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1. Correction: Machine-learning-assisted screening of pure-silica zeolites for effective removal of linear siloxanes and derivatives

Author:
Lin, Shiru; Wang, Yekun; Zhao, Yinghe; Pericchi, Luis R.; Hernández-Maldonado, Arturo J.; Chen, Zhongfang
Source:
Journal of materials chemistry A 2020 v.8 no.13 pp. 6372-6374
ISSN:
2050-7496
Subject:
siloxanes,   etc   ; chemistry; screening; zeolites;     Show all 4 Subjects
Abstract:
... Correction for ‘Machine-learning-assisted screening of pure-silica zeolites for effective removal of linear siloxanes and derivatives’ by Shiru Lin et al., J. Mater. Chem. A, 2020, 8, 3228–3237. ...
DOI:
10.1039/d0ta90062a

2. Enhanced Dielectric Properties of a Poly(dimethyl siloxane) Bimodal Network Percolative Composite with MXene

Author:
Wei, Lei; Wang, Jing-Wen; Gao, Xin-Hua; Wang, Hou-Qing; Wang, Xin-Zhu; Ren, Hua
Source:
ACS applied materials & interfaces 2020 v.12 no.14 pp. 16805-16814
ISSN:
1944-8252
Subject:
siloxanes,   etc   ; capacitors; crosslinking; dielectric properties; models;     Show all 5 Subjects
Abstract:
... Excellent comprehensive dielectric properties (including dielectric constant and loss) are essential for electromechanical transducers. This work introduced a bimodal network composite with poly(dimethyl siloxane) (PDMS) and delaminated Ti₃C₂Tₓ sheets (d-Ti₃C₂Tₓ) modified with hyperbranched polysiloxane (HPSi) (referred to as HPSi-d-Ti₃C₂Tₓ). Before the final cross-linking, HPSi-d-Ti₃C₂Tₓ, trapped ...
DOI:
10.1021/acsami.0c01409

3. Correction: The selective hydrosilylation of norbornadiene-2,5 by monohydrosiloxanes

Author:
Guseva, Marina A.; Alentiev, Dmitry A.; Bermesheva, Evgeniya V.; Zamilatskov, Ilya A.; Bermeshev, Maxim V.
Source:
RSC advances 2019 v.9 no.60 pp. 35145
ISSN:
2046-2069
Subject:
siloxanes,   etc   ; chemical bonding;     Show all 2 Subject
Abstract:
... Correction for ‘The selective hydrosilylation of norbornadiene-2,5 by monohydrosiloxanes’ by Marina A. Guseva et al., RSC Adv., 2019, 9, 33029–33037. ...
DOI:
10.1039/c9ra90079a

4. A catalyst- and additive-free synthesis of alkoxyhydrosiloxanes from silanols and alkoxyhydrosilanes

Author:
Satoh, Yasushi; Fuchise, Keita; Nozawa, Takeshi; Sato, Kazuhiko; Igarashi, Masayasu
Source:
Chemical communications 2020 v.56 no.59 pp. 8218-8221
ISSN:
1364-548X
Subject:
siloxanes,   etc   ; catalysts; catalytic activity; chemical reactions; dealcoholization; platinum; silicon; zinc;     Show all 8 Subjects
Abstract:
... A convenient method for the selective synthesis of alkoxyhydrosiloxanes that bear SiH and SiOR² groups on the same silicon atom, R¹₃Si–O–SiR³₂₋ₙ(OR²)ₙH (n = 0, 1, or 2), via a simple catalyst- and additive-free dealcoholization reaction between silanols and alkoxyhydrosilanes has been developed. These alkoxyhydrosiloxanes can be easily converted into Si(OR²)₃-containing siloxanes by zinc catalyzed ...
DOI:
10.1039/d0cc03379k

5. Fabrication of nacre-like polymer/clay nanocomposites with water-resistant and self-adhesion properties

Author:
Sung, Kyungmo; Nakagawa, Shintaro; Kim, Chaehoon; Yoshie, Naoko
Source:
Journal of colloid and interface science 2020 v.564 pp. 113-123
ISSN:
0021-9797
Subject:
siloxanes,   etc   ; clay; hydrophilicity; hydrophobicity; mechanical properties; moieties; montmorillonite; nanocomposites; surfactants;     Show all 9 Subjects
Abstract:
... Nacre-like polymer/clay nanocomposites are a fascinating material thanks to its superior mechanical property. However, it has been a great challenge to incorporate hydrophobic polymer components due to highly hydrophilic nature of clay, which limits further improvement of water-resistance and addition of various functionalities. To overcome this problem, we developed a method to form regular nacre ...
DOI:
10.1016/j.jcis.2019.12.100

6. Comment on “Bioaccumulation of Methyl Siloxanes in Common Carp (Cyprinus carpio) and in an Estuarine Food Web in Northeastern China”

Author:
Kim, Jaeshin; Woodburn, Kent; Coady, Katie; Xu, Shihe; Durham, Jeremy; Seston, Rita
Source:
Archives of environmental contamination and toxicology 2020 v.78 no.2 pp. 163-173
ISSN:
0090-4341
Subject:
siloxanes,   etc   ; Cyprinus carpio; bioaccumulation factor; estuaries; trophic levels; China;     Show all 6 Subjects
Abstract:
... We have reviewed a paper titled “Bioaccumulation of Methyl Siloxanes in Common Carp (Cyprinus carpio) and in an Estuarine Food Web in Northeastern China” by Xue et al., which was published in the Archives of Environmental Contamination and Toxicology in 2019. In the paper, the authors presented and discussed the measured bioconcentration factors (BCFs), biomagnification factors (BMFs), and trophic ...
DOI:
10.1007/s00244-019-00681-2
PubMed:
31838554
PubMed Central:
PMC6987058

7. Polyether-modified siloxane stabilized dispersion system on the physical stability and control release of double (W/O/W) emulsions

Author:
Lin, Chao; Debeli, Dereje Kebebew; Gan, Liang; Deng, Jianjun; Hu, Liuyun; Shan, Guorong
Source:
Food chemistry 2020 v.332 pp. 127381
ISSN:
0308-8146
Subject:
siloxanes,   etc   ; droplets; emulsions; global positioning systems; magnesium; oil-water interface; polysorbates; sodium caseinate; storage quality;     Show all 9 Subjects
Abstract:
... In this work, three different polyether-modified siloxanes (PMS1, PMS2, and PMS3) were applied to stabilize water-in-oil emulsions, and sodium caseinate (SC) was used to establish water-in-oil-in-water (W/O/W) emulsions. Here, PMS polymers were modified by Isolan GPS and SC by Tween 80. The impact of modifications on the physical stability and controlled release of W/O/W emulsions were investigate ...
DOI:
10.1016/j.foodchem.2020.127381

8. Thermoplastic multifunctional polysiloxane-based materials from broad gradient-transition multiphase separation

Author:
Fan, Jianfeng; Huang, Jiarong; Yan, Mengwen; Gong, Zhou; Cao, Liming; Chen, Yukun
Source:
Journal of materials chemistry A 2020 v.8 no.32 pp. 16376-16384
ISSN:
2050-7496
Subject:
siloxanes,   etc   ; chemical interactions; crosslinking; deformation; energy; entropy; glass transition temperature; medical equipment; thermoplastics;     Show all 9 Subjects
Abstract:
... The current work demonstrates broad gradient-transition multiphase separation for thermoplastic polysiloxane-based polymers, featuring mechanical robustness, shape memory property and healing-ability. Conventional thermoplastic elastomers are generally fabricated by embedding hard nanodomains as physical crosslinks into a soft matrix. However, it is difficult to achieve shape-memory capability in ...
DOI:
10.1039/d0ta05725h

9. Purification of wastewater digester biogas from siloxanes via adsorption-desorption with NaOH-reformed SiO2 adsorbent

Author:
Jung, Hyounduk; Jurng, Jongsoo
Source:
Renewable energy 2020 v.156 pp. 459-468
ISSN:
0960-1481
Subject:
siloxanes,   etc   ; adsorbents; adsorption; biogas; hydrogen bonding; silica gel; sodium hydroxide; temperature; thermogravimetry; wastewater;     Show all 10 Subjects
Abstract:
... This study was performed in order to investigate the adsorption of siloxane for biogas treatment using a novel SiO₂-based adsorbent and its regeneration. The siloxane adsorption capacity of the NaOH-modified SiO₂ was significantly increased. At low temperature (25–50 °C), the siloxane (D5) adsorption capacity of the novel SiO₂ adsorbent was 200 mg per g of adsorbent, which is approximately four ti ...
DOI:
10.1016/j.renene.2020.03.189

10. A Brønsted acidic, ionic liquid containing, heteropolyacid functionalized polysiloxane network as a highly selective catalyst for the esterification of dicarboxylic acids

Author:
Rajabi, Fatemeh; Wilhelm, Christian; Thiel, Werner R.
Source:
Green chemistry 2020 v.22 no.14 pp. 4438-4444
ISSN:
1463-9270
Subject:
siloxanes,   etc   ; catalysts; dicarboxylic acids; esterification; green chemistry; ionic liquids; phosphotungstic acid; sulfonates; zwitterions;     Show all 9 Subjects
Abstract:
... A Brønsted acidic, ionic liquid containing, heteropolyanion functionalized polysiloxane network was formed by self-condensation of dodecatungstophosphoric acid and a zwitterionic organosilane precursor containing both imidazolinium and sulfonate groups. The resulting hybrid material POS-HPA-IL was investigated as a catalyst for the selective esterification of dicarboxylic acids. ...
DOI:
10.1039/d0gc01354d

11. Simultaneous removal of siloxanes and H2S from biogas using an aerobic biotrickling filter

Author:
Zhang, Yuyao; Oshita, Kazuyuki; Kusakabe, Taketoshi; Takaoka, Masaki; Kawasaki, Yu; Minami, Daisuke; Tanaka, Toshihiro
Source:
Journal of hazardous materials 2020 v.391 pp. 122187
ISSN:
0304-3894
Subject:
siloxanes,   etc   ; biodegradation; biofilters; biogas; hydrogen sulfide; hydrolysis; kinetics; liquids; methane; microbial communities; recycling;     Show all 11 Subjects
Abstract:
... The feasibility of simultaneous removal of siloxane and H₂S from biogas was investigated using an aerobic biotrickling filter (BTF). The biodegradation of H₂S in the BTF followed a first-order kinetic model and more than 95 % H₂S was eliminated within a residence time of 0.3 min. The removal of decamethylcyclopentasiloxane (D5) increased with longer empty bed residence time (EBRT). The partition t ...
DOI:
10.1016/j.jhazmat.2020.122187

12. Typical indoor concentrations and mass flow of cyclic volatile methylsiloxanes (cVMSs) in Dalian, China

Author:
Li, Qingbo; Lv, Xiaoning; Wang, Xiaofeng; Hu, Jiaochan; Wang, Xianyu; Ma, Jianmin
Source:
Chemosphere 2020 v.248 pp. 126020
ISSN:
0045-6535
Subject:
siloxanes,   etc   ; females; males; mass flow; models; personal care products; students; surveys; China;     Show all 9 Subjects
Abstract:
... Cyclic volatile methylsiloxaes (cVMSs), namely hexamethylcyclotrisiloxane (D3), octamethylcyclotetrasiloxane (D4), decamethylcyclopentasiloxane (D5) and dodecamethylcyclohexasiloxane (D6), were studied for a typical indoor environment of male and female dormitories in the campus of Dalian Maritime University (DMU) in China. An empty, frit-fitted SPE cartridge was placed on top of an Isolute ENV +  ...
DOI:
10.1016/j.chemosphere.2020.126020

13. Gaseous adsorption of hexamethyldisiloxane on carbons: Isotherms, isosteric heats and kinetics

Author:
Wang, Gang; Li, Na; Xing, Xin; Sun, Yonggang; Zhang, Zhongshen; Hao, Zhengping
Source:
Chemosphere 2020 v.247 pp. 125862
ISSN:
0045-6535
Subject:
siloxanes,   etc   ; activated carbon; adsorbents; adsorption; biogas; carbon fibers; equations; pollutants; porous media; sorption isotherms; temperature; topology;     Show all 12 Subjects
Abstract:
... Volatile methylsiloxanes (VMS) are a special kind of impurity that exist in biogas and seriously hamper its utilization; therefore, their removal has attracted great attention in recent years. Adsorption is the only technology that is currently capable of industrial-scale removal of VMS. In this research, three carbons with various porous structures, including ordered mesoporous carbon (OMC), acti ...
DOI:
10.1016/j.chemosphere.2020.125862

14. Potentiometric Determination of Palladium(II) in Aqueous Solutions Using a Modified Carbon-Paste Electrode

Author:
Kholmogorova, A. S.; Svintsova, E. A.; Neudachina, L. K.; Lebedeva, E. L.; Puzyrev, I. S.
Source:
Journal of analytical chemistry 2020 v.75 no.5 pp. 679-684
ISSN:
1061-9348
Subject:
siloxanes,   etc   ; EDTA (chelating agent); aqueous solutions; carbon electrodes; pH; palladium; potassium iodide; titration;     Show all 8 Subjects
Abstract:
... We studied the main electrode functions of carbon paste electrodes (CPEs) modified with 0–20% of dithiooxamidated polysiloxane with respect to palladium(II). The conditions for the potentiometric titration of palladium(II) using modified CPEs as indicator electrodes were selected, namely, pH 1–2, solutions of EDTA and potassium iodide as the titrants; and modifier concentration is 0, 5, and 10%. A ...
DOI:
10.1134/S106193482005007X

15. Tube-type passive sampling of cyclic volatile methyl siloxanes (cVMSs) and benzene series simultaneously in indoor air: uptake rate determination and field application

Author:
Li, Qingbo; Wang, Xiaofeng; Wang, Xianyu; Lan, Yongchao; Hu, Jiaochan
Source:
Environmental science 2020 v.22 no.4 pp. 973-980
ISSN:
2050-7895
Subject:
siloxanes,   etc   ; air sampling; benzene; molecular weight; sorbents; styrene; toluene; urban areas; working conditions; China;     Show all 10 Subjects
Abstract:
... Cyclic volatile methyl siloxanes (cVMSs) and benzene series compounds have attracted increasing attention because they are associated with various adverse health effects. In this study, we developed and validated a novel passive air sampling method (PAS), using Tenax-TA as the sorbent, to measure the concentrations of cVMSs (D4, D5, and D6) and benzene series compounds simultaneously in indoor air ...
DOI:
10.1039/c9em00445a

16. Efficient scald-preventing enabled by robust polyester fabrics with hot water repellency and water impalement resistance

Author:
Tian, Ning; Wei, Jinfei; Li, Yabin; Li, Bucheng; Zhang, Junping
Source:
Journal of colloid and interface science 2020 v.566 pp. 69-78
ISSN:
0021-9797
Subject:
siloxanes,   etc   ; boiling; fabrics; heat transfer; hydrochloric acid; hydrophobicity; nanomaterials; polyesters; rats; sodium hydroxide; temperature; vapors; washing;     Show all 13 Subjects
Abstract:
... Scald is a kind of common injury for human beings caused by contacting with hot liquids and/or vapor. Herein, we report the preparation of an advanced fabric for efficient scald-preventing by dip-coating a common polyester fabric in a hexadecyl polysiloxane (HD-POS) aqueous suspension, which was synthesized via a waterborne and nonfluorinated approach. Thanks to the hierarchical micro-/nanostructu ...
DOI:
10.1016/j.jcis.2020.01.067

17. Multifunctional fabric coatings with slow-releasing fragrance and UV resistant properties from ethyl cellulose/silica hybrid microcapsules

Author:
Chen, Kunlin; Xu, Changyue; Zhou, Jianlin; Zhao, Ruoyi; Gao, Qiang; Wang, Chaoxia
Source:
Carbohydrate polymers 2020 v.232 pp. 115821
ISSN:
0144-8617
Subject:
siloxanes,   etc   ; Lavandula; biopolymers; cellulose; coatings; emulsions; fabrics; odors; oils; resins; silica; solvents;     Show all 12 Subjects
Abstract:
... The synthesis of multifunctional microcapsules using natural polymers has contributed to a broad range of practical applications on fabric coatings. This paper presents a facile and environment-friendly approach for waterborne multifunctional fabric coatings by using cellulose/silica hybrid microcapsules. In this method, lavender fragrance oil-loaded cellulose/silica hybrid microcapsules were one- ...
DOI:
10.1016/j.carbpol.2019.115821

18. Separation of crocetane and phytane and measurement of their compound-specific carbon isotopic compositions

Author:
Tian, Yankuan; Zhan, Zhao-Wen; Zou, Yan-Rong; Liao, Zewen; Peng, Ping'an
Source:
Journal of chromatography 2020 v.1612 pp. 460621
ISSN:
0021-9673
Subject:
siloxanes,   etc   ; biomarkers; carbon; gas chromatography-mass spectrometry; isomers; petroleum; sediments; steroids; terpenoids;     Show all 9 Subjects
Abstract:
... Crocetane and phytane are two isoprenoids isomers with similar molecular structures and often present together in methane-seep sediments and some Palaeozoic crude oils. Their commonly co-elution on gas chromatography is challenging for quality and quantity analysis, making it impossible to determine their compound-specific isotopic composition, and thus, insight their geological and geochemical si ...
DOI:
10.1016/j.chroma.2019.460621

19. Small-scale CCHP systems for waste heat recovery from cement plants: Thermodynamic, sustainability and economic implications

Author:
Nami, Hossein; Anvari-Moghaddam, Amjad
Source:
Energy 2020 v.192 pp. 116634
ISSN:
0360-5442
Subject:
siloxanes,   etc   ; absorption; cement; cooling; exergy; generators (equipment); steam; waste heat recovery; Turkey (country);     Show all 9 Subjects
Abstract:
... In this paper, different combined cooling, heating and power (CCHP) systems are introduced and studied for waste heat recovery from a cement plant located in Şanliurfa, Turkey considering domestic applications. One of the systems is based on the steam Rankine cycle and the next is based on recuperative organic Rankine cycle (ORC), while both of them are equipped with a LiBr–H2O absorption chiller ...
DOI:
10.1016/j.energy.2019.116634

20. Lung cell exposure to secondary photochemical aerosols generated from OH oxidation of cyclic siloxanes

Author:
King, Benjamin M.; Janechek, Nathan J.; Bryngelson, Nathan; Adamcakova-Dodd, Andrea; Lersch, Traci; Bunker, Kristin; Casuccio, Gary; Thorne, Peter S.; Stanier, Charles O.; Fiegel, Jennifer
Source:
Chemosphere 2020 v.241 pp. 125126
ISSN:
0045-6535
Subject:
siloxanes,   etc   ; acute toxicity; aerosols; chemical composition; gases; liquid-air interface; lungs; oxygen; ozone; photooxidation; silicon;     Show all 11 Subjects
Abstract:
... To study the fate of cyclic volatile methyl siloxanes (cVMS) undergoing photooxidation in the environment and to assess the acute toxicity of inhaled secondary aerosols from cVMS, we used an oxidative flow reactor (OFR) to produce aerosols from oxidation of decamethylcyclopentasiloxane (D5). The aerosols produced from this process were characterized for size, shape, and chemical composition. We fo ...
DOI:
10.1016/j.chemosphere.2019.125126
PubMed:
31683444
PubMed Central:
PMC6941482