Synthesis of antibacterial amphiphilic elastomer based on polystyrene-block-polyisoprene-block-polystyrene via thiol-ene addition

Keleş, Elif; Hazer, Baki; Cömert, Füsun

doi:10.1016/j.msec.2012.11.029

Cited by 40 publications

(22 citation statements)

References 50 publications

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“…According to previous researches, the functionality can exceed 0.9 in most cases using compounds with thiol functional groups as chain transfer agent . In this article, functionality of 5HFBMA(OH) 2 and 10HFBMA(OH) 2 was determined by GPC, end group titration and 1 HNMR.…”

Section: Resultsmentioning

confidence: 96%

“…Enlightened by the above points, in the present work, novel hydrophobic waterborne UV‐curable polyurethane containing long fluorinated side chains was prepared by two novel fluorinated macromolecular diol with different molecular weight, naming 5HFBMA‐(OH) 2 and 10HFBMA‐(OH) 2 , respectively, as chain extender. The fluorinated macromolecular diol was synthesized via thiol‐ene addition . Compared to reported references, in our research, the method we use is rather versatile and facile.…”

Section: Introductionmentioning

confidence: 94%

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Preparation and performance of waterborne UV‐curable polyurethane containing long fluorinated side chains

Tan

Liu

Wang

2016

J of Applied Polymer Sci

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Novel waterborne UV-curable polyurethane containing long fluorinated side chains (WUVFPU) was prepared and the fluorinated component was incorporated by two novel fluorinated macromolecular diols (FDO) with different chain length as chain extender. FDO was synthesized via free radical polymerization of hexafluorobutyl methacrylate (HFBMA) using 1-thioglycerol (TG) as chain transfer agent. Extremely low dosage of FDO incorporated could change the surface property significantly. The influence of both the content and chain length of FDO on the surface energy, surface composition and morphology were investigated by contact angle measurement, XPS and AFM. Surface energy significantly decreased at extremely low concentration of FDO. The hydrophobicity was enhanced with increasing both the content and the chain length of FDO. XPS and AFM results revealed the enhancing hydrophobicity was attributed to the enrichment of F atoms and rougher surface morphology. Gel content, pencil hardness, adhesion, and optical transmittance tests were employed to investigate the coating properties of the UV-cured films. The preparation and investigation of WUVFPU might provide better understanding of the influence of fluorinated chain length on the properties of polyurethane for theory. Moreover, it might provide a facile and effective route to prepare polyurethane materials with low surface energy for engineering and industry.

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Section: Resultsmentioning

confidence: 96%

Section: Introductionmentioning

confidence: 94%

Preparation and performance of waterborne UV‐curable polyurethane containing long fluorinated side chains

Tan

Liu

Wang

2016

J of Applied Polymer Sci

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“…The binder should have good film-forming property, but the adhesion between the formed film (conductive layer) and the donated substrate should be weak. [48][49][50] Hence, the SIS is an ideal material to use as binder in conductive ink system and serves as elastomer substrate. The polystyreneblock-polyisoprene-block-polystyrene (SIS) has good fluidity, film formability and excellent compatibility with other additives, and the viscosity of SIS can be adjusted by controlling the content of xylene.…”

Section: Introductionmentioning

confidence: 99%

Multifunctional Ultrastretchable Printed Soft Electronic Devices for Wearable Applications

Tian

Luo

et al. 2019

Adv Elect Materials

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the researchers are beginning to introduce some features (such as the flexibility, bendability, self-healing, stretchability, sensing function, heater management) into the single electronic device to achieve the multifunctional integrated electronic systems. [7,22,[24][25][26][27] Therefore, multifunctionality becomes a major trend in flexible wearable electronics, which can effectively reduce production costs and save space.Interestingly, the flexible conductors, resistive-type strain sensors, and Joule heaters have similar device structures, making it possible to integrate all these functions in one device. [28,29] Recently, Souri and Bhattacharyya reported highly stretchable multifunctional wearable electronics (MWEs) based on conductive wool fabrics coated with graphene nanoplatelets and carbon black, which possessed sensing and heating performance. [7] However, owing to the high initial resistance (1.22 ± 0.15 KΩ), the MWEs require a high load voltage of 20 V to heat up to 103 °C, and its gauge factor (GF) is less than 0.5. [7] Cai and coauthors prepared MWEs based on carbon nanotube (CNT)/ cotton/spandex composite yarn that can be stretched to 350%, but also exhibit low sensitivity and poor heating performance (heated to 105 °C at 10 V). [8] Therefore, it is still a challenge to obtain the MWEs with high stretchability, good sensitivity, and excellent low-voltage driving heating performance.The electrical conductivity determines the performance of conductors and low-voltage driving heaters, in par with the sensitivity of resistive-type strain sensors. Compared with the carbon-based materials (such as graphene, [30] CNTs, [5] and carbonized fibers [31] ), the metallic nanomaterials, especially of silver nanomaterials (including Ag nanowires, Ag flakes) usually have superior electrical conductivity. [32][33][34] Among in silver nanomaterials, silver fractal dendrites (Ag FDs) with unique branch structure could obtain high conductivity at lower sintering temperature (<80 °C). The unique structure of Ag FDs provides larger surface area, which is beneficial to maintain the connection of conductive path under tensile strain. [9,28,35] In our previous works, the preparation process of the Ag FDs is simple and fast, enabling mass production. [9,28] Therefore, the Ag FDs is an ideal conductive material for fabricating the MWEs with high conductivity, excellent sensing performance and Joule heating performance.Another challenge is to exploit a simple and fast way to fabricate the high-performance MWEs. Conductors, resistivetype strain sensors and heaters have simple and similar device Multifunctionality is a major development trend in flexible stretchable wearable electronics, requiring integration of electrical conductivity, sensing performance, and heating management on a portable electronic device. Herein, the silver fractal dendrites (Ag FDs) conductive ink is formulated and deposited into the polystyrene-block-polyisoprene-block-polystyrene (SIS) thin films by a simple and cost-effective transfer-printing method...

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“…PEG carrying different functional groups were also used as macromonomers to obtain porous and hyperbranched hydrogels and macromolecules . Because of their low interfacial free energy and capability to bind metals, PEG containing polymers have a potential for antibacterial applications …”

Section: Introductionmentioning

confidence: 99%

Effects of pore morphology and size on antimicrobial activity of chitosan/poly(ethylene glycol) diacrylate macromer semi‐IPNhydrogels

Bedel

Tezcan

Ceylan

et al. 2015

J of Applied Polymer Sci

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The objective of this study was to obtain antibacterial active chitosan/poly(ethylene glycol) diacrylate macromere (CS/PEGM) semi‐IPN hydrogels near a neutral pH level by changing their pore size and morphology. These hydrogels were prepared from CS and PEGM with different molecular weights in the presence of pore‐forming agents, poly (ethylene glycol) (PEG) or sodium bicarbonate (NaHCO3), by using two different initiator system, namely chemical or UV. A combination of CS with PEG or NaHCO3 in the presence of PEGM could be able to create desired pore formation in both initiator systems. The antibacterial activity of hydrogels changed with the molecular weight (g/mol) of PEGM in the order 2000>400>8000. A chemical initiation system was found more suitable than the UV initiation system for antibacterial activity. Hydrogels showing the highest antibacterial activity on Staphylococcus aureus and Escherichia coli have medium or distributed pore size and interconnected pores. Hydrogels prepared with PEGM (Mn: 2000 g/mol) were proposed for antibacterial wound dressing and soft tissue regeneration applications owing to their antibacterial activity and elastic modulus. © 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015, 132, 42707.

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Synthesis of antibacterial amphiphilic elastomer based on polystyrene-block-polyisoprene-block-polystyrene via thiol-ene addition

Cited by 40 publications

References 50 publications

Preparation and performance of waterborne UV‐curable polyurethane containing long fluorinated side chains

Preparation and performance of waterborne UV‐curable polyurethane containing long fluorinated side chains

Multifunctional Ultrastretchable Printed Soft Electronic Devices for Wearable Applications

Effects of pore morphology and size on antimicrobial activity of chitosan/poly(ethylene glycol) diacrylate macromer semi‐IPNhydrogels

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