Pub Date : 2017-12-01DOI: 10.1142/S2251237317920010
C. Wong, A. Dolzhenko, Sui-Mae Lee, D. Young
{"title":"Erratum:\" Cyclodextrins: A Weapon in the Fight Against Antimicrobial Resistance\"","authors":"C. Wong, A. Dolzhenko, Sui-Mae Lee, D. Young","doi":"10.1142/S2251237317920010","DOIUrl":"https://doi.org/10.1142/S2251237317920010","url":null,"abstract":"","PeriodicalId":16406,"journal":{"name":"Journal of Molecular and Engineering Materials","volume":"05 1","pages":"1792001"},"PeriodicalIF":1.5,"publicationDate":"2017-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1142/S2251237317920010","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43972487","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}
Pub Date : 2017-12-01DOI: 10.1142/S2251237317400081
A. Niitsuma, A. Shinya, Sakura Shiratori, Soichi Kuroda, Minori Hatta, H. Gomi
This study evaluated the effects of filling technique and light irradiation distance on the push-out bond strength of dual-cured (DC) and light-cured (LC) core materials to the root canal dentin. D...
{"title":"Effects of Filling Technique and Light Irradiation Distance on the Push-Out Bond Strength of Dual and Light Cured Core Materials in a Direct Core Build-Up","authors":"A. Niitsuma, A. Shinya, Sakura Shiratori, Soichi Kuroda, Minori Hatta, H. Gomi","doi":"10.1142/S2251237317400081","DOIUrl":"https://doi.org/10.1142/S2251237317400081","url":null,"abstract":"This study evaluated the effects of filling technique and light irradiation distance on the push-out bond strength of dual-cured (DC) and light-cured (LC) core materials to the root canal dentin. D...","PeriodicalId":16406,"journal":{"name":"Journal of Molecular and Engineering Materials","volume":"05 1","pages":"1740008"},"PeriodicalIF":1.5,"publicationDate":"2017-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1142/S2251237317400081","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46815234","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}
Pub Date : 2017-12-01DOI: 10.1142/S2251237317500137
A. Karim, E. Tan, X. Loh
Vitamin C (L-ascorbic acid) has been widely used in dermatological and cosmetic formulations primarily as an antioxidant owing to its excellent electron-donating ability. This property also makes it highly reactive and therefore degradation is unavoidable in the presence of reactive species. Polymers have been used for encapsulation purposes as micelles vesicles or gels.11–19 A water-soluble polymer, polyvinyl alcohol (PVA) has been investigated as one of the polymeric materials for encapsulation. In cosmetic formulations, PVA is used as emulsion stabilizer, forming protective films, viscosity increasing agent, or a binder. This study used PVA to encapsulate Vitamin C in an attempt to slow down the rate of degradation and therefore preserve the bioactivity of Vitamin C. PVA of varying molecular weights and concentrations were used and the PVA-Vitamin C solutions were subjected to different temperature over seven days. UV and NMR analyses were performed to support the study. It was shown that PVA of Mw 79....
{"title":"Encapsulation of Vitamin C with its Protection from Oxidation by Poly(Vinyl Alcohol)","authors":"A. Karim, E. Tan, X. Loh","doi":"10.1142/S2251237317500137","DOIUrl":"https://doi.org/10.1142/S2251237317500137","url":null,"abstract":"Vitamin C (L-ascorbic acid) has been widely used in dermatological and cosmetic formulations primarily as an antioxidant owing to its excellent electron-donating ability. This property also makes it highly reactive and therefore degradation is unavoidable in the presence of reactive species. Polymers have been used for encapsulation purposes as micelles vesicles or gels.11–19 A water-soluble polymer, polyvinyl alcohol (PVA) has been investigated as one of the polymeric materials for encapsulation. In cosmetic formulations, PVA is used as emulsion stabilizer, forming protective films, viscosity increasing agent, or a binder. This study used PVA to encapsulate Vitamin C in an attempt to slow down the rate of degradation and therefore preserve the bioactivity of Vitamin C. PVA of varying molecular weights and concentrations were used and the PVA-Vitamin C solutions were subjected to different temperature over seven days. UV and NMR analyses were performed to support the study. It was shown that PVA of Mw 79....","PeriodicalId":16406,"journal":{"name":"Journal of Molecular and Engineering Materials","volume":"05 1","pages":"1750013"},"PeriodicalIF":1.5,"publicationDate":"2017-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1142/S2251237317500137","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48020476","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}
Pub Date : 2017-12-01DOI: 10.1142/S2251237317500125
Ahlam Zekaik, Hadj Benhebal, B. Benrabah, Aziza Chibout, N. Tayebi, Abdelmalek Kharroubi, A. Ammari, Cherifa Dalache
This work presents an experimental study dedicated to the synthesis and characterization of pure and Ni-doped chromium (III) oxide thin films. Sol–gel thin films with doping rates of 3%, 6%, 9%, an...
{"title":"Sol–Gel Synthesis of Nickel-Doped Cr2O3 Thin Films","authors":"Ahlam Zekaik, Hadj Benhebal, B. Benrabah, Aziza Chibout, N. Tayebi, Abdelmalek Kharroubi, A. Ammari, Cherifa Dalache","doi":"10.1142/S2251237317500125","DOIUrl":"https://doi.org/10.1142/S2251237317500125","url":null,"abstract":"This work presents an experimental study dedicated to the synthesis and characterization of pure and Ni-doped chromium (III) oxide thin films. Sol–gel thin films with doping rates of 3%, 6%, 9%, an...","PeriodicalId":16406,"journal":{"name":"Journal of Molecular and Engineering Materials","volume":"05 1","pages":"1750012"},"PeriodicalIF":1.5,"publicationDate":"2017-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1142/S2251237317500125","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47819729","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}
Pub Date : 2017-11-13DOI: 10.1142/S225123731740007X
A. Khan, Adel Zia Siddiqui, J. Syed, M. Elsharawy, A. M. Alghamdi, J. Matinlinna
This study was aimed at evaluating the effect of E-glass fibers (≈1.0mm long, o=0.017mm with 1.0wt.% and 5.0wt.%) in two (MegacemTM and GlassFillTM) glass-ionomer cements (GIC) to enhance their mec...
{"title":"Effect of Short E-Glass Fiber Reinforcement on Surface and Mechanical Properties of Glass-Ionomer Cements","authors":"A. Khan, Adel Zia Siddiqui, J. Syed, M. Elsharawy, A. M. Alghamdi, J. Matinlinna","doi":"10.1142/S225123731740007X","DOIUrl":"https://doi.org/10.1142/S225123731740007X","url":null,"abstract":"This study was aimed at evaluating the effect of E-glass fibers (≈1.0mm long, o=0.017mm with 1.0wt.% and 5.0wt.%) in two (MegacemTM and GlassFillTM) glass-ionomer cements (GIC) to enhance their mec...","PeriodicalId":16406,"journal":{"name":"Journal of Molecular and Engineering Materials","volume":"05 1","pages":"1740007"},"PeriodicalIF":1.5,"publicationDate":"2017-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1142/S225123731740007X","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43525349","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}
Pub Date : 2017-09-21DOI: 10.1142/S2251237317500071
A. A. Aal, S. Kahraman
Marble has been widely used as building materials since ancient times. Abrasion resistance and slake durability are the important characteristics of marbles. The prediction of these marbles properties will be useful from indirect methods especially for preliminary studies. In this study, the predictability of the Bohme abrasion resistance (BA) and the slake durability (SDI) of marbles were investigated from the indirect methods such as point load index (IS50), Shore hardness index (SHI), impact strength index (ISI), and ultrasonic velocity (Vp). The evaluation of the test results showed that the SDI were correlated well to the Vp, and moderately correlated to the IS50. But, the SDI was correlated weakly to both the ISI and SHI values. On the other hand, all indirect tests values were strongly or very strongly correlated to the BA values. Some multiple regression equations were also derived for the estimation of the SDI and the BA. It can be concluded that the SDI of the tested and similar marbles can be predicted from the Vp, and IS50 values. The correlations between the SDI and both SHI and ISI values should be further investigated. Another conclusion is that dry Vp, ISI, SHI and IS50 values can be used for the prediction of the BA values of the tested and similar marbles.
{"title":"Indirect Methods to Predict the Abrasion Resistance and Slake Durability of Marbles","authors":"A. A. Aal, S. Kahraman","doi":"10.1142/S2251237317500071","DOIUrl":"https://doi.org/10.1142/S2251237317500071","url":null,"abstract":"Marble has been widely used as building materials since ancient times. Abrasion resistance and slake durability are the important characteristics of marbles. The prediction of these marbles properties will be useful from indirect methods especially for preliminary studies. In this study, the predictability of the Bohme abrasion resistance (BA) and the slake durability (SDI) of marbles were investigated from the indirect methods such as point load index (IS50), Shore hardness index (SHI), impact strength index (ISI), and ultrasonic velocity (Vp). The evaluation of the test results showed that the SDI were correlated well to the Vp, and moderately correlated to the IS50. But, the SDI was correlated weakly to both the ISI and SHI values. On the other hand, all indirect tests values were strongly or very strongly correlated to the BA values. Some multiple regression equations were also derived for the estimation of the SDI and the BA. It can be concluded that the SDI of the tested and similar marbles can be predicted from the Vp, and IS50 values. The correlations between the SDI and both SHI and ISI values should be further investigated. Another conclusion is that dry Vp, ISI, SHI and IS50 values can be used for the prediction of the BA values of the tested and similar marbles.","PeriodicalId":16406,"journal":{"name":"Journal of Molecular and Engineering Materials","volume":"05 1","pages":"1750007"},"PeriodicalIF":1.5,"publicationDate":"2017-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1142/S2251237317500071","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"63850406","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}
Pub Date : 2017-09-01DOI: 10.1142/S2251237317500101
Arkadeb Mukhopadhyay, T. Barman, P. Sahoo
The present study considers the tribological behavior and corrosion resistance of electroless Ni-B-W coatings deposited on AISI 1040 steel substrates. Coating is characterized using scanning electr...
{"title":"Tribological Behavior and Corrosion Resistance of Electroless Ni-B-W Coatings","authors":"Arkadeb Mukhopadhyay, T. Barman, P. Sahoo","doi":"10.1142/S2251237317500101","DOIUrl":"https://doi.org/10.1142/S2251237317500101","url":null,"abstract":"The present study considers the tribological behavior and corrosion resistance of electroless Ni-B-W coatings deposited on AISI 1040 steel substrates. Coating is characterized using scanning electr...","PeriodicalId":16406,"journal":{"name":"Journal of Molecular and Engineering Materials","volume":"05 1","pages":"1750010"},"PeriodicalIF":1.5,"publicationDate":"2017-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1142/S2251237317500101","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41547379","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}
Pub Date : 2017-09-01DOI: 10.1142/S2251237317500113
Subharanjan Biswas, L. P. Datta, Soumyajit Roy
An inexpensive, facile, and environmentally benign method has been developed for the preparation of stimuli-responsive and self-healing polyacrylic acid–chitosan-based supramolecular hydrogels. Gua...
{"title":"A Stimuli-Responsive Supramolecular Hydrogel for Controlled Release of Drug","authors":"Subharanjan Biswas, L. P. Datta, Soumyajit Roy","doi":"10.1142/S2251237317500113","DOIUrl":"https://doi.org/10.1142/S2251237317500113","url":null,"abstract":"An inexpensive, facile, and environmentally benign method has been developed for the preparation of stimuli-responsive and self-healing polyacrylic acid–chitosan-based supramolecular hydrogels. Gua...","PeriodicalId":16406,"journal":{"name":"Journal of Molecular and Engineering Materials","volume":"05 1","pages":"1750011"},"PeriodicalIF":1.5,"publicationDate":"2017-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1142/S2251237317500113","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43816638","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}
Pub Date : 2017-09-01DOI: 10.1142/S2251237317500095
Teck Lip Dexter Tam, Tingting Lin, Steven Lukman
The ability to understand and predict excited state photophysics is vital for the development of photo- and electroluminescence materials, as well as light harvesting materials and photodynamic the...
理解和预测激发态光物理的能力对于光和电致发光材料、光捕获材料和光动力材料的发展至关重要。。。
{"title":"Understanding the Excited State Photophysics of Pyrrolopyrrole-Dione Isomers and Derivatives Using Time-Dependence Density Functional Theory","authors":"Teck Lip Dexter Tam, Tingting Lin, Steven Lukman","doi":"10.1142/S2251237317500095","DOIUrl":"https://doi.org/10.1142/S2251237317500095","url":null,"abstract":"The ability to understand and predict excited state photophysics is vital for the development of photo- and electroluminescence materials, as well as light harvesting materials and photodynamic the...","PeriodicalId":16406,"journal":{"name":"Journal of Molecular and Engineering Materials","volume":"05 1","pages":"1750009"},"PeriodicalIF":1.5,"publicationDate":"2017-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1142/S2251237317500095","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44233040","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}
Pub Date : 2017-07-28DOI: 10.1142/S2251237317500058
Xingxing Chen, Weiqi Zhou, Zhe Chen, Lei Yao
In order to investigate the effect of the incorporated nanoparticles on the photocatalytic property of the hybrid membranes, the uncovered and covered polysulfone/TiO2 hybrid membranes were prepared. Positron annihilation γ-ray spectroscopy coupled with a positron beam was utilized to examine the depth profiles of the two membranes. The photocatalytic activities of the membranes were evaluated by the degradation of Rhodamine B (RhB) aqueous solution under the irradiation of Xe lamp. UV-Vis spectroscopy was applied to study the UV transmission through the polysulfone layer. Electrochemical impedance spectroscopy was used to detect the photo-generated charges by the covered membrane during the irradiation. It can be found that UV light can penetrate through the covered layer (about 230nm), and the incorporated nanoparticles can still generate charges under irradiation, which endows the photocatalytic ability of the covered membrane.
{"title":"Study of the Photocatalytic Property of Polysulfone Membrane Incorporating TiO2 Nanoparticles","authors":"Xingxing Chen, Weiqi Zhou, Zhe Chen, Lei Yao","doi":"10.1142/S2251237317500058","DOIUrl":"https://doi.org/10.1142/S2251237317500058","url":null,"abstract":"In order to investigate the effect of the incorporated nanoparticles on the photocatalytic property of the hybrid membranes, the uncovered and covered polysulfone/TiO2 hybrid membranes were prepared. Positron annihilation γ-ray spectroscopy coupled with a positron beam was utilized to examine the depth profiles of the two membranes. The photocatalytic activities of the membranes were evaluated by the degradation of Rhodamine B (RhB) aqueous solution under the irradiation of Xe lamp. UV-Vis spectroscopy was applied to study the UV transmission through the polysulfone layer. Electrochemical impedance spectroscopy was used to detect the photo-generated charges by the covered membrane during the irradiation. It can be found that UV light can penetrate through the covered layer (about 230nm), and the incorporated nanoparticles can still generate charges under irradiation, which endows the photocatalytic ability of the covered membrane.","PeriodicalId":16406,"journal":{"name":"Journal of Molecular and Engineering Materials","volume":"05 1","pages":"1750005"},"PeriodicalIF":1.5,"publicationDate":"2017-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1142/S2251237317500058","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48220617","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}
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