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Articoli di riviste sul tema "DIMETHYLSILOXANE"

Autore: Grafiati

Pubblicato: 26 ottobre 2023

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1

Antic, Vesna, Marija Vuckovic e Milutin Govedarica. "Synthesis of ester-siloxane multiblock copolymers". Chemical Industry 58, n. 11 (2004): 499–504. http://dx.doi.org/10.2298/hemind0411499a.

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It was shown that the two-stage transesterification/polycondensation reaction in the melt, can successfully be applied for the preparation of poly(butylene terephtalate-dimethylsiloxane) multiblock copolymers. Three series of co-polymers were synthesized, using poly(dimethylsiloxanes) bearing ester (two series) and hydroxy -end groups as reactants. The structure and composition of the obtained copolymers were determined by 1H NMR spectroscopy A mechanism, i.e. an order of reaction steps, involved in the preparation of the copolymers, was suggested.

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2

Wilczek, Lech, Munmaya K. Mishra e Joseph P. Kennedy. "The Synthesis of Poly(Dimethylsiloxane-b-Isobutylene-b-Dimethylsiloxane) and Poly-(Dimethylsiloxane-b-Isobutylene-b-Dimethylsiloxane) from Alcohol-Telechelic Polyisobutylenes". Journal of Macromolecular Science: Part A - Chemistry 24, n. 9 (settembre 1987): 1033–49. http://dx.doi.org/10.1080/00222338708078141.

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3

Mukbaniani, O. V., M. G. Karchkhadze, L. M. Khananashvili e N. A. Koiava. "Arylenecyclosiloxane-dimethylsiloxane copolymers". International Journal of Polymeric Materials and Polymeric Biomaterials 52, n. 10 (gennaio 2003): 877–89. http://dx.doi.org/10.1080/713743639.

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4

Mukbaniani, O., N. Koiava, M. Karchkhadze, R. Tkeshelashvili, M. Shengelia e L. Khananashvili. "Arylenecyclosiloxane-dimethylsiloxane copolymers". Journal of Applied Polymer Science 82, n. 13 (2001): 3142–48. http://dx.doi.org/10.1002/app.2171.

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5

Wang, Baoyu, e Sonja Krause. "Properties of dimethylsiloxane microphases in phase-separated dimethylsiloxane block copolymers". Macromolecules 20, n. 9 (settembre 1987): 2201–8. http://dx.doi.org/10.1021/ma00175a026.

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6

Escutia-Guadarrama, Lidia, Genaro Vázquez-Victorio, David Martínez-Pastor, Brenda Nieto-Rivera, Marcela Sosa-Garrocho, Marina Macías-Silva e Mathieu Hautefeuille. "Fabrication of low-cost micropatterned polydimethyl-siloxane scaffolds to organise cells in a variety of two-dimensioanl biomimetic arrangements for lab-on-chip culture platforms". Journal of Tissue Engineering 8 (1 gennaio 2017): 204173141774150. http://dx.doi.org/10.1177/2041731417741505.

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We present the rapid-prototyping of type I collagen micropatterns on poly-dimethylsiloxane substrates for the biomimetic confinement of cells using the combination of a surface oxidation treatment and 3-aminopropyl triethoxysilane silanisation followed by glutaraldehyde crosslinking. The aim of surface treatment is to stabilise microcontact printing transfer of this natural extracellular matrix protein that usually wears out easily from poly-dimethylsiloxane, which is not suitable for biomimetic cell culture platforms and lab-on-chip applications. A low-cost CD-DVD laser was used to etch biomimetic micropatterns into acrylic sheets that were in turn replicated to poly-dimethylsiloxane slabs with the desired features. These stamps were finally inked with type I collagen for microcontact printing transfer on the culture substrates in a simple manner. Human hepatoma cells (HepG2) and rat primary hepatocytes, which do not adhere to bare poly-dimethylsiloxane, were successfully seeded and showed optimal adhesion and survival on simple protein micropatterns with a hepatic cord geometry in order to validate our technique. HepG2 cells also proliferated on the stamps. Soft and stiff poly-dimethylsiloxane layers were also tested to demonstrate that our cost-effective process is compatible with biomimetic organ-on-chip technology integrating tunable stiffness with a potential application to drug testing probes development where such cells are commonly used.

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7

Kim, Bo-Yeol, Hwan-Moon Song, Young-A. Son e Chang-Soo Lee. "Rapid Topological Patterning of Poly(dimethylsiloxane) Microstructure". Textile Coloration and Finishing 20, n. 1 (27 febbraio 2008): 8–15. http://dx.doi.org/10.5764/tcf.2008.20.1.008.

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8

Grabowska, K., A. Wieczorek, D. Bednarska e M. Koniorczyk. "The effect of silanes as integral hydrophobic admixture on the physical properties of cement based materials". Journal of Physics: Conference Series 2069, n. 1 (1 novembre 2021): 012045. http://dx.doi.org/10.1088/1742-6596/2069/1/012045.

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Abstract The paper explores the possibility of using organosilicon compounds (e.g., poly(dimethylsiloxane) and triethoxyoctylsilane) in commercial admixtures as internal hydrophobization agents for porous cement-based materials. The study involved the cement mortar with five different hydrophobic admixtures. Four of them is based on triethoxyoctylsilane, but with various concentration of the main ingredient, and one of them on poly(dimethylsiloxane). Mechanical properties, capillary water absorption, as well as microstructure were investigated. The organosilicon admixtures efficiently decrease the capillary water absorption even by 81% decreasing mechanical strength of cement mortar at the same time even by 55%. Only one admixture, based on poly(dimethylsiloxane) caused significant changes in microstructure of cement mortar.

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9

Lu, Zhou, Joji Ohshita, Daiki Tanaka, Tomonobu Mizumo, Yuki Fujita e Yoshihito Kunugi. "Synthesis of oligo(dimethylsiloxane)–oligothiophene alternate polymers from α,ω-dibromooligo(dimethylsiloxane)". Journal of Organometallic Chemistry 731 (maggio 2013): 73–77. http://dx.doi.org/10.1016/j.jorganchem.2013.02.011.

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10

Urayama, Kenji, Keisuke Yokoyama e Shinzo Kohjiya. "Viscoelastic Relaxation of Guest Linear Poly(dimethylsiloxane) in End-Linked Poly(dimethylsiloxane) Networks". Macromolecules 34, n. 13 (giugno 2001): 4513–18. http://dx.doi.org/10.1021/ma010167s.

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11

Durgar'yan, S. G., e V. G. Filippova. "Synthesis and properties of three-block copolymers poly(dimethylsiloxane)-poly(vinyltrimethylsilane)-poly(dimethylsiloxane)". Polymer Science U.S.S.R. 28, n. 2 (gennaio 1986): 364–70. http://dx.doi.org/10.1016/0032-3950(86)90092-4.

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12

Su, Wei-Lun, e Ying-Ling Liu. "Self-crosslinkable and modifiable polysiloxanes possessing Meldrum's acid groups". Polymer Chemistry 9, n. 38 (2018): 4781–88. http://dx.doi.org/10.1039/c8py01173g.

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13

Li, Li, Shuai Ren, Manyu Shao, Sarah De Saeger, Suquan Song e Liping Yan. "A competitive immunoassay for zearalenone with integrated poly(dimethysiloxane) based microarray assay". Analytical Methods 10, n. 33 (2018): 4036–43. http://dx.doi.org/10.1039/c8ay01307a.

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14

Cha, Eun-Ju, e Dong-Sun Lee. "Poly(dimethylsiloxane) Mini-disk Extraction". Bulletin of the Korean Chemical Society 32, n. 10 (20 ottobre 2011): 3603–9. http://dx.doi.org/10.5012/bkcs.2011.32.10.3603.

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15

Kawakami, Yusuke, Kaori Ajima, Makoto Nomura, Tatsuhiro Hishida e Atsunori Mori. "Butadiene-Functionalized Poly(dimethylsiloxane) Macromonomer". Polymer Journal 29, n. 1 (gennaio 1997): 95–99. http://dx.doi.org/10.1295/polymj.29.95.

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16

Wisian-Neilson, Patty, e M. Safiqul Islam. "Poly(methylphenylphosphazene)-graft-poly(dimethylsiloxane)". Macromolecules 22, n. 4 (luglio 1989): 2026–28. http://dx.doi.org/10.1021/ma00194a091.

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17

Mukbaniani, O., M. Karchadze, M. Matsaberidze, V. Achelashvili, L. M. Khananashvili e N. Kvelashvili. "Silarylencyclohexasiloxane—Poly-dimethylsiloxane Block-copolymers". International Journal of Polymeric Materials 41, n. 1-2 (luglio 1998): 103–12. http://dx.doi.org/10.1080/00914039808034858.

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18

Braun, J. L., J. E. Mark e B. E. Eichinger. "Formation of Poly(dimethylsiloxane) Gels". Macromolecules 35, n. 13 (giugno 2002): 5273–82. http://dx.doi.org/10.1021/ma0116046.

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19

Sundararajan, P. R. "Crystalline morphology of poly(dimethylsiloxane)". Polymer 43, n. 5 (marzo 2002): 1691–93. http://dx.doi.org/10.1016/s0032-3861(01)00743-1.

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20

Ghannam, Mamdouh T., e M. Nabil Esmail. "Rheological Properties of Poly(dimethylsiloxane)". Industrial & Engineering Chemistry Research 37, n. 4 (aprile 1998): 1335–40. http://dx.doi.org/10.1021/ie9703346.

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21

Roland, C. M., e K. L. Nagi. "Segmental Relaxation in Poly(dimethylsiloxane)". Macromolecules 29, n. 17 (gennaio 1996): 5747–50. http://dx.doi.org/10.1021/ma960045d.

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22

Ullas, A. V., D. Kumar e P. K. Roy. "Poly(dimethylsiloxane)-toughened syntactic foams". Journal of Applied Polymer Science 135, n. 8 (30 ottobre 2017): 45882. http://dx.doi.org/10.1002/app.45882.

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23

Interrante, Leonard V., Qionghua Shen e Jun Li. "Poly(dimethylsilylenemethylene-co- dimethylsiloxane): A Regularly Alternating Copolymer of Poly(dimethylsiloxane) and Poly(dimethylsilylenemethylene)". Macromolecules 34, n. 6 (marzo 2001): 1545–47. http://dx.doi.org/10.1021/ma001785w.

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24

Montazeri, Leila, Shahin Bonakdar, Mojtaba Taghipour, Philippe Renaud e Hossein Baharvand. "Modification of PDMS to fabricate PLGA microparticles by a double emulsion method in a single microfluidic device". Lab on a Chip 16, n. 14 (2016): 2596–600. http://dx.doi.org/10.1039/c6lc00437g.

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25

Rossi de Aguiar, K. M. F., E. P. Ferreira-Neto, S. Blunk, J. F. Schneider, C. A. Picon, C. M. Lepienski, K. Rischka e U. P. Rodrigues-Filho. "Hybrid urethanesil coatings for inorganic surfaces produced by isocyanate-free and sol–gel routes: synthesis and characterization". RSC Advances 6, n. 23 (2016): 19160–72. http://dx.doi.org/10.1039/c5ra24331a.

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26

Panchireddy, S., J. M. Thomassin, B. Grignard, C. Damblon, A. Tatton, C. Jerome e C. Detrembleur. "Reinforced poly(hydroxyurethane) thermosets as high performance adhesives for aluminum substrates". Polymer Chemistry 8, n. 38 (2017): 5897–909. http://dx.doi.org/10.1039/c7py01209h.

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27

Kuroda, Keita, Hiromi Miyoshi, Shota Fujii, Tomoyasu Hirai, Atsushi Takahara, Aiko Nakao, Yasuhiko Iwasaki, Kenichi Morigaki, Kazuhiko Ishihara e Shin-ichi Yusa. "Poly(dimethylsiloxane) (PDMS) surface patterning by biocompatible photo-crosslinking block copolymers". RSC Advances 5, n. 58 (2015): 46686–93. http://dx.doi.org/10.1039/c5ra08843g.

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28

Ube, T., K. Minagawa e T. Ikeda. "Interpenetrating polymer networks of liquid-crystalline azobenzene polymers and poly(dimethylsiloxane) as photomobile materials". Soft Matter 13, n. 35 (2017): 5820–23. http://dx.doi.org/10.1039/c7sm01412k.

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29

Jung, Joonhoo, Kyung Min Lee, Sung-Hyeon Baeck e Sang Eun Shim. "Piezoresistive behavior of a stretchable carbon nanotube-interlayered poly(dimethylsiloxane) sheet with a wrinkled structure". RSC Advances 5, n. 89 (2015): 73162–68. http://dx.doi.org/10.1039/c5ra12928a.

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30

Manju, Manju, Prasun Kumar Roy, Arunachalam Ramanan e Chitra Rajagopal. "Core–shell polysiloxane–MOF 5 microspheres as a stationary phase for gas–solid chromatographic separation". RSC Adv. 4, n. 34 (2014): 17429–33. http://dx.doi.org/10.1039/c4ra00894d.

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31

Wang, Yu, Xiaoyu Li, Heng Hu, Guojun Liu e Muhammad Rabnawaz. "Hydrophilically patterned superhydrophobic cotton fabrics and their use in ink printing". J. Mater. Chem. A 2, n. 21 (2014): 8094–102. http://dx.doi.org/10.1039/c4ta00714j.

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32

Huikko, K., P. Östman, K. Grigoras, S. Tuomikoski, V. M. Tiainen, A. Soininen, K. Puolanne et al. "Poly(dimethylsiloxane) electrospray devices fabricated with diamond-like carbon–poly(dimethylsiloxane) coated SU-8 masters". Lab Chip 3, n. 2 (2003): 67–72. http://dx.doi.org/10.1039/b300345k.

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33

Ciolino, A. E., O. I. Pieroni, B. M. Vuano, M. A. Villar e E. M. Vallés. "Synthesis of polybutadiene-graft-poly(dimethylsiloxane) and polyethylene-graft-poly(dimethylsiloxane) copolymers with hydrosilylation reactions". Journal of Polymer Science Part A: Polymer Chemistry 42, n. 12 (7 maggio 2004): 2920–30. http://dx.doi.org/10.1002/pola.20032.

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34

Rabnawaz, Muhammad, Zijie Wang, Yu Wang, Ian Wyman, Heng Hu e Guojun Liu. "Synthesis of poly(dimethylsiloxane)-block-poly[3-(triisopropyloxysilyl) propyl methacrylate] and its use in the facile coating of hydrophilically patterned superhydrophobic fabrics". RSC Advances 5, n. 49 (2015): 39505–11. http://dx.doi.org/10.1039/c5ra02067k.

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35

Liang, Suqing, Yaoyao Li, Yuzhen Chen, Jinbin Yang, Taipeng Zhu, Deyong Zhu, Chuanxin He, Yizhen Liu, Stephan Handschuh-Wang e Xuechang Zhou. "Liquid metal sponges for mechanically durable, all-soft, electrical conductors". Journal of Materials Chemistry C 5, n. 7 (2017): 1586–90. http://dx.doi.org/10.1039/c6tc05358k.

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36

Hsieh, Gen-Wen, Shih-Rong Ling, Fan-Ting Hung, Pei-Hsiu Kao e Jian-Bin Liu. "Enhanced piezocapacitive response in zinc oxide tetrapod–poly(dimethylsiloxane) composite dielectric layer for flexible and ultrasensitive pressure sensor". Nanoscale 13, n. 12 (2021): 6076–86. http://dx.doi.org/10.1039/d0nr06743a.

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37

Chuah, Yon Jin, Shreyas Kuddannaya, Min Hui Adeline Lee, Yilei Zhang e Yuejun Kang. "The effects of poly(dimethylsiloxane) surface silanization on the mesenchymal stem cell fate". Biomaterials Science 3, n. 2 (2015): 383–90. http://dx.doi.org/10.1039/c4bm00268g.

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38

Valor, Ignacio, Mónica Pérez, Carel Cortada, David Apraiz, Juan Carlos Moltó e Guillermina Font. "SPME of 52 pesticides and polychlorinated biphenyls: Extraction efficiencies of the SPME coatings poly(dimethylsiloxane), polyacrylate, poly(dimethylsiloxane)-divinylbenzene, Carboxen-poly(dimethylsiloxane), and Carbowax-divinylbenzene". Journal of Separation Science 24, n. 1 (1 gennaio 2001): 39–48. http://dx.doi.org/10.1002/1615-9314(20010101)24:1<39::aid-jssc39>3.0.co;2-2.

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39

Chan, Benjamin Qi Yu, Sylvester Jun Wen Heng, Sing Shy Liow, Kangyi Zhang e Xian Jun Loh. "Dual-responsive hybrid thermoplastic shape memory polyurethane". Materials Chemistry Frontiers 1, n. 4 (2017): 767–79. http://dx.doi.org/10.1039/c6qm00243a.

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40

Zhou, Xin, e Chaobin He. "Tailoring the surface chemistry and morphology of glass fiber membranes for robust oil/water separation using poly(dimethylsiloxanes) as hydrophobic molecular binders". Journal of Materials Chemistry A 6, n. 2 (2018): 607–15. http://dx.doi.org/10.1039/c7ta09411f.

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41

Zhang, Yaling, Chunhui Dai, Shiwei Zhou e Bin Liu. "Enabling shape memory and healable effects in a conjugated polymer by incorporating siloxane via dynamic imine bond". Chemical Communications 54, n. 72 (2018): 10092–95. http://dx.doi.org/10.1039/c8cc05410j.

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42

Guo, Xiao-Jing, Chao-Hua Xue, Min Li, Xing Li e Jian-Zhong Ma. "Fabrication of robust, superhydrophobic, electrically conductive and UV-blocking fabrics via layer-by-layer assembly of carbon nanotubes". RSC Advances 7, n. 41 (2017): 25560–65. http://dx.doi.org/10.1039/c7ra02111a.

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43

Forget, A., A. L. S. Burzava, B. Delalat, K. Vasilev, F. J. Harding, A. Blencowe e N. H. Voelcker. "Correction: Rapid fabrication of functionalised poly(dimethylsiloxane) microwells for cell aggregate formation". Biomaterials Science 5, n. 5 (2017): 1061. http://dx.doi.org/10.1039/c7bm90020a.

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44

Park, Seung, Bong Park, Mee Choi, Dong Kim, Jae Yoon, Eun Shin, Sungryul Yun e Suntak Park. "Facile Functionalization of Poly(Dimethylsiloxane) Elastomer by Varying Content of Hydridosilyl Groups in a Crosslinker". Polymers 11, n. 11 (8 novembre 2019): 1842. http://dx.doi.org/10.3390/polym11111842.

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Abstract (sommario):

Crosslinked poly(dimethylsiloxane) (PDMS) has been widely used as a dielectric elastomer for electrically driven actuators because it exhibits high elasticity, low initial modulus, and excellent moldability in spite of low dielectric constant. However, further improvement in the characteristics of the PDMS elastomer is not easy due to its chemical non-reactivity. Here, we report a simple method for functionalizing the elastomer by varying content of hydridosilyl groups in PDMS acted as a crosslinker. We synthesized poly(dimethylsiloxane-co-methylvinylsiloxane) (VPDMS) and poly(dimethylsiloxane-co-methylsiloxane) (HPDMS). Tri(ethylene glycol) divinyl ether (TEGDE) as a polar molecule was added to the mixture of VPDMS and HPDMS. TEGDE was reacted to the hydridosilyl group in HPDMS during crosslinking between VPDMS and HPDMS in the presence of platinum as a catalyst. Permittivity of the crosslinked film increased from ca. 25 to 36 pF/m at 10 kHz without a decline in other physical properties such as transparency and elasticity (T > 85%, E ~150 kPa, ɛ ~270%). It depends on the hydridosilyl group content of HPDMS. The chemical introduction of a new molecule into the hydridosilyl group in HPDMS during crosslinking would provide a facile, effective method of modifying the PDMS elastomers.

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45

Dojcinovic, Biljana, Vesna Antic, Marija Vuckovic e Jasna Djonlagic. "Synthesis of thermoplastic poly(ester-siloxane)s in the melt and in solution". Journal of the Serbian Chemical Society 70, n. 12 (2005): 1469–85. http://dx.doi.org/10.2298/jsc0512469d.

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Abstract (sommario):

Two series of thermoplastic elastomers, based on poly(dimethylsiloxane) PDMS, as the soft segment and poly(butylene terephthalate), PBT, as the hard segment, were synthesized by catalyzed transesterification, from dimethyl terephthalate, DMT, silanol-terminated poly(dimethylsiloxane), PDMS-OH Mn=1750g/mol, and 1,4-butanediol, BD. The mole ratio of the starting comonomers was selected to result in a constant hard to soft weight ratio of 55:45. The first series was synthesized in order to determine the optimal mole ratio of BD and DMT for the synthesis of high molecular weight thermoplastic poly(ester-siloxane)s, TPESs. The second series was performed in the presence of the high-boiling solvent, 1,2,4-trichlorbenzene in order to increase the mixing between the extremely non-polar siloxane prepolymer and the polar reactants, DMT and BD, and, therefore, avoid phase separation during synthesis. The structure and composition of the synthesized poly(ester-siloxane)s were verified by 1H-NMR spectroscopy, while the melting temperatures and degree of crystallinity were determined by differential scanning calorimetry (DSC). The effectiveness of the incorporation of the silanol-terminated poly( dimethylsiloxane) into the polyester chains was verified by chloroform extraction. The rheological properties of the poly(ester-siloxane)s were investigated by dynamic mechanical spectroscopy (DMA).

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46

Williams, Zachary H., Emily D. Burwell, Ambre E. Chiomento, Kyle J. Demsko, Jacob T. Pawlik, Shannon O. Harris, Mark R. Yarolimek, Megan B. Whitney, Michael Hambourger e Alexander D. Schwab. "Rubber-elasticity and electrochemical activity of iron(ii) tris(bipyridine) crosslinked poly(dimethylsiloxane) networks". Soft Matter 13, n. 37 (2017): 6542–54. http://dx.doi.org/10.1039/c7sm01169e.

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47

Kamguyan, Khorshid, Ali Asghar Katbab, Morteza Mahmoudi, Esben Thormann, Saeed Zajforoushan Moghaddam, Lida Moradi e Shahin Bonakdar. "An engineered cell-imprinted substrate directs osteogenic differentiation in stem cells". Biomaterials Science 6, n. 1 (2018): 189–99. http://dx.doi.org/10.1039/c7bm00733g.

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Abstract (sommario):

A cell-imprinted poly(dimethylsiloxane)/hydroxyapatite nanocomposite substrate was fabricated to engage topographical, mechanical, and chemical signals to stimulate and boost stem cell osteogenic differentiation.

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48

Lee, Su Yeon, e Shu Yang. "Compartment fabrication of magneto-responsive Janus microrod particles". Chemical Communications 51, n. 9 (2015): 1639–42. http://dx.doi.org/10.1039/c4cc07863b.

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Abstract (sommario):

Monodispersed magneto-responsive microrod particles of variable magnetic/non-magnetic ratios and chemical compositions are created by compartment fabrication in a single poly(dimethylsiloxane) (PDMS) mold.

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49

Ryu, Seokgyu, Taeseob Oh e Jooheon Kim. "Surface modification of a BN/ETDS composite with aniline trimer for high thermal conductivity and excellent mechanical properties". RSC Advances 8, n. 40 (2018): 22846–52. http://dx.doi.org/10.1039/c8ra03875a.

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50

Xiong, Xinhong, Zhaoqiang Wu, Jingjing Pan, Lulu Xue, Yajun Xu e Hong Chen. "A facile approach to modify poly(dimethylsiloxane) surfaces via visible light-induced grafting polymerization". Journal of Materials Chemistry B 3, n. 4 (2015): 629–34. http://dx.doi.org/10.1039/c4tb01600a.

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