 掺杂 H、Br、Cu、Kr、Ge、As 和 Fe 对聚 C13H8OS-X 结构特征和带隙的影响：DFT 计算。

IF 1.6 4区化学

Designed Monomers and Polymers Pub Date : 2021-02-02 DOI: 10.1080/15685551.2021.1877431

Trung Vu Quoc, La Trieu Duong, Van Duong Quoc, Tuan Tran Quoc, Dung Nguyen Trong, Stefan Talu

{"title":"Effect of doped H, Br, Cu, Kr, Ge, As and Fe on structural features and bandgap of poly C13H8OS-X: a DFT calculation.","authors":"Trung Vu Quoc, La Trieu Duong, Van Duong Quoc, Tuan Tran Quoc, Dung Nguyen Trong, Stefan Talu","doi":"10.1080/15685551.2021.1877431","DOIUrl":"10.1080/15685551.2021.1877431","url":null,"abstract":"Structural features such as the shape, the lattice constant, the bond length, the total energy per cell, and the energy bandgap (Eg) of C13H8OS-X are studied by the calculating Partial Density Of States (PDOS), and DOS package of the Material Studio (MS) software. Calculations show that the bond length and the bond angle between atoms insignificant change as 1.316 Å to 1.514 Å for C-C, 1.211 Å for C-O, 1.077 Å to 1.105 Å for C-H; bond angle of round one changes from 118.883° to 121.107° for C-C-C, from 117.199° to 122.635° for H-C-C, from 119.554° to 123.147° for C-C-O and from 109.956° to 117.537° for C-C-H. When C13H8OS-X doped in the order of -Br, -Cu, -Kr, -Ge, -As, and -Fe then bond lengths, bond angles between atoms have a nearly constant value. Particularly for links C-X, there is a huge change in value, respectively 1.876, 1.909, 10.675, 2.025, 2.016, 2.014 Å; the total energy change from Etot = -121,794 eV to Etot = -202,859 eV, and the energy band gap decreases from Eg = 2.001 eV to Eg = 0.915 eV. The obtained results are useful and serve as a basis for future experimental research.","PeriodicalId":11170,"journal":{"name":"Designed Monomers and Polymers","volume":"24 1","pages":"53-62"},"PeriodicalIF":1.6,"publicationDate":"2021-02-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7872542/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"25426298","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Flame retardant and smoke-suppressant rigid polyurethane foam based on sodium alginate and aluminum diethylphosphite. 基于海藻酸钠和二乙基亚磷酸铝的阻燃和抑烟硬质聚氨酯泡沫。

IF 1.6 4区化学

Designed Monomers and Polymers Pub Date : 2021-01-31 DOI: 10.1080/15685551.2021.1879451

Wei Zhang, Zidong Zhao, Yun Lei

引用次数: 15

Nanocomposites containing titanium dioxide for environmental remediation. 环境修复用二氧化钛纳米复合材料。

IF 1.6 4区化学

Designed Monomers and Polymers Pub Date : 2021-01-20 DOI: 10.1080/15685551.2021.1876322

Soad Z Alsheheri

引用次数: 7

Synthesis and ethylene polymerization reaction of dendritic titanium catalysts. 枝晶钛催化剂的合成及乙烯聚合反应。

IF 1.6 4区化学

Designed Monomers and Polymers Pub Date : 2021-01-18 DOI: 10.1080/15685551.2020.1868666

Tianyu Lan, Liduo Chen, Na Zhang, Jun Wang

{"title":"Synthesis and ethylene polymerization reaction of dendritic titanium catalysts.","authors":"Tianyu Lan, Liduo Chen, Na Zhang, Jun Wang","doi":"10.1080/15685551.2020.1868666","DOIUrl":"https://doi.org/10.1080/15685551.2020.1868666","url":null,"abstract":"The 1.0 G dendrimer (C22H48N10O4),3,5-di-tert-butylsalicylaldehyde and TiCl4 · 2THF were used as the synthetic materials, and the dendritic salicylaldehyde imide ligand with substituent hindrance and its titanium catalyst were synthesized by the condensation reaction of schiff base. The structure of the synthesized products was characterized by infrared spectroscopy, nuclear magnetic resonance hydrogen spectroscopy, ultraviolet spectroscopy, electrospray mass spectrometry, and inductively coupled plasma mass spectrometry, The actual structure is consistent with the theoretical design structure. Activated methylaluminoxane (MAO) was used as a catalyst precursor for ethylene polymerization in the process of ethylene catalytic. The effects of ethylene polymerization were studied in terms of the Al/Ti molar ratio, reaction time, reaction temperature, polymerization pressure, and ligand structure of the catalyst. The results show at the reaction temperature of 25°C, the reaction time was 30 min, and the ethylene pressure was 1.0 MPa and Al/Ti was 1,000, the catalytic activity can reach 78.56 kg PE/(mol Ti.h). Furthermore, high-temperature GPC-IR, DSC, and torque rheometer were used to characterized the microstructure, thermal properties, and viscoelastic state of polyethylene samples obtained. The results showed that the product was ultra-high-molecular-weight polyethylene.","PeriodicalId":11170,"journal":{"name":"Designed Monomers and Polymers","volume":"24 1","pages":"13-21"},"PeriodicalIF":1.6,"publicationDate":"2021-01-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/15685551.2020.1868666","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"25329137","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0