Designed Monomers and Polymers最新文献

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Reaction kinetics and properties of MDI base poly (urethane-isocyanurate) network polymers. MDI 基聚(氨基甲酸乙酯-异氰尿酸酯)网络聚合物的反应动力学和特性。
IF 1.6 4区 化学
Designed Monomers and Polymers Pub Date : 2021-08-26 eCollection Date: 2021-01-01 DOI: 10.1080/15685551.2021.1971858
Juan Li, Shengling Jiang, Liang Ding, Lingfang Wang
{"title":"Reaction kinetics and properties of MDI base poly (urethane-isocyanurate) network polymers.","authors":"Juan Li, Shengling Jiang, Liang Ding, Lingfang Wang","doi":"10.1080/15685551.2021.1971858","DOIUrl":"10.1080/15685551.2021.1971858","url":null,"abstract":"<p><p>Since the trimerization of isocyanate occurs easily and controllably to form a clear trifunctional isocyanate ring, this reaction is an ideal candidate for the synthesis of a clear poly(urethane-isocyanurate) network polymer. Poly(urethane-isocyanurate) network polymer (PUI) was prepared from diphenylmethane diisocyanate (MDI) and propylene glycol (PPG) by cyclotrimerization of isocyanate group (NCO). It was proved that the expected product was successfully prepared by NCO determination, fourier transform infrared (FTIR) and gel permeation chromatography (GPC) characterization. The mechanical and thermal properties were characterized. Through the effects of catalyst dosage, polyurethane prepolymer molecular weight, reaction time, reaction temperature and MDI addition on the reaction process, it is determined that under certain other conditions, the step heating method is better for cyclotrimerization reaction. Generally, the better heating conditions are 60 °C/1 h + 80 °C/4 h + 100 °C/2 h + 120 °C/2 h + 140 °C/2 h + 160 °C/2 h. The results of thermogravimetric analysis (TGA) and mechanical properties showed that with the increase of cross-linking points in the polymer structure, the thermal stability, tensile strength, tensile modulus and hardness of PUI increased, while the elongation at break decreased significantly. The glass transition temperature (Tg) of PUI is around 45 °C, and it can be seen that the elastic modulus of the material can range from 58 to 1980 MPa. X-ray diffraction results show that the rubber phase represented by the flexible segment and the plastic phase represented by the rigid structure are amorphous.</p>","PeriodicalId":11170,"journal":{"name":"Designed Monomers and Polymers","volume":"24 1","pages":"265-273"},"PeriodicalIF":1.6,"publicationDate":"2021-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8405120/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39375534","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
Luminescent property and application values of a new Cd(II) compound in tuberculosis treatment and clinical nursing. 一种新型Cd(II)化合物的发光特性及其在结核病治疗和临床护理中的应用价值。
IF 1.6 4区 化学
Designed Monomers and Polymers Pub Date : 2021-08-19 eCollection Date: 2021-01-01 DOI: 10.1080/15685551.2021.1968113
Han-Xiao Tao, Jia-Li Jiang
{"title":"Luminescent property and application values of a new Cd(II) compound in tuberculosis treatment and clinical nursing.","authors":"Han-Xiao Tao,&nbsp;Jia-Li Jiang","doi":"10.1080/15685551.2021.1968113","DOIUrl":"https://doi.org/10.1080/15685551.2021.1968113","url":null,"abstract":"<p><p>Through the reaction between HTrz and Cd(NO<sub>3</sub>)<sub>2</sub> · 4H<sub>2</sub>O, a new Cd(II) compound of [Cd(Trz) <sub>2</sub>] <sub>n</sub> (<b>1</b>, HTrz = 1,2,4-triazole) can be obtained, which has been studied with diffraction analysis by single crystal X-ray as well as powder X-ray diffraction. The structure of <b>1</b> can be stable up to 265°C, and the solid samples of <b>1</b> emit intense blue luminescence at room temperature. Along with the evaluation of tuberculosis treatment and clinical nursing, related mechanism was also studied here. Firstly, ELISA assay was conducted and the IL-10 and IL-18 released into the alveolar lavage fluid was determined. Apart from this, the real-time RT-PCR was used to reflect surviving gene's relative expression of <i>Mycobacterium tuberculosis</i> after compound treatment.</p>","PeriodicalId":11170,"journal":{"name":"Designed Monomers and Polymers","volume":"24 1","pages":"259-264"},"PeriodicalIF":1.6,"publicationDate":"2021-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8381915/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39343796","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
Nanoemulsions as novel nanocarrieres for drug delivery across the skin: In-vitro, in-vivo evaluation of miconazole nanoemulsions for treatment of Candidiasis albicans. 纳米乳剂作为药物通过皮肤传递的新型纳米载体:米康唑纳米乳剂治疗白色念珠菌的体内外评价
IF 1.6 4区 化学
Designed Monomers and Polymers Pub Date : 2021-08-17 eCollection Date: 2021-01-01 DOI: 10.1080/15685551.2021.1965724
Umar Farooq, Akhtar Rasul, Muhammad Zafarullah, Ghulam Abbas, Maria Rasool, Farman Ali, Shabbir Ahmed, Zeeshan Javaid, Zoya Abid, Humayun Riaz, Rana Khalid Mahmood Arshad, Shayan Maryam, Naseem Amna, Kanwal Asif
{"title":"Nanoemulsions as novel nanocarrieres for drug delivery across the skin: In-vitro, in-vivo evaluation of miconazole nanoemulsions for treatment of <i>Candidiasis albicans</i>.","authors":"Umar Farooq,&nbsp;Akhtar Rasul,&nbsp;Muhammad Zafarullah,&nbsp;Ghulam Abbas,&nbsp;Maria Rasool,&nbsp;Farman Ali,&nbsp;Shabbir Ahmed,&nbsp;Zeeshan Javaid,&nbsp;Zoya Abid,&nbsp;Humayun Riaz,&nbsp;Rana Khalid Mahmood Arshad,&nbsp;Shayan Maryam,&nbsp;Naseem Amna,&nbsp;Kanwal Asif","doi":"10.1080/15685551.2021.1965724","DOIUrl":"https://doi.org/10.1080/15685551.2021.1965724","url":null,"abstract":"<p><p>In the current research, attempt is made to fabricate a nanoemulsion (NE) containing an antifungal agent. The prepared formulation has been expected to enhance skin penetration. It is also studied for in vitro drug release and toxicity assessment. Spontaneous titration method was used for preparation of NE. Prepared NE were characterized for their charge, size, morphology, rheological behaviour, drug release profile, skin permeability. The drug permeation and skin irritation were investigated. The in vitro antifungal activity was inspected using the well agar diffusion method. Miconazole NE showed good penetration in the skin as compared to marketed products. SEM showed semispherical shapes of the droplets. Zeta potential and zeta sizer showed that size was in nano ranges having positive charge.</p>","PeriodicalId":11170,"journal":{"name":"Designed Monomers and Polymers","volume":"24 1","pages":"240-258"},"PeriodicalIF":1.6,"publicationDate":"2021-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8382019/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39343795","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: 4
Theoretical studies of optoelectronic and photovoltaic properties of D-A polymer monomers by Density Functional Theory (DFT). 用密度泛函理论(DFT)研究D-A聚合物单体光电和光伏性能。
IF 1.6 4区 化学
Designed Monomers and Polymers Pub Date : 2021-07-27 eCollection Date: 2021-01-01 DOI: 10.1080/15685551.2021.1956209
Numbury Surendra Babu, Said A H Vuai
{"title":"Theoretical studies of optoelectronic and photovoltaic properties of D-A polymer monomers by Density Functional Theory (DFT).","authors":"Numbury Surendra Babu,&nbsp;Said A H Vuai","doi":"10.1080/15685551.2021.1956209","DOIUrl":"https://doi.org/10.1080/15685551.2021.1956209","url":null,"abstract":"<p><p>In this research article, the new donor-acceptor (D-A) monomers developed using 4-methoxy-9-methyl-9 H-carbazole (MMCB) as electron donors and various electron acceptors. DFT and TD-DFT methods at the level of B3LYP with a 6-311 G basis set in a gas and chloroform solvent were used to calculate electronic and optoelectronic properties. To dissect the relationship between the molecular and optoelectronic structures, the impacts of specific acceptors on the geometry of molecules and optoelectronic properties of these D-A monomers were discussed. The calculations are also carried out on HOMO-LUMO, atomic orbital densities. The calculated band gap <i>E</i> <sub><i>g</i></sub> of the monomers considered increases 3,6-MMCB-OCP ≈ 3,6-MMCB-BCO < 3,6-MMCB-SDP < 3,6-MMCB-SCP < 3,6-MMCB-TCP < 3,6-MMCB-TDP < 3,6-MMCB-BCS < 3,6-MMCB-BCT in both in the gas and solvent phases. Subsequently, the optoelectrical properties of <i>E</i> <sub><i>HOMO</i></sub> , <i>E</i> <sub><i>LUMO</i></sub> , <i>E</i> <sub><i>opt</i></sub> , and <i>E</i> <sub><i>B</i></sub> energies were critically updated. Compared to different monomers, the far lower <i>E</i> <sub>g</sub> of the 3,6-MMCB-OCP and 3,6-CB-BCO has shown optoelectronic applications in organic solar cells like BHJ.</p>","PeriodicalId":11170,"journal":{"name":"Designed Monomers and Polymers","volume":"24 1","pages":"224-237"},"PeriodicalIF":1.6,"publicationDate":"2021-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/15685551.2021.1956209","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39292386","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: 2
A luminescent Zn-MOF exhibiting high water stability: selective detection of Cr(VI) ion and treatment activity on sepsis. 具有高水稳定性的发光Zn-MOF:对Cr(VI)离子的选择性检测和对败血症的治疗活性。
IF 1.6 4区 化学
Designed Monomers and Polymers Pub Date : 2021-07-27 eCollection Date: 2021-01-01 DOI: 10.1080/15685551.2021.1953239
Ying Wan, Xu-Mei Chen, Qian Zhang, Hong-Biao Jiang, Ran Feng
{"title":"A luminescent Zn-MOF exhibiting high water stability: selective detection of Cr(VI) ion and treatment activity on sepsis.","authors":"Ying Wan,&nbsp;Xu-Mei Chen,&nbsp;Qian Zhang,&nbsp;Hong-Biao Jiang,&nbsp;Ran Feng","doi":"10.1080/15685551.2021.1953239","DOIUrl":"https://doi.org/10.1080/15685551.2021.1953239","url":null,"abstract":"ABSTRACT A fresh metal-organic framework (MOF) based on the Zn ions as the metal ions has been prepared via the solvothermal method, and its chemical formula is [Zn(byia)(DMF)]·1.5DMF·7H2O (1, byia =  5-(benzimidazol-2-yl) isophthalic acid). It is worth noting that the compound 1 has excellent water stability (which can be maintained in the water for at least a month). Most fascinating, in water, the compound 1 exhibits the strong blue luminescence, which can only be selectively quenched via the contaminant of the Cr2O7 2– ion. The selective luminescence quenching with low limits of detection and high values of K sv proved its better sensing property, which can be compared with the contemporary materials. To development new strategy for the sepsis treatment, the biological activity and mechanism of the compound was explored. Firstly, the ELIA detection was performed in this experiment to assess the inhibition of compound against inflammatory factor storm during sepsis. Then, the inflammatory response in the immune cells was assessed by real time RT-PCR.","PeriodicalId":11170,"journal":{"name":"Designed Monomers and Polymers","volume":"24 1","pages":"216-223"},"PeriodicalIF":1.6,"publicationDate":"2021-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/15685551.2021.1953239","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39292385","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: 4
Preparation and properties of rigid polyurethane foams added with graphene oxide-hollow glass microspheres hybrid. 氧化石墨烯-中空玻璃微球杂化硬质聚氨酯泡沫的制备及性能研究。
IF 1.6 4区 化学
Designed Monomers and Polymers Pub Date : 2021-07-14 eCollection Date: 2021-01-01 DOI: 10.1080/15685551.2021.1954340
Dong Liu, Longqing Zou, Qianqian Chang, Tianyuan Xiao
{"title":"Preparation and properties of rigid polyurethane foams added with graphene oxide-hollow glass microspheres hybrid.","authors":"Dong Liu,&nbsp;Longqing Zou,&nbsp;Qianqian Chang,&nbsp;Tianyuan Xiao","doi":"10.1080/15685551.2021.1954340","DOIUrl":"https://doi.org/10.1080/15685551.2021.1954340","url":null,"abstract":"<p><p>Rigid polyurethane foam (RPUF) as a filling material that can enhance the crashworthiness of thin-walled tubes. GO-HGMS hybrid was prepared by solution blending of graphene oxide (GO) and hollow glass microspheres (HGMS). The effect of the composite on the compression properties of RPUF was investigated. The GO-HGMS hybrid was characterized by fourier transform infrared spectroscopy (FTIR), x-ray diffraction(XRD), and scanning electron microscopy (SEM). The compression test and microstructure results show that the best compression performance and the largest apparent density of the composite foam were obtained when the hybrid content was 4 wt %. In addition, the compression test results of empty tubes (ET) and foam-filled tubes (FFT) under lateral load indicate that the combination of lightweight foamed material and thin-walled tube improves the stability of thin-walled tube deformation and the ability of the structure to resist deformation. GO-HGMS/RPUF as the filling material of thin-walled tube structure greatly improves the bearing capacity and energy absorption level of ET.</p>","PeriodicalId":11170,"journal":{"name":"Designed Monomers and Polymers","volume":"24 1","pages":"208-215"},"PeriodicalIF":1.6,"publicationDate":"2021-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/15685551.2021.1954340","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39274553","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: 3
Preparation parameters of polyaniline/polyvinyl chloride flexible wires for electrical conductivity performance analysis based on orthogonal arrays. 基于正交阵列的聚苯胺/聚氯乙烯软线制备参数及其导电性能分析
IF 1.6 4区 化学
Designed Monomers and Polymers Pub Date : 2021-06-28 eCollection Date: 2021-01-01 DOI: 10.1080/15685551.2021.1936373
Wu Xuelian, Jiang Jiang, Yang Jian, Feng Qin, Wang Zhifeng
{"title":"Preparation parameters of polyaniline/polyvinyl chloride flexible wires for electrical conductivity performance analysis based on orthogonal arrays.","authors":"Wu Xuelian,&nbsp;Jiang Jiang,&nbsp;Yang Jian,&nbsp;Feng Qin,&nbsp;Wang Zhifeng","doi":"10.1080/15685551.2021.1936373","DOIUrl":"https://doi.org/10.1080/15685551.2021.1936373","url":null,"abstract":"<p><p>A flexible polyaniline/polyvinyl chloride (PVC) polymer conductive wire was prepared using flexible PVC polymer as the substrate by the swelling - in-situ polymerization method, the line-shaped dents were pressed on the substrate by the thermodynamic pre-deformation treatment technology. Based on the orthogonal test method, the effects of five main influencing factors - swelling time (A), swelling temperature (B), oxidation temperature (C), oxidation time (D), and oxidant concentration (E) - on the conductivity of the prepared polyaniline/PVC conductive wire was investigated. The results of the orthogonal array testing were subjected to range analysis and analysis of variance (ANOVA), and the influencing factors, in terms of significance, follow the order of swelling temperature, oxidation time, swelling time, oxidation temperature, and oxidant concentration, with the optimal factor-level combination being A<sub>2</sub>B<sub>2</sub>C<sub>2</sub>D<sub>2</sub>E<sub>2</sub>, which led to a desirable conductivity up to 1.19 × 10<sup>-1</sup> S/cm. In addition, the influence of different conductive line size characteristics on the molecular structure, microstructure, and conductivity of polyaniline/PVC flexible conductive wire was further studied. On the microstructure, as the line width increases, the infrared absorption intensity ratio of the quinone ring and the benzene ring in the polyaniline/PVC conductive wires gradually approaches 1. The microstructure, as the line width of the polyaniline/PVC conductive wire increases, the formed polyaniline gradually changes from flakes and granules to fibrous strips and entangles with each other to form a spatial network structure. The conductivity of the wire increases with the increase of its width up to 1.48 × 10<sup>-1</sup> S/cm.</p>","PeriodicalId":11170,"journal":{"name":"Designed Monomers and Polymers","volume":"24 1","pages":"191-198"},"PeriodicalIF":1.6,"publicationDate":"2021-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/15685551.2021.1936373","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39173539","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
Two Co(II) coordination polymers: magnetic properties and application values against chronic subdural hematoma. 两种Co(II)配位聚合物:磁性和对慢性硬膜下血肿的应用价值。
IF 1.6 4区 化学
Designed Monomers and Polymers Pub Date : 2021-06-28 eCollection Date: 2021-01-01 DOI: 10.1080/15685551.2021.1935535
Jing-Sen Chen, Sheng-Long Cao, Hai-Ying Hu, Juan Shen, Yu-Jun Qi
{"title":"Two Co(II) coordination polymers: magnetic properties and application values against chronic subdural hematoma.","authors":"Jing-Sen Chen,&nbsp;Sheng-Long Cao,&nbsp;Hai-Ying Hu,&nbsp;Juan Shen,&nbsp;Yu-Jun Qi","doi":"10.1080/15685551.2021.1935535","DOIUrl":"https://doi.org/10.1080/15685551.2021.1935535","url":null,"abstract":"<p><p>In this current experiment, by applying the mixed-ligand synthesis method, two coordination polymers (CPs) containing Co(II) were created triumphantly with reaction between 1,3-bis(1-imidazoly)benzene (mbib) and Co(II) salts with the aid of diverse carboxylic ligands, and their chemical formulae are [Co<sub>3</sub>(opda)<sub>3</sub>(mbib)<sub>4</sub>(H<sub>2</sub>O)<sub>4</sub>]·2H<sub>2</sub>O (<b>1</b>, H<sub>2</sub>opda is 1,2-phenylenediacetic acid) and [Co(mpda)(mbib)]·H<sub>2</sub>O (<b>2</b>, H<sub>2</sub>mpda is 1,3-phenylenediacetic acid). The two compounds' magnetic performances suggest that between the adjacent metal ions, there present the antiferromagnetic coupling. The evaluation of their treatment activity against chronic subdural hematoma was carried out and the relevant mechanism was studied simultaneously. Firstly, before the treatment of compound, the chronic subdural hematoma was generated. Furthermore, the enzyme-linked immunosorbent assay detection kit was implemented and in hematoma capsule, the anti-inflammatory cytokines level and pro-inflammatory cytokines level was detected. Additionally, the cytotoxicity of compounds <b>1</b> and <b>2</b> on the normal human cells was determined with Cell Counting Kit-8 assay. Above all, we proved compound <b>1</b> decreased the pro-inflammatory cytokines content and increased the anti-inflammatory cytokines content in the hematoma capsule, which is much stronger than that of compound <b>2</b>. Both compounds <b>1</b> and <b>2</b> showed no cytotoxicity on the normal human cells.</p>","PeriodicalId":11170,"journal":{"name":"Designed Monomers and Polymers","volume":"24 1","pages":"199-207"},"PeriodicalIF":1.6,"publicationDate":"2021-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/15685551.2021.1935535","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39173540","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
Preparation and Characterization of Carborane Modified Liquid Fluoroelastomers and the investigation of their properties. 碳硼烷改性液体氟弹性体的制备、表征及性能研究。
IF 1.6 4区 化学
Designed Monomers and Polymers Pub Date : 2021-06-21 DOI: 10.1080/15685551.2021.1935014
Juan Li
{"title":"Preparation and Characterization of Carborane Modified Liquid Fluoroelastomers and the investigation of their properties.","authors":"Juan Li","doi":"10.1080/15685551.2021.1935014","DOIUrl":"https://doi.org/10.1080/15685551.2021.1935014","url":null,"abstract":"<p><p>The preparation of liquid fluoroelastomers that are liquid with excellent mechanical properties remains a challenge. Here, we show a very straightforward method to produce liquid fluoroelastomers by introducing carborane. Carborane-terminated liquid fluoropolymer was synthesized by Steglich reaction of carboxyl-terminated liquid fluoropolymer and 1,7-bis (hydroxy)-carborane. The product is brown, viscous at room temperature and in the semi-solid state. On this basis, HDI Trimer was used as a curing agent to cure liquid fluoroelastomer. Thermogravimetric analysis of the cured products was carried out. The carbon residue rate of the cured product increased from 35% to 58% of the cured product. The results show that the addition of carborane structure can effectively improve the carbon residue rate of liquid fluoroelastomer. The tensile strength, elongation and shore hardness of the cured product were also examined, and the results show that the tensile strength of carborane modified liquid fluorine increased by 463% compared with that before modification, but the elongation at break was reduced by 42%, which was mainly due to the introduction of rigid structure of carborane. At the same time, the solvent resistance test results show that the introduction of carborane structure has little effect on the aviation kerosene resistance and organic solvent resistance of fluororubber, but it can improve its alkali resistance.</p>","PeriodicalId":11170,"journal":{"name":"Designed Monomers and Polymers","volume":"24 1","pages":"182-190"},"PeriodicalIF":1.6,"publicationDate":"2021-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/15685551.2021.1935014","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39139420","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: 1
A new trinuclear cluster-based Cd(II) compound: photocatalytic property and nursing application values on the bacterial infection. 一种新的三核团簇镉(II)化合物:光催化特性及对细菌感染的护理应用价值。
IF 1.6 4区 化学
Designed Monomers and Polymers Pub Date : 2021-05-31 DOI: 10.1080/15685551.2021.1935010
Yan Hu, Jiao Ni
{"title":"A new trinuclear cluster-based Cd(II) compound: photocatalytic property and nursing application values on the bacterial infection.","authors":"Yan Hu, Jiao Ni","doi":"10.1080/15685551.2021.1935010","DOIUrl":"10.1080/15685551.2021.1935010","url":null,"abstract":"<p><p>A new Cd(II) coordination polymer with the formula of {[(CH<sub>3</sub>)<sub>2</sub>NH<sub>2</sub>][Cd<sub>3</sub>(NH<sub>2</sub>-bdc)<sub>3</sub>(btz)(H<sub>2</sub>O)]} <sub><i>n</i></sub> (<b>1</b> NH<sub>2</sub>-H<sub>2</sub>bdc = 2-aminoterephthalic acid, Hbtz = 1 H-benzotriazole) was produced and then it was structurally characterized through powder X-ray diffraction (PXRD), the analysis of X-ray single-crystal diffraction, along with elemental analysis (EA). The photocatalytic property investigations indicate that compound <b>1</b> exhibits good activity for photodegradation of methyl violet (MV) with 60.7% of MV removal in 40 min under room temperature. Furthermore, the assessment of the compound's treatment activity and nursing application values on the bacterial infection was conducted and its corresponding mechanism was also studied. Evaluation of the in vitro hemolysis of the compound was determined by measuring the degree of red blood cell lysis and hemoglobin release. The effect of new compounds on the relative proliferation rate of L-929 cells was measured by MTT assay. The ELISA detection kit showed that the compound could reduce the TNF-α and IL-1β content released into plasma. Next, the inhibitory activity of the compound on the bacterial survival gene expression was also proved with real-time RT-PCR. The hemolysis rate of the new compound to blood is 3.4%, which is less than the standard 5%, which is non-hemolytic reaction. The compound also has no obvious cytotoxicity and has good cell compatibility.</p>","PeriodicalId":11170,"journal":{"name":"Designed Monomers and Polymers","volume":"24 1","pages":"173-181"},"PeriodicalIF":1.6,"publicationDate":"2021-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8168771/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39074070","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
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