Tag: M.W=400-500

Amato, Dahlia N. published the artcileProgrammable Porous Polymers via Direct Bubble Writing with Surfactant-Free Inks, Product Details of C17H28O8S4, the main research area is porous polymer direct bubble writing ink macroporous thiol ene; 3D printing; functionally graded materials; nonaqueous foam; polymer foams; thiol−ene.

Fabrication of macroporous polymers with functionally graded architecture or chem. bears transformative potential in acoustic damping, energy storage materials, flexible electronics, and filtration but is hardly reachable with current processes. Here, we introduce thiol-ene chemistries in direct bubble writing, a recent technique for additive manufacturing of foams with locally controlled cell size, d., and macroscopic shape. Surfactant-free and solvent-free graded three-dimensional (3D) foams without drying-induced shrinkage were fabricated by direct bubble writing at an unparalleled ink viscosity of 410 cP (40 times higher than previous formulations). Functionalities including shape memory, high glass transition temperatures (>25°C), and chem. gradients were demonstrated. These results extend direct bubble writing from aqueous inks to nonaqueous formulations at high liquid flow rates (3 mL min-1). Altogether, direct bubble writing with thiol-ene inks promises rapid one-step fabrication of functional materials with locally controlled gradients in the chem., mech., and architectural domains.

ACS Applied Materials & Interfaces published new progress about Cell volume. 7575-23-7 belongs to class alcohols-buliding-blocks, name is Pentaerythritol tetra(3-mercaptopropionate), and the molecular formula is C17H28O8S4, Product Details of C17H28O8S4.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Anuja, Katariya-Jain published the artcileAn overview of HPDLC films and their applications, Recommanded Product: Pentaerythritol tetra(3-mercaptopropionate), the main research area is polymer dispersed liquid crystal film application.

The fusion of holog. to the LC-polymer composites give rise to holog. polymer dispersed liquid crystal (HPDLC) technol. The concentration of monomer unit in HPDLC films is quite high as compared to the other polymer-LC composite films. Difference in the rate of polymerization in different regions of composite film gives rise to alternate bright and dark fringes. In this review article along with the underlying principle of HPDLC films, we have discussed some electro-optical (EO) parameters like response time, diffraction efficiency (DE) and driving voltages necessary for the evaluation of a film. The classification and types of HPDLC gratings, which actually depend upon writing set up, grating period and thickness, has also found good space in this article. Recent advances to improve the efficiency of HPDLC films by varying material mixture and fabrication techniques is also discussed. Different types of evolved morphologies typically, LC droplet, Policryps and Polymer Scaffolding is described. Some trending applications of HPDLC films such as sensor, photonic crystals, mirrorless lasing etc are also highlighted.

Liquid Crystals published new progress about Diffraction. 7575-23-7 belongs to class alcohols-buliding-blocks, name is Pentaerythritol tetra(3-mercaptopropionate), and the molecular formula is C17H28O8S4, Recommanded Product: Pentaerythritol tetra(3-mercaptopropionate).

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Jiang, Jieke published the artcileContinuous High-Throughput Fabrication of Architected Micromaterials via In-Air Photopolymerization, SDS of cas: 7575-23-7, the main research area is throughput fabrication architected micromaterial indium air photopolymerization; in-air photopolymerization; liquid jets; microfibers; microparticles; shape control.

Recent advances in optical coding, drug delivery, diagnostics, tissue engineering, shear-induced gelation, and functionally engineered rheol. crucially depend on microparticles and microfibers with tunable shape, size, and composition However, scalable manufacturing of the required complex micromaterials remains a long-standing challenge. Here in-air polymerization of liquid jets is demonstrated as a novel platform to produce microparticles and microfibers with tunable size, shape, and composition at high throughput (>100 mL h-1 per nozzle). The polymerization kinetics is quant. investigated and modeled as a function of the ink composition, the UV light intensity, and the velocity of the liquid jet, enabling engineering of complex micromaterials in jetting regimes. The size, morphol., and local chem. of micromaterials are independently controlled, as highlighted by producing micromaterials using 5 different photopolymers as well as multi-material composites. Simultaneous optimization of these control parameters yields rapid fabrication of stimuli-responsive Janus fibers that function as soft actuators. Finally, in-air photopolymerization enables control over the curvature of printed droplets, as highlighted by high-throughput printing of microlenses with tunable focal distance. The combination of rapid processing and tunability in composition and architecture opens a new route toward applications of tailored micromaterials in soft matter, medicine, pharmacy, and optics.

Advanced Materials (Weinheim, Germany) published new progress about Drugs. 7575-23-7 belongs to class alcohols-buliding-blocks, name is Pentaerythritol tetra(3-mercaptopropionate), and the molecular formula is C17H28O8S4, SDS of cas: 7575-23-7.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Cheng, Kezi published the artcilePhotoswitchable Covalent Adaptive Networks Based on Thiol-Ene Elastomers, Synthetic Route of 7575-23-7, the main research area is photoswitchable covalent adaptive network thiol ene elastomer; adhesives; click chemistry; covalent adaptive network; elastomer chemistry; photoresponsive materials; self-healing.

Covalent adaptive networks combine the advantages of cross-linked elastomers and dynamic bonding in a single system. In this work, we demonstrate a simple one-pot method to prepare thiol-ene elastomers that exhibit reversible photoinduced switching from an elastomeric gel to fluid state. This behavior can be generalized to thiol-ene cross-linked elastomers composed of different backbone chemistries (e.g., polydimethylsiloxane, polyethylene glycol, and polyurethane) and vinyl groups (e.g., allyl, vinyl ether, and acrylate). Photoswitching from the gel to fluid state occurs in seconds upon exposure to UV light and can be repeated over at least 180 cycles. These thiol-ene elastomers also exhibit the ability to heal, remold, and serve as reversible adhesives.

ACS Applied Materials & Interfaces published new progress about Creep. 7575-23-7 belongs to class alcohols-buliding-blocks, name is Pentaerythritol tetra(3-mercaptopropionate), and the molecular formula is C17H28O8S4, Synthetic Route of 7575-23-7.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Rod, Kenton A. published the artcilePolymer-cement composites with adhesion and re-adhesion (healing) to casing capability for geothermal wellbore applications, Recommanded Product: Pentaerythritol tetra(3-mercaptopropionate), the main research area is Polymer cement composite re adhesion casing density functional theory.

Deterioration of cement/casing adhesion in wellbore scenarios can result in unwanted and potentially harmful leakage with the potential of serious repair costs. In this work, the authors explore the use of self-healing polymers added to conventional wellbore cements as a way to bring about self-healing and readhering (to casing) properties to the composite. Self-healing capability was demonstrated by permeability anal. showing that polymer-cement composites reduce flow by 50-70% at cement bulk and at the cement/steel interface. Use of atomistic simulations imply that these polymers have good wetting properties on the steel surfaces. Interactions between steel/polymer and cement/polymer are complementary, resulting in a wider range of bonding patterns. Cracks seem to expose under-coordinated sites that result in more bonding interactions, which agrees well with the permeability measurements showing high degree of healed cracks and cement-steel interfacial gaps together with an overall increased in structural integrity of these advanced polymer-cement composite materials.

Cement & Concrete Composites published new progress about Cement. 7575-23-7 belongs to class alcohols-buliding-blocks, name is Pentaerythritol tetra(3-mercaptopropionate), and the molecular formula is C17H28O8S4, Recommanded Product: Pentaerythritol tetra(3-mercaptopropionate).

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Moradi, Sasan published the artcileRemarkable thermal conductivity of epoxy composites filled with boron nitride and cured under pressure, SDS of cas: 7575-23-7, the main research area is boron nitride epoxy resin composite curing thermal conductivity; boron nitride; density; differential scanning calorimetry (DSC); epoxy composites; pressure; thermal conductivity.

This work demonstrates that the application of even moderate pressures during cure can result in a remarkable enhancement of the thermal conductivity of composites of epoxy and boron nitride (BN). Two systems have been used: epoxy-thiol and epoxy-diamine composites, filled with BN particles of different sizes and types: 2, 30 and 180μm platelets and 120μm agglomerates. Using measurements of d. and thermal conductivity, samples cured under pressures of 175 kPa and 2 MPa are compared with the same compositions cured at ambient pressure. The thermal conductivity increases for all samples cured under pressure, but the mechanism responsible depends on the composite system: For epoxy-diamine composites, the increase results principally from a reduction in the void content; for the epoxy-thiol system with BN platelets, the increase results from an improved matrix-particle interface; for the epoxy-thiol system with BN agglomerates, which has a thermal conductivity greater than 10 W/mK at 44.7 volume% filler content, the agglomerates are deformed to give a significantly increased area of contact. These results indicate that curing under pressure is an effective means of achieving high conductivity in epoxy-BN composites.

Polymers (Basel, Switzerland) published new progress about Density. 7575-23-7 belongs to class alcohols-buliding-blocks, name is Pentaerythritol tetra(3-mercaptopropionate), and the molecular formula is C17H28O8S4, SDS of cas: 7575-23-7.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Zhang, Qian published the artcileSelf-healable and reprocessible liquid crystalline elastomer and its highly thermal conductive composites by incorporating graphene via in-situ polymerization, SDS of cas: 7575-23-7, the main research area is liquid crystalline elastomer thermally conductive composite thermomech property.

The booming of modern electronic devices featuring increasing power and multi-functionalization demands novel high thermal conductive materials with various functions, such as self-healing property and high deformability, while traditional polymer-based or metallic-based materials could hardly provide. Therefore, we report a high thermal conductive and disulfide-based self-healable and reprocessible liquid crystalline elastomer (SHLCE) composite by incorporating graphene nanoplates (GNPs) fillers. The obtained GNPs/SHLCE composites exhibited desired thermal conductivity (5.08 Wm-1 K-1) when the content of GNPs was 20 wt% to the composites. Moreover, the GNPs/SHLCE composites showed intriguing recycled performance (tensile strength after recycle could maintain over 93% compared with that of original composites). Furthermore, we concluded that the improved thermal conductivity of GNPs/SHLCE composites was beneficial to the thermal induced reprocessible and shelf-healable systems.

Journal of Applied Polymer Science published new progress about Fillers. 7575-23-7 belongs to class alcohols-buliding-blocks, name is Pentaerythritol tetra(3-mercaptopropionate), and the molecular formula is C17H28O8S4, SDS of cas: 7575-23-7.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Tian, Yazhou published the artcileFrom biomass resources to functional materials: A fluorescent thermosetting material based on resveratrol via thiol-ene click chemistry, HPLC of Formula: 7575-23-7, the main research area is resveratrol allyl ether preparation biomass thiolene click chem.

Exploring sustainable bio-based thiol-ene crosslinked networks with inherent fluorescence, high comprehensive properties as well as low-toxicity will significantly expand their applications in display, anti-counterfeiting, and biomedical materials, etc. Resveratrol allyl ether (RAE), a novel multifunctional allyl compound, was prepared from sustainable feedstocks, and a series of thermosetting materials were designed by tuning the functionality of thiol compounds (from two to four) via UV-light induced thiol-ene click reaction. The curing behavior, thermal and thermomech. performance, mech. properties, and biotoxicity of these thiol-ene crosslinked networks were studied, resp. RAE-4SH exhibited the highest Tg and mech. properties. Specifically, the Tg of RAE-4SH was up to 71.2°; meanwhile, the tensile strength and modulus were as high as 49.5 MPa and 1.2 GPa, resp. It also performed exceptional strong blue-fluorescence under the excitation of UV-light due to the inherent conjugated structure. Moreover, the MTT and cell experiment confirmed low-toxicity of RAE-4SH. Finally, several complex patterns including “”BUCT””, a flower, and a two-dimension code can be easily prepared with the help of the photo mask. To summarize, RAE provides a new strategy to explore the biomass resources to prepare high-performance functional materials, which may greatly enlarge its application in the future.

European Polymer Journal published new progress about Biomass. 7575-23-7 belongs to class alcohols-buliding-blocks, name is Pentaerythritol tetra(3-mercaptopropionate), and the molecular formula is C17H28O8S4, HPLC of Formula: 7575-23-7.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Cassidy, Kyle J. published the artcileComposite Particles From Pickering-Stabilized Radical Mediated Thiol-Ene Suspension Polymerizations, Name: Pentaerythritol tetra(3-mercaptopropionate), the main research area is polythioether silica composite particle radical thiol ene suspension polymerization; pickering stabilization morphol thermal property.

Pickering stabilization is a facile method to create composite colloidal particles. Inorganic colloidal SiO2 nanoparticles are often used as the stabilizer for particles instead of the more common amphiphilic surfactants. Here the use of this approach in radical-mediated thiol-ene suspension polymerizations using monomers 1,3,5-triallyl-1,3,5-triazine-2,4,6(1H,3H,5H)-trione (TTT) and pentaerythritol tetrakis (3-mercaptopropionate) (PETMP) is described. The resulting micron-sized crosslinked poly(thioether) colloidal particles are coated with 80 nm silica nanoparticles. The addition of a small amount of various costabilizers is examined (hexadecane, cetyl alc. and toluene), and while all yielded particles, cetyl alc. provide more consistent results. SEM and thermal anal. of the composite particles demonstrate morphologies that are consistent with a raspberry-like structure. No significant changes to the glass transition temperature are observed, which is consistent with the silica nanoparticles being located at the surface of the polymer particles.

Macromolecular Reaction Engineering published new progress about Colloids. 7575-23-7 belongs to class alcohols-buliding-blocks, name is Pentaerythritol tetra(3-mercaptopropionate), and the molecular formula is C17H28O8S4, Name: Pentaerythritol tetra(3-mercaptopropionate).

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Sefannaser, Mahmud published the artcileRadiative Relaxation in Luminescent Silicon Nanocrystal Thiol-Ene Composites, Formula: C17H28O8S4, the main research area is radiative relaxation luminescent silicon nanocrystal thiol ene composite.

Efficient photoluminescence (PL) from silicon nanocrystal (SiNC) composites has important implications for emerging solar-collection technologies, yet a detailed understanding of the landscape of PL relaxation in vitrified colloidal SiNCs is still materializing. Here, we explore details of PL relaxation in photo-polymerized off-stoichiometric polymer/nanocrystal hybrids. Specifically, thiol-ene polymer/nanocrystal composites were synthesized from a tetra-functional thiol, tri-functional allyl, and a family of dodecyl-passivated colloidal SiNCs with peak PL wavelength spanning 700-950 nm. We find time- and air-stable emission from dilute composites with up to 70% quantum yield, and we investigate PL relaxation in the parameter space of nanocrystal size and temperature, focusing on changes in the partitioning of multimodal decay upon going from the colloid to composite. In light of previous work, our results reveal similarities between the impacts of crosslinking and cooling to cryogenic temperatures, both of which are characterized by a relative reduction in the availability of phonons.

Journal of Physical Chemistry C published new progress about Colloids. 7575-23-7 belongs to class alcohols-buliding-blocks, name is Pentaerythritol tetra(3-mercaptopropionate), and the molecular formula is C17H28O8S4, Formula: C17H28O8S4.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts